Japan says seawater radioactivity below limits near Fukushima

TOKYO - Japan's environment ministry on Sunday (Aug 27) said tests of seawater near the Fukushima nuclear power plant did not detect any radioactivity, days after the discharge of treated water that had been used to cool nuclear reactors.

The east-Asian nation on Thursday started releasing water from the wrecked Fukushima plant into the Pacific Ocean, sparking protests within Japan and neighbouring countries and prompting China to ban aquatic product imports from Japan.

The environment ministry's tests of samples taken from 11 points near the plant concluded concentrations of radioactive isotope tritium below the lower limit of detection - seven to eight becquerels of tritium per litre. It said the seawater "would have no adverse impact on human health and the environment".

The ministry will publish test results weekly at least for the next three months and will then review the timing of further disclosure, an official told Reuters on Sunday.

Japan's fisheries agency on Saturday said tests of fish in waters around the plant did not detect tritium.

Plant operator Tokyo Electric Power Co (Tepco) on Friday said seawater near the plant contained less than 10 becquerels of tritium per litre, below its self-imposed limit of 700 becquerels and far below the World Health Organisation's limit of 10,000 becquerels for drinking water.

Tepco on Sunday said it had not detected any significant change.

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