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Result of a measurement of tap water and radioactive material of water supply Haramizu

Last update date July 29, 2020

We announce result of a measurement of radioactive material of tap water in the city feed cock (faucet). Water intake point is periodical examination of water point of 15 city.
In addition, we announce result of a measurement of tap water in water purification plant in the city and radioactive material of water supply Haramizu (water before cleaning water, and handling). As for the tap water, water of distributing reservoir exit of each water purification plant, water supply natural water collect water with water of entrance of each water purification plant each.

From April 1, 2012, the standard value of Ministry of Health, Labour and Welfare notification was reviewed, and new target value "10 becquerels/kg" was set about radioactive cesium in tap water. We introduce germanium semiconductor detector in City of Yokohama, Water Works Bureau from June 1, 2012 and measure radioactive material precisely.

In addition, we did the measurement frequency more than once a month based on Ministry of Health, Labour and Welfare notice from January, 2014 because we were able to collect enough information about the tendency about tap water and radioactive cesium of water supply Haramizu because all the result of a measurement of conventional radioactive cesium was the non-detection.

※In addition, as for the result of a measurement of radioactive material in water purification plant of wide area Channel company group in Kanagawa supplying tap water to Yokohama-shi, please see homepage of wide area Channel company corps in Kanagawa from the following related link.

Result of a measurement of radioactive material of the city feed cock

Result of a measurement of radioactive material of water purification plant

About water purification plant supplying Yokohama-shi with water

The Yokohama city is supplied with water by the following water purification plant.

  • Water purification plant ... willow tit water purification plant of City of Yokohama, Water Works Bureau, Nishiya water purification plant, Kawai water purification plant
  • Water purification plant ... Ayase water purification plant of wide area Channel company group in Kanagawa, Sagamihara water purification plant, the west Nagasawa water purification plant

Related link

Inquiry about water supply to Water Works Bureau customer Service Center

Water Works Bureau customer Service Center

Telephone: 045-847-6262 fax: 045-848-4281
※You run, and please be careful not to make any mistake

Inquiry to this page

The Water Works Bureau clean water part quality of the water section

Telephone: 045-371-5656

Telephone: 045-371-5656

Fax: 045-371-6942

E-Mail address [email protected]

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