drinking water

Purpose. Assess the quality of drinking water of sources of decentralized water supply of rural settle-ments of Berezivka united territorial community of the enlarged Zhytomyr district. Methods. Field, laboratory-analytical, statistical. Results. As a result of research it is established that the greatest contribution to the pollution of drinking water is made by nitrates, the excess content of which was recorded on average in 50.7% of the selected samples, and in 57% of the studied settlements water belongs to quality class 4, "Limited" given undesirable quality. A critical situation was recorded in Bolyarka, Bondartsi, Dubovets and Cheremoshne villages, in which well water had increased content of nitrates in all selected samples. On average, 34% of the selected water samples do not meet the standard for the pH value in the direction of its reduction. In terms of pH, quality classes vary from "excellent", very clean to "good", clean water with a bias to the class of "satisfactory", slightly contaminated acceptable quality). The total iron content exceeded the standard by 6.6% of the selected samples. Conclusion. It is proved that the formation of the general class of water quality is significantly influenced by a group of general sanitary indicators, which is primarily due to the high content of nitrates in the studied sources of decentralized water supply. The calculation of the integrated ecological index of development of rural settlements according to the indicators of drinking water quality showed that such rural settlements as: Zamozhne and Sadky need priority attention; 11 settlements need improvement; only village of Vasylivka needs support at the same level.

Purpose. The risk assessment for human health using petroleum contaminated drinking water from mine wells. Methods. Methods RAIS (US-EPA). Results. There are results of the risk assessment for human health using petroleum contaminated drinking water from mine wells. For the calculation of risk measurement results used oil content in the water which is taken away from the mine wells in 2015 when examining basin of Siv.Donets within Balakliyivskiy, Chuguevskiy and Izyumskiy districts (Kharkiv region). To solve this problem we used technique RAIS (US-EPA). Conclusions. The most sensitive to the pollutant children; greatest gravity of prolonged exposure is fixed dermal contact. The highest risk of chronic effects observed with village Andriyivka Balakliyivskiy district and in the village Stara Hnylycia Chuguevskiy district.

Private drinking water sources of the Lenin and Dzerzhinsky district in Kharkov – «Sarzhin yar» and the park «Unist» were investigated and for comparison - tap water. Complex rating evaluation of drinking water sources in Kharkov was calculated on socio-economic indicators by which determined that the best in terms of customer is the source of «Sarzhyn yar» and for pH value meets STATE STANDARDS 2.2.4-171-10. The con-centrations of trace elements in water from all sources studied are in the normal range..

A retrospective analysis of the water quality of surface water sources, found reasons for deterioration of product quality and developed recommendations for improving the use of technical solutions for potable water for the population.