TOKYO — In late 2019, the Japanese government convened diplomats from 22 countries for a briefing on its handling of more than a million tons of wastewater from Fukushima’s crippled nuclear reactors.
Storage space was rapidly running out, the authorities explained, and they were considering several solutions. Among them was removing the most harmful radioactive material from the water and then gradually releasing it into the ocean. The diplomats raised no objections, the Japanese Foreign Ministry said.
On Tuesday, when Japan officially announced that it would put the plan into action, the knives came out. South Korea denounced it as “utterly intolerable” and summoned the Japanese ambassador. China cited “grave concerns.” Taiwan also raised strong objections.
Japan has dismissed criticism of its plan as unscientific, saying that the treated water is well within safety standards, and pointing out that such releases into oceans are routine around the world. But its argument, as the reaction on Tuesday showed, leaves Tokyo a long way from winning its neighbors’ trust, a challenge made all the more difficult by growing regional tensions on a range of issues.
Japan’s handling of the nuclear disaster. China and South Korea are among 15 countries or regions that have banned or restricted food imports from Fukushima, despite the Japanese government’s abundant efforts to demonstrate that products from the area, from rice to fish, are safe to eat.
International advocacy groups, like Greenpeace, have also criticized the government’s decision, arguing that it is a cost-saving measure that ignores the potential environmental harms. The group advocates building additional storage facilities for the waste instead.
Even at home, the idea of pouring water, treated or not, from the crippled plant into the ocean is unpopular. In a national poll late last year by the Japanese daily The Asahi Shimbun, 55 percent of respondents opposed the plan.
It is even less welcome in Fukushima itself, where residents fear that the mere perception of risk will destroy the local fishing industry, which has been hoping for a rebound after a decade of self-imposed limits.
the 2011 earthquake and tsunami generates more than 150 additional tons a day.
Under the plan, powerful filters will be used to remove all of the radioactive material from the water except for tritium, an isotope of hydrogen that experts say is not harmful to human health in small doses. Radiation levels in the resulting product, the government says, are lower than those found in drinking water. Japan intends to start releasing the water in 2023, in a process that is expected to take decades.
In an effort to ease minds at home, the authorities have placed dosimeters around the prefecture to monitor radiation levels and conduct routine screenings of seafood from the region. The government has held public hearings on the plan in Fukushima and in Tokyo.
The authorities say that they have also discussed the issue extensively with other countries and at international forums. In a news briefing on Tuesday, a Japanese official said that the country had held 108 group briefings for diplomats in Japan and had met with representatives from China and South Korea on the day of the announcement to explain the decision.
The United States came out in support of the plan. The International Atomic Energy Agency also endorsed it, saying in a statement that it was “in line with practice globally, even though the large amount of water at the Fukushima plant makes it a unique and complex case.”
The gap between such reassurances and the strident reactions closer to home was striking.
The outrage in the region is “quite understandable,” said Nanako Shimizu, an associate professor of international relations at Utsunomiya University in Japan who is opposed to the plan.