Japan nuclear monitoring: Tests show radioactivity concentration decreased in most foods products within five years Monitoring tests of Japan’s food products after the 2011 Fukushima nuclear accident showed that drinking water, milk and infant food were within the radioactivity concentration limits after five years, but some samples from the wild animal meat and agricultural categories still showed high radioactivity. The Fukushima Dai-ichi Nuclear Power Plant accident occurred in March 2011, releasing radionuclides into the environment. In 2012, the government set standard limits for radionuclide in foods, specifically radioactive cesium. The limits were set at 10 Bq/kg for drinking water, 50 Bq/kg for milk and infant food, and 100 Bq/kg for general foods which includes wild animal meat, fishery and agriculture.