Tritium in Sources of Drinking Water Supply in the Areas Affected by the Beloyarsk NPP and PA MAYAK

Data are presented on the levels of tritium concentrations in different types of drinking water in the areas affected by the Beloyarsk NPP and the Mayak Production Association. The objects of the study were wells, boreholes, network and spring water in the territories adjacent to nuclear enterprises, as well as in the floodplains of the Pyshma and Techa rivers. A direct (for the MAYAK PA zone) and inverse (for the Beloyarsk NPP zone) relationship between tritium concentrations in the water of wells and boreholes and the depth of the water source has been established. When studying well water in the area of the Beloyarsk NPP during a 10-year observation period, the fact of penetration of the radionuclide into deeper subsoil horizons was revealed, as a result of which the concentration of tritium in drinking water increased noticeably.