Ecological assessment of fresh groundwater quality in the territory of the Republic of Bashkortostan

The article presents natural and anthropogenic sources of groundwater pollution and describes the most polluted areas of the republic. The main polluting components of the underground water environment, which reduce the quality of drinking water, have been determined. As a result of the study, 82 anthropogenic pollution centers were identified. Most of them include nitrogen compounds, sulfates and chlorides, oil products, and in a minority - phenols and heavy metals.