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BOOKLET to Provide Basic Information Regarding Health Effects of Radiation (2nd edition)

Results of Well Water Inspection in Fukushima Prefecture

Results of Well Water Inspection in Fukushima Prefecture_Figure

Fukushima Prefecture's reconstruction information portal site, "Fukushima Revitalization Station," publicizes the results of the drinking well water inspection, which has been conducted since 2011, the year when the nuclear accident occurred. Based on the inspection system established under the Fukushima Prefecture Monitoring Program for Radioactive Materials in Drinking Water, the inspection has been conducted for municipalities upon their requests.

Fukushima Revitalization Station: "Drinking water" (in Japanese)

The national standard for drinking water including well water is 10 Bq/kg, but radioactive materials have never been detected from well water in the inspection conducted so far. Inspection results have been all "ND" (not detected; below the detection limit).

The detection lower limits for radioactive cesium and radioactive iodine were both 5 Bq/kg in 2011 and are 1 Bq/kg at present.

  • Included in this reference material on March 31, 2017
  • Updated on March 31, 2021
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