Subjective assessment of water quality of the centralized water supply by residents of the city Kirovsk

Sampling of water from centralized water supply in six cities of the Murmansk region, conducted back in 2013, showed significant excesses of MAC (2-5 times) in drinking water of city networks for two metals - aluminum at the city of Kirovsk and nickel at the cities of Zapolyarny and Nikel. At all six cities (Apatity, Kirovsk, Monchegorsk, Olenegorsk, Zapolyarny, Nikel) surveyed, a multiple increase in the concentration of iron and other metals was noted during water transportation in the distribution network, which indicates the need to replace worn-out water supply networks with modern ones. A survey of residents of Kirovsk was conducted to determine their subjective assessment of the quality of cold and hot water supply at the present stage. Data obtained from an anonymous voluntary survey of 420 respondents were used. An analysis of the obtained results indicated that the subjective opinion of residents about the quality of water after it passes through distribution water supply networks differs from the indicators provided by service providers and regulatory organizations.