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Data on radiation levels of tap water

Products which have shipping restrictions imposed by the government are not in market circulation

Year/Month/Day Region Municipality Name of water supplier Sample location Amount of radiation (becquerel​/kg) Measuring organization Notes
Radioactive iodine Radioactive cesium
134 137 134+137
Measured values Standard value(other ages/Infants under 1 year old) Measured values Measured values Measured values Standard value(other ages)
2025-07-07 Kurihara Area Kurihara City Osaki regional wide-area water supply Nakamine Water Purification Plant - 300/100 Not detectable(0.6Below) Not detectable(0.6Below) Not detectable(1.2Below) 10 宮城県 基準を満たしています。
2025-07-04 Osaki Area Shikama Town Shikama Town water supply Ojoji Water Purification Plant Not detectable(0.5Below) 300/100 Not detectable(0.6Below) Not detectable(0.5Below) Not detectable(1.1Below) 10 (一財)宮城県公衆衛生協会 基準を満たしています。
2025-07-02 Kesennuma,Mtoyoshi Area Kesennuma City Kesennuma City water supply Osawa Water Purification Plant - 300/100 Not detectable(0.67Below) Not detectable(0.93Below) Not detectable(1.6Below) 10 日鉄環境(株) 基準を満たしています。
2025-07-02 Kesennuma,Mtoyoshi Area Kesennuma City Kesennuma City water supply Izumisawa Water Purification Plant - 300/100 Not detectable(0.79Below) Not detectable(0.94Below) Not detectable(1.73Below) 10 日鉄環境(株) 基準を満たしています。
2025-07-02 Kesennuma,Mtoyoshi Area Kesennuma City Kesennuma City water supply Yatsuse Water Purification Plant - 300/100 Not detectable(0.85Below) Not detectable(0.95Below) Not detectable(1.8Below) 10 日鉄環境(株) 基準を満たしています。
2025-07-02 Kesennuma,Mtoyoshi Area Kesennuma City Kesennuma City water supply Nijyuuichi Water Purification Plant - 300/100 Not detectable(0.83Below) Not detectable(0.92Below) Not detectable(1.75Below) 10 日鉄環境(株) 基準を満たしています。
2025-07-01 Kesennuma,Mtoyoshi Area Kesennuma City Kesennuma City water supply Tateyama Water Purification Plant - 300/100 Not detectable(0.83Below) Not detectable(0.89Below) Not detectable(1.72Below) 10 日鉄環境(株) 基準を満たしています。
2025-07-01 Kesennuma,Mtoyoshi Area Kesennuma City Kesennuma City water supply Odouyama Water Purification Plant - 300/100 Not detectable(0.93Below) Not detectable(0.93Below) Not detectable(1.86Below) 10 日鉄環境(株) 基準を満たしています。
2025-07-01 Kesennuma,Mtoyoshi Area Kesennuma City Kesennuma City water supply Niitsuki Water Purification Plant - 300/100 Not detectable(0.95Below) Not detectable(0.91Below) Not detectable(1.86Below) 10 日鉄環境(株) 基準を満たしています。
2025-07-01 Kesennuma,Mtoyoshi Area Kesennuma City Kesennuma City water supply Kamishishiori Water Purification Plant - 300/100 Not detectable(0.86Below) Not detectable(0.95Below) Not detectable(1.81Below) 10 日鉄環境(株) 基準を満たしています。

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