As a Part of Additional Measures under the IAEA Framework, ALPS Treated Water Diluted with Seawater was Sampled on the Premises of TEPCO’s FDNPS for the First Time

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

In September 2024, Japan and the IAEA concurred on conducting the additional measures under the IAEA framework. These additional measures were conducted following the measures in February 2025. 

In the additional measures, 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 TEPCO’s FDNPS for the first time.

Ministry of Economy, Trade and Industry 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.

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Related Links

• As a Part of Additional Measures under the IAEA Framework, ALPS Treated Water Diluted with Seawater will be Sampled on the Premises of TEPCO’s FDNPS for the First Time
• As a Part of Additional Measures under the IAEA Framework, ALPS Treated Water was Sampled on the Premises of TEPCO’s FDNPS for the First Time
• Let's get to know and understand about ALPS treated water [Ministry of Economy, Trade and Industry]
• IAEA Website about ALPS treated water

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