ℹ️ Skipped - page is already crawled
| Filter | Status | Condition | Details |
|---|---|---|---|
| HTTP status | PASS | download_http_code = 200 | HTTP 200 |
| Age cutoff | PASS | download_stamp > now() - 6 MONTH | 0.2 months ago |
| History drop | PASS | isNull(history_drop_reason) | No drop reason |
| Spam/ban | PASS | fh_dont_index != 1 AND ml_spam_score = 0 | ml_spam_score=0 |
| Canonical | PASS | meta_canonical IS NULL OR = '' OR = src_unparsed | Not set |
| Property | Value |
|---|---|
| URL | https://www.wired.com/story/fukushimas-other-big-problem-a-million-tons-of-radioactive-water/ |
| Last Crawled | 2026-04-14 16:45:46 (4 days ago) |
| First Indexed | 2018-04-28 07:50:44 (7 years ago) |
| HTTP Status Code | 200 |
| Meta Title | Fukushima’s Other Big Problem: A Million Tons of Radioactive Water | WIRED |
| Meta Description | More than 1 million tons of radiation-laced water is already being kept on-site in an ever-expanding forest of hundreds of hulking steel tanks. |
| Meta Canonical | null |
| Boilerpipe Text | The tsunami-driven seawater
that engulfed Japan’s Fukushima Daiichi nuclear plant has long since receded. But plant officials are still struggling to cope with another dangerous flood: the enormous amounts of radioactive water the crippled facility generates each day. More than 1 million tons of radiation-laced water is already being kept on-site in an ever-expanding forest of hundreds of hulking steel tanks—and so far, there’s no plan to deal with them.
The earthquake and tsunami that hammered Fukushima on March 11, 2011
triggered meltdowns in three of its six reactors
. That left messes of intensely radioactive fuel somewhere loose in the reactor buildings—though
no one knows exactly where
. What is known, however, is that every day, as much as much as 150 tons of groundwater percolates into the reactors through cracks in their foundations, becoming contaminated with radioactive isotopes in the process.
WIRED's Guide to How the Universe Works
Your weekly roundup of the best stories on health care, the climate crisis, new scientific discoveries, and more.
To keep that water from leaking into the ground or the Pacific,
Tepco
, the giant utility that owns the plant, pumps it out and runs it through a massive filtering system housed in a building the size of a small aircraft hangar. Inside are arrays of seven-foot tall stainless steel tubes, filled with sand grain-like particles that perform a process called ion exchange. The particles grab on to ions of cesium, strontium, and other dangerous isotopes in the water, making room for them by spitting out sodium. The highly toxic sludge created as a byproduct is stored elsewhere on the site in thousands of sealed canisters.
Spencer Lowell
This technology has improved since the catastrophe. The first filtering systems, installed just weeks after the disaster by California-based Kurion Inc. (which has since been bought by Veolia, a French resource management company), only caught cesium, a strong gamma radiation emitter that makes it the most dangerous of the isotopes in the water. The tubes in those arrays were filled with highly modified grains of naturally occurring volcanic minerals called zeolites. By 2013, the company developed entirely artificial particles—a form of titano silicate—that also grab strontium.
The filters, however, don’t catch tritium, a radioactive isotope of hydrogen. That’s a much trickier task. Cesium and strontium atoms go into solution with the water, like sugar in tea; but tritium can bond with oxygen just like regular hydrogen, rendering the water molecules themselves radioactive. “It’s one thing to separate cesium from water, but how do you separate water from water?” asks John Raymont, Kurion’s founder and now president of Veolia’s nuclear solutions group. The company claims to have developed a system that can do the job, but Tepco has so far balked at the multi-billion dollar cost.
So for now, the tritiated water is pumped into a steadily growing collection of tanks. There are already hundreds of them, and Tepco has to start building a new one every four days.
Tepco has at least reduced the water’s inflow. As much as 400 tons per day was gushing in just a couple of years ago. In an effort to keep the groundwater from getting in, Tepco has built a network of pumps, and in 2016 installed an underground “ice wall”—a $300 million subterranean fence of 30-yard-long rods through which tons of sub-zero brine is pumped, freezing the surrounding earth. All of which helps, but hasn’t solved the problem.
Most Popular
Tritium is far less dangerous than cesium—it emits a weaker, lower-energy form of radiation. Still, all that tritiated water can’t just be stored indefinitely. “Some of those tanks and pipes will eventually fail. It’s inevitable,” says Dale Klein, a former head of the US Nuclear Regulatory Commission who has been consulting with Tepco since the early days following the disaster. (In fact, hundreds of tons of water leaked out of the tanks in 2013 and 2014, sparking an international outcry. Tepco has since improved their design.)
Klein, among others, believes that the concentrations of tritium are low enough that the water can safely be released into the sea. “They should dilute and dispose of it,” he says. “It would be better to have a controlled release than an accidental one.”
But the notion of dumping tons of radioactive water into the ocean is understandably a tough sell. Whatever faith the Japanese public had left in Tepco took a further beating in the first couple of years after the meltdowns, when several investigations forced the company to acknowledge they had underreported the amount of radiation released during and after the disaster. Japan’s fishing industry raises a ruckus whenever the idea of dumping the tritiated water is broached; they already have to contend with import restrictions imposed by neighboring countries worried about eating contaminated fish. Japan’s neighbors including China, Korea, and Taiwan have also objected.
For now, all Tepco can do is keep building tanks, and hope that someone comes up with a solution before they run out of room—or the next earthquake hits.
Radioactive Response
Humans still can't locate the hundreds of tons of fuel inside the nuclear reactors that suffered meltdowns in 2011—but
maybe robots can
.
Cancer rates spiked after Fukushima, but
you shouldn't necessarily blame the radiation
.
But nuclear energy still carries major risks:
Do they outweigh the benefits
in a rapidly warming world? |
| Markdown | [Skip to main content](https://www.wired.com/story/fukushimas-other-big-problem-a-million-tons-of-radioactive-water/#main-content)
[SECURITY](https://www.wired.com/category/security/)
[POLITICS](https://www.wired.com/category/politics/)
[THE BIG STORY](https://www.wired.com/category/big-story/)
[BUSINESS](https://www.wired.com/category/business/)
[SCIENCE](https://www.wired.com/category/science/)
[CULTURE](https://www.wired.com/category/culture/)
[REVIEWS](https://www.wired.com/category/gear/)
[SUBSCRIBE](https://www.wired.com/v2/offers/wira01035?source=Site_0_JNY_WIR_DESKTOP_NAV_CTA_0_US_ACQ_NLI_QUICK_PAY_GENERIC_ZZ_PANELA)
[Newsletters](https://www.wired.com/newsletter?sourceCode=hamburgernav)
[SUBSCRIBE](https://www.wired.com/v2/offers/wira01035?source=Site_0_JNY_WIR_DESKTOP_NAV_CTA_0_US_ACQ_NLI_QUICK_PAY_GENERIC_ZZ_PANELA)
[Security](https://www.wired.com/category/security/)
[Politics](https://www.wired.com/category/politics/)
[The Big Story](https://www.wired.com/category/big-story/)
[Business](https://www.wired.com/category/business/)
[Science](https://www.wired.com/category/science/)
[Culture](https://www.wired.com/category/culture/)
[Reviews](https://www.wired.com/category/gear/)
More
[The Big Interview](https://www.wired.com/the-big-interview/)[Magazine](https://www.wired.com/magazine/)[Events](https://www.wired.com/tag/wired-events/)[WIRED Insider](https://www.wired.com/collection/wiredinsider/)[WIRED Consulting](https://www.wired.com/tag/wired-consulting/)
[Newsletters](https://www.wired.com/newsletter?sourceCode=hamburgernav)
[Podcasts](https://www.wired.com/podcasts/)
[Video](https://www.wired.com/video/)
[Livestreams](https://www.wired.com/livestreams)
[Merch](https://shop.wired.com/)
[Search](https://www.wired.com/search/)
[Sign In](https://www.wired.com/auth/initiate?redirectURL=%2Fstory%2Ffukushimas-other-big-problem-a-million-tons-of-radioactive-water%2F&source=VERSO_NAVIGATION)
[START FREE TRIAL](https://www.wired.com/v2/offers/wira01035?source=Site_0_JNY_WIR_DESKTOP_JNY_WIR_GLOBAL_NAV_DRAWER_0_US_ACQ_NLI_QUICK_PAY_GENERIC_ZZ_PANELA)
[](https://www.wired.com/v2/offers/wira01035?source=Site_0_JNY_WIR_DESKTOP_NAV_ROLLOVER_0_US_ACQ_NLI_QUICK_PAY_GENERIC_ZZ_PANELA)
[Sign In](https://www.wired.com/auth/initiate?redirectURL=%2Fstory%2Ffukushimas-other-big-problem-a-million-tons-of-radioactive-water%2F&source=VERSO_NAVIGATION)
The intersection of technology, power, and culture. Start your free trial and get access to **5 all-new premium newsletters.** [START FREE TRIAL](https://www.wired.com/v2/offers/wira01035?source=Site_0_JNY_WIR_DESKTOP_PAYWALL_THIN_METER_ARTICLE_1_0_US_ACQ_NLI_QUICK_PAY_GENERIC_ZZ_PANELA)
[Vince Beiser](https://www.wired.com/author/vince-beiser/)
[Science](https://www.wired.com/category/science)
Apr 27, 2018 7:00 AM
# Fukushima’s Other Big Problem: A Million Tons of Radioactive Water
More than 1 million tons of radiation-laced water is already being kept on-site in an ever-expanding forest of hundreds of hulking steel tanks.

Irradiated tanks of water at Fukushima Daiichi plant.Spencer Lowell
Save this story
Save this story
The tsunami-driven seawater that engulfed Japan’s Fukushima Daiichi nuclear plant has long since receded. But plant officials are still struggling to cope with another dangerous flood: the enormous amounts of radioactive water the crippled facility generates each day. More than 1 million tons of radiation-laced water is already being kept on-site in an ever-expanding forest of hundreds of hulking steel tanks—and so far, there’s no plan to deal with them.
The earthquake and tsunami that hammered Fukushima on March 11, 2011 [triggered meltdowns in three of its six reactors](https://www.wired.com/2011/03/earthquake-tsunami-nuclear-plant/). That left messes of intensely radioactive fuel somewhere loose in the reactor buildings—though [no one knows exactly where](https://www.wired.com/story/fukushima-robot-cleanup/). What is known, however, is that every day, as much as much as 150 tons of groundwater percolates into the reactors through cracks in their foundations, becoming contaminated with radioactive isotopes in the process.
### WIRED's Guide to How the Universe Works
Your weekly roundup of the best stories on health care, the climate crisis, new scientific discoveries, and more.
To keep that water from leaking into the ground or the Pacific, [Tepco](https://www.wired.com/2016/03/cancer-rates-spiked-fukushima-dont-blame-radiation/), the giant utility that owns the plant, pumps it out and runs it through a massive filtering system housed in a building the size of a small aircraft hangar. Inside are arrays of seven-foot tall stainless steel tubes, filled with sand grain-like particles that perform a process called ion exchange. The particles grab on to ions of cesium, strontium, and other dangerous isotopes in the water, making room for them by spitting out sodium. The highly toxic sludge created as a byproduct is stored elsewhere on the site in thousands of sealed canisters.

Spencer Lowell
This technology has improved since the catastrophe. The first filtering systems, installed just weeks after the disaster by California-based Kurion Inc. (which has since been bought by Veolia, a French resource management company), only caught cesium, a strong gamma radiation emitter that makes it the most dangerous of the isotopes in the water. The tubes in those arrays were filled with highly modified grains of naturally occurring volcanic minerals called zeolites. By 2013, the company developed entirely artificial particles—a form of titano silicate—that also grab strontium.
Trending Now
[Meet the Robots on a Quest to Clean Up Fukushima](https://www.wired.com/video/watch/meet-the-robots-on-a-quest-to-clean-up-fukushima)
The filters, however, don’t catch tritium, a radioactive isotope of hydrogen. That’s a much trickier task. Cesium and strontium atoms go into solution with the water, like sugar in tea; but tritium can bond with oxygen just like regular hydrogen, rendering the water molecules themselves radioactive. “It’s one thing to separate cesium from water, but how do you separate water from water?” asks John Raymont, Kurion’s founder and now president of Veolia’s nuclear solutions group. The company claims to have developed a system that can do the job, but Tepco has so far balked at the multi-billion dollar cost.
So for now, the tritiated water is pumped into a steadily growing collection of tanks. There are already hundreds of them, and Tepco has to start building a new one every four days.
Tepco has at least reduced the water’s inflow. As much as 400 tons per day was gushing in just a couple of years ago. In an effort to keep the groundwater from getting in, Tepco has built a network of pumps, and in 2016 installed an underground “ice wall”—a \$300 million subterranean fence of 30-yard-long rods through which tons of sub-zero brine is pumped, freezing the surrounding earth. All of which helps, but hasn’t solved the problem.
Most Popular
- [](https://www.wired.com/story/meta-ray-ban-oakley-smart-glasses-no-face-recognition-civil-society/#intcid=_wired-right-rail_c25ca83b-9f2f-4971-99a2-5a95320e475f_popular4-2)
Artificial Intelligence
[Meta Is Warned That Facial Recognition Glasses Will Arm Sexual Predators](https://www.wired.com/story/meta-ray-ban-oakley-smart-glasses-no-face-recognition-civil-society/#intcid=_wired-right-rail_c25ca83b-9f2f-4971-99a2-5a95320e475f_popular4-2)
By Dell Cameron
- [](https://www.wired.com/story/the-internets-most-powerful-archiving-tool-is-in-mortal-peril/#intcid=_wired-right-rail_c25ca83b-9f2f-4971-99a2-5a95320e475f_popular4-2)
Business
[The Internet's Most Powerful Archiving Tool Is in Peril](https://www.wired.com/story/the-internets-most-powerful-archiving-tool-is-in-mortal-peril/#intcid=_wired-right-rail_c25ca83b-9f2f-4971-99a2-5a95320e475f_popular4-2)
By Kate Knibbs
- [](https://www.wired.com/story/staunch-trump-supporters-are-now-asking-if-hes-the-antichrist/#intcid=_wired-right-rail_c25ca83b-9f2f-4971-99a2-5a95320e475f_popular4-2)
Politics
[Staunch Trump Supporters Are Now Asking if He’s the Antichrist](https://www.wired.com/story/staunch-trump-supporters-are-now-asking-if-hes-the-antichrist/#intcid=_wired-right-rail_c25ca83b-9f2f-4971-99a2-5a95320e475f_popular4-2)
By Makena Kelly
- [](https://www.wired.com/story/why-is-it-so-hard-to-fix-an-electric-bike/#intcid=_wired-right-rail_c25ca83b-9f2f-4971-99a2-5a95320e475f_popular4-2)
Gear
[A Lot of Shops Won't Fix Electric Bikes. Here's Why](https://www.wired.com/story/why-is-it-so-hard-to-fix-an-electric-bike/#intcid=_wired-right-rail_c25ca83b-9f2f-4971-99a2-5a95320e475f_popular4-2)
By Stephanie Pearson
Tritium is far less dangerous than cesium—it emits a weaker, lower-energy form of radiation. Still, all that tritiated water can’t just be stored indefinitely. “Some of those tanks and pipes will eventually fail. It’s inevitable,” says Dale Klein, a former head of the US Nuclear Regulatory Commission who has been consulting with Tepco since the early days following the disaster. (In fact, hundreds of tons of water leaked out of the tanks in 2013 and 2014, sparking an international outcry. Tepco has since improved their design.)
Klein, among others, believes that the concentrations of tritium are low enough that the water can safely be released into the sea. “They should dilute and dispose of it,” he says. “It would be better to have a controlled release than an accidental one.”
But the notion of dumping tons of radioactive water into the ocean is understandably a tough sell. Whatever faith the Japanese public had left in Tepco took a further beating in the first couple of years after the meltdowns, when several investigations forced the company to acknowledge they had underreported the amount of radiation released during and after the disaster. Japan’s fishing industry raises a ruckus whenever the idea of dumping the tritiated water is broached; they already have to contend with import restrictions imposed by neighboring countries worried about eating contaminated fish. Japan’s neighbors including China, Korea, and Taiwan have also objected.
For now, all Tepco can do is keep building tanks, and hope that someone comes up with a solution before they run out of room—or the next earthquake hits.
Radioactive Response
- Humans still can't locate the hundreds of tons of fuel inside the nuclear reactors that suffered meltdowns in 2011—but [maybe robots can](https://www.wired.com/story/fukushima-robot-cleanup/?mbid=BottomRelatedStories).
- Cancer rates spiked after Fukushima, but [you shouldn't necessarily blame the radiation](https://www.wired.com/2016/03/cancer-rates-spiked-fukushima-dont-blame-radiation/?mbid=BottomRelatedStories).
- But nuclear energy still carries major risks: [Do they outweigh the benefits](https://www.wired.com/2016/04/nuclear-power-safe-save-world-climate-change/?mbid=BottomRelatedStories) in a rapidly warming world?
[Vince Beiser](https://www.wired.com/author/vince-beiser/) (@vincebeiser) is the author of The World in a Grain: The Story of Sand and How it Transformed Civilization. His last feature for WIRED was about deep-sea mining. ... [Read More](https://www.wired.com/author/vince-beiser)
Contributor
Topics[tsunami](https://www.wired.com/tag/tsunami/)[radiation](https://www.wired.com/tag/radiation/)
### WIRED's Guide to How the Universe Works
Your weekly roundup of the best stories on health care, the climate crisis, new scientific discoveries, and more.
Read More
[](https://www.wired.com/story/get-ready-for-a-year-of-chaotic-weather-in-the-us/#intcid=_wired-article-bottom-recirc_e163bc59-b70b-4f68-9133-e4e74d40f883_roberta-similarity1)
[Get Ready for a Year of Chaotic Weather in the US](https://www.wired.com/story/get-ready-for-a-year-of-chaotic-weather-in-the-us/#intcid=_wired-article-bottom-recirc_e163bc59-b70b-4f68-9133-e4e74d40f883_roberta-similarity1)
A massive Western heat wave and a potential El Niño event raise concerns about a long stretch of unpredictable and extreme weather.
Molly Taft
[](https://www.wired.com/story/marine-animals-in-the-strait-of-hormuz-dont-get-a-ceasefire/#intcid=_wired-article-bottom-recirc_e163bc59-b70b-4f68-9133-e4e74d40f883_roberta-similarity1)
[Marine Animals in the Strait of Hormuz Don’t Get a Ceasefire](https://www.wired.com/story/marine-animals-in-the-strait-of-hormuz-dont-get-a-ceasefire/#intcid=_wired-article-bottom-recirc_e163bc59-b70b-4f68-9133-e4e74d40f883_roberta-similarity1)
As ships return to the Strait of Hormuz, mines, sonar, and congestion continue to reshape the Gulf beneath the surface.
Evangeline Elsa
[](https://www.wired.com/story/the-trajectory-of-the-artemis-ii-moon-mission-is-a-feat-of-engineering/#intcid=_wired-article-bottom-recirc_e163bc59-b70b-4f68-9133-e4e74d40f883_roberta-similarity1)
[The Trajectory of the Artemis II Moon Mission Is a Feat of Engineering](https://www.wired.com/story/the-trajectory-of-the-artemis-ii-moon-mission-is-a-feat-of-engineering/#intcid=_wired-article-bottom-recirc_e163bc59-b70b-4f68-9133-e4e74d40f883_roberta-similarity1)
The astronauts will arrive about 10,300 kilometers beyond our satellite, breaking all previous records for distance from Earth. But how was their route chosen?
Luca Nardi
[](https://www.wired.com/story/the-us-militarys-gps-software-is-an-8-billion-mess/#intcid=_wired-article-bottom-recirc_e163bc59-b70b-4f68-9133-e4e74d40f883_roberta-similarity1)
[The US Military’s GPS Software Is an \$8 Billion Mess](https://www.wired.com/story/the-us-militarys-gps-software-is-an-8-billion-mess/#intcid=_wired-article-bottom-recirc_e163bc59-b70b-4f68-9133-e4e74d40f883_roberta-similarity1)
The GPS Next-Generation Operational Control System was due for completion in 2016. Ten years later, the software for controlling the military’s GPS satellites still doesn’t work.
Stephen Clark, Ars Technica
[](https://www.wired.com/snake-bros-antivenom-index-zoos-influencers-chris-gifford/#intcid=_wired-article-bottom-recirc_e163bc59-b70b-4f68-9133-e4e74d40f883_roberta-similarity1)
[Snake Bros Keep Getting Bitten by Their Lethal Pets. Only Zoos Can Save Them](https://www.wired.com/snake-bros-antivenom-index-zoos-influencers-chris-gifford/#intcid=_wired-article-bottom-recirc_e163bc59-b70b-4f68-9133-e4e74d40f883_roberta-similarity1)
Your venomous serpent bites you, and the clock is ticking. America’s zookeepers—and a cooler full of rare antivenom—are your best chance of survival.
Claire McNear
[](https://www.wired.com/story/your-vape-wants-to-know-how-old-you-are/#intcid=_wired-article-bottom-recirc_e163bc59-b70b-4f68-9133-e4e74d40f883_roberta-similarity1)
[Your Vape Wants to Know How Old You Are](https://www.wired.com/story/your-vape-wants-to-know-how-old-you-are/#intcid=_wired-article-bottom-recirc_e163bc59-b70b-4f68-9133-e4e74d40f883_roberta-similarity1)
Companies hope that biometric age-verification tech in cartridges could put flavored vapes back in business. But it's unlikely to solve the real problems.
Boone Ashworth
[](https://www.wired.com/story/andurils-real-war-is-with-itself/#intcid=_wired-article-bottom-recirc_e163bc59-b70b-4f68-9133-e4e74d40f883_roberta-similarity1)
[Anduril Wants to Own the Future of War Tech. Mishaps, Delays, and Challenges Abound](https://www.wired.com/story/andurils-real-war-is-with-itself/#intcid=_wired-article-bottom-recirc_e163bc59-b70b-4f68-9133-e4e74d40f883_roberta-similarity1)
From drones to missiles to submarines, the \$30.5 billion defense startup wants to transform how the tools of war are made. It’s not all going as planned.
Paresh Dave
[](https://www.wired.com/story/artemis-ii-everything-we-know-as-orion-approaches-the-far-side-of-the-moon/#intcid=_wired-article-bottom-recirc_e163bc59-b70b-4f68-9133-e4e74d40f883_roberta-similarity1)
[Artemis II: Everything We Know as Its Crew Approaches the Far Side of the Moon](https://www.wired.com/story/artemis-ii-everything-we-know-as-orion-approaches-the-far-side-of-the-moon/#intcid=_wired-article-bottom-recirc_e163bc59-b70b-4f68-9133-e4e74d40f883_roberta-similarity1)
Artemis II remains on course for its lunar flyby as the crew shares historic photos of Earth, tests key systems for future lunar missions, and attempts to fix the toilet.
Javier Carbajal
[](https://www.wired.com/story/senators-demand-to-know-how-much-energy-data-centers-use/#intcid=_wired-article-bottom-recirc_e163bc59-b70b-4f68-9133-e4e74d40f883_roberta-similarity1)
[Senators Demand to Know How Much Energy Data Centers Use](https://www.wired.com/story/senators-demand-to-know-how-much-energy-data-centers-use/#intcid=_wired-article-bottom-recirc_e163bc59-b70b-4f68-9133-e4e74d40f883_roberta-similarity1)
In a letter sent Thursday morning, Elizabeth Warren and Josh Hawley press the Energy Information Agency to mandate annual electricity disclosure for data centers.
Molly Taft
[](https://www.wired.com/story/arms-ceo-insists-the-market-needs-his-new-cpu-it-could-piss-everyone-off/#intcid=_wired-article-bottom-recirc_e163bc59-b70b-4f68-9133-e4e74d40f883_roberta-similarity1)
[Arm’s CEO Insists the Market Needs His New CPU. It Could Piss Everyone Off](https://www.wired.com/story/arms-ceo-insists-the-market-needs-his-new-cpu-it-could-piss-everyone-off/#intcid=_wired-article-bottom-recirc_e163bc59-b70b-4f68-9133-e4e74d40f883_roberta-similarity1)
Arm just confirmed the rumors: It’s producing its own chip for the first time. CEO Rene Haas explains why this won’t alienate the many chipmakers who license the company’s designs.
Lauren Goode
[](https://www.wired.com/story/a-billionaire-backed-startup-wants-to-grow-organ-sacks-to-replace-animal-testing/#intcid=_wired-article-bottom-recirc_e163bc59-b70b-4f68-9133-e4e74d40f883_roberta-similarity1)
[A Billionaire-Backed Startup Wants to Grow 'Organ Sacks' to Replace Animal Testing](https://www.wired.com/story/a-billionaire-backed-startup-wants-to-grow-organ-sacks-to-replace-animal-testing/#intcid=_wired-article-bottom-recirc_e163bc59-b70b-4f68-9133-e4e74d40f883_roberta-similarity1)
R3 Bio has a bold idea for replacing lab animals: genetically-engineered whole organ systems that lack a brain. The long-term goal, says a cofounder, is to make human versions.
Emily Mullin
[](https://www.wired.com/story/livestream-the-war-machine/#intcid=_wired-article-bottom-recirc_e163bc59-b70b-4f68-9133-e4e74d40f883_roberta-similarity1)
[Livestream Replay: The War Machine](https://www.wired.com/story/livestream-the-war-machine/#intcid=_wired-article-bottom-recirc_e163bc59-b70b-4f68-9133-e4e74d40f883_roberta-similarity1)
A panel of WIRED experts dissected the defense tech industry’s impact on modern warfare.
Tim Marchman
[](https://www.wired.com/v2/offers/wira01035?source=Site_0_JNY_WIR_DESKTOP_FOOTER_0_US_ACQ_NLI_QUICK_PAY_GENERIC_ZZ_PANELA)
[](https://www.wired.com/)
WIRED is obsessed with what comes next. Through rigorous investigations and game-changing reporting, we tell stories that don’t just reflect the moment—they help create it. When you look back in 10, 20, even 50 years, WIRED will be the publication that led the story of the present, mapped the people, products, and ideas defining it, and explained how those forces forged the future. WIRED: For Future Reference.
More From WIRED
- [Subscribe](https://www.wired.com/subscribe/)
- [Newsletters](https://www.wired.com/newsletter?sourceCode=HeaderAndFooter)
- [Livestreams](https://www.wired.com/livestreams)
- [Travel](https://www.wired.com/tag/travel/)
- [FAQ](https://www.wired.com/about/faq/)
- [WIRED Staff](https://www.wired.com/about/wired-staff/)
- [WIRED Education](https://www.wirededucation.com/)
- [Editorial Standards](https://www.wired.com/about/wired-on-background-policy/)
- [Archive](https://archive.wired.com/t/storefront/storefront)
- [RSS](https://www.wired.com/about/rss-feeds/)
- [Site Map](https://www.wired.com/sitemap/)
- [Accessibility Help](https://www.wired.com/about/accessibility-help/)
Reviews and Guides
- [Reviews](https://www.wired.com/category/gear/)
- [Buying Guides](https://www.wired.com/category/gear/buying-guides/)
- [Streaming Guides](https://www.wired.com/tag/culture-guides/)
- [Wearables](https://www.wired.com/tag/wearables/)
- [Coupons](https://www.wired.com/tag/coupons/)
- [Gift Guides](https://www.wired.com/tag/gift-guides/)
- [Advertise](https://www.condenast.com/brands/wired)
- [Contact Us](https://www.wired.com/about/feedback/)
- [Manage Account](https://www.wired.com/account/profile)
- [Jobs](https://www.wired.com/about/wired-jobs/)
- [Press Center](https://www.wired.com/about/press/)
- [Condé Nast Store](https://condenaststore.com/)
- [User Agreement](https://www.condenast.com/user-agreement/)
- [Privacy Policy](http://www.condenast.com/privacy-policy#privacypolicy)
- [Your California Privacy Rights](http://www.condenast.com/privacy-policy#privacypolicy-california)
© 2026 Condé Nast. All rights reserved. *WIRED* may earn a portion of sales from products that are purchased through our site as part of our Affiliate Partnerships with retailers. The material on this site may not be reproduced, distributed, transmitted, cached or otherwise used, except with the prior written permission of Condé Nast. [Ad Choices](http://www.aboutads.info/)
###### Select international site
United States
- [Italia](https://www.wired.it/)
- [JapĂłn](https://wired.jp/)
- [Czech Republic & Slovakia](https://www.wired.cz/)
Your Privacy Choices |
| Readable Markdown | The tsunami-driven seawater that engulfed Japan’s Fukushima Daiichi nuclear plant has long since receded. But plant officials are still struggling to cope with another dangerous flood: the enormous amounts of radioactive water the crippled facility generates each day. More than 1 million tons of radiation-laced water is already being kept on-site in an ever-expanding forest of hundreds of hulking steel tanks—and so far, there’s no plan to deal with them.
The earthquake and tsunami that hammered Fukushima on March 11, 2011 [triggered meltdowns in three of its six reactors](https://www.wired.com/2011/03/earthquake-tsunami-nuclear-plant/). That left messes of intensely radioactive fuel somewhere loose in the reactor buildings—though [no one knows exactly where](https://www.wired.com/story/fukushima-robot-cleanup/). What is known, however, is that every day, as much as much as 150 tons of groundwater percolates into the reactors through cracks in their foundations, becoming contaminated with radioactive isotopes in the process.
### WIRED's Guide to How the Universe Works
Your weekly roundup of the best stories on health care, the climate crisis, new scientific discoveries, and more.
To keep that water from leaking into the ground or the Pacific, [Tepco](https://www.wired.com/2016/03/cancer-rates-spiked-fukushima-dont-blame-radiation/), the giant utility that owns the plant, pumps it out and runs it through a massive filtering system housed in a building the size of a small aircraft hangar. Inside are arrays of seven-foot tall stainless steel tubes, filled with sand grain-like particles that perform a process called ion exchange. The particles grab on to ions of cesium, strontium, and other dangerous isotopes in the water, making room for them by spitting out sodium. The highly toxic sludge created as a byproduct is stored elsewhere on the site in thousands of sealed canisters.

Spencer Lowell
This technology has improved since the catastrophe. The first filtering systems, installed just weeks after the disaster by California-based Kurion Inc. (which has since been bought by Veolia, a French resource management company), only caught cesium, a strong gamma radiation emitter that makes it the most dangerous of the isotopes in the water. The tubes in those arrays were filled with highly modified grains of naturally occurring volcanic minerals called zeolites. By 2013, the company developed entirely artificial particles—a form of titano silicate—that also grab strontium.
The filters, however, don’t catch tritium, a radioactive isotope of hydrogen. That’s a much trickier task. Cesium and strontium atoms go into solution with the water, like sugar in tea; but tritium can bond with oxygen just like regular hydrogen, rendering the water molecules themselves radioactive. “It’s one thing to separate cesium from water, but how do you separate water from water?” asks John Raymont, Kurion’s founder and now president of Veolia’s nuclear solutions group. The company claims to have developed a system that can do the job, but Tepco has so far balked at the multi-billion dollar cost.
So for now, the tritiated water is pumped into a steadily growing collection of tanks. There are already hundreds of them, and Tepco has to start building a new one every four days.
Tepco has at least reduced the water’s inflow. As much as 400 tons per day was gushing in just a couple of years ago. In an effort to keep the groundwater from getting in, Tepco has built a network of pumps, and in 2016 installed an underground “ice wall”—a \$300 million subterranean fence of 30-yard-long rods through which tons of sub-zero brine is pumped, freezing the surrounding earth. All of which helps, but hasn’t solved the problem.
Most Popular
Tritium is far less dangerous than cesium—it emits a weaker, lower-energy form of radiation. Still, all that tritiated water can’t just be stored indefinitely. “Some of those tanks and pipes will eventually fail. It’s inevitable,” says Dale Klein, a former head of the US Nuclear Regulatory Commission who has been consulting with Tepco since the early days following the disaster. (In fact, hundreds of tons of water leaked out of the tanks in 2013 and 2014, sparking an international outcry. Tepco has since improved their design.)
Klein, among others, believes that the concentrations of tritium are low enough that the water can safely be released into the sea. “They should dilute and dispose of it,” he says. “It would be better to have a controlled release than an accidental one.”
But the notion of dumping tons of radioactive water into the ocean is understandably a tough sell. Whatever faith the Japanese public had left in Tepco took a further beating in the first couple of years after the meltdowns, when several investigations forced the company to acknowledge they had underreported the amount of radiation released during and after the disaster. Japan’s fishing industry raises a ruckus whenever the idea of dumping the tritiated water is broached; they already have to contend with import restrictions imposed by neighboring countries worried about eating contaminated fish. Japan’s neighbors including China, Korea, and Taiwan have also objected.
For now, all Tepco can do is keep building tanks, and hope that someone comes up with a solution before they run out of room—or the next earthquake hits.
Radioactive Response
- Humans still can't locate the hundreds of tons of fuel inside the nuclear reactors that suffered meltdowns in 2011—but [maybe robots can](https://www.wired.com/story/fukushima-robot-cleanup/?mbid=BottomRelatedStories).
- Cancer rates spiked after Fukushima, but [you shouldn't necessarily blame the radiation](https://www.wired.com/2016/03/cancer-rates-spiked-fukushima-dont-blame-radiation/?mbid=BottomRelatedStories).
- But nuclear energy still carries major risks: [Do they outweigh the benefits](https://www.wired.com/2016/04/nuclear-power-safe-save-world-climate-change/?mbid=BottomRelatedStories) in a rapidly warming world? |
| Shard | 99 (laksa) |
| Root Hash | 5736512710119187299 |
| Unparsed URL | com,wired!www,/story/fukushimas-other-big-problem-a-million-tons-of-radioactive-water/ s443 |