TEPCO Begins 23rd ALPS Treated Water Discharge (5th of FY2026)

TEPCO began the fifth FY2026 round of ALPS-treated water discharge on August 31, 2026 (11:29 a.m.), about 7,800 tons diluted with seawater and released through the undersea tunnel about 1 km offshore, scheduled to run until September 18. It is the 23rd release since August 2023; the plan for FY2026 is 62,400 tons in eight rounds. Tritium in nearby seawater and fishery products remains far below regulatory limits per TEPCO and government surveys.