Press Releases

Additional Measures under the IAEA framework related to the discharge of ALPS treated water into the sea (Results)

April 15, 2025

As a part of additional measures under the IAEA framework that Japan and the IAEA concurred on conducting in September 2024, the IAEA officials and experts from third-party laboratories visited Japan and collected samples on April 15.

  1. IAEA officials and experts from laboratories from China, Republic of Korea, Russia and Switzerland sampled ALPS treated water diluted with seawater prior to the discharge into the sea on the premises of Tokyo Electric Power Company Holdings’s Fukushima Daiichi Nuclear Power Station
  2. This was the third mission for conducting the additional measures , following October 2024 and February 2025.
  3. The Government of Japan will continue to maintain close coordination with the IAEA in sharing information with the international community in a highly transparent manner and fostering better understanding of the safety of the discharge of ALPS treated water within both the domestic and international communities.

(Reference) Past missions for conducting the additional measures

  • 1st: October 15, 2024 (collection of seawater)
  • 2nd: February 19, 2025 (collection of seawater), February 20, 2025 (selection of fishery products), February 21 ,2025 (collection of ALPS treated water prior to dilution with seawater)
  • 3rd: April 15, 2025 (collection of ALPS treated water diluted with seawater prior to the discharge into the sea)

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