The tritium concentration in the sixth batch of diluted ALPS treated water, which the Tokyo Electric Power Company (TEPCO) began discharging on 17 May, is far below Japan’s operational limit, International Atomic Energy Agency (IAEA) experts have confirmed.

The treated water was sampled and assessed by IAEA experts stationed at the Agency’s office at the site of the Fukushima Daiichi Nuclear Power Station (FDNPS). After conducting an independent on-site analysis, the IAEA confirmed that the tritium concentration in the diluted water is far below the operational limit of 1500 becquerels per litre.

Japan is discharging the ALPS-treated water from the FDNPS in batches. The IAEA has earlier confirmed that the tritium concentrations in the previous five batches, totalling 38,900 cubic meters of water, were far below operational limits.

In a comprehensive?report?issued on 4 July 2023, the IAEA’s safety review found that Japan’s plan for handling the treated water was consistent with international safety standards and that the release as planned would have a negligible radiological impact to people and the environment.

All reports on sampling, independent analysis, data evaluation, as well as timeline, will be available on the IAEA?website.