The state of drinking water in the Exclusion Zone meets the hygienic standards

As a result of the analysis of volumetric activity of radionuclides in the underground and drinking waters of the Exclusion Zone as of June 2017, the following was established.

1. The value of 137Cs and 90Sr volumetric activity in underground waters at the standard sampling points vary within seasonal variations.

2. Volumetric activity of the drinking water of the water intake from the water supply network in Chornobyl city is Bq/m3 for 137Cs and 5,9 Bq/m3 for 90Sr; the concentration of radionuclides in the water intake from Pripyat city is 0,6 Bq/m3 for 137Cs and 2,8 Bq/m3 for 90Sr.

According to the State Hygienic Regulations "Permissible levels of radionuclide content of 137Cs and 90Sr in food and drinking water", approved by the Order of the Ministry of Health of Ukraine dated 03.05.2006 No. 256 (DR-2006), the permissible concentration of radionuclides 137Cs and 90Sr in drinking water is 2000 Bq/m3 for each nuclide.

Thus, the pollution of drinking water in the Exclusion Zone is lower than the established control levels.

Reference information
Radiation monitoring of water supply sources (underground waters of the Eocene and the Cenomanian aquifers) on existing water intakes of economic and drinking purposes in the cities of Pripyat and Chornobyl is carried out in accordance with the Regulation of the SSE "Ecocentre" with periodicity of control: at the Pripyat water intake - once per quarter; at the water intake of the city of Chornobyl (pumphouse of the 2nd lifting) - once per quarter; in Chornobyl water supply networks - once per month.

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