The Japanese government has been desperately trying to accelerate the cleanup ahead of the upcoming 2020 Olympic Games in Tokyo – and it’s a miracle it hasn’t run into this issue sooner. TEPCO is still struggling with how to dispose of the tritium-tainted water. Options discussed have included dumping it into the ocean, but that proposal has angered local fishing communities.

At some point, TEPCO and the government will need to make a difficult decision. Until then, ground water will continue to seep into the ruined reactor, where it becomes contaminated. Afterward, TEPCO can treat the contaminated water to purify it, but they can’t remove the tritium, which is why the supply of water contaminated with tritium continues to grow.

As one government official pointed out, Japan can’t simply store the radioactive water forever. As of now, the company should be able to store water until 2020.

Efforts have been made to increase storage capacity by constructing bigger tanks when the time comes for replacing the current ones. But a senior official of the Economy, Trade and Industry Ministry said, “Operation of tanks is close to its capacity.”

TEPCO plans to secure 1.37 million tons of storage capacity by the end of 2020, but it has not yet decided on a plan for after 2021. Akira Ono, chief decommissioning officer of TEPCO, said, “It is impossible to continue to store [treated water] forever.”

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