Sanitary and chemical indicators of surface water source and drinking water on the Kola coast (on the example of Severomorsk)

The paper presents data on the study results of sanitary and chemical indicators of water from the surface source and drinking water in Severomorsk for the period 2017–2018. The authors have revealed that the main indicators (smell, iron, pH, total hardness, chlorides, sulfates, ammonia nitrogen, nitrates and nitrites) of the water in the capital of the Northern fleet fully complies with SanPiN 2.1.5.980-00 «Hygienic requirements for the protection of surface water». During the study period, there were slight fluctuations in indicators due to seasonal dynamics. The analysis of the data showed that drinking water in all areas of Severomorsk in color in 2017 exceeds the limit of MPC. The greatest excess is observed in summer. This is due to the fact that in spring and summer a large number of fulvic and humic acids, which lead to an increase in color, comes to the pond with rain and swampwaters. A direct dependence of color on iron parameters was also revealed. The iron content in drinking water for 2017–2018 exceeds the MAC boundary, which can be associated with water stagnation, which causes an increase in the concentrations of this indicator. The obtained data can be used in the implementation of measures to improve water treatment, drinking water treatment and allocation of the necessary funds for the implementation of the plan of utilities overhaul.