Assessment of the Open Water State in Water Use Point of the Population the Murmansk Region

Abstract

The study of the ecological situation in lake basins, including the assessment of water pollution, has become relevant recently, since the quality of drinking water depends on the quality of surface water bodies. The paper reflects the main results of water quality assessment of Lower Vaengskoye Lake in the Murmansk Region in the period 2016–2017. Hydro-chemical studies included the following indicators: biochemical consumption of oxygen, mass content of ammonium, nitrites, nitrates, sulfates, iron, coloration and hardness of water, permanganate oxidation. Natural factors are decisive contributors to the chemical composition of water. The sanitary status of the lake was assessed using the methods of microbiological analysis of water from the surface sources of water use. According to the microbiological indicators in the studies, water meets the requirements of hygienic standards. According to sanitary-chemical indicators, there is a variance with the requirements of hygienic standards in 10% of all the studies conducted, namely in terms of coloration, permanganate oxidation, and iron. On the whole, the quality of the lake’s water during the period of the study was assessed by the value of the integral hydro-chemical index as “pure” water (by the value of WPI). The results of the tests make it possible to conclude that the degree of the anthropogenic burden on the reservoir studied is insignificant.