Fukushima N-Plant Ends Latest Round of Treated Water Release

Fukushima Daiichi’s operator, Tokyo Electric Power Company Holdings (TEPCO), said the plant has completed its fourth round of treated water releases into the Pacific Ocean for fiscal 2026. The latest round began July 30 and involved discharging about 7,800 tons of diluted water containing radioactive tritium through an underwater tunnel roughly 1 kilometer offshore. During fiscal 2026, TEPCO plans to release about 62,400 tons of treated water across eight rounds starting in April. The company and the Japanese government have conducted surveys and reported that tritium levels in surrounding seawater and fishery products remain below safety standards set by the state.