ANALYSIS OF HYDROGEOLOGICAL CONDITIONS OF OCCURRENCE AND QUALITY OF GROUNDWATER IN THE TERRITORY OF KEZ SETTLEMENT OF THE UDMURT REPUBLIC

Abstract

In the village of Kez of the Udmurt Republic, the drinking water supply is carried out at the expense of groundwater. The quality of groundwater does not fully comply with hygienic standards. Formation of the chemical composition of natural waters in the study area is determined mainly by natural factors, namely the hydrogeological conditions of their occurrence. Anthropogenic factors in the study area do not significantly affect the quality of groundwater. Almost everywhere there are waters with excess of boron standards, as well as with an increased level of mineralization. No excess of MPC for nitrates, nitrites and ammonium was recorded. To provide the population with high-quality drinking water, it is proposed to search for other underground sources of water supply, the water from which will comply with hygienic standards. The analysis of hydrogeological data and the conditions of occurrence of aquifers in the study area showed that the Slobodskoy complex and the roof of the Verkhneurzhum formations are the most suitable for operation. Drilling deeper wells will lead to deterioration of water quality by underlying alkaline waters, which, due to their alkalinity, will more actively dissolve boron contained in rocks. It was also revealed that drilling wells for drinking needs in deep cuts of river valleys is impractical due to the fact that in this case highly mineralized waters are opened. Prospecting works should be carried out within the framework of hydrogeological studies of the territory and regional monitoring of groundwater.