Comparative assessment of drinking water quality of individual settlements of Mogils-Podilsky district of Vinnitsa region

Abstract

The work is devoted to the actual problem of environmental safety and quality assessment of various water sources Mohyliv-Podilsky district of Vinnitsa region. It has been carried out hydrochemical analysis and calculated an index of pollution of natural waters, biological testing performed using a battery of test organisms, given recommendations to improve the water quality of the study area.It has been established that the most indicative parameters of pollution of water supply sources are hardness indicators, concentration of cadmium, lead, nitrates. None of the investigated sources have corresponded to the “clean water” indicator. Water samples that as a result of hydro-chemical analysis had been characterized by relatively safe, exhibited chronic toxicity for invertebrates. It has been found that water from a centralized source is characterized by the acute toxicity and leads to changes in living organisms at the cellular level. It is recommended to carry out quarterly water sampling in the indicated sources; minimization of the use of nitrogen fertilizers in settlements, in particular, near water supply sources.