TEPCO Completes 25th Discharge of Treated Water from Fukushima Daiichi: About 7,800 Tons This Round, Cumulative Total About 196,000 Tons
Tokyo Electric Power Company (TEPCO) announced on November 13 that the seventh discharge of ALPS-treated water in fiscal 2026, and the 25th overall, from the Fukushima Daiichi Nuclear Power Station was completed shortly after noon that day.
The discharge began on October 26. About 7,800 tons of treated water, diluted with large volumes of seawater, were released through an undersea tunnel into the sea about one kilometer off the plant. The treated water discharged in this round contained a total of about 1.4 trillion becquerels of radioactive tritium. Discharges began in August 2023; the cumulative total stood at 188,400 tons through the end of the 24th round and reached about 196,000 tons after this round.
TEPCO plans to discharge a total of about 62,400 tons of treated water in eight rounds in fiscal 2026, with one more round remaining this fiscal year. Measurements by TEPCO and Japanese government agencies found tritium concentrations in seawater and marine products around the plant well below national standards during and after the discharge, with no exceedances detected.
Source: Tokyo Electric Power Company
Published by GSM · USA (original Chinese edition)
Photo: 图：福岛第一核电站内的海洋生物养殖试验设施，经海水稀释的ALPS处理水用于相关试验（资料图，与本站11月5日国际原子能机构报告稿同图）。国际原子能机构 IAEA Imagebank 摄，CC BY 2.0，经 Wikimedia Commons。 / Photo: Marine-organism rearing test facility at the Fukushima Daiichi Nuclear Power Station, where ALPS treated water diluted with seawater is used in the tests (file photo; same image as GSM's November 5 IAEA report story). Photo by IAEA Imagebank, CC BY 2.0, via Wikimedia Commons.
