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1. Shard Calculation

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Calculated Shard: 31 (from laksa074)

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curl -X POST \
  'http://laksa031.int.ahrefs:8124/' \
  -H 'Content-Type: text/plain' \
  -H 'X-ClickHouse-Database: crawler3' \
  -H 'Authorization: Basic YXBpOg==' \
  -d 'SELECT getAhrefsURLFromUnparsed(src_unparsed) AS found_url, ifNull(toUnixTimestamp(download_stamp), 0) AS crawl_time, ifNull(toUnixTimestamp(props_url_first_seen), 0) AS first_indexed_time, download_http_code AS http_code, src_unparsed AS src_unparsed, src_root_hash AS src_root_hash, history_drop_reason AS history_drop_reason, meta_title AS meta_title, meta_descriptions AS meta_descriptions, attrs_boilerpipe_text AS attrs_boilerpipe_text, attrs_markdown AS attrs_markdown, attrs_readable_markdown AS attrs_readable_markdown, meta_canonical AS meta_canonical FROM crawler3.page_info_local FINAL PREWHERE (src_root_hash, src_unparsed) IN ((getAhrefsRootHashFromUnparsed(getAhrefsUnparsedNoserviceFromURL(\'https://www.thespruceeats.com/best-countertop-water-filters-4178851\')), getAhrefsUnparsedNoserviceFromURL(\'https://www.thespruceeats.com/best-countertop-water-filters-4178851\'))) FORMAT JSONEachRow'

Response:

{"found_url":"https:\/\/www.thespruceeats.com\/best-countertop-water-filters-4178851","crawl_time":1776270503,"first_indexed_time":1551827667,"http_code":200,"src_unparsed":"com,thespruceeats!www,\/best-countertop-water-filters-4178851 s443","src_root_hash":"16553495538597850831","history_drop_reason":null,"meta_title":"The Best Countertop Water Filters of 2026, Tested & Reviewed","meta_descriptions":["Get fresher, filtered water at home without purchasing another single-use water bottle again. We tested the best countertop water filters for staying hydrated and saving money in the long run."],"attrs_boilerpipe_text":"What We Like\nCompact and sleek design\nEasy setup\nFast, clean-tasting results\nTank-free, direct faucet connection\nWhat We Don’t Like\nNot compatible with all faucets\nThe Brondell Countertop Water Filtration System is one of those rare finds that blends power with convenience. We found that this countertop water filter delivers crisp, odor-free water while taking up surprisingly little space on the counter. The Brondell Cypress has been independently tested and certified by the\nWater Quality Association (WQA)\nto meet NSF\/ANSI standards 42, 53, and 372, and it uses a patented three-stage Nanotrap filtration system with carbon block technology to capture a wide range of impurities, including bacteria, viruses,\nVOCs\n, and other harmful chemicals.\nDuring testing, we were impressed by how easy it is to set up. For most standard faucets, installation only required attaching the provided adaptor and tightening it into place, which took around 10 minutes. For those with nonstandard faucets, there’s an optional under-counter connection available for purchase. When we tried that method, it took closer to 30 minutes to hook up to the main cold water line and install the T-valve. Once connected, the system dispensed fresh, clean water instantly with no waiting required. One thing to note: The Brondell Cypress may not be compatible with pull-down or pull-out faucets, so check your fixture style before purchasing.\nThe filter trio includes a composite plus filter, a Nanotrap filter, and a carbon block filter. The first and third stages need to be replaced every six months, while the Nanotrap filter lasts about a year. Even with this multi-layer system, the Brondell takes up minimal counter space at just 3.75 x 10.5 x 13.5 inches. Between its sleek design and standout performance, it’s a reliable pick for anyone who wants cleaner, better-tasting water without the installation headaches of a built-in system.\nFiltration Type:\n3-stage carbon and Nanotrap filtration |\nContaminants Filtered:\nChlorine, heavy metals, lead, PFOA, PFOS, VOCs, and other impurities |\nRetains Minerals:\nYes |\nCertified By:\nWQA Gold Seal to NSF\/ANSI 42, 53, 401, and 372 |\nDimensions:\n10.5 x 13.5 x 3.75 inches\nCredit: The Spruce Eats\nCredit: The Spruce Eats\nCredit: The Spruce Eats\nWhat We Like\nRemoves fluoride and other common contaminants\nSmooth, refreshing water\nReverse osmosis system\nWhat We Don’t Like\nLarger countertop footprint\nFilters water slowly\nFor those focused on fluoride removal, the AlcaPure Countertop Reverse Osmosis Filter proved to be one of the strongest performers we tested. With growing concern that excessive fluoride may cause issues such as tooth discoloration and bone weakness, this model is designed to help address that by removing up to 95 percent of fluoride and as much as 99 percent of other contaminants.\n1\n2\nSetup is simple since it’s a countertop model that doesn’t need plumbing: Just plug it in and pour water into the front drawer. During testing, we found it removed all traces of any chlorine odor as well as the faint metallic taste from our city tap water. The resulting water tasted light, crisp, and noticeably cleaner. We did notice that the water filtering process does take some patience. It takes roughly 15 minutes to produce a half-gallon of clean water, so you’ll likely find yourself refilling the unfiltered water drawer throughout the day. \nThe device’s reverse osmosis membrane and filters have been certified by the\nInternational Association of Plumbing & Mechanical Officials\n(IAPMO) to NSF standards 42 and 58, but the unit itself is not fully NSF-certified according to the NSF database. The membrane should be replaced every two years, while the other three filters last about a year.\n3\nA built-in LED display conveniently signals when it’s time for replacements, taking the guesswork out of maintenance. \nWhile the AlcaPure sits on the higher end of the price range and is a bit larger than some of the competition (9.5 x 14.5 x 16.25 inches), its impressive performance, polished design, and highly effective fluoride reduction make it well worth the investment.\nFiltration Type:\nReverse osmosis |\nContaminants Filtered:\nChlorine, industrial chemicals, pesticides, herbicides, turbidity, VOCs, microorganisms |\nRetains Minerals:\nNo |\nCertified By:\nIAPMO |\nDimensions:\n9.5 x 14.5 x 16.25 inches\nCredit: The Spruce Eats\nCredit: The Spruce Eats\nCredit: The Spruce Eats\nWhat We Like\nFast filtration time\nQuiet-powered filtration\nKeeps essential minerals\nWhat We Don’t Like\nNeeds an outlet nearby\nIf you’re looking for a fast, compact, and reliable countertop filter, the Aquasana Clean Water Machine hits all the right notes. This countertop water filter measures on the smaller side at just 9.7 x 8 x 11.6 inches, making it easy to find a countertop spot for it under a cabinet. You’ll also need to place it near an outlet since that’s part of the magic. This filter uses powered filtration rather than gravity. That design allows you to access filtered water much faster than with most systems. In testing, we found that it only took 15 seconds to filter 16 ounces of water. We did notice a small issue when filling a gallon container, as the dispenser sits only a few inches from the filter housing, leaving limited clearance and some minor splashing.\nThe filter is easy to operate by simply pressing the rapid-release button to start and tapping it again to stop. We were impressed that this single activated carbon filter cleared up the cloudy appearance of our tap water and removed both metallic and chlorine odors and aftertaste. To boot, this model doesn’t remove beneficial minerals such as calcium, magnesium, and potassium. Tested and certified by the WQA, this filter meets NSF standards 42, 53, and 401.\nSetup took us about 10 minutes, including flushing the system as the company recommends when replacing the filter. Each filter lasts around six months, and a built-in indicator light lets you know when it’s time for a replacement. The filters are conveniently sold in two-packs for a full year of clean water.\nFiltration Type:\nCarbon filtration, ion exchange, and sub-micron mechanical filtration |\nContaminants Filtered:\nRemoves 78 contaminants, including chlorine, chloramine, lead, VOCs, asbestos, turbidity, mercury, cysts, PFOA\/PFOS, herbicides, pesticides, pharmaceuticals, and microplastics |\nRetains Minerals:\nYes |\nCertified By:\nWQA |\nDimensions:\n9.7 x 8 x 11.6 inches\nCredit: The Spruce Eats\nCredit: The Spruce Eats\nCredit: The Spruce Eats\nWhat We Like\nTwo-gallon capacity\nLong-lasting filters\nSleek, durable stainless steel design\nNo power or plumbing required\nWhat We Don’t Like\nLarge size needs dedicated counter space\nThe Big Berkey Water Filter offers a high-capacity system that holds more than two gallons of water, making it ideal for households of two to four. While it does take up a fair amount of vertical height (21 inches high), the trade-off is fewer refills and consistently great-tasting water.\nThis model uses a pair of Black Berkey filter elements, each rated to purify up to 6,000 gallons of water. How long that lasts depends on daily use. A family filtering about two gallons per day could see the filters last as long as eight years, though heavier use will shorten their lifespan. When the flow rate slows or you hit capacity, the filters can be cleaned or replaced. You can also install additional filters to increase the flow rate or double the filtration capacity. For those who need added purification, a separate pair of fluoride and arsenic filters is available. The system doesn’t require electricity or a faucet connection, though it does benefit from regular monitoring for best performance. The filters were tested and certified by Los Angeles County and independent labs to NSF standards 53 and 42.\nIn testing, we found that the Big Berkey removed the metallic smell and taste from our tap water, replacing it with a clean, mineral-like finish that felt smooth and refreshing. The stainless steel build gives it a polished, modern look that feels like a more elevated version of a standard water cooler. Because it’s gravity-fed, filtration takes about one hour per gallon. Water is dispensed by pressing the lever at the base, which releases a steady stream from the spigot. We found it most convenient to keep the system near the sink for easy refills.\nPlease note that Big Berkey does not warranty products purchased through Amazon. The\ncompany states\n: “We routinely receive requests for assistance\/support from Amazon purchases, and most times are unfortunately unable to provide service support. As a result, and due to the inability of Amazon to assist in policing and removing fraudulent\/imitation Berkey products, we do not recommend purchasing through Amazon.”\nFiltration Type:\nCarbon filtration and ion exchange with optional post-filtration fluoride filters |\nContaminants Filtered:\nHeavy metals, VOCs, nitrates, radon 222, trihalomethanes, chromium, herbicides, pesticides, organic solvents, others |\nRetains Minerals:\nYes |\nCertified By:\nLos Angeles County and independent labs |\nDimensions:\n21 x 8.5 x 8.5 inches\nCredit: The Spruce Eats\nCredit: The Spruce Eats\nCredit: The Spruce Eats\nWhat We Like\nRemoves over 80 contaminants\nProduces exceptionally pure water\nEasy-to-read digital display\nWhat We Don’t Like\nMust hold button to pour\nReverse osmosis works by pushing water through a semipermeable membrane that captures some of the smallest contaminants, even those on a molecular level. This process removes substances like salt, dirt, and other particulates that most standard filters cannot touch, producing an exceptionally pure taste and clear water. The AquaTru Countertop Reverse Osmosis Filter uses a four-stage filtration system, including a reverse osmosis membrane, to transform tap water into clean, great-tasting drinking water. To use, simply fill the one-gallon tank, and the system converts it into about three quarts of filtered water.\nDuring testing, we found that it completely transformed our cloudy, funky-tasting tap water into crystal-clear, odor-free water with no perceptible aftertaste. Setup required a few components, but the helpful instructional videos made the process easy to follow. To dispense water, press and hold the button, then release when your glass is full. We did notice slight dripping after releasing the button and found it mildly inconvenient to have to hold it down, but its sleek, modern design more than made up for that small drawback. It is also reasonably compact but does require an outlet for operation.\nThe AquaTru includes a digital display that shows when it is time to replace the filters. The reverse osmosis filter lasts around two years, while the pre\/carbon filter lasts six months and the carbon VOC filter lasts up to one year. Replacements are sold as a three-piece set. This system has been tested and certified by the IAPMO to meet NSF standards 42, 53, 58, 401, and P473, and the filters remove 83 contaminants, including lead, arsenic, fluoride, chlorine, and nitrates.\nFiltration Type:\n4-stage reverse osmosis |\nContaminants Filtered:\nRemoves 83 contaminants, including lead, arsenic, PFAs, fluoride, chlorine, and nitrates |\nRetains Minerals:\nNo |\nCertified By:\nTested and certified by IAPMO to meet NSF\/ANSI standards 41, 53, 58, 401 |\nDimensions:\n14 x 14 x 12 inches\nCredit: The Spruce Eats\nCredit: The Spruce Eats\nCredit: The Spruce Eats\nCredit: The Spruce Eats\nContinue to 5 of 9 below.\nWhat We Like\nElegant glass carafe design\nFast filtration time\nAdds back essential minerals\nWhat We Don’t Like\nNot fully NSF-certified\nThe Bluevua Reverse Osmosis Countertop Water Filter combines the simplicity of a water filter pitcher with the power of a multi-stage filtration system. Designed much like a drip coffee maker, it automatically fills its glass carafe with purified water once the filtration process finishes. The carafe is made of durable borosilicate glass, holds up to seven cups, and features easy-to-read measurement markings.\nThe setup for this water filter is simpler than most. Just plug it in, flush the system a few times before first use as the manufacturer recommends, and press the button to start filtering. In testing, we found that it was impressively fast, producing a full pitcher of clean water in less than five minutes. This system uses a four-stage filtration process that includes a reverse osmosis membrane.\nWe found that it produced clean, crisp-tasting water compared to the cloudy tap water poured into the unfiltered side. We also appreciated the optional mineral insert, which restores essential minerals and gives the water a refreshing mineral-water flavor.\nThe stage one, two, and four filters need replacing about once a year, while the stage three filter lasts up to two years. A digital display shows the water quality, pitcher level, and filter life, conveniently alerting you when it’s time to replace each one. SGS has certified these filters to NSF standards 42, 53, and 401, though the system itself is not fully NSF-certified according to the NSF database.\nFiltration Type:\n4-stage reverse osmosis |\nContaminants Filtered:\nChlorides, lead, chlorine, fluoride, heavy metals, mercury, radium, chromium, arsenic, chloramine |\nRetains Minerals:\nNo |\nCertified By:\nSGS |\nDimensions:\n15 x 10.9 x 14.3 inches\nCredit: The Spruce Eats\nCredit: The Spruce Eats\nCredit: The Spruce Eats\nWhat We Like\nFast filtration time\nCompact and modern aesthetic\nEasy to use\nWhat We Don’t Like\nLoud while running\nBest known for its classic water filter pitchers, Brita brings the same trusted simplicity to its countertop model. We found that setup was just as easy as it is with its pitchers, with clear instructions right on the machine itself. Simply plug it in, run a few water cycles, and it’s ready to go. In testing, we found that it produced clean, smooth, and refreshing water that tasted noticeably fresher than our tap water.\nOne standout feature of this model is its speed. It filtered water within seconds, going from the unfiltered tank to our glass almost instantly once we pressed the button. Because the stream dispenses quickly, we recommend using a taller glass to avoid splashing.\nWe also liked the sleek, space-saving design, which fits comfortably in smaller kitchens. The filter operates on the louder side while running, but it’s quiet when idle. It only filters room-temperature water, though we found that refrigerating the unfiltered tank before use provides a simple workaround as long as you remember to secure the opening at the bottom first.\nThe Brita Hub includes a digital display that lights up when it’s time to replace the filter, which typically lasts around six months. The system is tested and certified by the WQA to NSF standards 42 and 401 and by the IAPMO to NSF standard 53.\nFiltration Type:\nPressurized carbon block filtration |\nContaminants Filtered:\n70+ contaminants, including chlorine, chloramine, lead, mercury, PFOA\/PFOS, and microplastics |\nRetains Minerals:\nYes |\nCertified By:\nWQA to NSF\/ANSI 42 and 401; IAPMO to NSF\/ANSI 53 |\nDimensions:\n14.4 x 7.5 x 11.4 inches\nCredit: The Spruce Eats\nCredit: The Spruce Eats\nCredit: The Spruce Eats\nWhat We Like\nSleek stainless steel design\nNoticeably light and clean-tasting water\nMultiple matte color options\nWhat We Don’t Like\nComplex setup and priming\nThe Boroux Legacy Compact Water Filter System blends timeless style with powerful gravity-fed filtration. Similar in concept to the Big Berkey, this system features upper and lower stainless steel chambers and comes in classic silver, matte black, or matte white finishes. During testing, we found the matte stainless look exceptionally sleek, as it fit seamlessly into our kitchen and looked more like decor than a countertop appliance.\nThe system operates with two Foundation filters, with the option to add fluoride filters for extra purification. Simply pour water into the upper chamber and let gravity do the work, slowly filtering it into the lower reservoir, which dispenses through a stainless steel spigot. We appreciated the water-level spigot, which made it easy to tell when to refill.\nOne downside we encountered with this system was the setup. Between reading instructions, watching online tutorials, and priming the filters, it took us nearly two hours to get it up and running. But in the end, we found that the results were worth it. The water tasted smooth and light, with a clean, refreshing finish. The system holds 1.8 gallons and performs best when kept near the sink for easy refills.\nFilters should be replaced about every 12 months, depending on usage. The Boroux Legacy Compact is WQA-certified to NSF\/ANSI\/CAN 372 for lead-free compliance and has been independently tested by third-party labs for additional performance claims.\nFiltration Type:\nGravity-fed dual Foundation filters (optional fluoride add-ons) |\nContaminants Filtered:\nThird-party tested for 70+ contaminants, including chlorine, chloramine, lead, mercury, and PFAS (PFOA\/PFOS) |\nRetains Minerals:\nYes |\nCertified By:\nWQA to NSF\/ANSI\/CAN 372 (lead-free); additional performance independently tested |\nDimensions:\n17.5 x 8 x 8 inches\nWhat We Like\nFits easily on small countertops\nStylish color options\nRefreshing, clean taste\nWhat We Don’t Like\nSpigot placement limits positioning\nThe LifeStraw Home Studio Water Filter Dispenser proves that small can still be mighty. Compact enough for most countertops, this model offers clean, great-tasting water in a sleek, modern design available in colors like orchid pink, jade green, and soft neutrals too.\nSetup is refreshingly simple: rinse the carbon filter, twist it into place, and run a few rinse cycles. The 10-cup dispenser filters a full batch of water in about 10 to 15 minutes, combining a membrane microfilter that lasts roughly one year (264 gallons) with an activated carbon and ion exchange filter that should be replaced every two months (40 gallons). Both filter types are sold separately and install easily with a twist. Overall, we were highly impressed by the fresh, crisp taste of the filtered water, especially given the unit’s minimalist design and easy setup.\nIn testing, we found that the spigot placement at the base made positioning a little tricky. It needs to hang slightly off the edge of the counter or sink to dispense water. However, at just over 10 inches tall and 6.7 inches wide, it can also fit inside a refrigerator if you prefer chilled, filtered water. We also found that filling the upper reservoir about three-quarters full, or roughly seven to eight cups, allowed for the smoothest flow and prevented water from lingering in the top chamber. \nThis dispenser is independently tested to meet NSF\/ANSI standards 42 and 53 and is proven to remove bacteria, parasites, microplastics, chlorine, organic chemical matter, and heavy metals like lead, all while retaining healthy minerals.\nFiltration Type:\nMembrane microfilter + activated carbon + ion exchange|\nContaminants Filtered:\nBacteria, parasites, microplastics, chlorine, organic chemical matter, and heavy metals including lead |\nRetains Minerals:\nYes |\nCertified By:\nIndependently tested to meet NSF\/ANSI 42, 53, 401, P473 (PFAS) |\nDimensions:\n10.4 x 6.7 x 8.5 inches\nFinal Verdict\nOverall, we were most impressed by the\nBrondell Cypress Three-Stage Countertop Water Filtration System\nfor its quick setup and clean, odor-free taste. For fluoride removal, the\nAlcaPure Countertop Reverse Osmosis Filter\nis our top choice for its powerful and efficient filtration system.\nHow We Tested Countertop Water Filters\nWe spent more than 1,395 hours testing 11 of the most popular countertop water filters using tap water from New York, San Francisco, Seattle, and several cities in the Midwest and South. Each model was rated on taste, filtration speed, ease of use, design, and overall value to see how it performed in everyday use.\nPlease note that this test focused on aesthetic performance, including taste, smell, and usability, and did not evaluate contaminant removal such as lead, pharmaceuticals, or pesticides. All products included on this list are NSF-certified or certified by a third party to NSF standards. For details, see individual product certifications or verify listings directly with NSF.\nTaste and Smell:\nTo start, we sampled unfiltered tap water and compared it to the filtered version from each unit. Our testers noted how effectively the systems removed metallic, sulfur, and chlorine flavors and whether the final result tasted clean, light, and refreshing enough to drink all day.\nEase of Use:\nWe tracked how long it took each filter to process a full batch, how often refills were needed, and how intuitive the installation and operation felt. Filters that were quick to set up, simple to refill, and easy to maintain scored highest for daily convenience.\nDesign & Value:\nOur testers assessed each filter’s footprint, build quality, and refill experience, along with how well it fit under a faucet or on a countertop. They also compared overall performance and long-term filter costs to determine which models offered the best balance of design, function, and value.\nWhat to Look for in a Countertop Water Filter System\nStyle\nCountertop water filters generally come in two styles: faucet diverters and freestanding units.\nFaucet diverters attach directly to your kitchen faucet using a small connector or hose. Once installed, you can easily switch between unfiltered and filtered water. Setup is usually simple and doesn’t require tools.\nFreestanding filters, on the other hand, don’t need a faucet connection. You just fill the top reservoir with tap water and let gravity—or in some cases, an electric pump—do the rest. The filtered water collects in a lower chamber or carafe, ready to pour. These tend to take up more counter space, but they’re perfect for renters or anyone who prefers a setup that doesn’t rely on plumbing.\nIf you drink a lot of water or live in a larger household, consider choosing a higher-capacity filter so you’re not constantly refilling throughout the day.\nPurpose\nBefore you buy, think about what you want your water filter to accomplish. If you’re mainly after better-tasting water, a simple single-stage carbon filter will likely do the job by removing chlorine and unpleasant odors.\nIf your area has more serious water quality issues, or you just want the highest level of purification, a system with multiple filtration stages is a better choice. Check your city’s annual water quality report to see what’s in your tap water.\n⁶\nIf you’re on well water, you can order a private test through a state-certified lab to identify potential contaminants.\nMore advanced countertop systems often use a combination of carbon absorption, ion exchange, and reverse osmosis. Together, these target everything from larger sediment particles to microscopic contaminants, giving you the cleanest water possible.\nFilter Life\nEvery countertop water filter needs its filters replaced regularly to maintain performance. The lifespan depends on both the model and how much water you use, but most need replacement roughly every six months.\nSome filters last longer, (especially reverse osmosis membranes) while others may need changing sooner if your water has more sediment or minerals. Replacement costs also vary, so it’s a good idea to check pricing before committing to a system. Staying consistent with filter changes keeps your water tasting fresh and helps your filter last longer overall.\nCertification\nThird-party certification is one of the best ways to know that a countertop water filter actually does what it claims. Look for official marks from NSF, ANSI, or the Water Quality Association (WQA). These organizations independently test filters to confirm that they meet safety and performance standards.\nBe cautious of vague wording. A filter that says it’s “tested to” or “meets” NSF\/ANSI standards isn’t necessarily certified. Only filters that have undergone full verification can display the NSF seal.\n⁷\nDouble-checking this detail before buying ensures you’re getting a filter that’s been properly evaluated and not just advertised as one.\nFAQs\nWhat is the best way to filter tap water?\nThe right filtration system depends on your home setup, water usage, and what you’re trying to remove.\nA countertop water filter is a great middle ground as it filters enough water for daily drinking and cooking without requiring plumbing. If you have the counter space, a faucet diverter system offers extra convenience since it connects directly to your sink, saving you from constant refills. If you prefer flexibility, freestanding filters are easy to move around and don’t need to attach to a faucet. Some even fit inside the fridge if you like your water chilled.\nBefore deciding, it’s ideal to look up your local water quality report (available through your city or county’s utility department) or order a private test. Knowing what’s in your tap water helps you choose a filter that tackles the right contaminants.\nIf a countertop option doesn’t fit your space or routine, consider an under-sink system, pitcher filter, or even a whole-house filter for broader coverage.\nDo countertop water filters remove fluoride?\nSome countertop filters remove fluoride, but not all of them do. Fluoride reduction typically requires an extra filtration step, usually through a reverse osmosis membrane or activated alumina filter.\nAlways check product specs before buying, since fluoride removal isn’t standard in most carbon-based systems. If reducing fluoride is your priority, reverse osmosis filters remain the most effective choice, though even these can’t eliminate every trace.\nAre there any water filters that can remove all contaminants?\n“Not all filters remove all contaminants,” says\nRick Andrew\n, formerly of NSF International’s Global Water Program. In other words, every filter works a little differently, so it’s important to first understand what’s actually in your water before deciding on a system. You can find this information in your local utility’s annual water quality report, which is available to all residents. If you have well water or think your plumbing could be contributing to contamination, a private lab can test your water in more detail.\n4\nWhile no home filter removes every possible contaminant, different types are made to tackle specific ones. Activated carbon filters are best for improving taste and reducing chlorine. Ion exchange filters target heavy metals like lead. Reverse osmosis systems remove a wide range of dissolved solids and chemicals, and UV filters are designed to neutralize bacteria and viruses.\nThe key is to choose a filter that addresses your specific water concerns and confirm it’s NSF-certified, which ensures that the performance claims have been independently verified. You can view\nNSF's online listings here\nto see if a specific product is certified.\nHow often do you need to change countertop water filters?\nMost countertop filters last around six months, but that can vary depending on the brand, system type, and how much water you use. Some filters need replacing every few months, while others, especially those with multi-stage or reverse osmosis systems, can last up to a year or even longer.\nFor the best results, follow the manufacturer’s replacement schedule and pay attention to built-in indicators if your system has them. Changing filters on time keeps your water tasting fresh and prevents buildup that could affect performance.\nDo water filters work for well water?\nYes, many countertop water filters work just as well with well water as they do with city water. The key is to choose one designed for your specific water quality.\nPrivate wells draw water directly from the ground and aren’t federally regulated like municipal systems. This means homeowners are responsible for regular testing and maintenance. For guidance, you can reach out to your state’s Department of Natural Resources or local health department.\nWell water quality can be affected by natural conditions (like soil composition) or nearby human activity such as farming or construction.\n5\nTo stay safe, have your well tested by a\nstate-certified lab\neach year for common contaminants like bacteria, nitrates, pesticides, volatile organic compounds (VOCs), and dissolved solids.\n6\n7\nFilters that use UV light, sediment filtration, or reverse osmosis can all help improve well water safety. Watch for changes in taste, odor, or color as these can be early signs that it’s time to retest or replace your filter.\nHow do you know if a water filter is counterfeit?\nUnfortunately, counterfeit filters are fairly common, especially online. According to Rick Andrew of NSF International, price is often the biggest red flag. If the cost seems too good to be true, it probably is. Other signs include packaging that looks overly glossy or cheaply made, certification marks that are tiny or hard to read, and filters that feel unusually light, which can mean they lack the proper filtration materials. When in doubt, buy replacements directly from the manufacturer or an authorized retailer to ensure you’re getting a genuine product.\nWhat do you need to know about reverse osmosis filters?\n“Reverse osmosis filters remove a large number of contaminants but are generally more expensive,” explains\nSydney Evans\n, Science Analyst at the Environmental Working Group.\nMost reverse osmosis (RO) systems use a semi-permeable membrane combined with an activated carbon filter, which helps catch extra impurities and protect the delicate RO membrane. While this process produces exceptionally clean water, Evans says that these systems also tend to waste three to five times more water than they filter.\nEven so, reverse osmosis filters remain one of the best options for anyone wanting maximum purification, especially for reducing heavy metals, dissolved solids, and chemical pollutants.\nWhy Trust the Spruce Eats\nAs someone who has always been particular about the taste of her water,\nCheyenne Elwell\n, product tester and writer for The Spruce Eats, understands the importance of reliable filtration. After years of preferring bottled spring water, she began using a fridge filter to cut down on plastic waste but has since fallen in love with the pure taste of the Boroux. Cheyenne has personally tested several of the countertop water filters on this list (and some that didn’t make the cut), along with a variety of kitchen and coffee products. She also writes for Business Insider and runs Baked Brewed Beautiful, a site dedicated to coffee, brewing, and sustainable living.\nSources\nRick Andrew\nwas the Director of Global Business Development of Water Systems at the\nNational Science Foundation\n. He retired in 2023 after 30 years of experience in preserving and maintaining clean drinking water and is responsible for NSF’s global sales and structuring of water-related programs.\nSydney Evans\nis a Senior Science Analyst for the Environmental Working Group.","attrs_markdown":"[Skip to Content](https:\/\/www.thespruceeats.com\/best-countertop-water-filters-4178851#skip-to-content)\n\nbutton\n\nbutton\n\n[My Saves](https:\/\/www.myrecipes.com\/)\n\n- [Recipes](https:\/\/www.thespruceeats.com\/by-course-4162151)\n  - [Breakfast & Brunch](https:\/\/www.thespruceeats.com\/breakfast-brunch-4162826)\n  - [Lunch](https:\/\/www.thespruceeats.com\/lunch-4162818)\n  - [Appetizers & Snacks](https:\/\/www.thespruceeats.com\/appetizers-snacks-4162810)\n  - [Dinner](https:\/\/www.thespruceeats.com\/dinner-4162806)\n  - [Desserts](https:\/\/www.thespruceeats.com\/dessert-4162795)\n  - [Side Dishes](https:\/\/www.thespruceeats.com\/side-dishes-4162722)\n  - [Breads](https:\/\/www.thespruceeats.com\/breads-4162750)\n  - 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If you click on links we provide, we may receive compensation.\n\n# We Tested the Best Countertop Water Filters for Delicious Water on Demand\nCleaner, better-tasting water at home\n\nBy\n\n[Cheyenne Elwell](https:\/\/www.thespruceeats.com\/cheyenne-elwell-4685328)\n\n![Cheyenne Elwell]()\n\n![Cheyenne Elwell](https:\/\/www.thespruceeats.com\/thmb\/nyCI3lRWJwKxXYg1AzzrBjYuz4s=\/200x200\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/cheyenne-elwell1-f186094baa334ba484bfd802ae0c5f6a.jpg)\n\n[Cheyenne Elwell](https:\/\/www.thespruceeats.com\/cheyenne-elwell-4685328)\n\nCheyenne Elwell is a writer for The Spruce Eats specializing in food and coffee. She has written for Business Insider, MSN, and her own coffee blog.\n\nLearn about The Spruce Eats' [Editorial Process](https:\/\/www.thespruceeats.com\/about-us-4776236#toc-editorial-guidelines)\n\nUpdated on 10\/17\/25\n\n## In This Article\nView All\n\nIn This Article\n\n- [Top Picks](https:\/\/www.thespruceeats.com\/best-countertop-water-filters-4178851#toc-top-picks)\n- [Reviews](https:\/\/www.thespruceeats.com\/best-countertop-water-filters-4178851#toc-reviews)\n- [Final Verdict](https:\/\/www.thespruceeats.com\/best-countertop-water-filters-4178851#toc-final-verdict)\n- [How We Tested Countertop Water Filters](https:\/\/www.thespruceeats.com\/best-countertop-water-filters-4178851#toc-how-we-tested-countertop-water-filters)\n- [What to Look for in a Countertop Water Filter System](https:\/\/www.thespruceeats.com\/best-countertop-water-filters-4178851#toc-what-to-look-for-in-a-countertop-water-filter-system)\n- [FAQs](https:\/\/www.thespruceeats.com\/best-countertop-water-filters-4178851#toc-faqs)\n- [Why Trust the Spruce Eats](https:\/\/www.thespruceeats.com\/best-countertop-water-filters-4178851#toc-why-trust-the-spruce-eats)\n- [Sources](https:\/\/www.thespruceeats.com\/best-countertop-water-filters-4178851#toc-sources)\n\n![pressing button to dispense water on brita filter](https:\/\/www.thespruceeats.com\/thmb\/XzUt4Jh6zKe8WrBvwmwo7jFdwQM=\/1500x0\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-brita-hub-instant-powerful-countertop-filtration-elena-garcia-10-f1e928ce618a439586a2135ab1fbfbde.jpeg)\n\n![pressing button to dispense water on brita filter](https:\/\/www.thespruceeats.com\/thmb\/XzUt4Jh6zKe8WrBvwmwo7jFdwQM=\/1500x0\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-brita-hub-instant-powerful-countertop-filtration-elena-garcia-10-f1e928ce618a439586a2135ab1fbfbde.jpeg)\n\nThe Spruce Eats\n\nIf tap water isn’t cutting it, there are far better options than stocking up on bottled water. Countertop water filtration systems are a convenient way to get clean, fresh, and great-tasting water right at home while helping you to cut down on plastic waste. These units either connect directly to your faucet or can be filled manually, reducing the presence of chlorine, heavy metals, and particulates in tap water.\n\nWe spent nearly 1,400 hours testing popular countertop water filters to find the ones that truly deliver. Many of the models on our list are certified to reduce contaminants and all of them meet NSF standards, ensuring that each filter performs exactly as advertised.\n\n## Top Picks\nBest Overall:\n\n[Brondell Countertop Water Filtration System at Amazon \\$180](https:\/\/www.amazon.com\/Brondell-Cypress-Countertop-Filter-Certified\/dp\/B00EEDJSES?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851)\n\n[Jump to Review](https:\/\/www.thespruceeats.com\/best-countertop-water-filters-4178851#toc-best-overall-brondell-cypress-three-stage-countertop-water-filtration-system)\n\nBest for Fluoride Removal:\n\nSALE\n\n[AlcaPure Countertop Reverse Osmosis Filter at Amazon ~~\\$370~~ \\$299](https:\/\/www.amazon.com\/dp\/B0076CQXAQ?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851)\n\n[Jump to Review](https:\/\/www.thespruceeats.com\/best-countertop-water-filters-4178851#toc-best-for-fluoride-removal-alcapure-countertop-reverse-osmosis-filter)\n\nBest Compact:\n\n[Aquasana Clean Water Machine at Amazon \\$200](https:\/\/www.amazon.com\/Aquasana-OptimH2O-Whole-Filtration-System\/dp\/B07MG7S77N\/?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851)\n\n[Jump to Review](https:\/\/www.thespruceeats.com\/best-countertop-water-filters-4178851#toc-best-compact-aquasana-clean-water-machine)\n\nBest Large:\n\n[Big Berkey Water Filter at Amazon \\$367](https:\/\/www.amazon.com\/Berkey-Gravity-Fed-Filter-Purification-Elements\/dp\/B00CYW3EVO?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851)\n\n[Jump to Review](https:\/\/www.thespruceeats.com\/best-countertop-water-filters-4178851#toc-best-large-big-berkey-water-filter)\n\nBest Reverse Osmosis:\n\n[AquaTru Countertop Water Filtration System at Amazon \\$465](https:\/\/www.amazon.com\/Countertop-Filtration-Purification-System-Exclusive\/dp\/B01MDLMBKC\/?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851)\n\n[Jump to Review](https:\/\/www.thespruceeats.com\/best-countertop-water-filters-4178851#toc-best-reverse-osmosis-aquatru-countertop-water-filtration-purification-system)\n\nBest With a Removable Pitcher:\n\nSALE\n\n[Bluevua Reverse Osmosis Countertop Water Filter at Amazon ~~\\$434~~ \\$299](https:\/\/www.amazon.com\/Bluevua-RO100ROPOT-Countertop-Purification-Filtration\/dp\/B09KRDK677?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851)\n\n[Jump to Review](https:\/\/www.thespruceeats.com\/best-countertop-water-filters-4178851#toc-best-with-a-removable-pitcher-bluevua-ro100ropot-reverse-osmosis-system-countertop-water-filter)\n\nBest with Presets:\n\n[Brita Hub Countertop Water Filter at Amazon \\$195](https:\/\/www.amazon.com\/dp\/B0BLHX4JN1?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851)\n\n[Jump to Review](https:\/\/www.thespruceeats.com\/best-countertop-water-filters-4178851#toc-best-with-presets-brita-hub-instant-powerful-countertop-water-filtration-system)\n\nBest Design:\n\n[Boroux Legacy Gravity-Fed Countertop Stainless Steel Water Filter System at Amazon \\$375](https:\/\/www.amazon.com\/dp\/B0DB68DD6Q?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851)\n\n[Jump to Review](https:\/\/www.thespruceeats.com\/best-countertop-water-filters-4178851#toc-best-design-boroux-legacy-gravity-fed-countertop-stainless-steel-water-filter-system)\n\nBest Budget:\n\n[LifeStraw Water Filter Dispenser at Amazon \\$55](https:\/\/www.amazon.com\/LifeStraw-Dispenser-BPA-Free-parasites-microplastics\/dp\/B0DGH2GRXX?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851)\n\n[Jump to Review](https:\/\/www.thespruceeats.com\/best-countertop-water-filters-4178851#toc-best-budget-lifestraw-home-studio-water-filter-dispenser)\n\n## Best Overall\n[Brondell Countertop Water Filtration System](https:\/\/www.amazon.com\/Brondell-Cypress-Countertop-Filter-Certified\/dp\/B00EEDJSES?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851)\n\n[![Amazon Brondell Cypress Three-Stage Countertop Water Filtration System](https:\/\/www.thespruceeats.com\/thmb\/RQBBVMPfZgfvDeIgurjEroYRglc=\/fit-in\/1500x1000\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/Brondell-Cypress-Three-Stage-Countertop-Water-Filtration-System-72bc539a10484511be00795f95c22ca2.jpg) ![Amazon Brondell Cypress Three-Stage Countertop Water Filtration System](https:\/\/www.thespruceeats.com\/thmb\/RQBBVMPfZgfvDeIgurjEroYRglc=\/fit-in\/1500x1000\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/Brondell-Cypress-Three-Stage-Countertop-Water-Filtration-System-72bc539a10484511be00795f95c22ca2.jpg)](https:\/\/www.amazon.com\/Brondell-Cypress-Countertop-Filter-Certified\/dp\/B00EEDJSES?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851)\n\nCredit: Amazon\n\n[\\$180 \\$155 at Amazon](https:\/\/www.amazon.com\/Brondell-Cypress-Countertop-Filter-Certified\/dp\/B00EEDJSES?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851)\n\n[View on Staples](https:\/\/www.staples.com\/Brondell-H2O-Cypress-Countertop-Water-Filtration-System\/product_1904076?cid=AFF:1904076&slfpid=3)   [View on Build.com](https:\/\/www.build.com\/product\/summary\/883137?slfpid=3&source=shz_2244272&uid=2244272)\n\nWhat We Like\n\n- Compact and sleek design\n- Easy setup\n- Fast, clean-tasting results\n- Tank-free, direct faucet connection\n\nWhat We Don’t Like\n\n- Not compatible with all faucets\n\nThe Brondell Countertop Water Filtration System is one of those rare finds that blends power with convenience. We found that this countertop water filter delivers crisp, odor-free water while taking up surprisingly little space on the counter. The Brondell Cypress has been independently tested and certified by the [Water Quality Association (WQA)](https:\/\/wqa.org\/grow\/product-certification\/) to meet NSF\/ANSI standards 42, 53, and 372, and it uses a patented three-stage Nanotrap filtration system with carbon block technology to capture a wide range of impurities, including bacteria, viruses, [VOCs](https:\/\/www.epa.gov\/indoor-air-quality-iaq\/what-are-volatile-organic-compounds-vocs), and other harmful chemicals.\n\nDuring testing, we were impressed by how easy it is to set up. For most standard faucets, installation only required attaching the provided adaptor and tightening it into place, which took around 10 minutes. For those with nonstandard faucets, there’s an optional under-counter connection available for purchase. When we tried that method, it took closer to 30 minutes to hook up to the main cold water line and install the T-valve. Once connected, the system dispensed fresh, clean water instantly with no waiting required. One thing to note: The Brondell Cypress may not be compatible with pull-down or pull-out faucets, so check your fixture style before purchasing.\n\nThe filter trio includes a composite plus filter, a Nanotrap filter, and a carbon block filter. The first and third stages need to be replaced every six months, while the Nanotrap filter lasts about a year. Even with this multi-layer system, the Brondell takes up minimal counter space at just 3.75 x 10.5 x 13.5 inches. Between its sleek design and standout performance, it’s a reliable pick for anyone who wants cleaner, better-tasting water without the installation headaches of a built-in system.\n\n**Filtration Type:** 3-stage carbon and Nanotrap filtration \\| **Contaminants Filtered:** Chlorine, heavy metals, lead, PFOA, PFOS, VOCs, and other impurities \\| **Retains Minerals:** Yes \\| **Certified By:** WQA Gold Seal to NSF\/ANSI 42, 53, 401, and 372 \\| **Dimensions:** 10.5 x 13.5 x 3.75 inches\n\n- ![water filter from side, on counter next to sink](https:\/\/www.thespruceeats.com\/thmb\/22SMQroXpePoe2u-wBQJYYyCifc=\/fit-in\/1500x2616\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-brondell-cypress-countertop-system-diana-weesner-18-313827fec2de443bad1a72276de1995f.jpeg)\n  \n  ![water filter from side, on counter next to sink](https:\/\/www.thespruceeats.com\/thmb\/22SMQroXpePoe2u-wBQJYYyCifc=\/fit-in\/1500x2616\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-brondell-cypress-countertop-system-diana-weesner-18-313827fec2de443bad1a72276de1995f.jpeg)\n  Credit: The Spruce Eats\n- ![pressing button on top of water filter]()\n  \n  ![pressing button on top of water filter](https:\/\/www.thespruceeats.com\/thmb\/wDEN54Ma9XY42mZGIocvsIGtmfM=\/fit-in\/1500x2632\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-brondell-cypress-countertop-system-diana-weesner-12-c15d2c05a07741d599433d898699da76.jpeg)\n  Credit: The Spruce Eats\n- ![water filter box]()\n  \n  ![water filter box](https:\/\/www.thespruceeats.com\/thmb\/YVSjSWg3JZx8Rn03q16Zcu2QWVs=\/fit-in\/1500x2632\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-brondell-cypress-countertop-system-diana-weesner-21-c330ea13bc3a4881b3fa7e8f5b5a3892.jpeg)\n  Credit: The Spruce Eats\n\n- ![water filter from side, on counter next to sink](https:\/\/www.thespruceeats.com\/thmb\/-AjwSSJilQfZ-77ry6PgCYeqoPI=\/fit-in\/200x2616\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-brondell-cypress-countertop-system-diana-weesner-18-313827fec2de443bad1a72276de1995f.jpeg)\n  \n  ![water filter from side, on counter next to sink](https:\/\/www.thespruceeats.com\/thmb\/-AjwSSJilQfZ-77ry6PgCYeqoPI=\/fit-in\/200x2616\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-brondell-cypress-countertop-system-diana-weesner-18-313827fec2de443bad1a72276de1995f.jpeg)\n- ![pressing button on top of water filter](https:\/\/www.thespruceeats.com\/thmb\/DNOGtJWNQCHTJxUMutwDJAniy2o=\/fit-in\/200x2632\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-brondell-cypress-countertop-system-diana-weesner-12-c15d2c05a07741d599433d898699da76.jpeg)\n  \n  ![pressing button on top of water filter](https:\/\/www.thespruceeats.com\/thmb\/DNOGtJWNQCHTJxUMutwDJAniy2o=\/fit-in\/200x2632\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-brondell-cypress-countertop-system-diana-weesner-12-c15d2c05a07741d599433d898699da76.jpeg)\n- ![water filter box](https:\/\/www.thespruceeats.com\/thmb\/S7knYlnkUtFrWtUYhnIKG30Va20=\/fit-in\/200x2632\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-brondell-cypress-countertop-system-diana-weesner-21-c330ea13bc3a4881b3fa7e8f5b5a3892.jpeg)\n  \n  ![water filter box](https:\/\/www.thespruceeats.com\/thmb\/S7knYlnkUtFrWtUYhnIKG30Va20=\/fit-in\/200x2632\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-brondell-cypress-countertop-system-diana-weesner-21-c330ea13bc3a4881b3fa7e8f5b5a3892.jpeg)\n\n## Best for Fluoride Removal\n[AlcaPure Countertop Reverse Osmosis Filter](https:\/\/www.amazon.com\/dp\/B0076CQXAQ?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851)\n\n[![Amazon AlcaPure Reverse Osmosis Countertop Water Filter](https:\/\/www.thespruceeats.com\/thmb\/XslYXytl2wYF0h4vmzXP2mJQCs0=\/fit-in\/1500x1000\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/alcapure-countertop-reverse-osmosis-filter-02b2b536a6e4454f9abd01642ab15747.jpg) ![Amazon AlcaPure Reverse Osmosis Countertop Water Filter](https:\/\/www.thespruceeats.com\/thmb\/XslYXytl2wYF0h4vmzXP2mJQCs0=\/fit-in\/1500x1000\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/alcapure-countertop-reverse-osmosis-filter-02b2b536a6e4454f9abd01642ab15747.jpg)](https:\/\/www.amazon.com\/dp\/B0076CQXAQ?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851)\n\nCredit: Amazon\n\n[\\$370 \\$299 at Amazon](https:\/\/www.amazon.com\/dp\/B0076CQXAQ?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851)\n\nWhat We Like\n\n- Removes fluoride and other common contaminants\n- Smooth, refreshing water\n- Reverse osmosis system\n\nWhat We Don’t Like\n\n- Larger countertop footprint\n- Filters water slowly\n\nFor those focused on fluoride removal, the AlcaPure Countertop Reverse Osmosis Filter proved to be one of the strongest performers we tested. With growing concern that excessive fluoride may cause issues such as tooth discoloration and bone weakness, this model is designed to help address that by removing up to 95 percent of fluoride and as much as 99 percent of other contaminants.12\n\nSetup is simple since it’s a countertop model that doesn’t need plumbing: Just plug it in and pour water into the front drawer. During testing, we found it removed all traces of any chlorine odor as well as the faint metallic taste from our city tap water. The resulting water tasted light, crisp, and noticeably cleaner. We did notice that the water filtering process does take some patience. It takes roughly 15 minutes to produce a half-gallon of clean water, so you’ll likely find yourself refilling the unfiltered water drawer throughout the day.\n\nThe device’s reverse osmosis membrane and filters have been certified by the [International Association of Plumbing & Mechanical Officials](https:\/\/www.iapmo.org\/) (IAPMO) to NSF standards 42 and 58, but the unit itself is not fully NSF-certified according to the NSF database. The membrane should be replaced every two years, while the other three filters last about a year.3 A built-in LED display conveniently signals when it’s time for replacements, taking the guesswork out of maintenance.\n\nWhile the AlcaPure sits on the higher end of the price range and is a bit larger than some of the competition (9.5 x 14.5 x 16.25 inches), its impressive performance, polished design, and highly effective fluoride reduction make it well worth the investment.\n\n**Filtration Type:** Reverse osmosis \\| **Contaminants Filtered:** Chlorine, industrial chemicals, pesticides, herbicides, turbidity, VOCs, microorganisms \\| **Retains Minerals:** No \\| **Certified By:** IAPMO \\| **Dimensions:** 9\\.5 x 14.5 x 16.25 inches\n\n- ![alcapure countertop water filter on floor](https:\/\/www.thespruceeats.com\/thmb\/mt5Sqa2APuh2mLvFTD-80mRZn8s=\/fit-in\/1500x2667\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-rkin-alcapure-reverse-osmosis-countertop-jennifer-may-09-26b09fdc62154504a90da2a0e532e8f7.jpeg)\n  \n  ![alcapure countertop water filter on floor](https:\/\/www.thespruceeats.com\/thmb\/mt5Sqa2APuh2mLvFTD-80mRZn8s=\/fit-in\/1500x2667\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-rkin-alcapure-reverse-osmosis-countertop-jennifer-may-09-26b09fdc62154504a90da2a0e532e8f7.jpeg)\n  Credit: The Spruce Eats\n- ![countertop water filter on counter, plugged in with orange lights on]()\n  \n  ![countertop water filter on counter, plugged in with orange lights on](https:\/\/www.thespruceeats.com\/thmb\/ttEZy3PP94f_fuhgB5deAePpfkU=\/fit-in\/1500x2624\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-rkin-alcapure-reverse-osmosis-countertop-jennifer-may-01-ef4645f8ebcb47988b6167166ad51708.jpeg)\n  Credit: The Spruce Eats\n- ![countertop water filter water tank aerial view]()\n  \n  ![countertop water filter water tank aerial view](https:\/\/www.thespruceeats.com\/thmb\/6r6NyuawNRfJKxQxMTZz068f6nQ=\/fit-in\/1500x2656\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-rkin-alcapure-reverse-osmosis-countertop-jennifer-may-26-cddb240f1c5f41fd9a75b2b492f50bd4.jpeg)\n  Credit: The Spruce Eats\n\n- ![alcapure countertop water filter on floor](https:\/\/www.thespruceeats.com\/thmb\/GXi4I8Y_tQ8SDjXnNkHIYnAOx54=\/fit-in\/200x2667\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-rkin-alcapure-reverse-osmosis-countertop-jennifer-may-09-26b09fdc62154504a90da2a0e532e8f7.jpeg)\n  \n  ![alcapure countertop water filter on floor](https:\/\/www.thespruceeats.com\/thmb\/GXi4I8Y_tQ8SDjXnNkHIYnAOx54=\/fit-in\/200x2667\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-rkin-alcapure-reverse-osmosis-countertop-jennifer-may-09-26b09fdc62154504a90da2a0e532e8f7.jpeg)\n- ![countertop water filter on counter, plugged in with orange lights on](https:\/\/www.thespruceeats.com\/thmb\/MMpqx4xh_JChOi39jJrFQ-zk2y4=\/fit-in\/200x2624\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-rkin-alcapure-reverse-osmosis-countertop-jennifer-may-01-ef4645f8ebcb47988b6167166ad51708.jpeg)\n  \n  ![countertop water filter on counter, plugged in with orange lights on](https:\/\/www.thespruceeats.com\/thmb\/MMpqx4xh_JChOi39jJrFQ-zk2y4=\/fit-in\/200x2624\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-rkin-alcapure-reverse-osmosis-countertop-jennifer-may-01-ef4645f8ebcb47988b6167166ad51708.jpeg)\n- ![countertop water filter water tank aerial view](https:\/\/www.thespruceeats.com\/thmb\/-TsPGnl33bRKHuuyRA4SRp9Nx3s=\/fit-in\/200x2656\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-rkin-alcapure-reverse-osmosis-countertop-jennifer-may-26-cddb240f1c5f41fd9a75b2b492f50bd4.jpeg)\n  \n  ![countertop water filter water tank aerial view](https:\/\/www.thespruceeats.com\/thmb\/-TsPGnl33bRKHuuyRA4SRp9Nx3s=\/fit-in\/200x2656\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-rkin-alcapure-reverse-osmosis-countertop-jennifer-may-26-cddb240f1c5f41fd9a75b2b492f50bd4.jpeg)\n\n## Best Compact\n[Aquasana Clean Water Machine](https:\/\/www.amazon.com\/Aquasana-OptimH2O-Whole-Filtration-System\/dp\/B07MG7S77N\/?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851)\n\n[![Amazon Aquasana Clean Water Machine Countertop Water Filter](https:\/\/www.thespruceeats.com\/thmb\/JdJS_yfxHBMno-LrC35wA0i1Kcc=\/fit-in\/1500x1000\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/amazon-aquasana-clean-water-machine-countertop-water-filter-cf4b42a923d84fd688bb7201a370db63.jpg) ![Amazon Aquasana Clean Water Machine Countertop Water Filter](https:\/\/www.thespruceeats.com\/thmb\/JdJS_yfxHBMno-LrC35wA0i1Kcc=\/fit-in\/1500x1000\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/amazon-aquasana-clean-water-machine-countertop-water-filter-cf4b42a923d84fd688bb7201a370db63.jpg)](https:\/\/www.amazon.com\/Aquasana-OptimH2O-Whole-Filtration-System\/dp\/B07MG7S77N\/?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851)\n\nCredit: Amazon\n\n[\\$200 at Amazon](https:\/\/www.amazon.com\/Aquasana-OptimH2O-Whole-Filtration-System\/dp\/B07MG7S77N\/?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851)   [View on Walmart](https:\/\/www.walmart.com\/ip\/Aquasana-Clean-Water-Machine-Countertop-Water-Filter-System-AQ-CWM2-B\/3839001059)   [View on Aquasana.com](https:\/\/www.aquasana.com\/countertop-water-filters\/clean-water-machine\/black-100348638.html)\n\nWhat We Like\n\n- Fast filtration time\n- Quiet-powered filtration\n- Keeps essential minerals\n\nWhat We Don’t Like\n\n- Needs an outlet nearby\n\nIf you’re looking for a fast, compact, and reliable countertop filter, the Aquasana Clean Water Machine hits all the right notes. This countertop water filter measures on the smaller side at just 9.7 x 8 x 11.6 inches, making it easy to find a countertop spot for it under a cabinet. You’ll also need to place it near an outlet since that’s part of the magic. This filter uses powered filtration rather than gravity. That design allows you to access filtered water much faster than with most systems. In testing, we found that it only took 15 seconds to filter 16 ounces of water. We did notice a small issue when filling a gallon container, as the dispenser sits only a few inches from the filter housing, leaving limited clearance and some minor splashing.\n\nThe filter is easy to operate by simply pressing the rapid-release button to start and tapping it again to stop. We were impressed that this single activated carbon filter cleared up the cloudy appearance of our tap water and removed both metallic and chlorine odors and aftertaste. To boot, this model doesn’t remove beneficial minerals such as calcium, magnesium, and potassium. Tested and certified by the WQA, this filter meets NSF standards 42, 53, and 401.\n\nSetup took us about 10 minutes, including flushing the system as the company recommends when replacing the filter. Each filter lasts around six months, and a built-in indicator light lets you know when it’s time for a replacement. The filters are conveniently sold in two-packs for a full year of clean water.\n\n**Filtration Type:** Carbon filtration, ion exchange, and sub-micron mechanical filtration \\| **Contaminants Filtered:** Removes 78 contaminants, including chlorine, chloramine, lead, VOCs, asbestos, turbidity, mercury, cysts, PFOA\/PFOS, herbicides, pesticides, pharmaceuticals, and microplastics \\| **Retains Minerals:** Yes \\| **Certified By:** WQA \\| **Dimensions:** 9\\.7 x 8 x 11.6 inches\n\n- ![aquasana water filter aerial view](https:\/\/www.thespruceeats.com\/thmb\/HQrOoleYTY2fSVIPfv-4Bq3j5qk=\/fit-in\/1500x2662\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-aquasana-clean-machine-michael-navarro-15-8e466d6f20594584a529f423ba97e952.jpeg)\n  \n  ![aquasana water filter aerial view](https:\/\/www.thespruceeats.com\/thmb\/HQrOoleYTY2fSVIPfv-4Bq3j5qk=\/fit-in\/1500x2662\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-aquasana-clean-machine-michael-navarro-15-8e466d6f20594584a529f423ba97e952.jpeg)\n  Credit: The Spruce Eats\n- ![aquasana water filter from side, showing mug filled with water]()\n  \n  ![aquasana water filter from side, showing mug filled with water](https:\/\/www.thespruceeats.com\/thmb\/IPY4EsooIiuRj0VdQIbMyJKo80M=\/fit-in\/1500x2632\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-aquasana-clean-machine-michael-navarro-14-2aac3d2b9d5444acb924b3aafdea8770.jpeg)\n  Credit: The Spruce Eats\n- ![aquasana water filter water reservoir]()\n  \n  ![aquasana water filter water reservoir](https:\/\/www.thespruceeats.com\/thmb\/o7aUFvHugw3Ad9ZeLzaM3_zTLIg=\/fit-in\/1500x2624\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-aquasana-clean-machine-michael-navarro-16-6e2915e88242485894110c536369569a.jpeg)\n  Credit: The Spruce Eats\n\n- ![aquasana water filter aerial view](https:\/\/www.thespruceeats.com\/thmb\/vZn1StG1q5ZprrmTfnLB9d3wyWc=\/fit-in\/200x2662\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-aquasana-clean-machine-michael-navarro-15-8e466d6f20594584a529f423ba97e952.jpeg)\n  \n  ![aquasana water filter aerial view](https:\/\/www.thespruceeats.com\/thmb\/vZn1StG1q5ZprrmTfnLB9d3wyWc=\/fit-in\/200x2662\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-aquasana-clean-machine-michael-navarro-15-8e466d6f20594584a529f423ba97e952.jpeg)\n- ![aquasana water filter from side, showing mug filled with water](https:\/\/www.thespruceeats.com\/thmb\/pw71dGMNYywX_bkBJ3hmRdLP-10=\/fit-in\/200x2632\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-aquasana-clean-machine-michael-navarro-14-2aac3d2b9d5444acb924b3aafdea8770.jpeg)\n  \n  ![aquasana water filter from side, showing mug filled with water](https:\/\/www.thespruceeats.com\/thmb\/pw71dGMNYywX_bkBJ3hmRdLP-10=\/fit-in\/200x2632\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-aquasana-clean-machine-michael-navarro-14-2aac3d2b9d5444acb924b3aafdea8770.jpeg)\n- ![aquasana water filter water reservoir](https:\/\/www.thespruceeats.com\/thmb\/53kKGrtg0k4qnyXKf4OEbRIhNHM=\/fit-in\/200x2624\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-aquasana-clean-machine-michael-navarro-16-6e2915e88242485894110c536369569a.jpeg)\n  \n  ![aquasana water filter water reservoir](https:\/\/www.thespruceeats.com\/thmb\/53kKGrtg0k4qnyXKf4OEbRIhNHM=\/fit-in\/200x2624\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-aquasana-clean-machine-michael-navarro-16-6e2915e88242485894110c536369569a.jpeg)\n\n## Best Large\n[Big Berkey Water Filter](https:\/\/www.amazon.com\/Berkey-Gravity-Fed-Filter-Purification-Elements\/dp\/B00CYW3EVO?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851)\n\n[![Amazon Big Berkey Gravity-Fed Water Purifier](https:\/\/www.thespruceeats.com\/thmb\/cqsCpbTrI80Obgt5N7DUCu1ooco=\/fit-in\/1500x1000\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/amazon-big-berkey-gravity-fed-water-purifier-6039ae3f515a45d89c607a463739775c.jpg) ![Amazon Big Berkey Gravity-Fed Water Purifier](https:\/\/www.thespruceeats.com\/thmb\/cqsCpbTrI80Obgt5N7DUCu1ooco=\/fit-in\/1500x1000\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/amazon-big-berkey-gravity-fed-water-purifier-6039ae3f515a45d89c607a463739775c.jpg)](https:\/\/www.amazon.com\/Berkey-Gravity-Fed-Filter-Purification-Elements\/dp\/B00CYW3EVO?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851)\n\nCredit: Amazon\n\n[\\$367 at Amazon](https:\/\/www.amazon.com\/Berkey-Gravity-Fed-Filter-Purification-Elements\/dp\/B00CYW3EVO?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851)   [View on Bigberkeywaterfilters.com](https:\/\/www.bigberkeywaterfilters.com\/big-berkey-water-filter.html?berkey_system_filters_included=56)   [View on Bigberkeywaterfilters.com](https:\/\/www.bigberkeywaterfilters.com\/big-berkey-water-filter.html)\n\nWhat We Like\n\n- Two-gallon capacity\n- Long-lasting filters\n- Sleek, durable stainless steel design\n- No power or plumbing required\n\nWhat We Don’t Like\n\n- Large size needs dedicated counter space\n\nThe Big Berkey Water Filter offers a high-capacity system that holds more than two gallons of water, making it ideal for households of two to four. While it does take up a fair amount of vertical height (21 inches high), the trade-off is fewer refills and consistently great-tasting water.\n\nThis model uses a pair of Black Berkey filter elements, each rated to purify up to 6,000 gallons of water. How long that lasts depends on daily use. A family filtering about two gallons per day could see the filters last as long as eight years, though heavier use will shorten their lifespan. When the flow rate slows or you hit capacity, the filters can be cleaned or replaced. You can also install additional filters to increase the flow rate or double the filtration capacity. For those who need added purification, a separate pair of fluoride and arsenic filters is available. The system doesn’t require electricity or a faucet connection, though it does benefit from regular monitoring for best performance. The filters were tested and certified by Los Angeles County and independent labs to NSF standards 53 and 42.\n\nIn testing, we found that the Big Berkey removed the metallic smell and taste from our tap water, replacing it with a clean, mineral-like finish that felt smooth and refreshing. The stainless steel build gives it a polished, modern look that feels like a more elevated version of a standard water cooler. Because it’s gravity-fed, filtration takes about one hour per gallon. Water is dispensed by pressing the lever at the base, which releases a steady stream from the spigot. We found it most convenient to keep the system near the sink for easy refills.\n\nPlease note that Big Berkey does not warranty products purchased through Amazon. The [company states](https:\/\/berkeyfilterwater.com\/contact\/https-berkeyfilterwater-com-contact-shipping-returns\/): “We routinely receive requests for assistance\/support from Amazon purchases, and most times are unfortunately unable to provide service support. As a result, and due to the inability of Amazon to assist in policing and removing fraudulent\/imitation Berkey products, we do not recommend purchasing through Amazon.”\n\n**Filtration Type:** Carbon filtration and ion exchange with optional post-filtration fluoride filters \\| **Contaminants Filtered:** Heavy metals, VOCs, nitrates, radon 222, trihalomethanes, chromium, herbicides, pesticides, organic solvents, others \\| **Retains Minerals:** Yes \\| **Certified By:** Los Angeles County and independent labs \\| **Dimensions:** 21 x 8.5 x 8.5 inches\n\n- ![big berkey water filter on counter next to lots of citrus fruits, apples, avocados, and bananas](https:\/\/www.thespruceeats.com\/thmb\/aLj4wpWcp9_mqHyB5Tq_U9eyRKM=\/fit-in\/1500x2667\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-big-berkey-kim-souza-21-bbdc10a9f63f4b1686137d1dd2f05d5d.jpeg)\n  \n  ![big berkey water filter on counter next to lots of citrus fruits, apples, avocados, and bananas](https:\/\/www.thespruceeats.com\/thmb\/aLj4wpWcp9_mqHyB5Tq_U9eyRKM=\/fit-in\/1500x2667\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-big-berkey-kim-souza-21-bbdc10a9f63f4b1686137d1dd2f05d5d.jpeg)\n  Credit: The Spruce Eats\n- ![sink filling big berkey water filter]()\n  \n  ![sink filling big berkey water filter](https:\/\/www.thespruceeats.com\/thmb\/XuLiP5m28TyqF28zoyz5luJ6cyA=\/fit-in\/1500x2665\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-big-berkey-kim-souza-01-62619ebe74a8402fa61f258b9b1a5593.jpeg)\n  Credit: The Spruce Eats\n- ![all parts of big berkey water filter before putting together]()\n  \n  ![all parts of big berkey water filter before putting together](https:\/\/www.thespruceeats.com\/thmb\/4pBVG9lob5ccL5iEaHLgz28b4Og=\/fit-in\/1500x2624\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-big-berkey-kim-souza-33-48823dbdbd5c4df59207dfd210b1dcea.jpeg)\n  Credit: The Spruce Eats\n\n- ![big berkey water filter on counter next to lots of citrus fruits, apples, avocados, and bananas]()\n  \n  ![big berkey water filter on counter next to lots of citrus fruits, apples, avocados, and bananas](https:\/\/www.thespruceeats.com\/thmb\/QWVPgZJtyVIxtobwP0m0bF4lSaY=\/fit-in\/200x2667\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-big-berkey-kim-souza-21-bbdc10a9f63f4b1686137d1dd2f05d5d.jpeg)\n- ![sink filling big berkey water filter]()\n  \n  ![sink filling big berkey water filter](https:\/\/www.thespruceeats.com\/thmb\/S_-nR_MAv5Gva3w6Cu-O86FBRQI=\/fit-in\/200x2665\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-big-berkey-kim-souza-01-62619ebe74a8402fa61f258b9b1a5593.jpeg)\n- ![all parts of big berkey water filter before putting together]()\n  \n  ![all parts of big berkey water filter before putting together](https:\/\/www.thespruceeats.com\/thmb\/6HHmHBAFK6qlZwNX26cnRNBw7CA=\/fit-in\/200x2624\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-big-berkey-kim-souza-33-48823dbdbd5c4df59207dfd210b1dcea.jpeg)\n\n## Best Reverse Osmosis\n[AquaTru Countertop Water Filtration System](https:\/\/www.amazon.com\/Countertop-Filtration-Purification-System-Exclusive\/dp\/B01MDLMBKC\/?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851)\n\n[![Amazon AquaTru Countertop Water Filtration Purification System]() ![Amazon AquaTru Countertop Water Filtration Purification System](https:\/\/www.thespruceeats.com\/thmb\/h5jH1tO9KTkzW-GuNvvapv1WYok=\/fit-in\/1500x1000\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/AquaTru-Countertop-Water-Filtration-Purification-System-77d02833b6434db2898a0acc551b78f8.jpg)](https:\/\/www.amazon.com\/Countertop-Filtration-Purification-System-Exclusive\/dp\/B01MDLMBKC\/?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851)\n\nCredit: Amazon\n\n[\\$465 at Amazon](https:\/\/www.amazon.com\/Countertop-Filtration-Purification-System-Exclusive\/dp\/B01MDLMBKC\/?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851)   [\\$475 at Wayfair](https:\/\/www.wayfair.com\/AquaTru--AquaTru-Countertop-Water-Filtration-System-with-Exclusive-4Stage-Ultra-Reverse-Osmosis-Technology-90AT03AT01-L3600-K~AUAT1000.html?slpfid=3)\n\n[\\$466 \\$465 at Home Depot](https:\/\/www.homedepot.com\/p\/AQUA-TRU-AquaTru-Reverse-Osmosis-Counter-Top-Water-Filtration-System-with-BPA-Free-Clean-Water-Tank-AT2000\/302282068)\n\nWhat We Like\n\n- Removes over 80 contaminants\n- Produces exceptionally pure water\n- Easy-to-read digital display\n\nWhat We Don’t Like\n\n- Must hold button to pour\n\nReverse osmosis works by pushing water through a semipermeable membrane that captures some of the smallest contaminants, even those on a molecular level. This process removes substances like salt, dirt, and other particulates that most standard filters cannot touch, producing an exceptionally pure taste and clear water. The AquaTru Countertop Reverse Osmosis Filter uses a four-stage filtration system, including a reverse osmosis membrane, to transform tap water into clean, great-tasting drinking water. To use, simply fill the one-gallon tank, and the system converts it into about three quarts of filtered water.\n\nDuring testing, we found that it completely transformed our cloudy, funky-tasting tap water into crystal-clear, odor-free water with no perceptible aftertaste. Setup required a few components, but the helpful instructional videos made the process easy to follow. To dispense water, press and hold the button, then release when your glass is full. We did notice slight dripping after releasing the button and found it mildly inconvenient to have to hold it down, but its sleek, modern design more than made up for that small drawback. It is also reasonably compact but does require an outlet for operation.\n\nThe AquaTru includes a digital display that shows when it is time to replace the filters. The reverse osmosis filter lasts around two years, while the pre\/carbon filter lasts six months and the carbon VOC filter lasts up to one year. Replacements are sold as a three-piece set. This system has been tested and certified by the IAPMO to meet NSF standards 42, 53, 58, 401, and P473, and the filters remove 83 contaminants, including lead, arsenic, fluoride, chlorine, and nitrates.\n\n**Filtration Type:** 4-stage reverse osmosis \\| **Contaminants Filtered:** Removes 83 contaminants, including lead, arsenic, PFAs, fluoride, chlorine, and nitrates \\| **Retains Minerals:** No \\| **Certified By:** Tested and certified by IAPMO to meet NSF\/ANSI standards 41, 53, 58, 401 \\| **Dimensions:** 14 x 14 x 12 inches\n\n- ![digital interface for aquatru water filter]()\n  \n  ![digital interface for aquatru water filter](https:\/\/www.thespruceeats.com\/thmb\/jC6iTZHRkL70O3J0wJK1UG0Yu_Y=\/fit-in\/1500x2016\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-aquatru-countertop-filtration-purification-system-tracy-allison-29-cf555c97734044029fbb6bfbc3841325.jpeg)\n  Credit: The Spruce Eats\n- ![filling tank of aquatru water filter with sink faucet]()\n  \n  ![filling tank of aquatru water filter with sink faucet](https:\/\/www.thespruceeats.com\/thmb\/0z1ZItxxYJ9LqfVcAT96oBIVUaw=\/fit-in\/1500x1944\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-aquatru-countertop-filtration-purification-system-tracy-allison-21-1e8df6e2dc894fc481d05dff5d00e2f2.jpeg)\n  Credit: The Spruce Eats\n- ![water tank of aquatru water filter]()\n  \n  ![water tank of aquatru water filter](https:\/\/www.thespruceeats.com\/thmb\/XNESYCAX8k-jfRFy6DzBSJCZ3EI=\/fit-in\/1500x2640\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-aquatru-countertop-filtration-purification-system-tracy-allison-62-6417086652f94e4eb3edee0771a75b2a.jpeg)\n  Credit: The Spruce Eats\n- ![aquatru water filter]()\n  \n  ![aquatru water filter](https:\/\/www.thespruceeats.com\/thmb\/Tomb68uVxKkR58QSuqEatu5XGcE=\/fit-in\/1500x2016\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-aquatru-countertop-filtration-purification-system-tracy-allison-04-cb7985f6ded04175b871fecebfc2dd9c.jpeg)\n  Credit: The Spruce Eats\n\n- ![digital interface for aquatru water filter]()\n  \n  ![digital interface for aquatru water filter](https:\/\/www.thespruceeats.com\/thmb\/QTJy9iNgaqCrFagUIAfOEh3pXlk=\/fit-in\/200x2016\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-aquatru-countertop-filtration-purification-system-tracy-allison-29-cf555c97734044029fbb6bfbc3841325.jpeg)\n- ![filling tank of aquatru water filter with sink faucet]()\n  \n  ![filling tank of aquatru water filter with sink faucet](https:\/\/www.thespruceeats.com\/thmb\/q-H6yRgq_vKB5k_f82xj5Ljna1c=\/fit-in\/200x1944\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-aquatru-countertop-filtration-purification-system-tracy-allison-21-1e8df6e2dc894fc481d05dff5d00e2f2.jpeg)\n- ![water tank of aquatru water filter]()\n  \n  ![water tank of aquatru water filter](https:\/\/www.thespruceeats.com\/thmb\/Y1x1vh83r9GAVbqg5_GgPqRp8t0=\/fit-in\/200x2640\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-aquatru-countertop-filtration-purification-system-tracy-allison-62-6417086652f94e4eb3edee0771a75b2a.jpeg)\n- ![aquatru water filter]()\n  \n  ![aquatru water filter](https:\/\/www.thespruceeats.com\/thmb\/fK_BphJ-LzeKanTxXuNKUF45dxM=\/fit-in\/200x2016\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-aquatru-countertop-filtration-purification-system-tracy-allison-04-cb7985f6ded04175b871fecebfc2dd9c.jpeg)\n\nContinue to 5 of 9 below.\n\n## Best With a Removable Pitcher\n[Bluevua Reverse Osmosis Countertop Water Filter](https:\/\/www.amazon.com\/Bluevua-RO100ROPOT-Countertop-Purification-Filtration\/dp\/B09KRDK677?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851)\n\n[![Amazon Bluevua-ro100ropot-reverse-osmosis-system-countertop-water-filter]() ![Amazon Bluevua-ro100ropot-reverse-osmosis-system-countertop-water-filter](https:\/\/www.thespruceeats.com\/thmb\/LwFh-z5C9AiuZ9gOJkZ_zn_mJ7w=\/fit-in\/1500x1000\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/bluevua-ro100ropot-reverse-osmosis-system-countertop-water-filter-6bc82533070a4788868e8124f478a370.jpg)](https:\/\/www.amazon.com\/Bluevua-RO100ROPOT-Countertop-Purification-Filtration\/dp\/B09KRDK677?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851)\n\nCredit: Amazon\n\n[\\$434 \\$299 at Amazon](https:\/\/www.amazon.com\/Bluevua-RO100ROPOT-Countertop-Purification-Filtration\/dp\/B09KRDK677?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851)\n\n[\\$434 at Bluevua.com](https:\/\/bluevua.com\/products\/ropot-countertop-reverse-osmosis-water-system)\n\nWhat We Like\n\n- Elegant glass carafe design\n- Fast filtration time\n- Adds back essential minerals\n\nWhat We Don’t Like\n\n- Not fully NSF-certified\n\nThe Bluevua Reverse Osmosis Countertop Water Filter combines the simplicity of a water filter pitcher with the power of a multi-stage filtration system. Designed much like a drip coffee maker, it automatically fills its glass carafe with purified water once the filtration process finishes. The carafe is made of durable borosilicate glass, holds up to seven cups, and features easy-to-read measurement markings.\n\nThe setup for this water filter is simpler than most. Just plug it in, flush the system a few times before first use as the manufacturer recommends, and press the button to start filtering. In testing, we found that it was impressively fast, producing a full pitcher of clean water in less than five minutes. This system uses a four-stage filtration process that includes a reverse osmosis membrane.\n\nWe found that it produced clean, crisp-tasting water compared to the cloudy tap water poured into the unfiltered side. We also appreciated the optional mineral insert, which restores essential minerals and gives the water a refreshing mineral-water flavor.\n\nThe stage one, two, and four filters need replacing about once a year, while the stage three filter lasts up to two years. A digital display shows the water quality, pitcher level, and filter life, conveniently alerting you when it’s time to replace each one. SGS has certified these filters to NSF standards 42, 53, and 401, though the system itself is not fully NSF-certified according to the NSF database.\n\n**Filtration Type:** 4-stage reverse osmosis \\| **Contaminants Filtered:** Chlorides, lead, chlorine, fluoride, heavy metals, mercury, radium, chromium, arsenic, chloramine \\| **Retains Minerals:** No \\| **Certified By:** SGS \\| **Dimensions:** 15 x 10.9 x 14.3 inches\n\n- ![bluevua water filter with some packaging still on]()\n  \n  ![bluevua water filter with some packaging still on](https:\/\/www.thespruceeats.com\/thmb\/C0T-xYtEp7GgTIJQpBIFNQfbhRw=\/fit-in\/1500x2666\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-bluevua-ro100ropot-reverse-osmosis-system-countertop-megan-wood-13-61c9ef4b046847888f2a97e0433d8864.jpeg)\n  Credit: The Spruce Eats\n- ![digital screen on water filter]()\n  \n  ![digital screen on water filter](https:\/\/www.thespruceeats.com\/thmb\/MmgOcITx9YAKg-QwYccdv1EbcJc=\/fit-in\/1500x2618\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-bluevua-ro100ropot-reverse-osmosis-system-countertop-megan-wood-16-02b364f8fb6741788bb3024d6bdace2f.jpeg)\n  Credit: The Spruce Eats\n- ![filter system on countertop water filter]()\n  \n  ![filter system on countertop water filter](https:\/\/www.thespruceeats.com\/thmb\/zE1wbtGxFRwPipU2YsTLqHndOLQ=\/fit-in\/1500x2666\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-bluevua-ro100ropot-reverse-osmosis-system-countertop-megan-wood-04-abc6d7ba3880405493206edb2918ae90.jpeg)\n  Credit: The Spruce Eats\n\n- ![bluevua water filter with some packaging still on]()\n  \n  ![bluevua water filter with some packaging still on](https:\/\/www.thespruceeats.com\/thmb\/J-FDbA1cU0cgQTXWVA-5bbhaLso=\/fit-in\/200x2666\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-bluevua-ro100ropot-reverse-osmosis-system-countertop-megan-wood-13-61c9ef4b046847888f2a97e0433d8864.jpeg)\n- ![digital screen on water filter]()\n  \n  ![digital screen on water filter](https:\/\/www.thespruceeats.com\/thmb\/24uxPQoOZ3leVMSq5PUFqAKfsjQ=\/fit-in\/200x2618\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-bluevua-ro100ropot-reverse-osmosis-system-countertop-megan-wood-16-02b364f8fb6741788bb3024d6bdace2f.jpeg)\n- ![filter system on countertop water filter]()\n  \n  ![filter system on countertop water filter](https:\/\/www.thespruceeats.com\/thmb\/2UwsGVzVdN9gzU7E4CIyKu1wChg=\/fit-in\/200x2666\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-bluevua-ro100ropot-reverse-osmosis-system-countertop-megan-wood-04-abc6d7ba3880405493206edb2918ae90.jpeg)\n\n## Best with Presets\n[Brita Hub Countertop Water Filter](https:\/\/www.amazon.com\/dp\/B0BLHX4JN1?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851)\n\n[![Brita Hub Instant Powerful Countertop Water Filtration]() ![Brita Hub Instant Powerful Countertop Water Filtration](https:\/\/www.thespruceeats.com\/thmb\/AzS3mpyiUyJymakM9Z6nvYcA4uQ=\/fit-in\/1500x1000\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/filtration-295a9c62541f4431878ddcf8fe262d56.jpg)](https:\/\/www.amazon.com\/dp\/B0BLHX4JN1?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851)\n\nCredit: Amazon\n\n[\\$195 at Amazon](https:\/\/www.amazon.com\/dp\/B0BLHX4JN1?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851)   [\\$150 at Target](https:\/\/www.target.com\/p\/brita-hub-instant-powerful-countertop-water-filtration-87340\/-\/A-88744239)   [View on Walmart](https:\/\/www.walmart.com\/ip\/Brita-Hub-12-Cup-Water-Filtrat\/2027104605)\n\nWhat We Like\n\n- Fast filtration time\n- Compact and modern aesthetic\n- Easy to use\n\nWhat We Don’t Like\n\n- Loud while running\n\nBest known for its classic water filter pitchers, Brita brings the same trusted simplicity to its countertop model. We found that setup was just as easy as it is with its pitchers, with clear instructions right on the machine itself. Simply plug it in, run a few water cycles, and it’s ready to go. In testing, we found that it produced clean, smooth, and refreshing water that tasted noticeably fresher than our tap water.\n\nOne standout feature of this model is its speed. It filtered water within seconds, going from the unfiltered tank to our glass almost instantly once we pressed the button. Because the stream dispenses quickly, we recommend using a taller glass to avoid splashing.\n\nWe also liked the sleek, space-saving design, which fits comfortably in smaller kitchens. The filter operates on the louder side while running, but it’s quiet when idle. It only filters room-temperature water, though we found that refrigerating the unfiltered tank before use provides a simple workaround as long as you remember to secure the opening at the bottom first.\n\nThe Brita Hub includes a digital display that lights up when it’s time to replace the filter, which typically lasts around six months. The system is tested and certified by the WQA to NSF standards 42 and 401 and by the IAPMO to NSF standard 53.  \n  \n**Filtration Type:** Pressurized carbon block filtration \\| **Contaminants Filtered:** 70+ contaminants, including chlorine, chloramine, lead, mercury, PFOA\/PFOS, and microplastics \\| **Retains Minerals:** Yes \\| **Certified By:** WQA to NSF\/ANSI 42 and 401; IAPMO to NSF\/ANSI 53 \\| **Dimensions:** 14.4 x 7.5 x 11.4 inches\n\n- ![brita water filter on counter]()\n  \n  ![brita water filter on counter](https:\/\/www.thespruceeats.com\/thmb\/tKaThstXSRkjBoJRkoLKpaiuU7o=\/fit-in\/1500x2616\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-brita-hub-instant-powerful-countertop-filtration-elena-garcia-16-cf925d0b3141418b91cc57eb31ee429e.jpeg)\n  Credit: The Spruce Eats\n- ![pressing button to dispense water on brita filter]()\n  \n  ![pressing button to dispense water on brita filter](https:\/\/www.thespruceeats.com\/thmb\/nzKBVol4IvMcxMcTXlyu9KDMOVo=\/fit-in\/1500x2632\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-brita-hub-instant-powerful-countertop-filtration-elena-garcia-10-f1e928ce618a439586a2135ab1fbfbde.jpeg)\n  Credit: The Spruce Eats\n- ![holding handle of water reservoir for brita countertop water filter]()\n  \n  ![holding handle of water reservoir for brita countertop water filter](https:\/\/www.thespruceeats.com\/thmb\/jVLu57ZHYvmwEegofrx5EipoVrI=\/fit-in\/1500x2667\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-brita-hub-instant-powerful-countertop-filtration-elena-garcia-18-7c951892626641e086bdd6b8b7a73c5b.jpeg)\n  Credit: The Spruce Eats\n\n- ![brita water filter on counter]()\n  \n  ![brita water filter on counter](https:\/\/www.thespruceeats.com\/thmb\/ydsmaE8oPnL9SLHu4FwmO63cjTU=\/fit-in\/200x2616\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-brita-hub-instant-powerful-countertop-filtration-elena-garcia-16-cf925d0b3141418b91cc57eb31ee429e.jpeg)\n- ![pressing button to dispense water on brita filter]()\n  \n  ![pressing button to dispense water on brita filter](https:\/\/www.thespruceeats.com\/thmb\/cLm1-0ByQzEkdANAUYsYlprFom8=\/fit-in\/200x2632\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-brita-hub-instant-powerful-countertop-filtration-elena-garcia-10-f1e928ce618a439586a2135ab1fbfbde.jpeg)\n- ![holding handle of water reservoir for brita countertop water filter]()\n  \n  ![holding handle of water reservoir for brita countertop water filter](https:\/\/www.thespruceeats.com\/thmb\/FGssm5aCUPP77QkPco7UiTDblKY=\/fit-in\/200x2667\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-brita-hub-instant-powerful-countertop-filtration-elena-garcia-18-7c951892626641e086bdd6b8b7a73c5b.jpeg)\n\n## Best Design\n[Boroux Legacy Gravity-Fed Countertop Stainless Steel Water Filter System](https:\/\/www.amazon.com\/dp\/B0DB68DD6Q?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851)\n\n[![Boroux Legacy Gravity-Fed Countertop Stainless Steel Water Filter System]() ![Boroux Legacy Gravity-Fed Countertop Stainless Steel Water Filter System](https:\/\/www.thespruceeats.com\/thmb\/BmrZC_eKs72U3JywCmptLJ_Smm8=\/fit-in\/1500x1000\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/boroux-legacy-gravity-fed-countertop-stainless-steel-water-filter-system-e30d89cf13454969991ad3db18fad6f4.jpg)](https:\/\/www.amazon.com\/dp\/B0DB68DD6Q?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851)\n\nCredit: Amazon\n\n[\\$375 at Amazon](https:\/\/www.amazon.com\/dp\/B0DB68DD6Q?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851)   [\\$375 at Boroux.com](https:\/\/boroux.com\/products\/legacy-water-filter-system)\n\nWhat We Like\n\n- Sleek stainless steel design\n- Noticeably light and clean-tasting water\n- Multiple matte color options\n\nWhat We Don’t Like\n\n- Complex setup and priming\n\nThe Boroux Legacy Compact Water Filter System blends timeless style with powerful gravity-fed filtration. Similar in concept to the Big Berkey, this system features upper and lower stainless steel chambers and comes in classic silver, matte black, or matte white finishes. During testing, we found the matte stainless look exceptionally sleek, as it fit seamlessly into our kitchen and looked more like decor than a countertop appliance.\n\nThe system operates with two Foundation filters, with the option to add fluoride filters for extra purification. Simply pour water into the upper chamber and let gravity do the work, slowly filtering it into the lower reservoir, which dispenses through a stainless steel spigot. We appreciated the water-level spigot, which made it easy to tell when to refill.\n\nOne downside we encountered with this system was the setup. Between reading instructions, watching online tutorials, and priming the filters, it took us nearly two hours to get it up and running. But in the end, we found that the results were worth it. The water tasted smooth and light, with a clean, refreshing finish. The system holds 1.8 gallons and performs best when kept near the sink for easy refills.\n\nFilters should be replaced about every 12 months, depending on usage. The Boroux Legacy Compact is WQA-certified to NSF\/ANSI\/CAN 372 for lead-free compliance and has been independently tested by third-party labs for additional performance claims.\n\n**Filtration Type:** Gravity-fed dual Foundation filters (optional fluoride add-ons) \\| **Contaminants Filtered:** Third-party tested for 70+ contaminants, including chlorine, chloramine, lead, mercury, and PFAS (PFOA\/PFOS) \\| **Retains Minerals:** Yes \\| **Certified By:** WQA to NSF\/ANSI\/CAN 372 (lead-free); additional performance independently tested \\| **Dimensions:** 17.5 x 8 x 8 inches\n\n## Best Budget\n[LifeStraw Water Filter Dispenser](https:\/\/www.amazon.com\/LifeStraw-Dispenser-BPA-Free-parasites-microplastics\/dp\/B0DGH2GRXX?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851)\n\n[![Amazon LifeStraw Home Studio Water Filter Dispenser]() ![Amazon LifeStraw Home Studio Water Filter Dispenser](https:\/\/www.thespruceeats.com\/thmb\/WNDZJhfJiOqLPgkqWZPggtKV-lA=\/fit-in\/1500x1000\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/lifestraw-home-studio-water-filter-dispenser-c1aa5541b2e54a9a92989565a6e1eed3.jpg)](https:\/\/www.amazon.com\/LifeStraw-Dispenser-BPA-Free-parasites-microplastics\/dp\/B0DGH2GRXX?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851)\n\nCredit: Amazon\n\n[\\$55 at Amazon](https:\/\/www.amazon.com\/LifeStraw-Dispenser-BPA-Free-parasites-microplastics\/dp\/B0DGH2GRXX?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851)   [View on Lifestraw.com](https:\/\/lifestraw.com\/products\/lifestraw-home-dispenser-studio)\n\nWhat We Like\n\n- Fits easily on small countertops\n- Stylish color options\n- Refreshing, clean taste\n\nWhat We Don’t Like\n\n- Spigot placement limits positioning\n\nThe LifeStraw Home Studio Water Filter Dispenser proves that small can still be mighty. Compact enough for most countertops, this model offers clean, great-tasting water in a sleek, modern design available in colors like orchid pink, jade green, and soft neutrals too.\n\nSetup is refreshingly simple: rinse the carbon filter, twist it into place, and run a few rinse cycles. The 10-cup dispenser filters a full batch of water in about 10 to 15 minutes, combining a membrane microfilter that lasts roughly one year (264 gallons) with an activated carbon and ion exchange filter that should be replaced every two months (40 gallons). Both filter types are sold separately and install easily with a twist. Overall, we were highly impressed by the fresh, crisp taste of the filtered water, especially given the unit’s minimalist design and easy setup.\n\nIn testing, we found that the spigot placement at the base made positioning a little tricky. It needs to hang slightly off the edge of the counter or sink to dispense water. However, at just over 10 inches tall and 6.7 inches wide, it can also fit inside a refrigerator if you prefer chilled, filtered water. We also found that filling the upper reservoir about three-quarters full, or roughly seven to eight cups, allowed for the smoothest flow and prevented water from lingering in the top chamber.\n\nThis dispenser is independently tested to meet NSF\/ANSI standards 42 and 53 and is proven to remove bacteria, parasites, microplastics, chlorine, organic chemical matter, and heavy metals like lead, all while retaining healthy minerals.\n\n**Filtration Type:** Membrane microfilter + activated carbon + ion exchange\\| **Contaminants Filtered:** Bacteria, parasites, microplastics, chlorine, organic chemical matter, and heavy metals including lead \\| **Retains Minerals:** Yes \\| **Certified By:** Independently tested to meet NSF\/ANSI 42, 53, 401, P473 (PFAS) \\| **Dimensions:** 10.4 x 6.7 x 8.5 inches\n\n## Final Verdict\nOverall, we were most impressed by the [Brondell Cypress Three-Stage Countertop Water Filtration System](https:\/\/www.amazon.com\/Brondell-Cypress-Countertop-Filter-Certified\/dp\/B00EEDJSES\/?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851) for its quick setup and clean, odor-free taste. For fluoride removal, the [AlcaPure Countertop Reverse Osmosis Filter](https:\/\/www.amazon.com\/dp\/B0076CQXAQ?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851) is our top choice for its powerful and efficient filtration system.\n\n## How We Tested Countertop Water Filters\nWe spent more than 1,395 hours testing 11 of the most popular countertop water filters using tap water from New York, San Francisco, Seattle, and several cities in the Midwest and South. Each model was rated on taste, filtration speed, ease of use, design, and overall value to see how it performed in everyday use.\n\nPlease note that this test focused on aesthetic performance, including taste, smell, and usability, and did not evaluate contaminant removal such as lead, pharmaceuticals, or pesticides. All products included on this list are NSF-certified or certified by a third party to NSF standards. For details, see individual product certifications or verify listings directly with NSF.\n\n- **Taste and Smell:** To start, we sampled unfiltered tap water and compared it to the filtered version from each unit. Our testers noted how effectively the systems removed metallic, sulfur, and chlorine flavors and whether the final result tasted clean, light, and refreshing enough to drink all day.\n- **Ease of Use:** We tracked how long it took each filter to process a full batch, how often refills were needed, and how intuitive the installation and operation felt. Filters that were quick to set up, simple to refill, and easy to maintain scored highest for daily convenience.\n- **Design & Value:** Our testers assessed each filter’s footprint, build quality, and refill experience, along with how well it fit under a faucet or on a countertop. They also compared overall performance and long-term filter costs to determine which models offered the best balance of design, function, and value.\n## What to Look for in a Countertop Water Filter System\n### Style\nCountertop water filters generally come in two styles: faucet diverters and freestanding units.\n\nFaucet diverters attach directly to your kitchen faucet using a small connector or hose. Once installed, you can easily switch between unfiltered and filtered water. Setup is usually simple and doesn’t require tools.\n\nFreestanding filters, on the other hand, don’t need a faucet connection. You just fill the top reservoir with tap water and let gravity—or in some cases, an electric pump—do the rest. The filtered water collects in a lower chamber or carafe, ready to pour. These tend to take up more counter space, but they’re perfect for renters or anyone who prefers a setup that doesn’t rely on plumbing.\n\nIf you drink a lot of water or live in a larger household, consider choosing a higher-capacity filter so you’re not constantly refilling throughout the day.\n\n### Purpose\nBefore you buy, think about what you want your water filter to accomplish. If you’re mainly after better-tasting water, a simple single-stage carbon filter will likely do the job by removing chlorine and unpleasant odors.\n\nIf your area has more serious water quality issues, or you just want the highest level of purification, a system with multiple filtration stages is a better choice. Check your city’s annual water quality report to see what’s in your tap water.[⁶](https:\/\/www.epa.gov\/DWdata) If you’re on well water, you can order a private test through a state-certified lab to identify potential contaminants.\n\nMore advanced countertop systems often use a combination of carbon absorption, ion exchange, and reverse osmosis. Together, these target everything from larger sediment particles to microscopic contaminants, giving you the cleanest water possible.\n\n### Filter Life\nEvery countertop water filter needs its filters replaced regularly to maintain performance. The lifespan depends on both the model and how much water you use, but most need replacement roughly every six months.\n\nSome filters last longer, (especially reverse osmosis membranes) while others may need changing sooner if your water has more sediment or minerals. Replacement costs also vary, so it’s a good idea to check pricing before committing to a system. Staying consistent with filter changes keeps your water tasting fresh and helps your filter last longer overall.\n\n### Certification\nThird-party certification is one of the best ways to know that a countertop water filter actually does what it claims. Look for official marks from NSF, ANSI, or the Water Quality Association (WQA). These organizations independently test filters to confirm that they meet safety and performance standards.\n\nBe cautious of vague wording. A filter that says it’s “tested to” or “meets” NSF\/ANSI standards isn’t necessarily certified. Only filters that have undergone full verification can display the NSF seal.[⁷](https:\/\/www.nsf.org\/about-nsf\/nsf-mark) Double-checking this detail before buying ensures you’re getting a filter that’s been properly evaluated and not just advertised as one.\n\n## FAQs\n### What is the best way to filter tap water?\nThe right filtration system depends on your home setup, water usage, and what you’re trying to remove.\n\nA countertop water filter is a great middle ground as it filters enough water for daily drinking and cooking without requiring plumbing. If you have the counter space, a faucet diverter system offers extra convenience since it connects directly to your sink, saving you from constant refills. If you prefer flexibility, freestanding filters are easy to move around and don’t need to attach to a faucet. Some even fit inside the fridge if you like your water chilled.\n\nBefore deciding, it’s ideal to look up your local water quality report (available through your city or county’s utility department) or order a private test. Knowing what’s in your tap water helps you choose a filter that tackles the right contaminants.\n\nIf a countertop option doesn’t fit your space or routine, consider an under-sink system, pitcher filter, or even a whole-house filter for broader coverage.\n\n### Do countertop water filters remove fluoride?\nSome countertop filters remove fluoride, but not all of them do. Fluoride reduction typically requires an extra filtration step, usually through a reverse osmosis membrane or activated alumina filter.\n\nAlways check product specs before buying, since fluoride removal isn’t standard in most carbon-based systems. If reducing fluoride is your priority, reverse osmosis filters remain the most effective choice, though even these can’t eliminate every trace.\n\n### Are there any water filters that can remove all contaminants?\n“Not all filters remove all contaminants,” says [Rick Andrew](https:\/\/wcponline.com\/category\/writer\/rick-andrew\/), formerly of NSF International’s Global Water Program. In other words, every filter works a little differently, so it’s important to first understand what’s actually in your water before deciding on a system. You can find this information in your local utility’s annual water quality report, which is available to all residents. If you have well water or think your plumbing could be contributing to contamination, a private lab can test your water in more detail.4\n\nWhile no home filter removes every possible contaminant, different types are made to tackle specific ones. Activated carbon filters are best for improving taste and reducing chlorine. Ion exchange filters target heavy metals like lead. Reverse osmosis systems remove a wide range of dissolved solids and chemicals, and UV filters are designed to neutralize bacteria and viruses.\n\nThe key is to choose a filter that addresses your specific water concerns and confirm it’s NSF-certified, which ensures that the performance claims have been independently verified. You can view [NSF's online listings here](https:\/\/info.nsf.org\/Certified\/DWTU\/) to see if a specific product is certified.\n\n### How often do you need to change countertop water filters?\nMost countertop filters last around six months, but that can vary depending on the brand, system type, and how much water you use. Some filters need replacing every few months, while others, especially those with multi-stage or reverse osmosis systems, can last up to a year or even longer.\n\nFor the best results, follow the manufacturer’s replacement schedule and pay attention to built-in indicators if your system has them. Changing filters on time keeps your water tasting fresh and prevents buildup that could affect performance.\n\n### Do water filters work for well water?\nYes, many countertop water filters work just as well with well water as they do with city water. The key is to choose one designed for your specific water quality.\n\nPrivate wells draw water directly from the ground and aren’t federally regulated like municipal systems. This means homeowners are responsible for regular testing and maintenance. For guidance, you can reach out to your state’s Department of Natural Resources or local health department.\n\nWell water quality can be affected by natural conditions (like soil composition) or nearby human activity such as farming or construction.5 To stay safe, have your well tested by a [state-certified lab](https:\/\/www.epa.gov\/dwlabcert\/contact-information-certification-programs-and-certified-laboratories-drinking-water) each year for common contaminants like bacteria, nitrates, pesticides, volatile organic compounds (VOCs), and dissolved solids.67\n\nFilters that use UV light, sediment filtration, or reverse osmosis can all help improve well water safety. Watch for changes in taste, odor, or color as these can be early signs that it’s time to retest or replace your filter.\n\n### How do you know if a water filter is counterfeit?\nUnfortunately, counterfeit filters are fairly common, especially online. According to Rick Andrew of NSF International, price is often the biggest red flag. If the cost seems too good to be true, it probably is. Other signs include packaging that looks overly glossy or cheaply made, certification marks that are tiny or hard to read, and filters that feel unusually light, which can mean they lack the proper filtration materials. When in doubt, buy replacements directly from the manufacturer or an authorized retailer to ensure you’re getting a genuine product.\n\n### What do you need to know about reverse osmosis filters?\n“Reverse osmosis filters remove a large number of contaminants but are generally more expensive,” explains [Sydney Evans](https:\/\/www.ewg.org\/), Science Analyst at the Environmental Working Group.\n\nMost reverse osmosis (RO) systems use a semi-permeable membrane combined with an activated carbon filter, which helps catch extra impurities and protect the delicate RO membrane. While this process produces exceptionally clean water, Evans says that these systems also tend to waste three to five times more water than they filter.\n\nEven so, reverse osmosis filters remain one of the best options for anyone wanting maximum purification, especially for reducing heavy metals, dissolved solids, and chemical pollutants.\n\n## Why Trust the Spruce Eats\nAs someone who has always been particular about the taste of her water, [Cheyenne Elwell](https:\/\/www.thespruceeats.com\/cheyenne-elwell-4685328), product tester and writer for The Spruce Eats, understands the importance of reliable filtration. After years of preferring bottled spring water, she began using a fridge filter to cut down on plastic waste but has since fallen in love with the pure taste of the Boroux. Cheyenne has personally tested several of the countertop water filters on this list (and some that didn’t make the cut), along with a variety of kitchen and coffee products. She also writes for Business Insider and runs Baked Brewed Beautiful, a site dedicated to coffee, brewing, and sustainable living.\n\n## Sources\n- [Rick Andrew](https:\/\/www.nsf.org\/experts\/rick-andrew) was the Director of Global Business Development of Water Systems at the [National Science Foundation](https:\/\/www.nsf.gov\/). He retired in 2023 after 30 years of experience in preserving and maintaining clean drinking water and is responsible for NSF’s global sales and structuring of water-related programs.\n- [Sydney Evans](https:\/\/www.ewg.org\/about-us\/staff) is a Senior Science Analyst for the Environmental Working Group.\n\nArticle Sources\n\nThe Spruce Eats uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Read our [editorial process](https:\/\/www.thespruceeats.com\/about-us-4776236#toc-editorial-guidelines) to learn more about how we fact-check and keep our content accurate, reliable, and trustworthy.\n\n1. Everett ET. [Fluoride's effects on the formation of teeth and bones, and the influence of genetics](https:\/\/www.ncbi.nlm.nih.gov\/pmc\/articles\/PMC3144112\/). *J Dent Res.* 2011;90(5):552-560. doi:10.1177\/0022034510384626\n2. Prabhakar AR, Raju OS, Kurthukoti AJ, Vishwas TD. [The effect of water purification systems on fluoride content of drinking water](https:\/\/pubmed.ncbi.nlm.nih.gov\/18408264\/). *J Indian Soc Pedod Prev Dent*. 2008;26(1):6-11. doi:10.4103\/0970-4388.40314\n3. Greenlee LF, Lawler DF, Freeman BD, Marrot B, Moulin P. [Reverse osmosis desalination: water sources, technology, and today's challenges](https:\/\/pubmed.ncbi.nlm.nih.gov\/19371922\/). *Water Res*. 2009;43(9):2317-2348. doi:10.1016\/j.watres.2009.03.010\n4. Centers for Disease Control and Prevention. [How to Read Drinking Water Quality Reports](https:\/\/www.cdc.gov\/drinking-water\/about\/how-to-read-drinking-water-quality-reports.html).\n5. American National Standards Institute. [Protecting Private Drinking Water Wells: A Brief Guide](https:\/\/blog.ansi.org\/protecting-private-drinking-water-wells-guide\/).\n6. The United States Environmental Protection Agency. [National Primary Drinking Water Regulations](https:\/\/nepis.epa.gov\/Exe\/ZyNET.exe\/P1005EJT.TXT?ZyActionD=ZyDocument&Client=EPA&Index=2006+Thru+2010&Docs=&Query=&Time=&EndTime=&SearchMethod=1&TocRestrict=n&Toc=&TocEntry=&QField=&QFieldYear=&QFieldMonth=&QFieldDay=&IntQFieldOp=0&ExtQFieldOp=0&XmlQuery=&File=D%3A%5Czyfiles%5CIndex%20Data%5C06thru10%5CTxt%5C00000011%5CP1005EJT.txt&User=ANONYMOUS&Password=anonymous&SortMethod=h%7C-&MaximumDocuments=1&FuzzyDegree=0&ImageQuality=r75g8\/r75g8\/x150y150g16\/i425&Display=hpfr&DefSeekPage=x&SearchBack=ZyActionL&Back=ZyActionS&BackDesc=Results%20page&MaximumPages=1&ZyEntry=1&SeekPage=x&ZyPURL).\n7. United States Environmental Protection Agency. 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Us](https:\/\/www.thespruceeats.com\/about-us-4776236)\n- [Advertise](https:\/\/www.people.inc\/advertising)\n- [Terms of Service](https:\/\/www.people.inc\/brands-termsofservice)\n- [Careers](https:\/\/www.people.inc\/careers)\n- [Editorial Guidelines](https:\/\/www.thespruceeats.com\/about-us-4776236#toc-editorial-guidelines)\n- [Privacy Policy](https:\/\/www.people.inc\/brands-privacy)\n- [Contact](https:\/\/www.thespruceeats.com\/about-us-4776236#toc-contact-us)\n- [Newsletters](https:\/\/www.thespruceeats.com\/newsletter-opt-in-footer-7095135)\n- [Sweepstakes](https:\/\/www.thespruceeats.com\/sweepstakes)\n\nThe Spruce Eats is part of the [People Inc.](https:\/\/www.people.inc\/) publishing family.\n\nMyrecipes Dialog","attrs_readable_markdown":"What We Like\n\n- Compact and sleek design\n- Easy setup\n- Fast, clean-tasting results\n- Tank-free, direct faucet connection\n\nWhat We Don’t Like\n\n- Not compatible with all faucets\n\nThe Brondell Countertop Water Filtration System is one of those rare finds that blends power with convenience. We found that this countertop water filter delivers crisp, odor-free water while taking up surprisingly little space on the counter. The Brondell Cypress has been independently tested and certified by the [Water Quality Association (WQA)](https:\/\/wqa.org\/grow\/product-certification\/) to meet NSF\/ANSI standards 42, 53, and 372, and it uses a patented three-stage Nanotrap filtration system with carbon block technology to capture a wide range of impurities, including bacteria, viruses, [VOCs](https:\/\/www.epa.gov\/indoor-air-quality-iaq\/what-are-volatile-organic-compounds-vocs), and other harmful chemicals.\n\nDuring testing, we were impressed by how easy it is to set up. For most standard faucets, installation only required attaching the provided adaptor and tightening it into place, which took around 10 minutes. For those with nonstandard faucets, there’s an optional under-counter connection available for purchase. When we tried that method, it took closer to 30 minutes to hook up to the main cold water line and install the T-valve. Once connected, the system dispensed fresh, clean water instantly with no waiting required. One thing to note: The Brondell Cypress may not be compatible with pull-down or pull-out faucets, so check your fixture style before purchasing.\n\nThe filter trio includes a composite plus filter, a Nanotrap filter, and a carbon block filter. The first and third stages need to be replaced every six months, while the Nanotrap filter lasts about a year. Even with this multi-layer system, the Brondell takes up minimal counter space at just 3.75 x 10.5 x 13.5 inches. Between its sleek design and standout performance, it’s a reliable pick for anyone who wants cleaner, better-tasting water without the installation headaches of a built-in system.\n\n**Filtration Type:** 3-stage carbon and Nanotrap filtration \\| **Contaminants Filtered:** Chlorine, heavy metals, lead, PFOA, PFOS, VOCs, and other impurities \\| **Retains Minerals:** Yes \\| **Certified By:** WQA Gold Seal to NSF\/ANSI 42, 53, 401, and 372 \\| **Dimensions:** 10.5 x 13.5 x 3.75 inches\n\n- ![water filter from side, on counter next to sink](https:\/\/www.thespruceeats.com\/thmb\/22SMQroXpePoe2u-wBQJYYyCifc=\/fit-in\/1500x2616\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-brondell-cypress-countertop-system-diana-weesner-18-313827fec2de443bad1a72276de1995f.jpeg)\n  Credit: The Spruce Eats\n- ![pressing button on top of water filter](https:\/\/www.thespruceeats.com\/thmb\/wDEN54Ma9XY42mZGIocvsIGtmfM=\/fit-in\/1500x2632\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-brondell-cypress-countertop-system-diana-weesner-12-c15d2c05a07741d599433d898699da76.jpeg)\n  Credit: The Spruce Eats\n- ![water filter box](https:\/\/www.thespruceeats.com\/thmb\/YVSjSWg3JZx8Rn03q16Zcu2QWVs=\/fit-in\/1500x2632\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-brondell-cypress-countertop-system-diana-weesner-21-c330ea13bc3a4881b3fa7e8f5b5a3892.jpeg)\n  Credit: The Spruce Eats\n\n- ![water filter from side, on counter next to sink](https:\/\/www.thespruceeats.com\/thmb\/-AjwSSJilQfZ-77ry6PgCYeqoPI=\/fit-in\/200x2616\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-brondell-cypress-countertop-system-diana-weesner-18-313827fec2de443bad1a72276de1995f.jpeg)\n- ![pressing button on top of water filter](https:\/\/www.thespruceeats.com\/thmb\/DNOGtJWNQCHTJxUMutwDJAniy2o=\/fit-in\/200x2632\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-brondell-cypress-countertop-system-diana-weesner-12-c15d2c05a07741d599433d898699da76.jpeg)\n- ![water filter box](https:\/\/www.thespruceeats.com\/thmb\/S7knYlnkUtFrWtUYhnIKG30Va20=\/fit-in\/200x2632\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-brondell-cypress-countertop-system-diana-weesner-21-c330ea13bc3a4881b3fa7e8f5b5a3892.jpeg)\n\nWhat We Like\n\n- Removes fluoride and other common contaminants\n- Smooth, refreshing water\n- Reverse osmosis system\n\nWhat We Don’t Like\n\n- Larger countertop footprint\n- Filters water slowly\n\nFor those focused on fluoride removal, the AlcaPure Countertop Reverse Osmosis Filter proved to be one of the strongest performers we tested. With growing concern that excessive fluoride may cause issues such as tooth discoloration and bone weakness, this model is designed to help address that by removing up to 95 percent of fluoride and as much as 99 percent of other contaminants.12\n\nSetup is simple since it’s a countertop model that doesn’t need plumbing: Just plug it in and pour water into the front drawer. During testing, we found it removed all traces of any chlorine odor as well as the faint metallic taste from our city tap water. The resulting water tasted light, crisp, and noticeably cleaner. We did notice that the water filtering process does take some patience. It takes roughly 15 minutes to produce a half-gallon of clean water, so you’ll likely find yourself refilling the unfiltered water drawer throughout the day.\n\nThe device’s reverse osmosis membrane and filters have been certified by the [International Association of Plumbing & Mechanical Officials](https:\/\/www.iapmo.org\/) (IAPMO) to NSF standards 42 and 58, but the unit itself is not fully NSF-certified according to the NSF database. The membrane should be replaced every two years, while the other three filters last about a year.3 A built-in LED display conveniently signals when it’s time for replacements, taking the guesswork out of maintenance.\n\nWhile the AlcaPure sits on the higher end of the price range and is a bit larger than some of the competition (9.5 x 14.5 x 16.25 inches), its impressive performance, polished design, and highly effective fluoride reduction make it well worth the investment.\n\n**Filtration Type:** Reverse osmosis \\| **Contaminants Filtered:** Chlorine, industrial chemicals, pesticides, herbicides, turbidity, VOCs, microorganisms \\| **Retains Minerals:** No \\| **Certified By:** IAPMO \\| **Dimensions:** 9\\.5 x 14.5 x 16.25 inches\n\n- ![alcapure countertop water filter on floor](https:\/\/www.thespruceeats.com\/thmb\/mt5Sqa2APuh2mLvFTD-80mRZn8s=\/fit-in\/1500x2667\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-rkin-alcapure-reverse-osmosis-countertop-jennifer-may-09-26b09fdc62154504a90da2a0e532e8f7.jpeg)\n  Credit: The Spruce Eats\n- ![countertop water filter on counter, plugged in with orange lights on](https:\/\/www.thespruceeats.com\/thmb\/ttEZy3PP94f_fuhgB5deAePpfkU=\/fit-in\/1500x2624\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-rkin-alcapure-reverse-osmosis-countertop-jennifer-may-01-ef4645f8ebcb47988b6167166ad51708.jpeg)\n  Credit: The Spruce Eats\n- ![countertop water filter water tank aerial view](https:\/\/www.thespruceeats.com\/thmb\/6r6NyuawNRfJKxQxMTZz068f6nQ=\/fit-in\/1500x2656\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-rkin-alcapure-reverse-osmosis-countertop-jennifer-may-26-cddb240f1c5f41fd9a75b2b492f50bd4.jpeg)\n  Credit: The Spruce Eats\n\n- ![alcapure countertop water filter on floor](https:\/\/www.thespruceeats.com\/thmb\/GXi4I8Y_tQ8SDjXnNkHIYnAOx54=\/fit-in\/200x2667\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-rkin-alcapure-reverse-osmosis-countertop-jennifer-may-09-26b09fdc62154504a90da2a0e532e8f7.jpeg)\n- ![countertop water filter on counter, plugged in with orange lights on](https:\/\/www.thespruceeats.com\/thmb\/MMpqx4xh_JChOi39jJrFQ-zk2y4=\/fit-in\/200x2624\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-rkin-alcapure-reverse-osmosis-countertop-jennifer-may-01-ef4645f8ebcb47988b6167166ad51708.jpeg)\n- ![countertop water filter water tank aerial view](https:\/\/www.thespruceeats.com\/thmb\/-TsPGnl33bRKHuuyRA4SRp9Nx3s=\/fit-in\/200x2656\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-rkin-alcapure-reverse-osmosis-countertop-jennifer-may-26-cddb240f1c5f41fd9a75b2b492f50bd4.jpeg)\n\nWhat We Like\n\n- Fast filtration time\n- Quiet-powered filtration\n- Keeps essential minerals\n\nWhat We Don’t Like\n\n- Needs an outlet nearby\n\nIf you’re looking for a fast, compact, and reliable countertop filter, the Aquasana Clean Water Machine hits all the right notes. This countertop water filter measures on the smaller side at just 9.7 x 8 x 11.6 inches, making it easy to find a countertop spot for it under a cabinet. You’ll also need to place it near an outlet since that’s part of the magic. This filter uses powered filtration rather than gravity. That design allows you to access filtered water much faster than with most systems. In testing, we found that it only took 15 seconds to filter 16 ounces of water. We did notice a small issue when filling a gallon container, as the dispenser sits only a few inches from the filter housing, leaving limited clearance and some minor splashing.\n\nThe filter is easy to operate by simply pressing the rapid-release button to start and tapping it again to stop. We were impressed that this single activated carbon filter cleared up the cloudy appearance of our tap water and removed both metallic and chlorine odors and aftertaste. To boot, this model doesn’t remove beneficial minerals such as calcium, magnesium, and potassium. Tested and certified by the WQA, this filter meets NSF standards 42, 53, and 401.\n\nSetup took us about 10 minutes, including flushing the system as the company recommends when replacing the filter. Each filter lasts around six months, and a built-in indicator light lets you know when it’s time for a replacement. The filters are conveniently sold in two-packs for a full year of clean water.\n\n**Filtration Type:** Carbon filtration, ion exchange, and sub-micron mechanical filtration \\| **Contaminants Filtered:** Removes 78 contaminants, including chlorine, chloramine, lead, VOCs, asbestos, turbidity, mercury, cysts, PFOA\/PFOS, herbicides, pesticides, pharmaceuticals, and microplastics \\| **Retains Minerals:** Yes \\| **Certified By:** WQA \\| **Dimensions:** 9\\.7 x 8 x 11.6 inches\n\n- ![aquasana water filter aerial view](https:\/\/www.thespruceeats.com\/thmb\/HQrOoleYTY2fSVIPfv-4Bq3j5qk=\/fit-in\/1500x2662\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-aquasana-clean-machine-michael-navarro-15-8e466d6f20594584a529f423ba97e952.jpeg)\n  Credit: The Spruce Eats\n- ![aquasana water filter from side, showing mug filled with water](https:\/\/www.thespruceeats.com\/thmb\/IPY4EsooIiuRj0VdQIbMyJKo80M=\/fit-in\/1500x2632\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-aquasana-clean-machine-michael-navarro-14-2aac3d2b9d5444acb924b3aafdea8770.jpeg)\n  Credit: The Spruce Eats\n- ![aquasana water filter water reservoir](https:\/\/www.thespruceeats.com\/thmb\/o7aUFvHugw3Ad9ZeLzaM3_zTLIg=\/fit-in\/1500x2624\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-aquasana-clean-machine-michael-navarro-16-6e2915e88242485894110c536369569a.jpeg)\n  Credit: The Spruce Eats\n\n- ![aquasana water filter aerial view](https:\/\/www.thespruceeats.com\/thmb\/vZn1StG1q5ZprrmTfnLB9d3wyWc=\/fit-in\/200x2662\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-aquasana-clean-machine-michael-navarro-15-8e466d6f20594584a529f423ba97e952.jpeg)\n- ![aquasana water filter from side, showing mug filled with water](https:\/\/www.thespruceeats.com\/thmb\/pw71dGMNYywX_bkBJ3hmRdLP-10=\/fit-in\/200x2632\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-aquasana-clean-machine-michael-navarro-14-2aac3d2b9d5444acb924b3aafdea8770.jpeg)\n- ![aquasana water filter water reservoir](https:\/\/www.thespruceeats.com\/thmb\/53kKGrtg0k4qnyXKf4OEbRIhNHM=\/fit-in\/200x2624\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-aquasana-clean-machine-michael-navarro-16-6e2915e88242485894110c536369569a.jpeg)\n\nWhat We Like\n\n- Two-gallon capacity\n- Long-lasting filters\n- Sleek, durable stainless steel design\n- No power or plumbing required\n\nWhat We Don’t Like\n\n- Large size needs dedicated counter space\n\nThe Big Berkey Water Filter offers a high-capacity system that holds more than two gallons of water, making it ideal for households of two to four. While it does take up a fair amount of vertical height (21 inches high), the trade-off is fewer refills and consistently great-tasting water.\n\nThis model uses a pair of Black Berkey filter elements, each rated to purify up to 6,000 gallons of water. How long that lasts depends on daily use. A family filtering about two gallons per day could see the filters last as long as eight years, though heavier use will shorten their lifespan. When the flow rate slows or you hit capacity, the filters can be cleaned or replaced. You can also install additional filters to increase the flow rate or double the filtration capacity. For those who need added purification, a separate pair of fluoride and arsenic filters is available. The system doesn’t require electricity or a faucet connection, though it does benefit from regular monitoring for best performance. The filters were tested and certified by Los Angeles County and independent labs to NSF standards 53 and 42.\n\nIn testing, we found that the Big Berkey removed the metallic smell and taste from our tap water, replacing it with a clean, mineral-like finish that felt smooth and refreshing. The stainless steel build gives it a polished, modern look that feels like a more elevated version of a standard water cooler. Because it’s gravity-fed, filtration takes about one hour per gallon. Water is dispensed by pressing the lever at the base, which releases a steady stream from the spigot. We found it most convenient to keep the system near the sink for easy refills.\n\nPlease note that Big Berkey does not warranty products purchased through Amazon. The [company states](https:\/\/berkeyfilterwater.com\/contact\/https-berkeyfilterwater-com-contact-shipping-returns\/): “We routinely receive requests for assistance\/support from Amazon purchases, and most times are unfortunately unable to provide service support. As a result, and due to the inability of Amazon to assist in policing and removing fraudulent\/imitation Berkey products, we do not recommend purchasing through Amazon.”\n\n**Filtration Type:** Carbon filtration and ion exchange with optional post-filtration fluoride filters \\| **Contaminants Filtered:** Heavy metals, VOCs, nitrates, radon 222, trihalomethanes, chromium, herbicides, pesticides, organic solvents, others \\| **Retains Minerals:** Yes \\| **Certified By:** Los Angeles County and independent labs \\| **Dimensions:** 21 x 8.5 x 8.5 inches\n\n- ![big berkey water filter on counter next to lots of citrus fruits, apples, avocados, and bananas](https:\/\/www.thespruceeats.com\/thmb\/aLj4wpWcp9_mqHyB5Tq_U9eyRKM=\/fit-in\/1500x2667\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-big-berkey-kim-souza-21-bbdc10a9f63f4b1686137d1dd2f05d5d.jpeg)\n  Credit: The Spruce Eats\n- ![sink filling big berkey water filter](https:\/\/www.thespruceeats.com\/thmb\/XuLiP5m28TyqF28zoyz5luJ6cyA=\/fit-in\/1500x2665\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-big-berkey-kim-souza-01-62619ebe74a8402fa61f258b9b1a5593.jpeg)\n  Credit: The Spruce Eats\n- ![all parts of big berkey water filter before putting together](https:\/\/www.thespruceeats.com\/thmb\/4pBVG9lob5ccL5iEaHLgz28b4Og=\/fit-in\/1500x2624\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-big-berkey-kim-souza-33-48823dbdbd5c4df59207dfd210b1dcea.jpeg)\n  Credit: The Spruce Eats\n\n- ![big berkey water filter on counter next to lots of citrus fruits, apples, avocados, and bananas](https:\/\/www.thespruceeats.com\/thmb\/QWVPgZJtyVIxtobwP0m0bF4lSaY=\/fit-in\/200x2667\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-big-berkey-kim-souza-21-bbdc10a9f63f4b1686137d1dd2f05d5d.jpeg)\n- ![sink filling big berkey water filter](https:\/\/www.thespruceeats.com\/thmb\/S_-nR_MAv5Gva3w6Cu-O86FBRQI=\/fit-in\/200x2665\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-big-berkey-kim-souza-01-62619ebe74a8402fa61f258b9b1a5593.jpeg)\n- ![all parts of big berkey water filter before putting together](https:\/\/www.thespruceeats.com\/thmb\/6HHmHBAFK6qlZwNX26cnRNBw7CA=\/fit-in\/200x2624\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-big-berkey-kim-souza-33-48823dbdbd5c4df59207dfd210b1dcea.jpeg)\n\nWhat We Like\n\n- Removes over 80 contaminants\n- Produces exceptionally pure water\n- Easy-to-read digital display\n\nWhat We Don’t Like\n\n- Must hold button to pour\n\nReverse osmosis works by pushing water through a semipermeable membrane that captures some of the smallest contaminants, even those on a molecular level. This process removes substances like salt, dirt, and other particulates that most standard filters cannot touch, producing an exceptionally pure taste and clear water. The AquaTru Countertop Reverse Osmosis Filter uses a four-stage filtration system, including a reverse osmosis membrane, to transform tap water into clean, great-tasting drinking water. To use, simply fill the one-gallon tank, and the system converts it into about three quarts of filtered water.\n\nDuring testing, we found that it completely transformed our cloudy, funky-tasting tap water into crystal-clear, odor-free water with no perceptible aftertaste. Setup required a few components, but the helpful instructional videos made the process easy to follow. To dispense water, press and hold the button, then release when your glass is full. We did notice slight dripping after releasing the button and found it mildly inconvenient to have to hold it down, but its sleek, modern design more than made up for that small drawback. It is also reasonably compact but does require an outlet for operation.\n\nThe AquaTru includes a digital display that shows when it is time to replace the filters. The reverse osmosis filter lasts around two years, while the pre\/carbon filter lasts six months and the carbon VOC filter lasts up to one year. Replacements are sold as a three-piece set. This system has been tested and certified by the IAPMO to meet NSF standards 42, 53, 58, 401, and P473, and the filters remove 83 contaminants, including lead, arsenic, fluoride, chlorine, and nitrates.\n\n**Filtration Type:** 4-stage reverse osmosis \\| **Contaminants Filtered:** Removes 83 contaminants, including lead, arsenic, PFAs, fluoride, chlorine, and nitrates \\| **Retains Minerals:** No \\| **Certified By:** Tested and certified by IAPMO to meet NSF\/ANSI standards 41, 53, 58, 401 \\| **Dimensions:** 14 x 14 x 12 inches\n\n- ![digital interface for aquatru water filter](https:\/\/www.thespruceeats.com\/thmb\/jC6iTZHRkL70O3J0wJK1UG0Yu_Y=\/fit-in\/1500x2016\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-aquatru-countertop-filtration-purification-system-tracy-allison-29-cf555c97734044029fbb6bfbc3841325.jpeg)\n  Credit: The Spruce Eats\n- ![filling tank of aquatru water filter with sink faucet](https:\/\/www.thespruceeats.com\/thmb\/0z1ZItxxYJ9LqfVcAT96oBIVUaw=\/fit-in\/1500x1944\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-aquatru-countertop-filtration-purification-system-tracy-allison-21-1e8df6e2dc894fc481d05dff5d00e2f2.jpeg)\n  Credit: The Spruce Eats\n- ![water tank of aquatru water filter](https:\/\/www.thespruceeats.com\/thmb\/XNESYCAX8k-jfRFy6DzBSJCZ3EI=\/fit-in\/1500x2640\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-aquatru-countertop-filtration-purification-system-tracy-allison-62-6417086652f94e4eb3edee0771a75b2a.jpeg)\n  Credit: The Spruce Eats\n- ![aquatru water filter](https:\/\/www.thespruceeats.com\/thmb\/Tomb68uVxKkR58QSuqEatu5XGcE=\/fit-in\/1500x2016\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-aquatru-countertop-filtration-purification-system-tracy-allison-04-cb7985f6ded04175b871fecebfc2dd9c.jpeg)\n  Credit: The Spruce Eats\n\n- ![digital interface for aquatru water filter](https:\/\/www.thespruceeats.com\/thmb\/QTJy9iNgaqCrFagUIAfOEh3pXlk=\/fit-in\/200x2016\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-aquatru-countertop-filtration-purification-system-tracy-allison-29-cf555c97734044029fbb6bfbc3841325.jpeg)\n- ![filling tank of aquatru water filter with sink faucet](https:\/\/www.thespruceeats.com\/thmb\/q-H6yRgq_vKB5k_f82xj5Ljna1c=\/fit-in\/200x1944\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-aquatru-countertop-filtration-purification-system-tracy-allison-21-1e8df6e2dc894fc481d05dff5d00e2f2.jpeg)\n- ![water tank of aquatru water filter](https:\/\/www.thespruceeats.com\/thmb\/Y1x1vh83r9GAVbqg5_GgPqRp8t0=\/fit-in\/200x2640\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-aquatru-countertop-filtration-purification-system-tracy-allison-62-6417086652f94e4eb3edee0771a75b2a.jpeg)\n- ![aquatru water filter](https:\/\/www.thespruceeats.com\/thmb\/fK_BphJ-LzeKanTxXuNKUF45dxM=\/fit-in\/200x2016\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-aquatru-countertop-filtration-purification-system-tracy-allison-04-cb7985f6ded04175b871fecebfc2dd9c.jpeg)\n\nContinue to 5 of 9 below.\n\nWhat We Like\n\n- Elegant glass carafe design\n- Fast filtration time\n- Adds back essential minerals\n\nWhat We Don’t Like\n\n- Not fully NSF-certified\n\nThe Bluevua Reverse Osmosis Countertop Water Filter combines the simplicity of a water filter pitcher with the power of a multi-stage filtration system. Designed much like a drip coffee maker, it automatically fills its glass carafe with purified water once the filtration process finishes. The carafe is made of durable borosilicate glass, holds up to seven cups, and features easy-to-read measurement markings.\n\nThe setup for this water filter is simpler than most. Just plug it in, flush the system a few times before first use as the manufacturer recommends, and press the button to start filtering. In testing, we found that it was impressively fast, producing a full pitcher of clean water in less than five minutes. This system uses a four-stage filtration process that includes a reverse osmosis membrane.\n\nWe found that it produced clean, crisp-tasting water compared to the cloudy tap water poured into the unfiltered side. We also appreciated the optional mineral insert, which restores essential minerals and gives the water a refreshing mineral-water flavor.\n\nThe stage one, two, and four filters need replacing about once a year, while the stage three filter lasts up to two years. A digital display shows the water quality, pitcher level, and filter life, conveniently alerting you when it’s time to replace each one. SGS has certified these filters to NSF standards 42, 53, and 401, though the system itself is not fully NSF-certified according to the NSF database.\n\n**Filtration Type:** 4-stage reverse osmosis \\| **Contaminants Filtered:** Chlorides, lead, chlorine, fluoride, heavy metals, mercury, radium, chromium, arsenic, chloramine \\| **Retains Minerals:** No \\| **Certified By:** SGS \\| **Dimensions:** 15 x 10.9 x 14.3 inches\n\n- ![bluevua water filter with some packaging still on](https:\/\/www.thespruceeats.com\/thmb\/C0T-xYtEp7GgTIJQpBIFNQfbhRw=\/fit-in\/1500x2666\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-bluevua-ro100ropot-reverse-osmosis-system-countertop-megan-wood-13-61c9ef4b046847888f2a97e0433d8864.jpeg)\n  Credit: The Spruce Eats\n- ![digital screen on water filter](https:\/\/www.thespruceeats.com\/thmb\/MmgOcITx9YAKg-QwYccdv1EbcJc=\/fit-in\/1500x2618\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-bluevua-ro100ropot-reverse-osmosis-system-countertop-megan-wood-16-02b364f8fb6741788bb3024d6bdace2f.jpeg)\n  Credit: The Spruce Eats\n- ![filter system on countertop water filter](https:\/\/www.thespruceeats.com\/thmb\/zE1wbtGxFRwPipU2YsTLqHndOLQ=\/fit-in\/1500x2666\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-bluevua-ro100ropot-reverse-osmosis-system-countertop-megan-wood-04-abc6d7ba3880405493206edb2918ae90.jpeg)\n  Credit: The Spruce Eats\n\n- ![bluevua water filter with some packaging still on](https:\/\/www.thespruceeats.com\/thmb\/J-FDbA1cU0cgQTXWVA-5bbhaLso=\/fit-in\/200x2666\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-bluevua-ro100ropot-reverse-osmosis-system-countertop-megan-wood-13-61c9ef4b046847888f2a97e0433d8864.jpeg)\n- ![digital screen on water filter](https:\/\/www.thespruceeats.com\/thmb\/24uxPQoOZ3leVMSq5PUFqAKfsjQ=\/fit-in\/200x2618\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-bluevua-ro100ropot-reverse-osmosis-system-countertop-megan-wood-16-02b364f8fb6741788bb3024d6bdace2f.jpeg)\n- ![filter system on countertop water filter](https:\/\/www.thespruceeats.com\/thmb\/2UwsGVzVdN9gzU7E4CIyKu1wChg=\/fit-in\/200x2666\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-bluevua-ro100ropot-reverse-osmosis-system-countertop-megan-wood-04-abc6d7ba3880405493206edb2918ae90.jpeg)\n\nWhat We Like\n\n- Fast filtration time\n- Compact and modern aesthetic\n- Easy to use\n\nWhat We Don’t Like\n\n- Loud while running\n\nBest known for its classic water filter pitchers, Brita brings the same trusted simplicity to its countertop model. We found that setup was just as easy as it is with its pitchers, with clear instructions right on the machine itself. Simply plug it in, run a few water cycles, and it’s ready to go. In testing, we found that it produced clean, smooth, and refreshing water that tasted noticeably fresher than our tap water.\n\nOne standout feature of this model is its speed. It filtered water within seconds, going from the unfiltered tank to our glass almost instantly once we pressed the button. Because the stream dispenses quickly, we recommend using a taller glass to avoid splashing.\n\nWe also liked the sleek, space-saving design, which fits comfortably in smaller kitchens. The filter operates on the louder side while running, but it’s quiet when idle. It only filters room-temperature water, though we found that refrigerating the unfiltered tank before use provides a simple workaround as long as you remember to secure the opening at the bottom first.\n\nThe Brita Hub includes a digital display that lights up when it’s time to replace the filter, which typically lasts around six months. The system is tested and certified by the WQA to NSF standards 42 and 401 and by the IAPMO to NSF standard 53.\n\n**Filtration Type:** Pressurized carbon block filtration \\| **Contaminants Filtered:** 70+ contaminants, including chlorine, chloramine, lead, mercury, PFOA\/PFOS, and microplastics \\| **Retains Minerals:** Yes \\| **Certified By:** WQA to NSF\/ANSI 42 and 401; IAPMO to NSF\/ANSI 53 \\| **Dimensions:** 14.4 x 7.5 x 11.4 inches\n\n- ![brita water filter on counter](https:\/\/www.thespruceeats.com\/thmb\/tKaThstXSRkjBoJRkoLKpaiuU7o=\/fit-in\/1500x2616\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-brita-hub-instant-powerful-countertop-filtration-elena-garcia-16-cf925d0b3141418b91cc57eb31ee429e.jpeg)\n  Credit: The Spruce Eats\n- ![pressing button to dispense water on brita filter](https:\/\/www.thespruceeats.com\/thmb\/nzKBVol4IvMcxMcTXlyu9KDMOVo=\/fit-in\/1500x2632\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-brita-hub-instant-powerful-countertop-filtration-elena-garcia-10-f1e928ce618a439586a2135ab1fbfbde.jpeg)\n  Credit: The Spruce Eats\n- ![holding handle of water reservoir for brita countertop water filter](https:\/\/www.thespruceeats.com\/thmb\/jVLu57ZHYvmwEegofrx5EipoVrI=\/fit-in\/1500x2667\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-brita-hub-instant-powerful-countertop-filtration-elena-garcia-18-7c951892626641e086bdd6b8b7a73c5b.jpeg)\n  Credit: The Spruce Eats\n\n- ![brita water filter on counter](https:\/\/www.thespruceeats.com\/thmb\/ydsmaE8oPnL9SLHu4FwmO63cjTU=\/fit-in\/200x2616\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-brita-hub-instant-powerful-countertop-filtration-elena-garcia-16-cf925d0b3141418b91cc57eb31ee429e.jpeg)\n- ![pressing button to dispense water on brita filter](https:\/\/www.thespruceeats.com\/thmb\/cLm1-0ByQzEkdANAUYsYlprFom8=\/fit-in\/200x2632\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-brita-hub-instant-powerful-countertop-filtration-elena-garcia-10-f1e928ce618a439586a2135ab1fbfbde.jpeg)\n- ![holding handle of water reservoir for brita countertop water filter](https:\/\/www.thespruceeats.com\/thmb\/FGssm5aCUPP77QkPco7UiTDblKY=\/fit-in\/200x2667\/filters:no_upscale\$\$:max_bytes\$150000\$:strip_icc\$\$\/ses-water-filters-test-brita-hub-instant-powerful-countertop-filtration-elena-garcia-18-7c951892626641e086bdd6b8b7a73c5b.jpeg)\n\nWhat We Like\n\n- Sleek stainless steel design\n- Noticeably light and clean-tasting water\n- Multiple matte color options\n\nWhat We Don’t Like\n\n- Complex setup and priming\n\nThe Boroux Legacy Compact Water Filter System blends timeless style with powerful gravity-fed filtration. Similar in concept to the Big Berkey, this system features upper and lower stainless steel chambers and comes in classic silver, matte black, or matte white finishes. During testing, we found the matte stainless look exceptionally sleek, as it fit seamlessly into our kitchen and looked more like decor than a countertop appliance.\n\nThe system operates with two Foundation filters, with the option to add fluoride filters for extra purification. Simply pour water into the upper chamber and let gravity do the work, slowly filtering it into the lower reservoir, which dispenses through a stainless steel spigot. We appreciated the water-level spigot, which made it easy to tell when to refill.\n\nOne downside we encountered with this system was the setup. Between reading instructions, watching online tutorials, and priming the filters, it took us nearly two hours to get it up and running. But in the end, we found that the results were worth it. The water tasted smooth and light, with a clean, refreshing finish. The system holds 1.8 gallons and performs best when kept near the sink for easy refills.\n\nFilters should be replaced about every 12 months, depending on usage. The Boroux Legacy Compact is WQA-certified to NSF\/ANSI\/CAN 372 for lead-free compliance and has been independently tested by third-party labs for additional performance claims.\n\n**Filtration Type:** Gravity-fed dual Foundation filters (optional fluoride add-ons) \\| **Contaminants Filtered:** Third-party tested for 70+ contaminants, including chlorine, chloramine, lead, mercury, and PFAS (PFOA\/PFOS) \\| **Retains Minerals:** Yes \\| **Certified By:** WQA to NSF\/ANSI\/CAN 372 (lead-free); additional performance independently tested \\| **Dimensions:** 17.5 x 8 x 8 inches\n\nWhat We Like\n\n- Fits easily on small countertops\n- Stylish color options\n- Refreshing, clean taste\n\nWhat We Don’t Like\n\n- Spigot placement limits positioning\n\nThe LifeStraw Home Studio Water Filter Dispenser proves that small can still be mighty. Compact enough for most countertops, this model offers clean, great-tasting water in a sleek, modern design available in colors like orchid pink, jade green, and soft neutrals too.\n\nSetup is refreshingly simple: rinse the carbon filter, twist it into place, and run a few rinse cycles. The 10-cup dispenser filters a full batch of water in about 10 to 15 minutes, combining a membrane microfilter that lasts roughly one year (264 gallons) with an activated carbon and ion exchange filter that should be replaced every two months (40 gallons). Both filter types are sold separately and install easily with a twist. Overall, we were highly impressed by the fresh, crisp taste of the filtered water, especially given the unit’s minimalist design and easy setup.\n\nIn testing, we found that the spigot placement at the base made positioning a little tricky. It needs to hang slightly off the edge of the counter or sink to dispense water. However, at just over 10 inches tall and 6.7 inches wide, it can also fit inside a refrigerator if you prefer chilled, filtered water. We also found that filling the upper reservoir about three-quarters full, or roughly seven to eight cups, allowed for the smoothest flow and prevented water from lingering in the top chamber.\n\nThis dispenser is independently tested to meet NSF\/ANSI standards 42 and 53 and is proven to remove bacteria, parasites, microplastics, chlorine, organic chemical matter, and heavy metals like lead, all while retaining healthy minerals.\n\n**Filtration Type:** Membrane microfilter + activated carbon + ion exchange\\| **Contaminants Filtered:** Bacteria, parasites, microplastics, chlorine, organic chemical matter, and heavy metals including lead \\| **Retains Minerals:** Yes \\| **Certified By:** Independently tested to meet NSF\/ANSI 42, 53, 401, P473 (PFAS) \\| **Dimensions:** 10.4 x 6.7 x 8.5 inches\n\n## Final Verdict\nOverall, we were most impressed by the [Brondell Cypress Three-Stage Countertop Water Filtration System](https:\/\/www.amazon.com\/Brondell-Cypress-Countertop-Filter-Certified\/dp\/B00EEDJSES\/?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851) for its quick setup and clean, odor-free taste. For fluoride removal, the [AlcaPure Countertop Reverse Osmosis Filter](https:\/\/www.amazon.com\/dp\/B0076CQXAQ?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851) is our top choice for its powerful and efficient filtration system.\n\n## How We Tested Countertop Water Filters\nWe spent more than 1,395 hours testing 11 of the most popular countertop water filters using tap water from New York, San Francisco, Seattle, and several cities in the Midwest and South. Each model was rated on taste, filtration speed, ease of use, design, and overall value to see how it performed in everyday use.\n\nPlease note that this test focused on aesthetic performance, including taste, smell, and usability, and did not evaluate contaminant removal such as lead, pharmaceuticals, or pesticides. All products included on this list are NSF-certified or certified by a third party to NSF standards. For details, see individual product certifications or verify listings directly with NSF.\n\n- **Taste and Smell:** To start, we sampled unfiltered tap water and compared it to the filtered version from each unit. Our testers noted how effectively the systems removed metallic, sulfur, and chlorine flavors and whether the final result tasted clean, light, and refreshing enough to drink all day.\n- **Ease of Use:** We tracked how long it took each filter to process a full batch, how often refills were needed, and how intuitive the installation and operation felt. Filters that were quick to set up, simple to refill, and easy to maintain scored highest for daily convenience.\n- **Design & Value:** Our testers assessed each filter’s footprint, build quality, and refill experience, along with how well it fit under a faucet or on a countertop. They also compared overall performance and long-term filter costs to determine which models offered the best balance of design, function, and value.\n## What to Look for in a Countertop Water Filter System\n### Style\nCountertop water filters generally come in two styles: faucet diverters and freestanding units.\n\nFaucet diverters attach directly to your kitchen faucet using a small connector or hose. Once installed, you can easily switch between unfiltered and filtered water. Setup is usually simple and doesn’t require tools.\n\nFreestanding filters, on the other hand, don’t need a faucet connection. You just fill the top reservoir with tap water and let gravity—or in some cases, an electric pump—do the rest. The filtered water collects in a lower chamber or carafe, ready to pour. These tend to take up more counter space, but they’re perfect for renters or anyone who prefers a setup that doesn’t rely on plumbing.\n\nIf you drink a lot of water or live in a larger household, consider choosing a higher-capacity filter so you’re not constantly refilling throughout the day.\n\n### Purpose\nBefore you buy, think about what you want your water filter to accomplish. If you’re mainly after better-tasting water, a simple single-stage carbon filter will likely do the job by removing chlorine and unpleasant odors.\n\nIf your area has more serious water quality issues, or you just want the highest level of purification, a system with multiple filtration stages is a better choice. Check your city’s annual water quality report to see what’s in your tap water.[⁶](https:\/\/www.epa.gov\/DWdata) If you’re on well water, you can order a private test through a state-certified lab to identify potential contaminants.\n\nMore advanced countertop systems often use a combination of carbon absorption, ion exchange, and reverse osmosis. Together, these target everything from larger sediment particles to microscopic contaminants, giving you the cleanest water possible.\n\n### Filter Life\nEvery countertop water filter needs its filters replaced regularly to maintain performance. The lifespan depends on both the model and how much water you use, but most need replacement roughly every six months.\n\nSome filters last longer, (especially reverse osmosis membranes) while others may need changing sooner if your water has more sediment or minerals. Replacement costs also vary, so it’s a good idea to check pricing before committing to a system. Staying consistent with filter changes keeps your water tasting fresh and helps your filter last longer overall.\n\n### Certification\nThird-party certification is one of the best ways to know that a countertop water filter actually does what it claims. Look for official marks from NSF, ANSI, or the Water Quality Association (WQA). These organizations independently test filters to confirm that they meet safety and performance standards.\n\nBe cautious of vague wording. A filter that says it’s “tested to” or “meets” NSF\/ANSI standards isn’t necessarily certified. Only filters that have undergone full verification can display the NSF seal.[⁷](https:\/\/www.nsf.org\/about-nsf\/nsf-mark) Double-checking this detail before buying ensures you’re getting a filter that’s been properly evaluated and not just advertised as one.\n\n## FAQs\n### What is the best way to filter tap water?\nThe right filtration system depends on your home setup, water usage, and what you’re trying to remove.\n\nA countertop water filter is a great middle ground as it filters enough water for daily drinking and cooking without requiring plumbing. If you have the counter space, a faucet diverter system offers extra convenience since it connects directly to your sink, saving you from constant refills. If you prefer flexibility, freestanding filters are easy to move around and don’t need to attach to a faucet. Some even fit inside the fridge if you like your water chilled.\n\nBefore deciding, it’s ideal to look up your local water quality report (available through your city or county’s utility department) or order a private test. Knowing what’s in your tap water helps you choose a filter that tackles the right contaminants.\n\nIf a countertop option doesn’t fit your space or routine, consider an under-sink system, pitcher filter, or even a whole-house filter for broader coverage.\n\n### Do countertop water filters remove fluoride?\nSome countertop filters remove fluoride, but not all of them do. Fluoride reduction typically requires an extra filtration step, usually through a reverse osmosis membrane or activated alumina filter.\n\nAlways check product specs before buying, since fluoride removal isn’t standard in most carbon-based systems. If reducing fluoride is your priority, reverse osmosis filters remain the most effective choice, though even these can’t eliminate every trace.\n\n### Are there any water filters that can remove all contaminants?\n“Not all filters remove all contaminants,” says [Rick Andrew](https:\/\/wcponline.com\/category\/writer\/rick-andrew\/), formerly of NSF International’s Global Water Program. In other words, every filter works a little differently, so it’s important to first understand what’s actually in your water before deciding on a system. You can find this information in your local utility’s annual water quality report, which is available to all residents. If you have well water or think your plumbing could be contributing to contamination, a private lab can test your water in more detail.4\n\nWhile no home filter removes every possible contaminant, different types are made to tackle specific ones. Activated carbon filters are best for improving taste and reducing chlorine. Ion exchange filters target heavy metals like lead. Reverse osmosis systems remove a wide range of dissolved solids and chemicals, and UV filters are designed to neutralize bacteria and viruses.\n\nThe key is to choose a filter that addresses your specific water concerns and confirm it’s NSF-certified, which ensures that the performance claims have been independently verified. You can view [NSF's online listings here](https:\/\/info.nsf.org\/Certified\/DWTU\/) to see if a specific product is certified.\n\n### How often do you need to change countertop water filters?\nMost countertop filters last around six months, but that can vary depending on the brand, system type, and how much water you use. Some filters need replacing every few months, while others, especially those with multi-stage or reverse osmosis systems, can last up to a year or even longer.\n\nFor the best results, follow the manufacturer’s replacement schedule and pay attention to built-in indicators if your system has them. Changing filters on time keeps your water tasting fresh and prevents buildup that could affect performance.\n\n### Do water filters work for well water?\nYes, many countertop water filters work just as well with well water as they do with city water. The key is to choose one designed for your specific water quality.\n\nPrivate wells draw water directly from the ground and aren’t federally regulated like municipal systems. This means homeowners are responsible for regular testing and maintenance. For guidance, you can reach out to your state’s Department of Natural Resources or local health department.\n\nWell water quality can be affected by natural conditions (like soil composition) or nearby human activity such as farming or construction.5 To stay safe, have your well tested by a [state-certified lab](https:\/\/www.epa.gov\/dwlabcert\/contact-information-certification-programs-and-certified-laboratories-drinking-water) each year for common contaminants like bacteria, nitrates, pesticides, volatile organic compounds (VOCs), and dissolved solids.67\n\nFilters that use UV light, sediment filtration, or reverse osmosis can all help improve well water safety. Watch for changes in taste, odor, or color as these can be early signs that it’s time to retest or replace your filter.\n\n### How do you know if a water filter is counterfeit?\nUnfortunately, counterfeit filters are fairly common, especially online. According to Rick Andrew of NSF International, price is often the biggest red flag. If the cost seems too good to be true, it probably is. Other signs include packaging that looks overly glossy or cheaply made, certification marks that are tiny or hard to read, and filters that feel unusually light, which can mean they lack the proper filtration materials. When in doubt, buy replacements directly from the manufacturer or an authorized retailer to ensure you’re getting a genuine product.\n\n### What do you need to know about reverse osmosis filters?\n“Reverse osmosis filters remove a large number of contaminants but are generally more expensive,” explains [Sydney Evans](https:\/\/www.ewg.org\/), Science Analyst at the Environmental Working Group.\n\nMost reverse osmosis (RO) systems use a semi-permeable membrane combined with an activated carbon filter, which helps catch extra impurities and protect the delicate RO membrane. While this process produces exceptionally clean water, Evans says that these systems also tend to waste three to five times more water than they filter.\n\nEven so, reverse osmosis filters remain one of the best options for anyone wanting maximum purification, especially for reducing heavy metals, dissolved solids, and chemical pollutants.\n\n## Why Trust the Spruce Eats\nAs someone who has always been particular about the taste of her water, [Cheyenne Elwell](https:\/\/www.thespruceeats.com\/cheyenne-elwell-4685328), product tester and writer for The Spruce Eats, understands the importance of reliable filtration. After years of preferring bottled spring water, she began using a fridge filter to cut down on plastic waste but has since fallen in love with the pure taste of the Boroux. Cheyenne has personally tested several of the countertop water filters on this list (and some that didn’t make the cut), along with a variety of kitchen and coffee products. She also writes for Business Insider and runs Baked Brewed Beautiful, a site dedicated to coffee, brewing, and sustainable living.\n\n## Sources\n- [Rick Andrew](https:\/\/www.nsf.org\/experts\/rick-andrew) was the Director of Global Business Development of Water Systems at the [National Science Foundation](https:\/\/www.nsf.gov\/). He retired in 2023 after 30 years of experience in preserving and maintaining clean drinking water and is responsible for NSF’s global sales and structuring of water-related programs.\n- [Sydney Evans](https:\/\/www.ewg.org\/about-us\/staff) is a Senior Science Analyst for the Environmental Working Group.","meta_canonical":null}

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Boilerpipe Text	What We Like Compact and sleek design Easy setup Fast, clean-tasting results Tank-free, direct faucet connection What We Don’t Like Not compatible with all faucets The Brondell Countertop Water Filtration System is one of those rare finds that blends power with convenience. We found that this countertop water filter delivers crisp, odor-free water while taking up surprisingly little space on the counter. The Brondell Cypress has been independently tested and certified by the Water Quality Association (WQA) to meet NSF/ANSI standards 42, 53, and 372, and it uses a patented three-stage Nanotrap filtration system with carbon block technology to capture a wide range of impurities, including bacteria, viruses, VOCs , and other harmful chemicals. During testing, we were impressed by how easy it is to set up. For most standard faucets, installation only required attaching the provided adaptor and tightening it into place, which took around 10 minutes. For those with nonstandard faucets, there’s an optional under-counter connection available for purchase. When we tried that method, it took closer to 30 minutes to hook up to the main cold water line and install the T-valve. Once connected, the system dispensed fresh, clean water instantly with no waiting required. One thing to note: The Brondell Cypress may not be compatible with pull-down or pull-out faucets, so check your fixture style before purchasing. The filter trio includes a composite plus filter, a Nanotrap filter, and a carbon block filter. The first and third stages need to be replaced every six months, while the Nanotrap filter lasts about a year. Even with this multi-layer system, the Brondell takes up minimal counter space at just 3.75 x 10.5 x 13.5 inches. Between its sleek design and standout performance, it’s a reliable pick for anyone who wants cleaner, better-tasting water without the installation headaches of a built-in system. Filtration Type: 3-stage carbon and Nanotrap filtration \| Contaminants Filtered: Chlorine, heavy metals, lead, PFOA, PFOS, VOCs, and other impurities \| Retains Minerals: Yes \| Certified By: WQA Gold Seal to NSF/ANSI 42, 53, 401, and 372 \| Dimensions: 10.5 x 13.5 x 3.75 inches Credit: The Spruce Eats Credit: The Spruce Eats Credit: The Spruce Eats What We Like Removes fluoride and other common contaminants Smooth, refreshing water Reverse osmosis system What We Don’t Like Larger countertop footprint Filters water slowly For those focused on fluoride removal, the AlcaPure Countertop Reverse Osmosis Filter proved to be one of the strongest performers we tested. With growing concern that excessive fluoride may cause issues such as tooth discoloration and bone weakness, this model is designed to help address that by removing up to 95 percent of fluoride and as much as 99 percent of other contaminants. 1 2 Setup is simple since it’s a countertop model that doesn’t need plumbing: Just plug it in and pour water into the front drawer. During testing, we found it removed all traces of any chlorine odor as well as the faint metallic taste from our city tap water. The resulting water tasted light, crisp, and noticeably cleaner. We did notice that the water filtering process does take some patience. It takes roughly 15 minutes to produce a half-gallon of clean water, so you’ll likely find yourself refilling the unfiltered water drawer throughout the day. The device’s reverse osmosis membrane and filters have been certified by the International Association of Plumbing & Mechanical Officials (IAPMO) to NSF standards 42 and 58, but the unit itself is not fully NSF-certified according to the NSF database. The membrane should be replaced every two years, while the other three filters last about a year. 3 A built-in LED display conveniently signals when it’s time for replacements, taking the guesswork out of maintenance. While the AlcaPure sits on the higher end of the price range and is a bit larger than some of the competition (9.5 x 14.5 x 16.25 inches), its impressive performance, polished design, and highly effective fluoride reduction make it well worth the investment. Filtration Type: Reverse osmosis \| Contaminants Filtered: Chlorine, industrial chemicals, pesticides, herbicides, turbidity, VOCs, microorganisms \| Retains Minerals: No \| Certified By: IAPMO \| Dimensions: 9.5 x 14.5 x 16.25 inches Credit: The Spruce Eats Credit: The Spruce Eats Credit: The Spruce Eats What We Like Fast filtration time Quiet-powered filtration Keeps essential minerals What We Don’t Like Needs an outlet nearby If you’re looking for a fast, compact, and reliable countertop filter, the Aquasana Clean Water Machine hits all the right notes. This countertop water filter measures on the smaller side at just 9.7 x 8 x 11.6 inches, making it easy to find a countertop spot for it under a cabinet. You’ll also need to place it near an outlet since that’s part of the magic. This filter uses powered filtration rather than gravity. That design allows you to access filtered water much faster than with most systems. In testing, we found that it only took 15 seconds to filter 16 ounces of water. We did notice a small issue when filling a gallon container, as the dispenser sits only a few inches from the filter housing, leaving limited clearance and some minor splashing. The filter is easy to operate by simply pressing the rapid-release button to start and tapping it again to stop. We were impressed that this single activated carbon filter cleared up the cloudy appearance of our tap water and removed both metallic and chlorine odors and aftertaste. To boot, this model doesn’t remove beneficial minerals such as calcium, magnesium, and potassium. Tested and certified by the WQA, this filter meets NSF standards 42, 53, and 401. Setup took us about 10 minutes, including flushing the system as the company recommends when replacing the filter. Each filter lasts around six months, and a built-in indicator light lets you know when it’s time for a replacement. The filters are conveniently sold in two-packs for a full year of clean water. Filtration Type: Carbon filtration, ion exchange, and sub-micron mechanical filtration \| Contaminants Filtered: Removes 78 contaminants, including chlorine, chloramine, lead, VOCs, asbestos, turbidity, mercury, cysts, PFOA/PFOS, herbicides, pesticides, pharmaceuticals, and microplastics \| Retains Minerals: Yes \| Certified By: WQA \| Dimensions: 9.7 x 8 x 11.6 inches Credit: The Spruce Eats Credit: The Spruce Eats Credit: The Spruce Eats What We Like Two-gallon capacity Long-lasting filters Sleek, durable stainless steel design No power or plumbing required What We Don’t Like Large size needs dedicated counter space The Big Berkey Water Filter offers a high-capacity system that holds more than two gallons of water, making it ideal for households of two to four. While it does take up a fair amount of vertical height (21 inches high), the trade-off is fewer refills and consistently great-tasting water. This model uses a pair of Black Berkey filter elements, each rated to purify up to 6,000 gallons of water. How long that lasts depends on daily use. A family filtering about two gallons per day could see the filters last as long as eight years, though heavier use will shorten their lifespan. When the flow rate slows or you hit capacity, the filters can be cleaned or replaced. You can also install additional filters to increase the flow rate or double the filtration capacity. For those who need added purification, a separate pair of fluoride and arsenic filters is available. The system doesn’t require electricity or a faucet connection, though it does benefit from regular monitoring for best performance. The filters were tested and certified by Los Angeles County and independent labs to NSF standards 53 and 42. In testing, we found that the Big Berkey removed the metallic smell and taste from our tap water, replacing it with a clean, mineral-like finish that felt smooth and refreshing. The stainless steel build gives it a polished, modern look that feels like a more elevated version of a standard water cooler. Because it’s gravity-fed, filtration takes about one hour per gallon. Water is dispensed by pressing the lever at the base, which releases a steady stream from the spigot. We found it most convenient to keep the system near the sink for easy refills. Please note that Big Berkey does not warranty products purchased through Amazon. The company states : “We routinely receive requests for assistance/support from Amazon purchases, and most times are unfortunately unable to provide service support. As a result, and due to the inability of Amazon to assist in policing and removing fraudulent/imitation Berkey products, we do not recommend purchasing through Amazon.” Filtration Type: Carbon filtration and ion exchange with optional post-filtration fluoride filters \| Contaminants Filtered: Heavy metals, VOCs, nitrates, radon 222, trihalomethanes, chromium, herbicides, pesticides, organic solvents, others \| Retains Minerals: Yes \| Certified By: Los Angeles County and independent labs \| Dimensions: 21 x 8.5 x 8.5 inches Credit: The Spruce Eats Credit: The Spruce Eats Credit: The Spruce Eats What We Like Removes over 80 contaminants Produces exceptionally pure water Easy-to-read digital display What We Don’t Like Must hold button to pour Reverse osmosis works by pushing water through a semipermeable membrane that captures some of the smallest contaminants, even those on a molecular level. This process removes substances like salt, dirt, and other particulates that most standard filters cannot touch, producing an exceptionally pure taste and clear water. The AquaTru Countertop Reverse Osmosis Filter uses a four-stage filtration system, including a reverse osmosis membrane, to transform tap water into clean, great-tasting drinking water. To use, simply fill the one-gallon tank, and the system converts it into about three quarts of filtered water. During testing, we found that it completely transformed our cloudy, funky-tasting tap water into crystal-clear, odor-free water with no perceptible aftertaste. Setup required a few components, but the helpful instructional videos made the process easy to follow. To dispense water, press and hold the button, then release when your glass is full. We did notice slight dripping after releasing the button and found it mildly inconvenient to have to hold it down, but its sleek, modern design more than made up for that small drawback. It is also reasonably compact but does require an outlet for operation. The AquaTru includes a digital display that shows when it is time to replace the filters. The reverse osmosis filter lasts around two years, while the pre/carbon filter lasts six months and the carbon VOC filter lasts up to one year. Replacements are sold as a three-piece set. This system has been tested and certified by the IAPMO to meet NSF standards 42, 53, 58, 401, and P473, and the filters remove 83 contaminants, including lead, arsenic, fluoride, chlorine, and nitrates. Filtration Type: 4-stage reverse osmosis \| Contaminants Filtered: Removes 83 contaminants, including lead, arsenic, PFAs, fluoride, chlorine, and nitrates \| Retains Minerals: No \| Certified By: Tested and certified by IAPMO to meet NSF/ANSI standards 41, 53, 58, 401 \| Dimensions: 14 x 14 x 12 inches Credit: The Spruce Eats Credit: The Spruce Eats Credit: The Spruce Eats Credit: The Spruce Eats Continue to 5 of 9 below. What We Like Elegant glass carafe design Fast filtration time Adds back essential minerals What We Don’t Like Not fully NSF-certified The Bluevua Reverse Osmosis Countertop Water Filter combines the simplicity of a water filter pitcher with the power of a multi-stage filtration system. Designed much like a drip coffee maker, it automatically fills its glass carafe with purified water once the filtration process finishes. The carafe is made of durable borosilicate glass, holds up to seven cups, and features easy-to-read measurement markings. The setup for this water filter is simpler than most. Just plug it in, flush the system a few times before first use as the manufacturer recommends, and press the button to start filtering. In testing, we found that it was impressively fast, producing a full pitcher of clean water in less than five minutes. This system uses a four-stage filtration process that includes a reverse osmosis membrane. We found that it produced clean, crisp-tasting water compared to the cloudy tap water poured into the unfiltered side. We also appreciated the optional mineral insert, which restores essential minerals and gives the water a refreshing mineral-water flavor. The stage one, two, and four filters need replacing about once a year, while the stage three filter lasts up to two years. A digital display shows the water quality, pitcher level, and filter life, conveniently alerting you when it’s time to replace each one. SGS has certified these filters to NSF standards 42, 53, and 401, though the system itself is not fully NSF-certified according to the NSF database. Filtration Type: 4-stage reverse osmosis \| Contaminants Filtered: Chlorides, lead, chlorine, fluoride, heavy metals, mercury, radium, chromium, arsenic, chloramine \| Retains Minerals: No \| Certified By: SGS \| Dimensions: 15 x 10.9 x 14.3 inches Credit: The Spruce Eats Credit: The Spruce Eats Credit: The Spruce Eats What We Like Fast filtration time Compact and modern aesthetic Easy to use What We Don’t Like Loud while running Best known for its classic water filter pitchers, Brita brings the same trusted simplicity to its countertop model. We found that setup was just as easy as it is with its pitchers, with clear instructions right on the machine itself. Simply plug it in, run a few water cycles, and it’s ready to go. In testing, we found that it produced clean, smooth, and refreshing water that tasted noticeably fresher than our tap water. One standout feature of this model is its speed. It filtered water within seconds, going from the unfiltered tank to our glass almost instantly once we pressed the button. Because the stream dispenses quickly, we recommend using a taller glass to avoid splashing. We also liked the sleek, space-saving design, which fits comfortably in smaller kitchens. The filter operates on the louder side while running, but it’s quiet when idle. It only filters room-temperature water, though we found that refrigerating the unfiltered tank before use provides a simple workaround as long as you remember to secure the opening at the bottom first. The Brita Hub includes a digital display that lights up when it’s time to replace the filter, which typically lasts around six months. The system is tested and certified by the WQA to NSF standards 42 and 401 and by the IAPMO to NSF standard 53. Filtration Type: Pressurized carbon block filtration \| Contaminants Filtered: 70+ contaminants, including chlorine, chloramine, lead, mercury, PFOA/PFOS, and microplastics \| Retains Minerals: Yes \| Certified By: WQA to NSF/ANSI 42 and 401; IAPMO to NSF/ANSI 53 \| Dimensions: 14.4 x 7.5 x 11.4 inches Credit: The Spruce Eats Credit: The Spruce Eats Credit: The Spruce Eats What We Like Sleek stainless steel design Noticeably light and clean-tasting water Multiple matte color options What We Don’t Like Complex setup and priming The Boroux Legacy Compact Water Filter System blends timeless style with powerful gravity-fed filtration. Similar in concept to the Big Berkey, this system features upper and lower stainless steel chambers and comes in classic silver, matte black, or matte white finishes. During testing, we found the matte stainless look exceptionally sleek, as it fit seamlessly into our kitchen and looked more like decor than a countertop appliance. The system operates with two Foundation filters, with the option to add fluoride filters for extra purification. Simply pour water into the upper chamber and let gravity do the work, slowly filtering it into the lower reservoir, which dispenses through a stainless steel spigot. We appreciated the water-level spigot, which made it easy to tell when to refill. One downside we encountered with this system was the setup. Between reading instructions, watching online tutorials, and priming the filters, it took us nearly two hours to get it up and running. But in the end, we found that the results were worth it. The water tasted smooth and light, with a clean, refreshing finish. The system holds 1.8 gallons and performs best when kept near the sink for easy refills. Filters should be replaced about every 12 months, depending on usage. The Boroux Legacy Compact is WQA-certified to NSF/ANSI/CAN 372 for lead-free compliance and has been independently tested by third-party labs for additional performance claims. Filtration Type: Gravity-fed dual Foundation filters (optional fluoride add-ons) \| Contaminants Filtered: Third-party tested for 70+ contaminants, including chlorine, chloramine, lead, mercury, and PFAS (PFOA/PFOS) \| Retains Minerals: Yes \| Certified By: WQA to NSF/ANSI/CAN 372 (lead-free); additional performance independently tested \| Dimensions: 17.5 x 8 x 8 inches What We Like Fits easily on small countertops Stylish color options Refreshing, clean taste What We Don’t Like Spigot placement limits positioning The LifeStraw Home Studio Water Filter Dispenser proves that small can still be mighty. Compact enough for most countertops, this model offers clean, great-tasting water in a sleek, modern design available in colors like orchid pink, jade green, and soft neutrals too. Setup is refreshingly simple: rinse the carbon filter, twist it into place, and run a few rinse cycles. The 10-cup dispenser filters a full batch of water in about 10 to 15 minutes, combining a membrane microfilter that lasts roughly one year (264 gallons) with an activated carbon and ion exchange filter that should be replaced every two months (40 gallons). Both filter types are sold separately and install easily with a twist. Overall, we were highly impressed by the fresh, crisp taste of the filtered water, especially given the unit’s minimalist design and easy setup. In testing, we found that the spigot placement at the base made positioning a little tricky. It needs to hang slightly off the edge of the counter or sink to dispense water. However, at just over 10 inches tall and 6.7 inches wide, it can also fit inside a refrigerator if you prefer chilled, filtered water. We also found that filling the upper reservoir about three-quarters full, or roughly seven to eight cups, allowed for the smoothest flow and prevented water from lingering in the top chamber. This dispenser is independently tested to meet NSF/ANSI standards 42 and 53 and is proven to remove bacteria, parasites, microplastics, chlorine, organic chemical matter, and heavy metals like lead, all while retaining healthy minerals. Filtration Type: Membrane microfilter + activated carbon + ion exchange\| Contaminants Filtered: Bacteria, parasites, microplastics, chlorine, organic chemical matter, and heavy metals including lead \| Retains Minerals: Yes \| Certified By: Independently tested to meet NSF/ANSI 42, 53, 401, P473 (PFAS) \| Dimensions: 10.4 x 6.7 x 8.5 inches Final Verdict Overall, we were most impressed by the Brondell Cypress Three-Stage Countertop Water Filtration System for its quick setup and clean, odor-free taste. For fluoride removal, the AlcaPure Countertop Reverse Osmosis Filter is our top choice for its powerful and efficient filtration system. How We Tested Countertop Water Filters We spent more than 1,395 hours testing 11 of the most popular countertop water filters using tap water from New York, San Francisco, Seattle, and several cities in the Midwest and South. Each model was rated on taste, filtration speed, ease of use, design, and overall value to see how it performed in everyday use. Please note that this test focused on aesthetic performance, including taste, smell, and usability, and did not evaluate contaminant removal such as lead, pharmaceuticals, or pesticides. All products included on this list are NSF-certified or certified by a third party to NSF standards. For details, see individual product certifications or verify listings directly with NSF. Taste and Smell: To start, we sampled unfiltered tap water and compared it to the filtered version from each unit. Our testers noted how effectively the systems removed metallic, sulfur, and chlorine flavors and whether the final result tasted clean, light, and refreshing enough to drink all day. Ease of Use: We tracked how long it took each filter to process a full batch, how often refills were needed, and how intuitive the installation and operation felt. Filters that were quick to set up, simple to refill, and easy to maintain scored highest for daily convenience. Design & Value: Our testers assessed each filter’s footprint, build quality, and refill experience, along with how well it fit under a faucet or on a countertop. They also compared overall performance and long-term filter costs to determine which models offered the best balance of design, function, and value. What to Look for in a Countertop Water Filter System Style Countertop water filters generally come in two styles: faucet diverters and freestanding units. Faucet diverters attach directly to your kitchen faucet using a small connector or hose. Once installed, you can easily switch between unfiltered and filtered water. Setup is usually simple and doesn’t require tools. Freestanding filters, on the other hand, don’t need a faucet connection. You just fill the top reservoir with tap water and let gravity—or in some cases, an electric pump—do the rest. The filtered water collects in a lower chamber or carafe, ready to pour. These tend to take up more counter space, but they’re perfect for renters or anyone who prefers a setup that doesn’t rely on plumbing. If you drink a lot of water or live in a larger household, consider choosing a higher-capacity filter so you’re not constantly refilling throughout the day. Purpose Before you buy, think about what you want your water filter to accomplish. If you’re mainly after better-tasting water, a simple single-stage carbon filter will likely do the job by removing chlorine and unpleasant odors. If your area has more serious water quality issues, or you just want the highest level of purification, a system with multiple filtration stages is a better choice. Check your city’s annual water quality report to see what’s in your tap water. ⁶ If you’re on well water, you can order a private test through a state-certified lab to identify potential contaminants. More advanced countertop systems often use a combination of carbon absorption, ion exchange, and reverse osmosis. Together, these target everything from larger sediment particles to microscopic contaminants, giving you the cleanest water possible. Filter Life Every countertop water filter needs its filters replaced regularly to maintain performance. The lifespan depends on both the model and how much water you use, but most need replacement roughly every six months. Some filters last longer, (especially reverse osmosis membranes) while others may need changing sooner if your water has more sediment or minerals. Replacement costs also vary, so it’s a good idea to check pricing before committing to a system. Staying consistent with filter changes keeps your water tasting fresh and helps your filter last longer overall. Certification Third-party certification is one of the best ways to know that a countertop water filter actually does what it claims. Look for official marks from NSF, ANSI, or the Water Quality Association (WQA). These organizations independently test filters to confirm that they meet safety and performance standards. Be cautious of vague wording. A filter that says it’s “tested to” or “meets” NSF/ANSI standards isn’t necessarily certified. Only filters that have undergone full verification can display the NSF seal. ⁷ Double-checking this detail before buying ensures you’re getting a filter that’s been properly evaluated and not just advertised as one. FAQs What is the best way to filter tap water? The right filtration system depends on your home setup, water usage, and what you’re trying to remove. A countertop water filter is a great middle ground as it filters enough water for daily drinking and cooking without requiring plumbing. If you have the counter space, a faucet diverter system offers extra convenience since it connects directly to your sink, saving you from constant refills. If you prefer flexibility, freestanding filters are easy to move around and don’t need to attach to a faucet. Some even fit inside the fridge if you like your water chilled. Before deciding, it’s ideal to look up your local water quality report (available through your city or county’s utility department) or order a private test. Knowing what’s in your tap water helps you choose a filter that tackles the right contaminants. If a countertop option doesn’t fit your space or routine, consider an under-sink system, pitcher filter, or even a whole-house filter for broader coverage. Do countertop water filters remove fluoride? Some countertop filters remove fluoride, but not all of them do. Fluoride reduction typically requires an extra filtration step, usually through a reverse osmosis membrane or activated alumina filter. Always check product specs before buying, since fluoride removal isn’t standard in most carbon-based systems. If reducing fluoride is your priority, reverse osmosis filters remain the most effective choice, though even these can’t eliminate every trace. Are there any water filters that can remove all contaminants? “Not all filters remove all contaminants,” says Rick Andrew , formerly of NSF International’s Global Water Program. In other words, every filter works a little differently, so it’s important to first understand what’s actually in your water before deciding on a system. You can find this information in your local utility’s annual water quality report, which is available to all residents. If you have well water or think your plumbing could be contributing to contamination, a private lab can test your water in more detail. 4 While no home filter removes every possible contaminant, different types are made to tackle specific ones. Activated carbon filters are best for improving taste and reducing chlorine. Ion exchange filters target heavy metals like lead. Reverse osmosis systems remove a wide range of dissolved solids and chemicals, and UV filters are designed to neutralize bacteria and viruses. The key is to choose a filter that addresses your specific water concerns and confirm it’s NSF-certified, which ensures that the performance claims have been independently verified. You can view NSF's online listings here to see if a specific product is certified. How often do you need to change countertop water filters? Most countertop filters last around six months, but that can vary depending on the brand, system type, and how much water you use. Some filters need replacing every few months, while others, especially those with multi-stage or reverse osmosis systems, can last up to a year or even longer. For the best results, follow the manufacturer’s replacement schedule and pay attention to built-in indicators if your system has them. Changing filters on time keeps your water tasting fresh and prevents buildup that could affect performance. Do water filters work for well water? Yes, many countertop water filters work just as well with well water as they do with city water. The key is to choose one designed for your specific water quality. Private wells draw water directly from the ground and aren’t federally regulated like municipal systems. This means homeowners are responsible for regular testing and maintenance. For guidance, you can reach out to your state’s Department of Natural Resources or local health department. Well water quality can be affected by natural conditions (like soil composition) or nearby human activity such as farming or construction. 5 To stay safe, have your well tested by a state-certified lab each year for common contaminants like bacteria, nitrates, pesticides, volatile organic compounds (VOCs), and dissolved solids. 6 7 Filters that use UV light, sediment filtration, or reverse osmosis can all help improve well water safety. Watch for changes in taste, odor, or color as these can be early signs that it’s time to retest or replace your filter. How do you know if a water filter is counterfeit? Unfortunately, counterfeit filters are fairly common, especially online. According to Rick Andrew of NSF International, price is often the biggest red flag. If the cost seems too good to be true, it probably is. Other signs include packaging that looks overly glossy or cheaply made, certification marks that are tiny or hard to read, and filters that feel unusually light, which can mean they lack the proper filtration materials. When in doubt, buy replacements directly from the manufacturer or an authorized retailer to ensure you’re getting a genuine product. What do you need to know about reverse osmosis filters? “Reverse osmosis filters remove a large number of contaminants but are generally more expensive,” explains Sydney Evans , Science Analyst at the Environmental Working Group. Most reverse osmosis (RO) systems use a semi-permeable membrane combined with an activated carbon filter, which helps catch extra impurities and protect the delicate RO membrane. While this process produces exceptionally clean water, Evans says that these systems also tend to waste three to five times more water than they filter. Even so, reverse osmosis filters remain one of the best options for anyone wanting maximum purification, especially for reducing heavy metals, dissolved solids, and chemical pollutants. Why Trust the Spruce Eats As someone who has always been particular about the taste of her water, Cheyenne Elwell , product tester and writer for The Spruce Eats, understands the importance of reliable filtration. After years of preferring bottled spring water, she began using a fridge filter to cut down on plastic waste but has since fallen in love with the pure taste of the Boroux. Cheyenne has personally tested several of the countertop water filters on this list (and some that didn’t make the cut), along with a variety of kitchen and coffee products. She also writes for Business Insider and runs Baked Brewed Beautiful, a site dedicated to coffee, brewing, and sustainable living. Sources Rick Andrew was the Director of Global Business Development of Water Systems at the National Science Foundation . He retired in 2023 after 30 years of experience in preserving and maintaining clean drinking water and is responsible for NSF’s global sales and structuring of water-related programs. Sydney Evans is a Senior Science Analyst for the Environmental Working Group.
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If you click on links we provide, we may receive compensation. # We Tested the Best Countertop Water Filters for Delicious Water on Demand Cleaner, better-tasting water at home By [Cheyenne Elwell](https://www.thespruceeats.com/cheyenne-elwell-4685328) ![Cheyenne Elwell]() ![Cheyenne Elwell](https://www.thespruceeats.com/thmb/nyCI3lRWJwKxXYg1AzzrBjYuz4s=/200x200/filters:no_upscale:max_bytes$150000$:strip_icc/cheyenne-elwell1-f186094baa334ba484bfd802ae0c5f6a.jpg) [Cheyenne Elwell](https://www.thespruceeats.com/cheyenne-elwell-4685328) Cheyenne Elwell is a writer for The Spruce Eats specializing in food and coffee. She has written for Business Insider, MSN, and her own coffee blog. Learn about The Spruce Eats' [Editorial Process](https://www.thespruceeats.com/about-us-4776236#toc-editorial-guidelines) Updated on 10/17/25 ## In This Article View All In This Article - [Top Picks](https://www.thespruceeats.com/best-countertop-water-filters-4178851#toc-top-picks) - [Reviews](https://www.thespruceeats.com/best-countertop-water-filters-4178851#toc-reviews) - [Final Verdict](https://www.thespruceeats.com/best-countertop-water-filters-4178851#toc-final-verdict) - [How We Tested Countertop Water Filters](https://www.thespruceeats.com/best-countertop-water-filters-4178851#toc-how-we-tested-countertop-water-filters) - [What to Look for in a Countertop Water Filter System](https://www.thespruceeats.com/best-countertop-water-filters-4178851#toc-what-to-look-for-in-a-countertop-water-filter-system) - [FAQs](https://www.thespruceeats.com/best-countertop-water-filters-4178851#toc-faqs) - [Why Trust the Spruce Eats](https://www.thespruceeats.com/best-countertop-water-filters-4178851#toc-why-trust-the-spruce-eats) - [Sources](https://www.thespruceeats.com/best-countertop-water-filters-4178851#toc-sources) ![pressing button to dispense water on brita filter](https://www.thespruceeats.com/thmb/XzUt4Jh6zKe8WrBvwmwo7jFdwQM=/1500x0/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-brita-hub-instant-powerful-countertop-filtration-elena-garcia-10-f1e928ce618a439586a2135ab1fbfbde.jpeg) ![pressing button to dispense water on brita filter](https://www.thespruceeats.com/thmb/XzUt4Jh6zKe8WrBvwmwo7jFdwQM=/1500x0/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-brita-hub-instant-powerful-countertop-filtration-elena-garcia-10-f1e928ce618a439586a2135ab1fbfbde.jpeg) The Spruce Eats If tap water isn’t cutting it, there are far better options than stocking up on bottled water. Countertop water filtration systems are a convenient way to get clean, fresh, and great-tasting water right at home while helping you to cut down on plastic waste. These units either connect directly to your faucet or can be filled manually, reducing the presence of chlorine, heavy metals, and particulates in tap water. We spent nearly 1,400 hours testing popular countertop water filters to find the ones that truly deliver. Many of the models on our list are certified to reduce contaminants and all of them meet NSF standards, ensuring that each filter performs exactly as advertised. ## Top Picks Best Overall: [Brondell Countertop Water Filtration System at Amazon \$180](https://www.amazon.com/Brondell-Cypress-Countertop-Filter-Certified/dp/B00EEDJSES?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851) [Jump to Review](https://www.thespruceeats.com/best-countertop-water-filters-4178851#toc-best-overall-brondell-cypress-three-stage-countertop-water-filtration-system) Best for Fluoride Removal: SALE [AlcaPure Countertop Reverse Osmosis Filter at Amazon ~~\$370~~ \$299](https://www.amazon.com/dp/B0076CQXAQ?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851) [Jump to Review](https://www.thespruceeats.com/best-countertop-water-filters-4178851#toc-best-for-fluoride-removal-alcapure-countertop-reverse-osmosis-filter) Best Compact: [Aquasana Clean Water Machine at Amazon \$200](https://www.amazon.com/Aquasana-OptimH2O-Whole-Filtration-System/dp/B07MG7S77N/?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851) [Jump to Review](https://www.thespruceeats.com/best-countertop-water-filters-4178851#toc-best-compact-aquasana-clean-water-machine) Best Large: [Big Berkey Water Filter at Amazon \$367](https://www.amazon.com/Berkey-Gravity-Fed-Filter-Purification-Elements/dp/B00CYW3EVO?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851) [Jump to Review](https://www.thespruceeats.com/best-countertop-water-filters-4178851#toc-best-large-big-berkey-water-filter) Best Reverse Osmosis: [AquaTru Countertop Water Filtration System at Amazon \$465](https://www.amazon.com/Countertop-Filtration-Purification-System-Exclusive/dp/B01MDLMBKC/?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851) [Jump to Review](https://www.thespruceeats.com/best-countertop-water-filters-4178851#toc-best-reverse-osmosis-aquatru-countertop-water-filtration-purification-system) Best With a Removable Pitcher: SALE [Bluevua Reverse Osmosis Countertop Water Filter at Amazon ~~\$434~~ \$299](https://www.amazon.com/Bluevua-RO100ROPOT-Countertop-Purification-Filtration/dp/B09KRDK677?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851) [Jump to Review](https://www.thespruceeats.com/best-countertop-water-filters-4178851#toc-best-with-a-removable-pitcher-bluevua-ro100ropot-reverse-osmosis-system-countertop-water-filter) Best with Presets: [Brita Hub Countertop Water Filter at Amazon \$195](https://www.amazon.com/dp/B0BLHX4JN1?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851) [Jump to Review](https://www.thespruceeats.com/best-countertop-water-filters-4178851#toc-best-with-presets-brita-hub-instant-powerful-countertop-water-filtration-system) Best Design: [Boroux Legacy Gravity-Fed Countertop Stainless Steel Water Filter System at Amazon \$375](https://www.amazon.com/dp/B0DB68DD6Q?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851) [Jump to Review](https://www.thespruceeats.com/best-countertop-water-filters-4178851#toc-best-design-boroux-legacy-gravity-fed-countertop-stainless-steel-water-filter-system) Best Budget: [LifeStraw Water Filter Dispenser at Amazon \$55](https://www.amazon.com/LifeStraw-Dispenser-BPA-Free-parasites-microplastics/dp/B0DGH2GRXX?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851) [Jump to Review](https://www.thespruceeats.com/best-countertop-water-filters-4178851#toc-best-budget-lifestraw-home-studio-water-filter-dispenser) ## Best Overall [Brondell Countertop Water Filtration System](https://www.amazon.com/Brondell-Cypress-Countertop-Filter-Certified/dp/B00EEDJSES?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851) [![Amazon Brondell Cypress Three-Stage Countertop Water Filtration System](https://www.thespruceeats.com/thmb/RQBBVMPfZgfvDeIgurjEroYRglc=/fit-in/1500x1000/filters:no_upscale:max_bytes$150000$:strip_icc/Brondell-Cypress-Three-Stage-Countertop-Water-Filtration-System-72bc539a10484511be00795f95c22ca2.jpg) ![Amazon Brondell Cypress Three-Stage Countertop Water Filtration System](https://www.thespruceeats.com/thmb/RQBBVMPfZgfvDeIgurjEroYRglc=/fit-in/1500x1000/filters:no_upscale:max_bytes$150000$:strip_icc/Brondell-Cypress-Three-Stage-Countertop-Water-Filtration-System-72bc539a10484511be00795f95c22ca2.jpg)](https://www.amazon.com/Brondell-Cypress-Countertop-Filter-Certified/dp/B00EEDJSES?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851) Credit: Amazon [\$180 \$155 at Amazon](https://www.amazon.com/Brondell-Cypress-Countertop-Filter-Certified/dp/B00EEDJSES?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851) [View on Staples](https://www.staples.com/Brondell-H2O-Cypress-Countertop-Water-Filtration-System/product_1904076?cid=AFF:1904076&slfpid=3) [View on Build.com](https://www.build.com/product/summary/883137?slfpid=3&source=shz_2244272&uid=2244272) What We Like - Compact and sleek design - Easy setup - Fast, clean-tasting results - Tank-free, direct faucet connection What We Don’t Like - Not compatible with all faucets The Brondell Countertop Water Filtration System is one of those rare finds that blends power with convenience. We found that this countertop water filter delivers crisp, odor-free water while taking up surprisingly little space on the counter. The Brondell Cypress has been independently tested and certified by the [Water Quality Association (WQA)](https://wqa.org/grow/product-certification/) to meet NSF/ANSI standards 42, 53, and 372, and it uses a patented three-stage Nanotrap filtration system with carbon block technology to capture a wide range of impurities, including bacteria, viruses, [VOCs](https://www.epa.gov/indoor-air-quality-iaq/what-are-volatile-organic-compounds-vocs), and other harmful chemicals. During testing, we were impressed by how easy it is to set up. For most standard faucets, installation only required attaching the provided adaptor and tightening it into place, which took around 10 minutes. For those with nonstandard faucets, there’s an optional under-counter connection available for purchase. When we tried that method, it took closer to 30 minutes to hook up to the main cold water line and install the T-valve. Once connected, the system dispensed fresh, clean water instantly with no waiting required. One thing to note: The Brondell Cypress may not be compatible with pull-down or pull-out faucets, so check your fixture style before purchasing. The filter trio includes a composite plus filter, a Nanotrap filter, and a carbon block filter. The first and third stages need to be replaced every six months, while the Nanotrap filter lasts about a year. Even with this multi-layer system, the Brondell takes up minimal counter space at just 3.75 x 10.5 x 13.5 inches. Between its sleek design and standout performance, it’s a reliable pick for anyone who wants cleaner, better-tasting water without the installation headaches of a built-in system. Filtration Type: 3-stage carbon and Nanotrap filtration \\| Contaminants Filtered: Chlorine, heavy metals, lead, PFOA, PFOS, VOCs, and other impurities \\| Retains Minerals: Yes \\| Certified By: WQA Gold Seal to NSF/ANSI 42, 53, 401, and 372 \\| Dimensions: 10.5 x 13.5 x 3.75 inches - ![water filter from side, on counter next to sink](https://www.thespruceeats.com/thmb/22SMQroXpePoe2u-wBQJYYyCifc=/fit-in/1500x2616/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-brondell-cypress-countertop-system-diana-weesner-18-313827fec2de443bad1a72276de1995f.jpeg) ![water filter from side, on counter next to sink](https://www.thespruceeats.com/thmb/22SMQroXpePoe2u-wBQJYYyCifc=/fit-in/1500x2616/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-brondell-cypress-countertop-system-diana-weesner-18-313827fec2de443bad1a72276de1995f.jpeg) Credit: The Spruce Eats - ![pressing button on top of water filter]() ![pressing button on top of water filter](https://www.thespruceeats.com/thmb/wDEN54Ma9XY42mZGIocvsIGtmfM=/fit-in/1500x2632/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-brondell-cypress-countertop-system-diana-weesner-12-c15d2c05a07741d599433d898699da76.jpeg) Credit: The Spruce Eats - ![water filter box]() ![water filter box](https://www.thespruceeats.com/thmb/YVSjSWg3JZx8Rn03q16Zcu2QWVs=/fit-in/1500x2632/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-brondell-cypress-countertop-system-diana-weesner-21-c330ea13bc3a4881b3fa7e8f5b5a3892.jpeg) Credit: The Spruce Eats - ![water filter from side, on counter next to sink](https://www.thespruceeats.com/thmb/-AjwSSJilQfZ-77ry6PgCYeqoPI=/fit-in/200x2616/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-brondell-cypress-countertop-system-diana-weesner-18-313827fec2de443bad1a72276de1995f.jpeg) ![water filter from side, on counter next to sink](https://www.thespruceeats.com/thmb/-AjwSSJilQfZ-77ry6PgCYeqoPI=/fit-in/200x2616/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-brondell-cypress-countertop-system-diana-weesner-18-313827fec2de443bad1a72276de1995f.jpeg) - ![pressing button on top of water filter](https://www.thespruceeats.com/thmb/DNOGtJWNQCHTJxUMutwDJAniy2o=/fit-in/200x2632/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-brondell-cypress-countertop-system-diana-weesner-12-c15d2c05a07741d599433d898699da76.jpeg) ![pressing button on top of water filter](https://www.thespruceeats.com/thmb/DNOGtJWNQCHTJxUMutwDJAniy2o=/fit-in/200x2632/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-brondell-cypress-countertop-system-diana-weesner-12-c15d2c05a07741d599433d898699da76.jpeg) - ![water filter box](https://www.thespruceeats.com/thmb/S7knYlnkUtFrWtUYhnIKG30Va20=/fit-in/200x2632/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-brondell-cypress-countertop-system-diana-weesner-21-c330ea13bc3a4881b3fa7e8f5b5a3892.jpeg) ![water filter box](https://www.thespruceeats.com/thmb/S7knYlnkUtFrWtUYhnIKG30Va20=/fit-in/200x2632/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-brondell-cypress-countertop-system-diana-weesner-21-c330ea13bc3a4881b3fa7e8f5b5a3892.jpeg) ## Best for Fluoride Removal [AlcaPure Countertop Reverse Osmosis Filter](https://www.amazon.com/dp/B0076CQXAQ?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851) [![Amazon AlcaPure Reverse Osmosis Countertop Water Filter](https://www.thespruceeats.com/thmb/XslYXytl2wYF0h4vmzXP2mJQCs0=/fit-in/1500x1000/filters:no_upscale:max_bytes$150000$:strip_icc/alcapure-countertop-reverse-osmosis-filter-02b2b536a6e4454f9abd01642ab15747.jpg) ![Amazon AlcaPure Reverse Osmosis Countertop Water Filter](https://www.thespruceeats.com/thmb/XslYXytl2wYF0h4vmzXP2mJQCs0=/fit-in/1500x1000/filters:no_upscale:max_bytes$150000$:strip_icc/alcapure-countertop-reverse-osmosis-filter-02b2b536a6e4454f9abd01642ab15747.jpg)](https://www.amazon.com/dp/B0076CQXAQ?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851) Credit: Amazon [\$370 \$299 at Amazon](https://www.amazon.com/dp/B0076CQXAQ?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851) What We Like - Removes fluoride and other common contaminants - Smooth, refreshing water - Reverse osmosis system What We Don’t Like - Larger countertop footprint - Filters water slowly For those focused on fluoride removal, the AlcaPure Countertop Reverse Osmosis Filter proved to be one of the strongest performers we tested. With growing concern that excessive fluoride may cause issues such as tooth discoloration and bone weakness, this model is designed to help address that by removing up to 95 percent of fluoride and as much as 99 percent of other contaminants.12 Setup is simple since it’s a countertop model that doesn’t need plumbing: Just plug it in and pour water into the front drawer. During testing, we found it removed all traces of any chlorine odor as well as the faint metallic taste from our city tap water. The resulting water tasted light, crisp, and noticeably cleaner. We did notice that the water filtering process does take some patience. It takes roughly 15 minutes to produce a half-gallon of clean water, so you’ll likely find yourself refilling the unfiltered water drawer throughout the day. The device’s reverse osmosis membrane and filters have been certified by the [International Association of Plumbing & Mechanical Officials](https://www.iapmo.org/) (IAPMO) to NSF standards 42 and 58, but the unit itself is not fully NSF-certified according to the NSF database. The membrane should be replaced every two years, while the other three filters last about a year.3 A built-in LED display conveniently signals when it’s time for replacements, taking the guesswork out of maintenance. While the AlcaPure sits on the higher end of the price range and is a bit larger than some of the competition (9.5 x 14.5 x 16.25 inches), its impressive performance, polished design, and highly effective fluoride reduction make it well worth the investment. Filtration Type: Reverse osmosis \\| Contaminants Filtered: Chlorine, industrial chemicals, pesticides, herbicides, turbidity, VOCs, microorganisms \\| Retains Minerals: No \\| Certified By: IAPMO \\| Dimensions: 9\.5 x 14.5 x 16.25 inches - ![alcapure countertop water filter on floor](https://www.thespruceeats.com/thmb/mt5Sqa2APuh2mLvFTD-80mRZn8s=/fit-in/1500x2667/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-rkin-alcapure-reverse-osmosis-countertop-jennifer-may-09-26b09fdc62154504a90da2a0e532e8f7.jpeg) ![alcapure countertop water filter on floor](https://www.thespruceeats.com/thmb/mt5Sqa2APuh2mLvFTD-80mRZn8s=/fit-in/1500x2667/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-rkin-alcapure-reverse-osmosis-countertop-jennifer-may-09-26b09fdc62154504a90da2a0e532e8f7.jpeg) Credit: The Spruce Eats - ![countertop water filter on counter, plugged in with orange lights on]() ![countertop water filter on counter, plugged in with orange lights on](https://www.thespruceeats.com/thmb/ttEZy3PP94f_fuhgB5deAePpfkU=/fit-in/1500x2624/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-rkin-alcapure-reverse-osmosis-countertop-jennifer-may-01-ef4645f8ebcb47988b6167166ad51708.jpeg) Credit: The Spruce Eats - ![countertop water filter water tank aerial view]() ![countertop water filter water tank aerial view](https://www.thespruceeats.com/thmb/6r6NyuawNRfJKxQxMTZz068f6nQ=/fit-in/1500x2656/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-rkin-alcapure-reverse-osmosis-countertop-jennifer-may-26-cddb240f1c5f41fd9a75b2b492f50bd4.jpeg) Credit: The Spruce Eats - ![alcapure countertop water filter on floor](https://www.thespruceeats.com/thmb/GXi4I8Y_tQ8SDjXnNkHIYnAOx54=/fit-in/200x2667/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-rkin-alcapure-reverse-osmosis-countertop-jennifer-may-09-26b09fdc62154504a90da2a0e532e8f7.jpeg) ![alcapure countertop water filter on floor](https://www.thespruceeats.com/thmb/GXi4I8Y_tQ8SDjXnNkHIYnAOx54=/fit-in/200x2667/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-rkin-alcapure-reverse-osmosis-countertop-jennifer-may-09-26b09fdc62154504a90da2a0e532e8f7.jpeg) - ![countertop water filter on counter, plugged in with orange lights on](https://www.thespruceeats.com/thmb/MMpqx4xh_JChOi39jJrFQ-zk2y4=/fit-in/200x2624/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-rkin-alcapure-reverse-osmosis-countertop-jennifer-may-01-ef4645f8ebcb47988b6167166ad51708.jpeg) ![countertop water filter on counter, plugged in with orange lights on](https://www.thespruceeats.com/thmb/MMpqx4xh_JChOi39jJrFQ-zk2y4=/fit-in/200x2624/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-rkin-alcapure-reverse-osmosis-countertop-jennifer-may-01-ef4645f8ebcb47988b6167166ad51708.jpeg) - ![countertop water filter water tank aerial view](https://www.thespruceeats.com/thmb/-TsPGnl33bRKHuuyRA4SRp9Nx3s=/fit-in/200x2656/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-rkin-alcapure-reverse-osmosis-countertop-jennifer-may-26-cddb240f1c5f41fd9a75b2b492f50bd4.jpeg) ![countertop water filter water tank aerial view](https://www.thespruceeats.com/thmb/-TsPGnl33bRKHuuyRA4SRp9Nx3s=/fit-in/200x2656/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-rkin-alcapure-reverse-osmosis-countertop-jennifer-may-26-cddb240f1c5f41fd9a75b2b492f50bd4.jpeg) ## Best Compact [Aquasana Clean Water Machine](https://www.amazon.com/Aquasana-OptimH2O-Whole-Filtration-System/dp/B07MG7S77N/?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851) [![Amazon Aquasana Clean Water Machine Countertop Water Filter](https://www.thespruceeats.com/thmb/JdJS_yfxHBMno-LrC35wA0i1Kcc=/fit-in/1500x1000/filters:no_upscale:max_bytes$150000$:strip_icc/amazon-aquasana-clean-water-machine-countertop-water-filter-cf4b42a923d84fd688bb7201a370db63.jpg) ![Amazon Aquasana Clean Water Machine Countertop Water Filter](https://www.thespruceeats.com/thmb/JdJS_yfxHBMno-LrC35wA0i1Kcc=/fit-in/1500x1000/filters:no_upscale:max_bytes$150000$:strip_icc/amazon-aquasana-clean-water-machine-countertop-water-filter-cf4b42a923d84fd688bb7201a370db63.jpg)](https://www.amazon.com/Aquasana-OptimH2O-Whole-Filtration-System/dp/B07MG7S77N/?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851) Credit: Amazon [\$200 at Amazon](https://www.amazon.com/Aquasana-OptimH2O-Whole-Filtration-System/dp/B07MG7S77N/?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851) [View on Walmart](https://www.walmart.com/ip/Aquasana-Clean-Water-Machine-Countertop-Water-Filter-System-AQ-CWM2-B/3839001059) [View on Aquasana.com](https://www.aquasana.com/countertop-water-filters/clean-water-machine/black-100348638.html) What We Like - Fast filtration time - Quiet-powered filtration - Keeps essential minerals What We Don’t Like - Needs an outlet nearby If you’re looking for a fast, compact, and reliable countertop filter, the Aquasana Clean Water Machine hits all the right notes. This countertop water filter measures on the smaller side at just 9.7 x 8 x 11.6 inches, making it easy to find a countertop spot for it under a cabinet. You’ll also need to place it near an outlet since that’s part of the magic. This filter uses powered filtration rather than gravity. That design allows you to access filtered water much faster than with most systems. In testing, we found that it only took 15 seconds to filter 16 ounces of water. We did notice a small issue when filling a gallon container, as the dispenser sits only a few inches from the filter housing, leaving limited clearance and some minor splashing. The filter is easy to operate by simply pressing the rapid-release button to start and tapping it again to stop. We were impressed that this single activated carbon filter cleared up the cloudy appearance of our tap water and removed both metallic and chlorine odors and aftertaste. To boot, this model doesn’t remove beneficial minerals such as calcium, magnesium, and potassium. Tested and certified by the WQA, this filter meets NSF standards 42, 53, and 401. Setup took us about 10 minutes, including flushing the system as the company recommends when replacing the filter. Each filter lasts around six months, and a built-in indicator light lets you know when it’s time for a replacement. The filters are conveniently sold in two-packs for a full year of clean water. Filtration Type: Carbon filtration, ion exchange, and sub-micron mechanical filtration \\| Contaminants Filtered: Removes 78 contaminants, including chlorine, chloramine, lead, VOCs, asbestos, turbidity, mercury, cysts, PFOA/PFOS, herbicides, pesticides, pharmaceuticals, and microplastics \\| Retains Minerals: Yes \\| Certified By: WQA \\| Dimensions: 9\.7 x 8 x 11.6 inches - ![aquasana water filter aerial view](https://www.thespruceeats.com/thmb/HQrOoleYTY2fSVIPfv-4Bq3j5qk=/fit-in/1500x2662/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-aquasana-clean-machine-michael-navarro-15-8e466d6f20594584a529f423ba97e952.jpeg) ![aquasana water filter aerial view](https://www.thespruceeats.com/thmb/HQrOoleYTY2fSVIPfv-4Bq3j5qk=/fit-in/1500x2662/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-aquasana-clean-machine-michael-navarro-15-8e466d6f20594584a529f423ba97e952.jpeg) Credit: The Spruce Eats - ![aquasana water filter from side, showing mug filled with water]() ![aquasana water filter from side, showing mug filled with water](https://www.thespruceeats.com/thmb/IPY4EsooIiuRj0VdQIbMyJKo80M=/fit-in/1500x2632/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-aquasana-clean-machine-michael-navarro-14-2aac3d2b9d5444acb924b3aafdea8770.jpeg) Credit: The Spruce Eats - ![aquasana water filter water reservoir]() ![aquasana water filter water reservoir](https://www.thespruceeats.com/thmb/o7aUFvHugw3Ad9ZeLzaM3_zTLIg=/fit-in/1500x2624/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-aquasana-clean-machine-michael-navarro-16-6e2915e88242485894110c536369569a.jpeg) Credit: The Spruce Eats - ![aquasana water filter aerial view](https://www.thespruceeats.com/thmb/vZn1StG1q5ZprrmTfnLB9d3wyWc=/fit-in/200x2662/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-aquasana-clean-machine-michael-navarro-15-8e466d6f20594584a529f423ba97e952.jpeg) ![aquasana water filter aerial view](https://www.thespruceeats.com/thmb/vZn1StG1q5ZprrmTfnLB9d3wyWc=/fit-in/200x2662/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-aquasana-clean-machine-michael-navarro-15-8e466d6f20594584a529f423ba97e952.jpeg) - ![aquasana water filter from side, showing mug filled with water](https://www.thespruceeats.com/thmb/pw71dGMNYywX_bkBJ3hmRdLP-10=/fit-in/200x2632/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-aquasana-clean-machine-michael-navarro-14-2aac3d2b9d5444acb924b3aafdea8770.jpeg) ![aquasana water filter from side, showing mug filled with water](https://www.thespruceeats.com/thmb/pw71dGMNYywX_bkBJ3hmRdLP-10=/fit-in/200x2632/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-aquasana-clean-machine-michael-navarro-14-2aac3d2b9d5444acb924b3aafdea8770.jpeg) - ![aquasana water filter water reservoir](https://www.thespruceeats.com/thmb/53kKGrtg0k4qnyXKf4OEbRIhNHM=/fit-in/200x2624/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-aquasana-clean-machine-michael-navarro-16-6e2915e88242485894110c536369569a.jpeg) ![aquasana water filter water reservoir](https://www.thespruceeats.com/thmb/53kKGrtg0k4qnyXKf4OEbRIhNHM=/fit-in/200x2624/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-aquasana-clean-machine-michael-navarro-16-6e2915e88242485894110c536369569a.jpeg) ## Best Large [Big Berkey Water Filter](https://www.amazon.com/Berkey-Gravity-Fed-Filter-Purification-Elements/dp/B00CYW3EVO?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851) [![Amazon Big Berkey Gravity-Fed Water Purifier](https://www.thespruceeats.com/thmb/cqsCpbTrI80Obgt5N7DUCu1ooco=/fit-in/1500x1000/filters:no_upscale:max_bytes$150000$:strip_icc/amazon-big-berkey-gravity-fed-water-purifier-6039ae3f515a45d89c607a463739775c.jpg) ![Amazon Big Berkey Gravity-Fed Water Purifier](https://www.thespruceeats.com/thmb/cqsCpbTrI80Obgt5N7DUCu1ooco=/fit-in/1500x1000/filters:no_upscale:max_bytes$150000$:strip_icc/amazon-big-berkey-gravity-fed-water-purifier-6039ae3f515a45d89c607a463739775c.jpg)](https://www.amazon.com/Berkey-Gravity-Fed-Filter-Purification-Elements/dp/B00CYW3EVO?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851) Credit: Amazon [\$367 at Amazon](https://www.amazon.com/Berkey-Gravity-Fed-Filter-Purification-Elements/dp/B00CYW3EVO?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851) [View on Bigberkeywaterfilters.com](https://www.bigberkeywaterfilters.com/big-berkey-water-filter.html?berkey_system_filters_included=56) [View on Bigberkeywaterfilters.com](https://www.bigberkeywaterfilters.com/big-berkey-water-filter.html) What We Like - Two-gallon capacity - Long-lasting filters - Sleek, durable stainless steel design - No power or plumbing required What We Don’t Like - Large size needs dedicated counter space The Big Berkey Water Filter offers a high-capacity system that holds more than two gallons of water, making it ideal for households of two to four. While it does take up a fair amount of vertical height (21 inches high), the trade-off is fewer refills and consistently great-tasting water. This model uses a pair of Black Berkey filter elements, each rated to purify up to 6,000 gallons of water. How long that lasts depends on daily use. A family filtering about two gallons per day could see the filters last as long as eight years, though heavier use will shorten their lifespan. When the flow rate slows or you hit capacity, the filters can be cleaned or replaced. You can also install additional filters to increase the flow rate or double the filtration capacity. For those who need added purification, a separate pair of fluoride and arsenic filters is available. The system doesn’t require electricity or a faucet connection, though it does benefit from regular monitoring for best performance. The filters were tested and certified by Los Angeles County and independent labs to NSF standards 53 and 42. In testing, we found that the Big Berkey removed the metallic smell and taste from our tap water, replacing it with a clean, mineral-like finish that felt smooth and refreshing. The stainless steel build gives it a polished, modern look that feels like a more elevated version of a standard water cooler. Because it’s gravity-fed, filtration takes about one hour per gallon. Water is dispensed by pressing the lever at the base, which releases a steady stream from the spigot. We found it most convenient to keep the system near the sink for easy refills. Please note that Big Berkey does not warranty products purchased through Amazon. The [company states](https://berkeyfilterwater.com/contact/https-berkeyfilterwater-com-contact-shipping-returns/): “We routinely receive requests for assistance/support from Amazon purchases, and most times are unfortunately unable to provide service support. As a result, and due to the inability of Amazon to assist in policing and removing fraudulent/imitation Berkey products, we do not recommend purchasing through Amazon.” Filtration Type: Carbon filtration and ion exchange with optional post-filtration fluoride filters \\| Contaminants Filtered: Heavy metals, VOCs, nitrates, radon 222, trihalomethanes, chromium, herbicides, pesticides, organic solvents, others \\| Retains Minerals: Yes \\| Certified By: Los Angeles County and independent labs \\| Dimensions: 21 x 8.5 x 8.5 inches - ![big berkey water filter on counter next to lots of citrus fruits, apples, avocados, and bananas](https://www.thespruceeats.com/thmb/aLj4wpWcp9_mqHyB5Tq_U9eyRKM=/fit-in/1500x2667/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-big-berkey-kim-souza-21-bbdc10a9f63f4b1686137d1dd2f05d5d.jpeg) ![big berkey water filter on counter next to lots of citrus fruits, apples, avocados, and bananas](https://www.thespruceeats.com/thmb/aLj4wpWcp9_mqHyB5Tq_U9eyRKM=/fit-in/1500x2667/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-big-berkey-kim-souza-21-bbdc10a9f63f4b1686137d1dd2f05d5d.jpeg) Credit: The Spruce Eats - ![sink filling big berkey water filter]() ![sink filling big berkey water filter](https://www.thespruceeats.com/thmb/XuLiP5m28TyqF28zoyz5luJ6cyA=/fit-in/1500x2665/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-big-berkey-kim-souza-01-62619ebe74a8402fa61f258b9b1a5593.jpeg) Credit: The Spruce Eats - ![all parts of big berkey water filter before putting together]() ![all parts of big berkey water filter before putting together](https://www.thespruceeats.com/thmb/4pBVG9lob5ccL5iEaHLgz28b4Og=/fit-in/1500x2624/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-big-berkey-kim-souza-33-48823dbdbd5c4df59207dfd210b1dcea.jpeg) Credit: The Spruce Eats - ![big berkey water filter on counter next to lots of citrus fruits, apples, avocados, and bananas]() ![big berkey water filter on counter next to lots of citrus fruits, apples, avocados, and bananas](https://www.thespruceeats.com/thmb/QWVPgZJtyVIxtobwP0m0bF4lSaY=/fit-in/200x2667/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-big-berkey-kim-souza-21-bbdc10a9f63f4b1686137d1dd2f05d5d.jpeg) - ![sink filling big berkey water filter]() ![sink filling big berkey water filter](https://www.thespruceeats.com/thmb/S_-nR_MAv5Gva3w6Cu-O86FBRQI=/fit-in/200x2665/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-big-berkey-kim-souza-01-62619ebe74a8402fa61f258b9b1a5593.jpeg) - ![all parts of big berkey water filter before putting together]() ![all parts of big berkey water filter before putting together](https://www.thespruceeats.com/thmb/6HHmHBAFK6qlZwNX26cnRNBw7CA=/fit-in/200x2624/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-big-berkey-kim-souza-33-48823dbdbd5c4df59207dfd210b1dcea.jpeg) ## Best Reverse Osmosis [AquaTru Countertop Water Filtration System](https://www.amazon.com/Countertop-Filtration-Purification-System-Exclusive/dp/B01MDLMBKC/?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851) [![Amazon AquaTru Countertop Water Filtration Purification System]() ![Amazon AquaTru Countertop Water Filtration Purification System](https://www.thespruceeats.com/thmb/h5jH1tO9KTkzW-GuNvvapv1WYok=/fit-in/1500x1000/filters:no_upscale:max_bytes$150000$:strip_icc/AquaTru-Countertop-Water-Filtration-Purification-System-77d02833b6434db2898a0acc551b78f8.jpg)](https://www.amazon.com/Countertop-Filtration-Purification-System-Exclusive/dp/B01MDLMBKC/?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851) Credit: Amazon [\$465 at Amazon](https://www.amazon.com/Countertop-Filtration-Purification-System-Exclusive/dp/B01MDLMBKC/?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851) [\$475 at Wayfair](https://www.wayfair.com/AquaTru--AquaTru-Countertop-Water-Filtration-System-with-Exclusive-4Stage-Ultra-Reverse-Osmosis-Technology-90AT03AT01-L3600-K~AUAT1000.html?slpfid=3) [\$466 \$465 at Home Depot](https://www.homedepot.com/p/AQUA-TRU-AquaTru-Reverse-Osmosis-Counter-Top-Water-Filtration-System-with-BPA-Free-Clean-Water-Tank-AT2000/302282068) What We Like - Removes over 80 contaminants - Produces exceptionally pure water - Easy-to-read digital display What We Don’t Like - Must hold button to pour Reverse osmosis works by pushing water through a semipermeable membrane that captures some of the smallest contaminants, even those on a molecular level. This process removes substances like salt, dirt, and other particulates that most standard filters cannot touch, producing an exceptionally pure taste and clear water. The AquaTru Countertop Reverse Osmosis Filter uses a four-stage filtration system, including a reverse osmosis membrane, to transform tap water into clean, great-tasting drinking water. To use, simply fill the one-gallon tank, and the system converts it into about three quarts of filtered water. During testing, we found that it completely transformed our cloudy, funky-tasting tap water into crystal-clear, odor-free water with no perceptible aftertaste. Setup required a few components, but the helpful instructional videos made the process easy to follow. To dispense water, press and hold the button, then release when your glass is full. We did notice slight dripping after releasing the button and found it mildly inconvenient to have to hold it down, but its sleek, modern design more than made up for that small drawback. It is also reasonably compact but does require an outlet for operation. The AquaTru includes a digital display that shows when it is time to replace the filters. The reverse osmosis filter lasts around two years, while the pre/carbon filter lasts six months and the carbon VOC filter lasts up to one year. Replacements are sold as a three-piece set. This system has been tested and certified by the IAPMO to meet NSF standards 42, 53, 58, 401, and P473, and the filters remove 83 contaminants, including lead, arsenic, fluoride, chlorine, and nitrates. Filtration Type: 4-stage reverse osmosis \\| Contaminants Filtered: Removes 83 contaminants, including lead, arsenic, PFAs, fluoride, chlorine, and nitrates \\| Retains Minerals: No \\| Certified By: Tested and certified by IAPMO to meet NSF/ANSI standards 41, 53, 58, 401 \\| Dimensions: 14 x 14 x 12 inches - ![digital interface for aquatru water filter]() ![digital interface for aquatru water filter](https://www.thespruceeats.com/thmb/jC6iTZHRkL70O3J0wJK1UG0Yu_Y=/fit-in/1500x2016/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-aquatru-countertop-filtration-purification-system-tracy-allison-29-cf555c97734044029fbb6bfbc3841325.jpeg) Credit: The Spruce Eats - ![filling tank of aquatru water filter with sink faucet]() ![filling tank of aquatru water filter with sink faucet](https://www.thespruceeats.com/thmb/0z1ZItxxYJ9LqfVcAT96oBIVUaw=/fit-in/1500x1944/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-aquatru-countertop-filtration-purification-system-tracy-allison-21-1e8df6e2dc894fc481d05dff5d00e2f2.jpeg) Credit: The Spruce Eats - ![water tank of aquatru water filter]() ![water tank of aquatru water filter](https://www.thespruceeats.com/thmb/XNESYCAX8k-jfRFy6DzBSJCZ3EI=/fit-in/1500x2640/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-aquatru-countertop-filtration-purification-system-tracy-allison-62-6417086652f94e4eb3edee0771a75b2a.jpeg) Credit: The Spruce Eats - ![aquatru water filter]() ![aquatru water filter](https://www.thespruceeats.com/thmb/Tomb68uVxKkR58QSuqEatu5XGcE=/fit-in/1500x2016/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-aquatru-countertop-filtration-purification-system-tracy-allison-04-cb7985f6ded04175b871fecebfc2dd9c.jpeg) Credit: The Spruce Eats - ![digital interface for aquatru water filter]() ![digital interface for aquatru water filter](https://www.thespruceeats.com/thmb/QTJy9iNgaqCrFagUIAfOEh3pXlk=/fit-in/200x2016/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-aquatru-countertop-filtration-purification-system-tracy-allison-29-cf555c97734044029fbb6bfbc3841325.jpeg) - ![filling tank of aquatru water filter with sink faucet]() ![filling tank of aquatru water filter with sink faucet](https://www.thespruceeats.com/thmb/q-H6yRgq_vKB5k_f82xj5Ljna1c=/fit-in/200x1944/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-aquatru-countertop-filtration-purification-system-tracy-allison-21-1e8df6e2dc894fc481d05dff5d00e2f2.jpeg) - ![water tank of aquatru water filter]() ![water tank of aquatru water filter](https://www.thespruceeats.com/thmb/Y1x1vh83r9GAVbqg5_GgPqRp8t0=/fit-in/200x2640/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-aquatru-countertop-filtration-purification-system-tracy-allison-62-6417086652f94e4eb3edee0771a75b2a.jpeg) - ![aquatru water filter]() ![aquatru water filter](https://www.thespruceeats.com/thmb/fK_BphJ-LzeKanTxXuNKUF45dxM=/fit-in/200x2016/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-aquatru-countertop-filtration-purification-system-tracy-allison-04-cb7985f6ded04175b871fecebfc2dd9c.jpeg) Continue to 5 of 9 below. ## Best With a Removable Pitcher [Bluevua Reverse Osmosis Countertop Water Filter](https://www.amazon.com/Bluevua-RO100ROPOT-Countertop-Purification-Filtration/dp/B09KRDK677?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851) [![Amazon Bluevua-ro100ropot-reverse-osmosis-system-countertop-water-filter]() ![Amazon Bluevua-ro100ropot-reverse-osmosis-system-countertop-water-filter](https://www.thespruceeats.com/thmb/LwFh-z5C9AiuZ9gOJkZ_zn_mJ7w=/fit-in/1500x1000/filters:no_upscale:max_bytes$150000$:strip_icc/bluevua-ro100ropot-reverse-osmosis-system-countertop-water-filter-6bc82533070a4788868e8124f478a370.jpg)](https://www.amazon.com/Bluevua-RO100ROPOT-Countertop-Purification-Filtration/dp/B09KRDK677?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851) Credit: Amazon [\$434 \$299 at Amazon](https://www.amazon.com/Bluevua-RO100ROPOT-Countertop-Purification-Filtration/dp/B09KRDK677?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851) [\$434 at Bluevua.com](https://bluevua.com/products/ropot-countertop-reverse-osmosis-water-system) What We Like - Elegant glass carafe design - Fast filtration time - Adds back essential minerals What We Don’t Like - Not fully NSF-certified The Bluevua Reverse Osmosis Countertop Water Filter combines the simplicity of a water filter pitcher with the power of a multi-stage filtration system. Designed much like a drip coffee maker, it automatically fills its glass carafe with purified water once the filtration process finishes. The carafe is made of durable borosilicate glass, holds up to seven cups, and features easy-to-read measurement markings. The setup for this water filter is simpler than most. Just plug it in, flush the system a few times before first use as the manufacturer recommends, and press the button to start filtering. In testing, we found that it was impressively fast, producing a full pitcher of clean water in less than five minutes. This system uses a four-stage filtration process that includes a reverse osmosis membrane. We found that it produced clean, crisp-tasting water compared to the cloudy tap water poured into the unfiltered side. We also appreciated the optional mineral insert, which restores essential minerals and gives the water a refreshing mineral-water flavor. The stage one, two, and four filters need replacing about once a year, while the stage three filter lasts up to two years. A digital display shows the water quality, pitcher level, and filter life, conveniently alerting you when it’s time to replace each one. SGS has certified these filters to NSF standards 42, 53, and 401, though the system itself is not fully NSF-certified according to the NSF database. Filtration Type: 4-stage reverse osmosis \\| Contaminants Filtered: Chlorides, lead, chlorine, fluoride, heavy metals, mercury, radium, chromium, arsenic, chloramine \\| Retains Minerals: No \\| Certified By: SGS \\| Dimensions: 15 x 10.9 x 14.3 inches - ![bluevua water filter with some packaging still on]() ![bluevua water filter with some packaging still on](https://www.thespruceeats.com/thmb/C0T-xYtEp7GgTIJQpBIFNQfbhRw=/fit-in/1500x2666/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-bluevua-ro100ropot-reverse-osmosis-system-countertop-megan-wood-13-61c9ef4b046847888f2a97e0433d8864.jpeg) Credit: The Spruce Eats - ![digital screen on water filter]() ![digital screen on water filter](https://www.thespruceeats.com/thmb/MmgOcITx9YAKg-QwYccdv1EbcJc=/fit-in/1500x2618/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-bluevua-ro100ropot-reverse-osmosis-system-countertop-megan-wood-16-02b364f8fb6741788bb3024d6bdace2f.jpeg) Credit: The Spruce Eats - ![filter system on countertop water filter]() ![filter system on countertop water filter](https://www.thespruceeats.com/thmb/zE1wbtGxFRwPipU2YsTLqHndOLQ=/fit-in/1500x2666/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-bluevua-ro100ropot-reverse-osmosis-system-countertop-megan-wood-04-abc6d7ba3880405493206edb2918ae90.jpeg) Credit: The Spruce Eats - ![bluevua water filter with some packaging still on]() ![bluevua water filter with some packaging still on](https://www.thespruceeats.com/thmb/J-FDbA1cU0cgQTXWVA-5bbhaLso=/fit-in/200x2666/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-bluevua-ro100ropot-reverse-osmosis-system-countertop-megan-wood-13-61c9ef4b046847888f2a97e0433d8864.jpeg) - ![digital screen on water filter]() ![digital screen on water filter](https://www.thespruceeats.com/thmb/24uxPQoOZ3leVMSq5PUFqAKfsjQ=/fit-in/200x2618/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-bluevua-ro100ropot-reverse-osmosis-system-countertop-megan-wood-16-02b364f8fb6741788bb3024d6bdace2f.jpeg) - ![filter system on countertop water filter]() ![filter system on countertop water filter](https://www.thespruceeats.com/thmb/2UwsGVzVdN9gzU7E4CIyKu1wChg=/fit-in/200x2666/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-bluevua-ro100ropot-reverse-osmosis-system-countertop-megan-wood-04-abc6d7ba3880405493206edb2918ae90.jpeg) ## Best with Presets [Brita Hub Countertop Water Filter](https://www.amazon.com/dp/B0BLHX4JN1?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851) [![Brita Hub Instant Powerful Countertop Water Filtration]() ![Brita Hub Instant Powerful Countertop Water Filtration](https://www.thespruceeats.com/thmb/AzS3mpyiUyJymakM9Z6nvYcA4uQ=/fit-in/1500x1000/filters:no_upscale:max_bytes$150000$:strip_icc/filtration-295a9c62541f4431878ddcf8fe262d56.jpg)](https://www.amazon.com/dp/B0BLHX4JN1?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851) Credit: Amazon [\$195 at Amazon](https://www.amazon.com/dp/B0BLHX4JN1?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851) [\$150 at Target](https://www.target.com/p/brita-hub-instant-powerful-countertop-water-filtration-87340/-/A-88744239) [View on Walmart](https://www.walmart.com/ip/Brita-Hub-12-Cup-Water-Filtrat/2027104605) What We Like - Fast filtration time - Compact and modern aesthetic - Easy to use What We Don’t Like - Loud while running Best known for its classic water filter pitchers, Brita brings the same trusted simplicity to its countertop model. We found that setup was just as easy as it is with its pitchers, with clear instructions right on the machine itself. Simply plug it in, run a few water cycles, and it’s ready to go. In testing, we found that it produced clean, smooth, and refreshing water that tasted noticeably fresher than our tap water. One standout feature of this model is its speed. It filtered water within seconds, going from the unfiltered tank to our glass almost instantly once we pressed the button. Because the stream dispenses quickly, we recommend using a taller glass to avoid splashing. We also liked the sleek, space-saving design, which fits comfortably in smaller kitchens. The filter operates on the louder side while running, but it’s quiet when idle. It only filters room-temperature water, though we found that refrigerating the unfiltered tank before use provides a simple workaround as long as you remember to secure the opening at the bottom first. The Brita Hub includes a digital display that lights up when it’s time to replace the filter, which typically lasts around six months. The system is tested and certified by the WQA to NSF standards 42 and 401 and by the IAPMO to NSF standard 53. Filtration Type: Pressurized carbon block filtration \\| Contaminants Filtered: 70+ contaminants, including chlorine, chloramine, lead, mercury, PFOA/PFOS, and microplastics \\| Retains Minerals: Yes \\| Certified By: WQA to NSF/ANSI 42 and 401; IAPMO to NSF/ANSI 53 \\| Dimensions: 14.4 x 7.5 x 11.4 inches - ![brita water filter on counter]() ![brita water filter on counter](https://www.thespruceeats.com/thmb/tKaThstXSRkjBoJRkoLKpaiuU7o=/fit-in/1500x2616/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-brita-hub-instant-powerful-countertop-filtration-elena-garcia-16-cf925d0b3141418b91cc57eb31ee429e.jpeg) Credit: The Spruce Eats - ![pressing button to dispense water on brita filter]() ![pressing button to dispense water on brita filter](https://www.thespruceeats.com/thmb/nzKBVol4IvMcxMcTXlyu9KDMOVo=/fit-in/1500x2632/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-brita-hub-instant-powerful-countertop-filtration-elena-garcia-10-f1e928ce618a439586a2135ab1fbfbde.jpeg) Credit: The Spruce Eats - ![holding handle of water reservoir for brita countertop water filter]() ![holding handle of water reservoir for brita countertop water filter](https://www.thespruceeats.com/thmb/jVLu57ZHYvmwEegofrx5EipoVrI=/fit-in/1500x2667/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-brita-hub-instant-powerful-countertop-filtration-elena-garcia-18-7c951892626641e086bdd6b8b7a73c5b.jpeg) Credit: The Spruce Eats - ![brita water filter on counter]() ![brita water filter on counter](https://www.thespruceeats.com/thmb/ydsmaE8oPnL9SLHu4FwmO63cjTU=/fit-in/200x2616/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-brita-hub-instant-powerful-countertop-filtration-elena-garcia-16-cf925d0b3141418b91cc57eb31ee429e.jpeg) - ![pressing button to dispense water on brita filter]() ![pressing button to dispense water on brita filter](https://www.thespruceeats.com/thmb/cLm1-0ByQzEkdANAUYsYlprFom8=/fit-in/200x2632/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-brita-hub-instant-powerful-countertop-filtration-elena-garcia-10-f1e928ce618a439586a2135ab1fbfbde.jpeg) - ![holding handle of water reservoir for brita countertop water filter]() ![holding handle of water reservoir for brita countertop water filter](https://www.thespruceeats.com/thmb/FGssm5aCUPP77QkPco7UiTDblKY=/fit-in/200x2667/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-brita-hub-instant-powerful-countertop-filtration-elena-garcia-18-7c951892626641e086bdd6b8b7a73c5b.jpeg) ## Best Design [Boroux Legacy Gravity-Fed Countertop Stainless Steel Water Filter System](https://www.amazon.com/dp/B0DB68DD6Q?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851) [![Boroux Legacy Gravity-Fed Countertop Stainless Steel Water Filter System]() ![Boroux Legacy Gravity-Fed Countertop Stainless Steel Water Filter System](https://www.thespruceeats.com/thmb/BmrZC_eKs72U3JywCmptLJ_Smm8=/fit-in/1500x1000/filters:no_upscale:max_bytes$150000$:strip_icc/boroux-legacy-gravity-fed-countertop-stainless-steel-water-filter-system-e30d89cf13454969991ad3db18fad6f4.jpg)](https://www.amazon.com/dp/B0DB68DD6Q?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851) Credit: Amazon [\$375 at Amazon](https://www.amazon.com/dp/B0DB68DD6Q?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851) [\$375 at Boroux.com](https://boroux.com/products/legacy-water-filter-system) What We Like - Sleek stainless steel design - Noticeably light and clean-tasting water - Multiple matte color options What We Don’t Like - Complex setup and priming The Boroux Legacy Compact Water Filter System blends timeless style with powerful gravity-fed filtration. Similar in concept to the Big Berkey, this system features upper and lower stainless steel chambers and comes in classic silver, matte black, or matte white finishes. During testing, we found the matte stainless look exceptionally sleek, as it fit seamlessly into our kitchen and looked more like decor than a countertop appliance. The system operates with two Foundation filters, with the option to add fluoride filters for extra purification. Simply pour water into the upper chamber and let gravity do the work, slowly filtering it into the lower reservoir, which dispenses through a stainless steel spigot. We appreciated the water-level spigot, which made it easy to tell when to refill. One downside we encountered with this system was the setup. Between reading instructions, watching online tutorials, and priming the filters, it took us nearly two hours to get it up and running. But in the end, we found that the results were worth it. The water tasted smooth and light, with a clean, refreshing finish. The system holds 1.8 gallons and performs best when kept near the sink for easy refills. Filters should be replaced about every 12 months, depending on usage. The Boroux Legacy Compact is WQA-certified to NSF/ANSI/CAN 372 for lead-free compliance and has been independently tested by third-party labs for additional performance claims. Filtration Type: Gravity-fed dual Foundation filters (optional fluoride add-ons) \\| Contaminants Filtered: Third-party tested for 70+ contaminants, including chlorine, chloramine, lead, mercury, and PFAS (PFOA/PFOS) \\| Retains Minerals: Yes \\| Certified By: WQA to NSF/ANSI/CAN 372 (lead-free); additional performance independently tested \\| Dimensions: 17.5 x 8 x 8 inches ## Best Budget [LifeStraw Water Filter Dispenser](https://www.amazon.com/LifeStraw-Dispenser-BPA-Free-parasites-microplastics/dp/B0DGH2GRXX?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851) [![Amazon LifeStraw Home Studio Water Filter Dispenser]() ![Amazon LifeStraw Home Studio Water Filter Dispenser](https://www.thespruceeats.com/thmb/WNDZJhfJiOqLPgkqWZPggtKV-lA=/fit-in/1500x1000/filters:no_upscale:max_bytes$150000$:strip_icc/lifestraw-home-studio-water-filter-dispenser-c1aa5541b2e54a9a92989565a6e1eed3.jpg)](https://www.amazon.com/LifeStraw-Dispenser-BPA-Free-parasites-microplastics/dp/B0DGH2GRXX?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851) Credit: Amazon [\$55 at Amazon](https://www.amazon.com/LifeStraw-Dispenser-BPA-Free-parasites-microplastics/dp/B0DGH2GRXX?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851) [View on Lifestraw.com](https://lifestraw.com/products/lifestraw-home-dispenser-studio) What We Like - Fits easily on small countertops - Stylish color options - Refreshing, clean taste What We Don’t Like - Spigot placement limits positioning The LifeStraw Home Studio Water Filter Dispenser proves that small can still be mighty. Compact enough for most countertops, this model offers clean, great-tasting water in a sleek, modern design available in colors like orchid pink, jade green, and soft neutrals too. Setup is refreshingly simple: rinse the carbon filter, twist it into place, and run a few rinse cycles. The 10-cup dispenser filters a full batch of water in about 10 to 15 minutes, combining a membrane microfilter that lasts roughly one year (264 gallons) with an activated carbon and ion exchange filter that should be replaced every two months (40 gallons). Both filter types are sold separately and install easily with a twist. Overall, we were highly impressed by the fresh, crisp taste of the filtered water, especially given the unit’s minimalist design and easy setup. In testing, we found that the spigot placement at the base made positioning a little tricky. It needs to hang slightly off the edge of the counter or sink to dispense water. However, at just over 10 inches tall and 6.7 inches wide, it can also fit inside a refrigerator if you prefer chilled, filtered water. We also found that filling the upper reservoir about three-quarters full, or roughly seven to eight cups, allowed for the smoothest flow and prevented water from lingering in the top chamber. This dispenser is independently tested to meet NSF/ANSI standards 42 and 53 and is proven to remove bacteria, parasites, microplastics, chlorine, organic chemical matter, and heavy metals like lead, all while retaining healthy minerals. Filtration Type: Membrane microfilter + activated carbon + ion exchange\\| Contaminants Filtered: Bacteria, parasites, microplastics, chlorine, organic chemical matter, and heavy metals including lead \\| Retains Minerals: Yes \\| Certified By: Independently tested to meet NSF/ANSI 42, 53, 401, P473 (PFAS) \\| Dimensions: 10.4 x 6.7 x 8.5 inches ## Final Verdict Overall, we were most impressed by the [Brondell Cypress Three-Stage Countertop Water Filtration System](https://www.amazon.com/Brondell-Cypress-Countertop-Filter-Certified/dp/B00EEDJSES/?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851) for its quick setup and clean, odor-free taste. For fluoride removal, the [AlcaPure Countertop Reverse Osmosis Filter](https://www.amazon.com/dp/B0076CQXAQ?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851) is our top choice for its powerful and efficient filtration system. ## How We Tested Countertop Water Filters We spent more than 1,395 hours testing 11 of the most popular countertop water filters using tap water from New York, San Francisco, Seattle, and several cities in the Midwest and South. Each model was rated on taste, filtration speed, ease of use, design, and overall value to see how it performed in everyday use. Please note that this test focused on aesthetic performance, including taste, smell, and usability, and did not evaluate contaminant removal such as lead, pharmaceuticals, or pesticides. All products included on this list are NSF-certified or certified by a third party to NSF standards. For details, see individual product certifications or verify listings directly with NSF. - Taste and Smell: To start, we sampled unfiltered tap water and compared it to the filtered version from each unit. Our testers noted how effectively the systems removed metallic, sulfur, and chlorine flavors and whether the final result tasted clean, light, and refreshing enough to drink all day. - Ease of Use: We tracked how long it took each filter to process a full batch, how often refills were needed, and how intuitive the installation and operation felt. Filters that were quick to set up, simple to refill, and easy to maintain scored highest for daily convenience. - Design & Value: Our testers assessed each filter’s footprint, build quality, and refill experience, along with how well it fit under a faucet or on a countertop. They also compared overall performance and long-term filter costs to determine which models offered the best balance of design, function, and value. ## What to Look for in a Countertop Water Filter System ### Style Countertop water filters generally come in two styles: faucet diverters and freestanding units. Faucet diverters attach directly to your kitchen faucet using a small connector or hose. Once installed, you can easily switch between unfiltered and filtered water. Setup is usually simple and doesn’t require tools. Freestanding filters, on the other hand, don’t need a faucet connection. You just fill the top reservoir with tap water and let gravity—or in some cases, an electric pump—do the rest. The filtered water collects in a lower chamber or carafe, ready to pour. These tend to take up more counter space, but they’re perfect for renters or anyone who prefers a setup that doesn’t rely on plumbing. If you drink a lot of water or live in a larger household, consider choosing a higher-capacity filter so you’re not constantly refilling throughout the day. ### Purpose Before you buy, think about what you want your water filter to accomplish. If you’re mainly after better-tasting water, a simple single-stage carbon filter will likely do the job by removing chlorine and unpleasant odors. If your area has more serious water quality issues, or you just want the highest level of purification, a system with multiple filtration stages is a better choice. Check your city’s annual water quality report to see what’s in your tap water.[⁶](https://www.epa.gov/DWdata) If you’re on well water, you can order a private test through a state-certified lab to identify potential contaminants. More advanced countertop systems often use a combination of carbon absorption, ion exchange, and reverse osmosis. Together, these target everything from larger sediment particles to microscopic contaminants, giving you the cleanest water possible. ### Filter Life Every countertop water filter needs its filters replaced regularly to maintain performance. The lifespan depends on both the model and how much water you use, but most need replacement roughly every six months. Some filters last longer, (especially reverse osmosis membranes) while others may need changing sooner if your water has more sediment or minerals. Replacement costs also vary, so it’s a good idea to check pricing before committing to a system. Staying consistent with filter changes keeps your water tasting fresh and helps your filter last longer overall. ### Certification Third-party certification is one of the best ways to know that a countertop water filter actually does what it claims. Look for official marks from NSF, ANSI, or the Water Quality Association (WQA). These organizations independently test filters to confirm that they meet safety and performance standards. Be cautious of vague wording. A filter that says it’s “tested to” or “meets” NSF/ANSI standards isn’t necessarily certified. Only filters that have undergone full verification can display the NSF seal.[⁷](https://www.nsf.org/about-nsf/nsf-mark) Double-checking this detail before buying ensures you’re getting a filter that’s been properly evaluated and not just advertised as one. ## FAQs ### What is the best way to filter tap water? The right filtration system depends on your home setup, water usage, and what you’re trying to remove. A countertop water filter is a great middle ground as it filters enough water for daily drinking and cooking without requiring plumbing. If you have the counter space, a faucet diverter system offers extra convenience since it connects directly to your sink, saving you from constant refills. If you prefer flexibility, freestanding filters are easy to move around and don’t need to attach to a faucet. Some even fit inside the fridge if you like your water chilled. Before deciding, it’s ideal to look up your local water quality report (available through your city or county’s utility department) or order a private test. Knowing what’s in your tap water helps you choose a filter that tackles the right contaminants. If a countertop option doesn’t fit your space or routine, consider an under-sink system, pitcher filter, or even a whole-house filter for broader coverage. ### Do countertop water filters remove fluoride? Some countertop filters remove fluoride, but not all of them do. Fluoride reduction typically requires an extra filtration step, usually through a reverse osmosis membrane or activated alumina filter. Always check product specs before buying, since fluoride removal isn’t standard in most carbon-based systems. If reducing fluoride is your priority, reverse osmosis filters remain the most effective choice, though even these can’t eliminate every trace. ### Are there any water filters that can remove all contaminants? “Not all filters remove all contaminants,” says [Rick Andrew](https://wcponline.com/category/writer/rick-andrew/), formerly of NSF International’s Global Water Program. In other words, every filter works a little differently, so it’s important to first understand what’s actually in your water before deciding on a system. You can find this information in your local utility’s annual water quality report, which is available to all residents. If you have well water or think your plumbing could be contributing to contamination, a private lab can test your water in more detail.4 While no home filter removes every possible contaminant, different types are made to tackle specific ones. Activated carbon filters are best for improving taste and reducing chlorine. Ion exchange filters target heavy metals like lead. Reverse osmosis systems remove a wide range of dissolved solids and chemicals, and UV filters are designed to neutralize bacteria and viruses. The key is to choose a filter that addresses your specific water concerns and confirm it’s NSF-certified, which ensures that the performance claims have been independently verified. You can view [NSF's online listings here](https://info.nsf.org/Certified/DWTU/) to see if a specific product is certified. ### How often do you need to change countertop water filters? Most countertop filters last around six months, but that can vary depending on the brand, system type, and how much water you use. Some filters need replacing every few months, while others, especially those with multi-stage or reverse osmosis systems, can last up to a year or even longer. For the best results, follow the manufacturer’s replacement schedule and pay attention to built-in indicators if your system has them. Changing filters on time keeps your water tasting fresh and prevents buildup that could affect performance. ### Do water filters work for well water? Yes, many countertop water filters work just as well with well water as they do with city water. The key is to choose one designed for your specific water quality. Private wells draw water directly from the ground and aren’t federally regulated like municipal systems. This means homeowners are responsible for regular testing and maintenance. For guidance, you can reach out to your state’s Department of Natural Resources or local health department. Well water quality can be affected by natural conditions (like soil composition) or nearby human activity such as farming or construction.5 To stay safe, have your well tested by a [state-certified lab](https://www.epa.gov/dwlabcert/contact-information-certification-programs-and-certified-laboratories-drinking-water) each year for common contaminants like bacteria, nitrates, pesticides, volatile organic compounds (VOCs), and dissolved solids.67 Filters that use UV light, sediment filtration, or reverse osmosis can all help improve well water safety. Watch for changes in taste, odor, or color as these can be early signs that it’s time to retest or replace your filter. ### How do you know if a water filter is counterfeit? Unfortunately, counterfeit filters are fairly common, especially online. According to Rick Andrew of NSF International, price is often the biggest red flag. If the cost seems too good to be true, it probably is. Other signs include packaging that looks overly glossy or cheaply made, certification marks that are tiny or hard to read, and filters that feel unusually light, which can mean they lack the proper filtration materials. When in doubt, buy replacements directly from the manufacturer or an authorized retailer to ensure you’re getting a genuine product. ### What do you need to know about reverse osmosis filters? “Reverse osmosis filters remove a large number of contaminants but are generally more expensive,” explains [Sydney Evans](https://www.ewg.org/), Science Analyst at the Environmental Working Group. Most reverse osmosis (RO) systems use a semi-permeable membrane combined with an activated carbon filter, which helps catch extra impurities and protect the delicate RO membrane. While this process produces exceptionally clean water, Evans says that these systems also tend to waste three to five times more water than they filter. Even so, reverse osmosis filters remain one of the best options for anyone wanting maximum purification, especially for reducing heavy metals, dissolved solids, and chemical pollutants. ## Why Trust the Spruce Eats As someone who has always been particular about the taste of her water, [Cheyenne Elwell](https://www.thespruceeats.com/cheyenne-elwell-4685328), product tester and writer for The Spruce Eats, understands the importance of reliable filtration. After years of preferring bottled spring water, she began using a fridge filter to cut down on plastic waste but has since fallen in love with the pure taste of the Boroux. Cheyenne has personally tested several of the countertop water filters on this list (and some that didn’t make the cut), along with a variety of kitchen and coffee products. She also writes for Business Insider and runs Baked Brewed Beautiful, a site dedicated to coffee, brewing, and sustainable living. ## Sources - [Rick Andrew](https://www.nsf.org/experts/rick-andrew) was the Director of Global Business Development of Water Systems at the [National Science Foundation](https://www.nsf.gov/). He retired in 2023 after 30 years of experience in preserving and maintaining clean drinking water and is responsible for NSF’s global sales and structuring of water-related programs. - [Sydney Evans](https://www.ewg.org/about-us/staff) is a Senior Science Analyst for the Environmental Working Group. Article Sources The Spruce Eats uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Read our [editorial process](https://www.thespruceeats.com/about-us-4776236#toc-editorial-guidelines) to learn more about how we fact-check and keep our content accurate, reliable, and trustworthy. 1. Everett ET. [Fluoride's effects on the formation of teeth and bones, and the influence of genetics](https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3144112/). J Dent Res. 2011;90(5):552-560. doi:10.1177/0022034510384626 2. Prabhakar AR, Raju OS, Kurthukoti AJ, Vishwas TD. [The effect of water purification systems on fluoride content of drinking water](https://pubmed.ncbi.nlm.nih.gov/18408264/). J Indian Soc Pedod Prev Dent. 2008;26(1):6-11. doi:10.4103/0970-4388.40314 3. Greenlee LF, Lawler DF, Freeman BD, Marrot B, Moulin P. [Reverse osmosis desalination: water sources, technology, and today's challenges](https://pubmed.ncbi.nlm.nih.gov/19371922/). Water Res. 2009;43(9):2317-2348. doi:10.1016/j.watres.2009.03.010 4. Centers for Disease Control and Prevention. [How to Read Drinking Water Quality Reports](https://www.cdc.gov/drinking-water/about/how-to-read-drinking-water-quality-reports.html). 5. American National Standards Institute. [Protecting Private Drinking Water Wells: A Brief Guide](https://blog.ansi.org/protecting-private-drinking-water-wells-guide/). 6. The United States Environmental Protection Agency. [National Primary Drinking Water Regulations](https://nepis.epa.gov/Exe/ZyNET.exe/P1005EJT.TXT?ZyActionD=ZyDocument&Client=EPA&Index=2006+Thru+2010&Docs=&Query=&Time=&EndTime=&SearchMethod=1&TocRestrict=n&Toc=&TocEntry=&QField=&QFieldYear=&QFieldMonth=&QFieldDay=&IntQFieldOp=0&ExtQFieldOp=0&XmlQuery=&File=D%3A%5Czyfiles%5CIndex%20Data%5C06thru10%5CTxt%5C00000011%5CP1005EJT.txt&User=ANONYMOUS&Password=anonymous&SortMethod=h%7C-&MaximumDocuments=1&FuzzyDegree=0&ImageQuality=r75g8/r75g8/x150y150g16/i425&Display=hpfr&DefSeekPage=x&SearchBack=ZyActionL&Back=ZyActionS&BackDesc=Results%20page&MaximumPages=1&ZyEntry=1&SeekPage=x&ZyPURL). 7. United States Environmental Protection Agency. [Protect Your Home's Water](https://www.epa.gov/privatewells/protect-your-homes-water). 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Myrecipes Dialog
Readable Markdown	What We Like - Compact and sleek design - Easy setup - Fast, clean-tasting results - Tank-free, direct faucet connection What We Don’t Like - Not compatible with all faucets The Brondell Countertop Water Filtration System is one of those rare finds that blends power with convenience. We found that this countertop water filter delivers crisp, odor-free water while taking up surprisingly little space on the counter. The Brondell Cypress has been independently tested and certified by the [Water Quality Association (WQA)](https://wqa.org/grow/product-certification/) to meet NSF/ANSI standards 42, 53, and 372, and it uses a patented three-stage Nanotrap filtration system with carbon block technology to capture a wide range of impurities, including bacteria, viruses, [VOCs](https://www.epa.gov/indoor-air-quality-iaq/what-are-volatile-organic-compounds-vocs), and other harmful chemicals. During testing, we were impressed by how easy it is to set up. For most standard faucets, installation only required attaching the provided adaptor and tightening it into place, which took around 10 minutes. For those with nonstandard faucets, there’s an optional under-counter connection available for purchase. When we tried that method, it took closer to 30 minutes to hook up to the main cold water line and install the T-valve. Once connected, the system dispensed fresh, clean water instantly with no waiting required. One thing to note: The Brondell Cypress may not be compatible with pull-down or pull-out faucets, so check your fixture style before purchasing. The filter trio includes a composite plus filter, a Nanotrap filter, and a carbon block filter. The first and third stages need to be replaced every six months, while the Nanotrap filter lasts about a year. Even with this multi-layer system, the Brondell takes up minimal counter space at just 3.75 x 10.5 x 13.5 inches. Between its sleek design and standout performance, it’s a reliable pick for anyone who wants cleaner, better-tasting water without the installation headaches of a built-in system. Filtration Type: 3-stage carbon and Nanotrap filtration \\| Contaminants Filtered: Chlorine, heavy metals, lead, PFOA, PFOS, VOCs, and other impurities \\| Retains Minerals: Yes \\| Certified By: WQA Gold Seal to NSF/ANSI 42, 53, 401, and 372 \\| Dimensions: 10.5 x 13.5 x 3.75 inches - ![water filter from side, on counter next to sink](https://www.thespruceeats.com/thmb/22SMQroXpePoe2u-wBQJYYyCifc=/fit-in/1500x2616/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-brondell-cypress-countertop-system-diana-weesner-18-313827fec2de443bad1a72276de1995f.jpeg) Credit: The Spruce Eats - ![pressing button on top of water filter](https://www.thespruceeats.com/thmb/wDEN54Ma9XY42mZGIocvsIGtmfM=/fit-in/1500x2632/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-brondell-cypress-countertop-system-diana-weesner-12-c15d2c05a07741d599433d898699da76.jpeg) Credit: The Spruce Eats - ![water filter box](https://www.thespruceeats.com/thmb/YVSjSWg3JZx8Rn03q16Zcu2QWVs=/fit-in/1500x2632/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-brondell-cypress-countertop-system-diana-weesner-21-c330ea13bc3a4881b3fa7e8f5b5a3892.jpeg) Credit: The Spruce Eats - ![water filter from side, on counter next to sink](https://www.thespruceeats.com/thmb/-AjwSSJilQfZ-77ry6PgCYeqoPI=/fit-in/200x2616/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-brondell-cypress-countertop-system-diana-weesner-18-313827fec2de443bad1a72276de1995f.jpeg) - ![pressing button on top of water filter](https://www.thespruceeats.com/thmb/DNOGtJWNQCHTJxUMutwDJAniy2o=/fit-in/200x2632/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-brondell-cypress-countertop-system-diana-weesner-12-c15d2c05a07741d599433d898699da76.jpeg) - ![water filter box](https://www.thespruceeats.com/thmb/S7knYlnkUtFrWtUYhnIKG30Va20=/fit-in/200x2632/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-brondell-cypress-countertop-system-diana-weesner-21-c330ea13bc3a4881b3fa7e8f5b5a3892.jpeg) What We Like - Removes fluoride and other common contaminants - Smooth, refreshing water - Reverse osmosis system What We Don’t Like - Larger countertop footprint - Filters water slowly For those focused on fluoride removal, the AlcaPure Countertop Reverse Osmosis Filter proved to be one of the strongest performers we tested. With growing concern that excessive fluoride may cause issues such as tooth discoloration and bone weakness, this model is designed to help address that by removing up to 95 percent of fluoride and as much as 99 percent of other contaminants.12 Setup is simple since it’s a countertop model that doesn’t need plumbing: Just plug it in and pour water into the front drawer. During testing, we found it removed all traces of any chlorine odor as well as the faint metallic taste from our city tap water. The resulting water tasted light, crisp, and noticeably cleaner. We did notice that the water filtering process does take some patience. It takes roughly 15 minutes to produce a half-gallon of clean water, so you’ll likely find yourself refilling the unfiltered water drawer throughout the day. The device’s reverse osmosis membrane and filters have been certified by the [International Association of Plumbing & Mechanical Officials](https://www.iapmo.org/) (IAPMO) to NSF standards 42 and 58, but the unit itself is not fully NSF-certified according to the NSF database. The membrane should be replaced every two years, while the other three filters last about a year.3 A built-in LED display conveniently signals when it’s time for replacements, taking the guesswork out of maintenance. While the AlcaPure sits on the higher end of the price range and is a bit larger than some of the competition (9.5 x 14.5 x 16.25 inches), its impressive performance, polished design, and highly effective fluoride reduction make it well worth the investment. Filtration Type: Reverse osmosis \\| Contaminants Filtered: Chlorine, industrial chemicals, pesticides, herbicides, turbidity, VOCs, microorganisms \\| Retains Minerals: No \\| Certified By: IAPMO \\| Dimensions: 9\.5 x 14.5 x 16.25 inches - ![alcapure countertop water filter on floor](https://www.thespruceeats.com/thmb/mt5Sqa2APuh2mLvFTD-80mRZn8s=/fit-in/1500x2667/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-rkin-alcapure-reverse-osmosis-countertop-jennifer-may-09-26b09fdc62154504a90da2a0e532e8f7.jpeg) Credit: The Spruce Eats - ![countertop water filter on counter, plugged in with orange lights on](https://www.thespruceeats.com/thmb/ttEZy3PP94f_fuhgB5deAePpfkU=/fit-in/1500x2624/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-rkin-alcapure-reverse-osmosis-countertop-jennifer-may-01-ef4645f8ebcb47988b6167166ad51708.jpeg) Credit: The Spruce Eats - ![countertop water filter water tank aerial view](https://www.thespruceeats.com/thmb/6r6NyuawNRfJKxQxMTZz068f6nQ=/fit-in/1500x2656/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-rkin-alcapure-reverse-osmosis-countertop-jennifer-may-26-cddb240f1c5f41fd9a75b2b492f50bd4.jpeg) Credit: The Spruce Eats - ![alcapure countertop water filter on floor](https://www.thespruceeats.com/thmb/GXi4I8Y_tQ8SDjXnNkHIYnAOx54=/fit-in/200x2667/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-rkin-alcapure-reverse-osmosis-countertop-jennifer-may-09-26b09fdc62154504a90da2a0e532e8f7.jpeg) - ![countertop water filter on counter, plugged in with orange lights on](https://www.thespruceeats.com/thmb/MMpqx4xh_JChOi39jJrFQ-zk2y4=/fit-in/200x2624/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-rkin-alcapure-reverse-osmosis-countertop-jennifer-may-01-ef4645f8ebcb47988b6167166ad51708.jpeg) - ![countertop water filter water tank aerial view](https://www.thespruceeats.com/thmb/-TsPGnl33bRKHuuyRA4SRp9Nx3s=/fit-in/200x2656/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-rkin-alcapure-reverse-osmosis-countertop-jennifer-may-26-cddb240f1c5f41fd9a75b2b492f50bd4.jpeg) What We Like - Fast filtration time - Quiet-powered filtration - Keeps essential minerals What We Don’t Like - Needs an outlet nearby If you’re looking for a fast, compact, and reliable countertop filter, the Aquasana Clean Water Machine hits all the right notes. This countertop water filter measures on the smaller side at just 9.7 x 8 x 11.6 inches, making it easy to find a countertop spot for it under a cabinet. You’ll also need to place it near an outlet since that’s part of the magic. This filter uses powered filtration rather than gravity. That design allows you to access filtered water much faster than with most systems. In testing, we found that it only took 15 seconds to filter 16 ounces of water. We did notice a small issue when filling a gallon container, as the dispenser sits only a few inches from the filter housing, leaving limited clearance and some minor splashing. The filter is easy to operate by simply pressing the rapid-release button to start and tapping it again to stop. We were impressed that this single activated carbon filter cleared up the cloudy appearance of our tap water and removed both metallic and chlorine odors and aftertaste. To boot, this model doesn’t remove beneficial minerals such as calcium, magnesium, and potassium. Tested and certified by the WQA, this filter meets NSF standards 42, 53, and 401. Setup took us about 10 minutes, including flushing the system as the company recommends when replacing the filter. Each filter lasts around six months, and a built-in indicator light lets you know when it’s time for a replacement. The filters are conveniently sold in two-packs for a full year of clean water. Filtration Type: Carbon filtration, ion exchange, and sub-micron mechanical filtration \\| Contaminants Filtered: Removes 78 contaminants, including chlorine, chloramine, lead, VOCs, asbestos, turbidity, mercury, cysts, PFOA/PFOS, herbicides, pesticides, pharmaceuticals, and microplastics \\| Retains Minerals: Yes \\| Certified By: WQA \\| Dimensions: 9\.7 x 8 x 11.6 inches - ![aquasana water filter aerial view](https://www.thespruceeats.com/thmb/HQrOoleYTY2fSVIPfv-4Bq3j5qk=/fit-in/1500x2662/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-aquasana-clean-machine-michael-navarro-15-8e466d6f20594584a529f423ba97e952.jpeg) Credit: The Spruce Eats - ![aquasana water filter from side, showing mug filled with water](https://www.thespruceeats.com/thmb/IPY4EsooIiuRj0VdQIbMyJKo80M=/fit-in/1500x2632/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-aquasana-clean-machine-michael-navarro-14-2aac3d2b9d5444acb924b3aafdea8770.jpeg) Credit: The Spruce Eats - ![aquasana water filter water reservoir](https://www.thespruceeats.com/thmb/o7aUFvHugw3Ad9ZeLzaM3_zTLIg=/fit-in/1500x2624/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-aquasana-clean-machine-michael-navarro-16-6e2915e88242485894110c536369569a.jpeg) Credit: The Spruce Eats - ![aquasana water filter aerial view](https://www.thespruceeats.com/thmb/vZn1StG1q5ZprrmTfnLB9d3wyWc=/fit-in/200x2662/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-aquasana-clean-machine-michael-navarro-15-8e466d6f20594584a529f423ba97e952.jpeg) - ![aquasana water filter from side, showing mug filled with water](https://www.thespruceeats.com/thmb/pw71dGMNYywX_bkBJ3hmRdLP-10=/fit-in/200x2632/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-aquasana-clean-machine-michael-navarro-14-2aac3d2b9d5444acb924b3aafdea8770.jpeg) - ![aquasana water filter water reservoir](https://www.thespruceeats.com/thmb/53kKGrtg0k4qnyXKf4OEbRIhNHM=/fit-in/200x2624/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-aquasana-clean-machine-michael-navarro-16-6e2915e88242485894110c536369569a.jpeg) What We Like - Two-gallon capacity - Long-lasting filters - Sleek, durable stainless steel design - No power or plumbing required What We Don’t Like - Large size needs dedicated counter space The Big Berkey Water Filter offers a high-capacity system that holds more than two gallons of water, making it ideal for households of two to four. While it does take up a fair amount of vertical height (21 inches high), the trade-off is fewer refills and consistently great-tasting water. This model uses a pair of Black Berkey filter elements, each rated to purify up to 6,000 gallons of water. How long that lasts depends on daily use. A family filtering about two gallons per day could see the filters last as long as eight years, though heavier use will shorten their lifespan. When the flow rate slows or you hit capacity, the filters can be cleaned or replaced. You can also install additional filters to increase the flow rate or double the filtration capacity. For those who need added purification, a separate pair of fluoride and arsenic filters is available. The system doesn’t require electricity or a faucet connection, though it does benefit from regular monitoring for best performance. The filters were tested and certified by Los Angeles County and independent labs to NSF standards 53 and 42. In testing, we found that the Big Berkey removed the metallic smell and taste from our tap water, replacing it with a clean, mineral-like finish that felt smooth and refreshing. The stainless steel build gives it a polished, modern look that feels like a more elevated version of a standard water cooler. Because it’s gravity-fed, filtration takes about one hour per gallon. Water is dispensed by pressing the lever at the base, which releases a steady stream from the spigot. We found it most convenient to keep the system near the sink for easy refills. Please note that Big Berkey does not warranty products purchased through Amazon. The [company states](https://berkeyfilterwater.com/contact/https-berkeyfilterwater-com-contact-shipping-returns/): “We routinely receive requests for assistance/support from Amazon purchases, and most times are unfortunately unable to provide service support. As a result, and due to the inability of Amazon to assist in policing and removing fraudulent/imitation Berkey products, we do not recommend purchasing through Amazon.” Filtration Type: Carbon filtration and ion exchange with optional post-filtration fluoride filters \\| Contaminants Filtered: Heavy metals, VOCs, nitrates, radon 222, trihalomethanes, chromium, herbicides, pesticides, organic solvents, others \\| Retains Minerals: Yes \\| Certified By: Los Angeles County and independent labs \\| Dimensions: 21 x 8.5 x 8.5 inches - ![big berkey water filter on counter next to lots of citrus fruits, apples, avocados, and bananas](https://www.thespruceeats.com/thmb/aLj4wpWcp9_mqHyB5Tq_U9eyRKM=/fit-in/1500x2667/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-big-berkey-kim-souza-21-bbdc10a9f63f4b1686137d1dd2f05d5d.jpeg) Credit: The Spruce Eats - ![sink filling big berkey water filter](https://www.thespruceeats.com/thmb/XuLiP5m28TyqF28zoyz5luJ6cyA=/fit-in/1500x2665/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-big-berkey-kim-souza-01-62619ebe74a8402fa61f258b9b1a5593.jpeg) Credit: The Spruce Eats - ![all parts of big berkey water filter before putting together](https://www.thespruceeats.com/thmb/4pBVG9lob5ccL5iEaHLgz28b4Og=/fit-in/1500x2624/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-big-berkey-kim-souza-33-48823dbdbd5c4df59207dfd210b1dcea.jpeg) Credit: The Spruce Eats - ![big berkey water filter on counter next to lots of citrus fruits, apples, avocados, and bananas](https://www.thespruceeats.com/thmb/QWVPgZJtyVIxtobwP0m0bF4lSaY=/fit-in/200x2667/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-big-berkey-kim-souza-21-bbdc10a9f63f4b1686137d1dd2f05d5d.jpeg) - ![sink filling big berkey water filter](https://www.thespruceeats.com/thmb/S_-nR_MAv5Gva3w6Cu-O86FBRQI=/fit-in/200x2665/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-big-berkey-kim-souza-01-62619ebe74a8402fa61f258b9b1a5593.jpeg) - ![all parts of big berkey water filter before putting together](https://www.thespruceeats.com/thmb/6HHmHBAFK6qlZwNX26cnRNBw7CA=/fit-in/200x2624/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-big-berkey-kim-souza-33-48823dbdbd5c4df59207dfd210b1dcea.jpeg) What We Like - Removes over 80 contaminants - Produces exceptionally pure water - Easy-to-read digital display What We Don’t Like - Must hold button to pour Reverse osmosis works by pushing water through a semipermeable membrane that captures some of the smallest contaminants, even those on a molecular level. This process removes substances like salt, dirt, and other particulates that most standard filters cannot touch, producing an exceptionally pure taste and clear water. The AquaTru Countertop Reverse Osmosis Filter uses a four-stage filtration system, including a reverse osmosis membrane, to transform tap water into clean, great-tasting drinking water. To use, simply fill the one-gallon tank, and the system converts it into about three quarts of filtered water. During testing, we found that it completely transformed our cloudy, funky-tasting tap water into crystal-clear, odor-free water with no perceptible aftertaste. Setup required a few components, but the helpful instructional videos made the process easy to follow. To dispense water, press and hold the button, then release when your glass is full. We did notice slight dripping after releasing the button and found it mildly inconvenient to have to hold it down, but its sleek, modern design more than made up for that small drawback. It is also reasonably compact but does require an outlet for operation. The AquaTru includes a digital display that shows when it is time to replace the filters. The reverse osmosis filter lasts around two years, while the pre/carbon filter lasts six months and the carbon VOC filter lasts up to one year. Replacements are sold as a three-piece set. This system has been tested and certified by the IAPMO to meet NSF standards 42, 53, 58, 401, and P473, and the filters remove 83 contaminants, including lead, arsenic, fluoride, chlorine, and nitrates. Filtration Type: 4-stage reverse osmosis \\| Contaminants Filtered: Removes 83 contaminants, including lead, arsenic, PFAs, fluoride, chlorine, and nitrates \\| Retains Minerals: No \\| Certified By: Tested and certified by IAPMO to meet NSF/ANSI standards 41, 53, 58, 401 \\| Dimensions: 14 x 14 x 12 inches - ![digital interface for aquatru water filter](https://www.thespruceeats.com/thmb/jC6iTZHRkL70O3J0wJK1UG0Yu_Y=/fit-in/1500x2016/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-aquatru-countertop-filtration-purification-system-tracy-allison-29-cf555c97734044029fbb6bfbc3841325.jpeg) Credit: The Spruce Eats - ![filling tank of aquatru water filter with sink faucet](https://www.thespruceeats.com/thmb/0z1ZItxxYJ9LqfVcAT96oBIVUaw=/fit-in/1500x1944/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-aquatru-countertop-filtration-purification-system-tracy-allison-21-1e8df6e2dc894fc481d05dff5d00e2f2.jpeg) Credit: The Spruce Eats - ![water tank of aquatru water filter](https://www.thespruceeats.com/thmb/XNESYCAX8k-jfRFy6DzBSJCZ3EI=/fit-in/1500x2640/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-aquatru-countertop-filtration-purification-system-tracy-allison-62-6417086652f94e4eb3edee0771a75b2a.jpeg) Credit: The Spruce Eats - ![aquatru water filter](https://www.thespruceeats.com/thmb/Tomb68uVxKkR58QSuqEatu5XGcE=/fit-in/1500x2016/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-aquatru-countertop-filtration-purification-system-tracy-allison-04-cb7985f6ded04175b871fecebfc2dd9c.jpeg) Credit: The Spruce Eats - ![digital interface for aquatru water filter](https://www.thespruceeats.com/thmb/QTJy9iNgaqCrFagUIAfOEh3pXlk=/fit-in/200x2016/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-aquatru-countertop-filtration-purification-system-tracy-allison-29-cf555c97734044029fbb6bfbc3841325.jpeg) - ![filling tank of aquatru water filter with sink faucet](https://www.thespruceeats.com/thmb/q-H6yRgq_vKB5k_f82xj5Ljna1c=/fit-in/200x1944/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-aquatru-countertop-filtration-purification-system-tracy-allison-21-1e8df6e2dc894fc481d05dff5d00e2f2.jpeg) - ![water tank of aquatru water filter](https://www.thespruceeats.com/thmb/Y1x1vh83r9GAVbqg5_GgPqRp8t0=/fit-in/200x2640/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-aquatru-countertop-filtration-purification-system-tracy-allison-62-6417086652f94e4eb3edee0771a75b2a.jpeg) - ![aquatru water filter](https://www.thespruceeats.com/thmb/fK_BphJ-LzeKanTxXuNKUF45dxM=/fit-in/200x2016/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-aquatru-countertop-filtration-purification-system-tracy-allison-04-cb7985f6ded04175b871fecebfc2dd9c.jpeg) Continue to 5 of 9 below. What We Like - Elegant glass carafe design - Fast filtration time - Adds back essential minerals What We Don’t Like - Not fully NSF-certified The Bluevua Reverse Osmosis Countertop Water Filter combines the simplicity of a water filter pitcher with the power of a multi-stage filtration system. Designed much like a drip coffee maker, it automatically fills its glass carafe with purified water once the filtration process finishes. The carafe is made of durable borosilicate glass, holds up to seven cups, and features easy-to-read measurement markings. The setup for this water filter is simpler than most. Just plug it in, flush the system a few times before first use as the manufacturer recommends, and press the button to start filtering. In testing, we found that it was impressively fast, producing a full pitcher of clean water in less than five minutes. This system uses a four-stage filtration process that includes a reverse osmosis membrane. We found that it produced clean, crisp-tasting water compared to the cloudy tap water poured into the unfiltered side. We also appreciated the optional mineral insert, which restores essential minerals and gives the water a refreshing mineral-water flavor. The stage one, two, and four filters need replacing about once a year, while the stage three filter lasts up to two years. A digital display shows the water quality, pitcher level, and filter life, conveniently alerting you when it’s time to replace each one. SGS has certified these filters to NSF standards 42, 53, and 401, though the system itself is not fully NSF-certified according to the NSF database. Filtration Type: 4-stage reverse osmosis \\| Contaminants Filtered: Chlorides, lead, chlorine, fluoride, heavy metals, mercury, radium, chromium, arsenic, chloramine \\| Retains Minerals: No \\| Certified By: SGS \\| Dimensions: 15 x 10.9 x 14.3 inches - ![bluevua water filter with some packaging still on](https://www.thespruceeats.com/thmb/C0T-xYtEp7GgTIJQpBIFNQfbhRw=/fit-in/1500x2666/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-bluevua-ro100ropot-reverse-osmosis-system-countertop-megan-wood-13-61c9ef4b046847888f2a97e0433d8864.jpeg) Credit: The Spruce Eats - ![digital screen on water filter](https://www.thespruceeats.com/thmb/MmgOcITx9YAKg-QwYccdv1EbcJc=/fit-in/1500x2618/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-bluevua-ro100ropot-reverse-osmosis-system-countertop-megan-wood-16-02b364f8fb6741788bb3024d6bdace2f.jpeg) Credit: The Spruce Eats - ![filter system on countertop water filter](https://www.thespruceeats.com/thmb/zE1wbtGxFRwPipU2YsTLqHndOLQ=/fit-in/1500x2666/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-bluevua-ro100ropot-reverse-osmosis-system-countertop-megan-wood-04-abc6d7ba3880405493206edb2918ae90.jpeg) Credit: The Spruce Eats - ![bluevua water filter with some packaging still on](https://www.thespruceeats.com/thmb/J-FDbA1cU0cgQTXWVA-5bbhaLso=/fit-in/200x2666/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-bluevua-ro100ropot-reverse-osmosis-system-countertop-megan-wood-13-61c9ef4b046847888f2a97e0433d8864.jpeg) - ![digital screen on water filter](https://www.thespruceeats.com/thmb/24uxPQoOZ3leVMSq5PUFqAKfsjQ=/fit-in/200x2618/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-bluevua-ro100ropot-reverse-osmosis-system-countertop-megan-wood-16-02b364f8fb6741788bb3024d6bdace2f.jpeg) - ![filter system on countertop water filter](https://www.thespruceeats.com/thmb/2UwsGVzVdN9gzU7E4CIyKu1wChg=/fit-in/200x2666/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-bluevua-ro100ropot-reverse-osmosis-system-countertop-megan-wood-04-abc6d7ba3880405493206edb2918ae90.jpeg) What We Like - Fast filtration time - Compact and modern aesthetic - Easy to use What We Don’t Like - Loud while running Best known for its classic water filter pitchers, Brita brings the same trusted simplicity to its countertop model. We found that setup was just as easy as it is with its pitchers, with clear instructions right on the machine itself. Simply plug it in, run a few water cycles, and it’s ready to go. In testing, we found that it produced clean, smooth, and refreshing water that tasted noticeably fresher than our tap water. One standout feature of this model is its speed. It filtered water within seconds, going from the unfiltered tank to our glass almost instantly once we pressed the button. Because the stream dispenses quickly, we recommend using a taller glass to avoid splashing. We also liked the sleek, space-saving design, which fits comfortably in smaller kitchens. The filter operates on the louder side while running, but it’s quiet when idle. It only filters room-temperature water, though we found that refrigerating the unfiltered tank before use provides a simple workaround as long as you remember to secure the opening at the bottom first. The Brita Hub includes a digital display that lights up when it’s time to replace the filter, which typically lasts around six months. The system is tested and certified by the WQA to NSF standards 42 and 401 and by the IAPMO to NSF standard 53. Filtration Type: Pressurized carbon block filtration \\| Contaminants Filtered: 70+ contaminants, including chlorine, chloramine, lead, mercury, PFOA/PFOS, and microplastics \\| Retains Minerals: Yes \\| Certified By: WQA to NSF/ANSI 42 and 401; IAPMO to NSF/ANSI 53 \\| Dimensions: 14.4 x 7.5 x 11.4 inches - ![brita water filter on counter](https://www.thespruceeats.com/thmb/tKaThstXSRkjBoJRkoLKpaiuU7o=/fit-in/1500x2616/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-brita-hub-instant-powerful-countertop-filtration-elena-garcia-16-cf925d0b3141418b91cc57eb31ee429e.jpeg) Credit: The Spruce Eats - ![pressing button to dispense water on brita filter](https://www.thespruceeats.com/thmb/nzKBVol4IvMcxMcTXlyu9KDMOVo=/fit-in/1500x2632/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-brita-hub-instant-powerful-countertop-filtration-elena-garcia-10-f1e928ce618a439586a2135ab1fbfbde.jpeg) Credit: The Spruce Eats - ![holding handle of water reservoir for brita countertop water filter](https://www.thespruceeats.com/thmb/jVLu57ZHYvmwEegofrx5EipoVrI=/fit-in/1500x2667/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-brita-hub-instant-powerful-countertop-filtration-elena-garcia-18-7c951892626641e086bdd6b8b7a73c5b.jpeg) Credit: The Spruce Eats - ![brita water filter on counter](https://www.thespruceeats.com/thmb/ydsmaE8oPnL9SLHu4FwmO63cjTU=/fit-in/200x2616/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-brita-hub-instant-powerful-countertop-filtration-elena-garcia-16-cf925d0b3141418b91cc57eb31ee429e.jpeg) - ![pressing button to dispense water on brita filter](https://www.thespruceeats.com/thmb/cLm1-0ByQzEkdANAUYsYlprFom8=/fit-in/200x2632/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-brita-hub-instant-powerful-countertop-filtration-elena-garcia-10-f1e928ce618a439586a2135ab1fbfbde.jpeg) - ![holding handle of water reservoir for brita countertop water filter](https://www.thespruceeats.com/thmb/FGssm5aCUPP77QkPco7UiTDblKY=/fit-in/200x2667/filters:no_upscale:max_bytes$150000$:strip_icc/ses-water-filters-test-brita-hub-instant-powerful-countertop-filtration-elena-garcia-18-7c951892626641e086bdd6b8b7a73c5b.jpeg) What We Like - Sleek stainless steel design - Noticeably light and clean-tasting water - Multiple matte color options What We Don’t Like - Complex setup and priming The Boroux Legacy Compact Water Filter System blends timeless style with powerful gravity-fed filtration. Similar in concept to the Big Berkey, this system features upper and lower stainless steel chambers and comes in classic silver, matte black, or matte white finishes. During testing, we found the matte stainless look exceptionally sleek, as it fit seamlessly into our kitchen and looked more like decor than a countertop appliance. The system operates with two Foundation filters, with the option to add fluoride filters for extra purification. Simply pour water into the upper chamber and let gravity do the work, slowly filtering it into the lower reservoir, which dispenses through a stainless steel spigot. We appreciated the water-level spigot, which made it easy to tell when to refill. One downside we encountered with this system was the setup. Between reading instructions, watching online tutorials, and priming the filters, it took us nearly two hours to get it up and running. But in the end, we found that the results were worth it. The water tasted smooth and light, with a clean, refreshing finish. The system holds 1.8 gallons and performs best when kept near the sink for easy refills. Filters should be replaced about every 12 months, depending on usage. The Boroux Legacy Compact is WQA-certified to NSF/ANSI/CAN 372 for lead-free compliance and has been independently tested by third-party labs for additional performance claims. Filtration Type: Gravity-fed dual Foundation filters (optional fluoride add-ons) \\| Contaminants Filtered: Third-party tested for 70+ contaminants, including chlorine, chloramine, lead, mercury, and PFAS (PFOA/PFOS) \\| Retains Minerals: Yes \\| Certified By: WQA to NSF/ANSI/CAN 372 (lead-free); additional performance independently tested \\| Dimensions: 17.5 x 8 x 8 inches What We Like - Fits easily on small countertops - Stylish color options - Refreshing, clean taste What We Don’t Like - Spigot placement limits positioning The LifeStraw Home Studio Water Filter Dispenser proves that small can still be mighty. Compact enough for most countertops, this model offers clean, great-tasting water in a sleek, modern design available in colors like orchid pink, jade green, and soft neutrals too. Setup is refreshingly simple: rinse the carbon filter, twist it into place, and run a few rinse cycles. The 10-cup dispenser filters a full batch of water in about 10 to 15 minutes, combining a membrane microfilter that lasts roughly one year (264 gallons) with an activated carbon and ion exchange filter that should be replaced every two months (40 gallons). Both filter types are sold separately and install easily with a twist. Overall, we were highly impressed by the fresh, crisp taste of the filtered water, especially given the unit’s minimalist design and easy setup. In testing, we found that the spigot placement at the base made positioning a little tricky. It needs to hang slightly off the edge of the counter or sink to dispense water. However, at just over 10 inches tall and 6.7 inches wide, it can also fit inside a refrigerator if you prefer chilled, filtered water. We also found that filling the upper reservoir about three-quarters full, or roughly seven to eight cups, allowed for the smoothest flow and prevented water from lingering in the top chamber. This dispenser is independently tested to meet NSF/ANSI standards 42 and 53 and is proven to remove bacteria, parasites, microplastics, chlorine, organic chemical matter, and heavy metals like lead, all while retaining healthy minerals. Filtration Type: Membrane microfilter + activated carbon + ion exchange\\| Contaminants Filtered: Bacteria, parasites, microplastics, chlorine, organic chemical matter, and heavy metals including lead \\| Retains Minerals: Yes \\| Certified By: Independently tested to meet NSF/ANSI 42, 53, 401, P473 (PFAS) \\| Dimensions: 10.4 x 6.7 x 8.5 inches ## Final Verdict Overall, we were most impressed by the [Brondell Cypress Three-Stage Countertop Water Filtration System](https://www.amazon.com/Brondell-Cypress-Countertop-Filter-Certified/dp/B00EEDJSES/?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851) for its quick setup and clean, odor-free taste. For fluoride removal, the [AlcaPure Countertop Reverse Osmosis Filter](https://www.amazon.com/dp/B0076CQXAQ?tag=thespruceeats-onsite-prod-20&ascsubtag=4178851) is our top choice for its powerful and efficient filtration system. ## How We Tested Countertop Water Filters We spent more than 1,395 hours testing 11 of the most popular countertop water filters using tap water from New York, San Francisco, Seattle, and several cities in the Midwest and South. Each model was rated on taste, filtration speed, ease of use, design, and overall value to see how it performed in everyday use. Please note that this test focused on aesthetic performance, including taste, smell, and usability, and did not evaluate contaminant removal such as lead, pharmaceuticals, or pesticides. All products included on this list are NSF-certified or certified by a third party to NSF standards. For details, see individual product certifications or verify listings directly with NSF. - Taste and Smell: To start, we sampled unfiltered tap water and compared it to the filtered version from each unit. Our testers noted how effectively the systems removed metallic, sulfur, and chlorine flavors and whether the final result tasted clean, light, and refreshing enough to drink all day. - Ease of Use: We tracked how long it took each filter to process a full batch, how often refills were needed, and how intuitive the installation and operation felt. Filters that were quick to set up, simple to refill, and easy to maintain scored highest for daily convenience. - Design & Value: Our testers assessed each filter’s footprint, build quality, and refill experience, along with how well it fit under a faucet or on a countertop. They also compared overall performance and long-term filter costs to determine which models offered the best balance of design, function, and value. ## What to Look for in a Countertop Water Filter System ### Style Countertop water filters generally come in two styles: faucet diverters and freestanding units. Faucet diverters attach directly to your kitchen faucet using a small connector or hose. Once installed, you can easily switch between unfiltered and filtered water. Setup is usually simple and doesn’t require tools. Freestanding filters, on the other hand, don’t need a faucet connection. You just fill the top reservoir with tap water and let gravity—or in some cases, an electric pump—do the rest. The filtered water collects in a lower chamber or carafe, ready to pour. These tend to take up more counter space, but they’re perfect for renters or anyone who prefers a setup that doesn’t rely on plumbing. If you drink a lot of water or live in a larger household, consider choosing a higher-capacity filter so you’re not constantly refilling throughout the day. ### Purpose Before you buy, think about what you want your water filter to accomplish. If you’re mainly after better-tasting water, a simple single-stage carbon filter will likely do the job by removing chlorine and unpleasant odors. If your area has more serious water quality issues, or you just want the highest level of purification, a system with multiple filtration stages is a better choice. Check your city’s annual water quality report to see what’s in your tap water.[⁶](https://www.epa.gov/DWdata) If you’re on well water, you can order a private test through a state-certified lab to identify potential contaminants. More advanced countertop systems often use a combination of carbon absorption, ion exchange, and reverse osmosis. Together, these target everything from larger sediment particles to microscopic contaminants, giving you the cleanest water possible. ### Filter Life Every countertop water filter needs its filters replaced regularly to maintain performance. The lifespan depends on both the model and how much water you use, but most need replacement roughly every six months. Some filters last longer, (especially reverse osmosis membranes) while others may need changing sooner if your water has more sediment or minerals. Replacement costs also vary, so it’s a good idea to check pricing before committing to a system. Staying consistent with filter changes keeps your water tasting fresh and helps your filter last longer overall. ### Certification Third-party certification is one of the best ways to know that a countertop water filter actually does what it claims. Look for official marks from NSF, ANSI, or the Water Quality Association (WQA). These organizations independently test filters to confirm that they meet safety and performance standards. Be cautious of vague wording. A filter that says it’s “tested to” or “meets” NSF/ANSI standards isn’t necessarily certified. Only filters that have undergone full verification can display the NSF seal.[⁷](https://www.nsf.org/about-nsf/nsf-mark) Double-checking this detail before buying ensures you’re getting a filter that’s been properly evaluated and not just advertised as one. ## FAQs ### What is the best way to filter tap water? The right filtration system depends on your home setup, water usage, and what you’re trying to remove. A countertop water filter is a great middle ground as it filters enough water for daily drinking and cooking without requiring plumbing. If you have the counter space, a faucet diverter system offers extra convenience since it connects directly to your sink, saving you from constant refills. If you prefer flexibility, freestanding filters are easy to move around and don’t need to attach to a faucet. Some even fit inside the fridge if you like your water chilled. Before deciding, it’s ideal to look up your local water quality report (available through your city or county’s utility department) or order a private test. Knowing what’s in your tap water helps you choose a filter that tackles the right contaminants. If a countertop option doesn’t fit your space or routine, consider an under-sink system, pitcher filter, or even a whole-house filter for broader coverage. ### Do countertop water filters remove fluoride? Some countertop filters remove fluoride, but not all of them do. Fluoride reduction typically requires an extra filtration step, usually through a reverse osmosis membrane or activated alumina filter. Always check product specs before buying, since fluoride removal isn’t standard in most carbon-based systems. If reducing fluoride is your priority, reverse osmosis filters remain the most effective choice, though even these can’t eliminate every trace. ### Are there any water filters that can remove all contaminants? “Not all filters remove all contaminants,” says [Rick Andrew](https://wcponline.com/category/writer/rick-andrew/), formerly of NSF International’s Global Water Program. In other words, every filter works a little differently, so it’s important to first understand what’s actually in your water before deciding on a system. You can find this information in your local utility’s annual water quality report, which is available to all residents. If you have well water or think your plumbing could be contributing to contamination, a private lab can test your water in more detail.4 While no home filter removes every possible contaminant, different types are made to tackle specific ones. Activated carbon filters are best for improving taste and reducing chlorine. Ion exchange filters target heavy metals like lead. Reverse osmosis systems remove a wide range of dissolved solids and chemicals, and UV filters are designed to neutralize bacteria and viruses. The key is to choose a filter that addresses your specific water concerns and confirm it’s NSF-certified, which ensures that the performance claims have been independently verified. You can view [NSF's online listings here](https://info.nsf.org/Certified/DWTU/) to see if a specific product is certified. ### How often do you need to change countertop water filters? Most countertop filters last around six months, but that can vary depending on the brand, system type, and how much water you use. Some filters need replacing every few months, while others, especially those with multi-stage or reverse osmosis systems, can last up to a year or even longer. For the best results, follow the manufacturer’s replacement schedule and pay attention to built-in indicators if your system has them. Changing filters on time keeps your water tasting fresh and prevents buildup that could affect performance. ### Do water filters work for well water? Yes, many countertop water filters work just as well with well water as they do with city water. The key is to choose one designed for your specific water quality. Private wells draw water directly from the ground and aren’t federally regulated like municipal systems. This means homeowners are responsible for regular testing and maintenance. For guidance, you can reach out to your state’s Department of Natural Resources or local health department. Well water quality can be affected by natural conditions (like soil composition) or nearby human activity such as farming or construction.5 To stay safe, have your well tested by a [state-certified lab](https://www.epa.gov/dwlabcert/contact-information-certification-programs-and-certified-laboratories-drinking-water) each year for common contaminants like bacteria, nitrates, pesticides, volatile organic compounds (VOCs), and dissolved solids.67 Filters that use UV light, sediment filtration, or reverse osmosis can all help improve well water safety. Watch for changes in taste, odor, or color as these can be early signs that it’s time to retest or replace your filter. ### How do you know if a water filter is counterfeit? Unfortunately, counterfeit filters are fairly common, especially online. According to Rick Andrew of NSF International, price is often the biggest red flag. If the cost seems too good to be true, it probably is. Other signs include packaging that looks overly glossy or cheaply made, certification marks that are tiny or hard to read, and filters that feel unusually light, which can mean they lack the proper filtration materials. When in doubt, buy replacements directly from the manufacturer or an authorized retailer to ensure you’re getting a genuine product. ### What do you need to know about reverse osmosis filters? “Reverse osmosis filters remove a large number of contaminants but are generally more expensive,” explains [Sydney Evans](https://www.ewg.org/), Science Analyst at the Environmental Working Group. Most reverse osmosis (RO) systems use a semi-permeable membrane combined with an activated carbon filter, which helps catch extra impurities and protect the delicate RO membrane. While this process produces exceptionally clean water, Evans says that these systems also tend to waste three to five times more water than they filter. Even so, reverse osmosis filters remain one of the best options for anyone wanting maximum purification, especially for reducing heavy metals, dissolved solids, and chemical pollutants. ## Why Trust the Spruce Eats As someone who has always been particular about the taste of her water, [Cheyenne Elwell](https://www.thespruceeats.com/cheyenne-elwell-4685328), product tester and writer for The Spruce Eats, understands the importance of reliable filtration. After years of preferring bottled spring water, she began using a fridge filter to cut down on plastic waste but has since fallen in love with the pure taste of the Boroux. Cheyenne has personally tested several of the countertop water filters on this list (and some that didn’t make the cut), along with a variety of kitchen and coffee products. She also writes for Business Insider and runs Baked Brewed Beautiful, a site dedicated to coffee, brewing, and sustainable living. ## Sources - [Rick Andrew](https://www.nsf.org/experts/rick-andrew) was the Director of Global Business Development of Water Systems at the [National Science Foundation](https://www.nsf.gov/). He retired in 2023 after 30 years of experience in preserving and maintaining clean drinking water and is responsible for NSF’s global sales and structuring of water-related programs. - [Sydney Evans](https://www.ewg.org/about-us/staff) is a Senior Science Analyst for the Environmental Working Group.
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