The nuclear plant failed 12 years ago in an earthquake and tsunami, and officials say they have run out of space to store water used to cool the ruined reactors.
In the face of regional and domestic objections, the country plans to proceed with a discharge at Fukushima that will eventually reach more than a million tons of water.
Japan’s plan to discharge treated water from its destroyed Fukushima nuclear plant has triggered a backlash in the region, especially in highly polarized South Korea.