Ensuring the quality of ground water resources at the water intakes of the Narskoye deposit

Abstract

The purpose of the research is to substantiate and establish sanitary protection zones for ground water intakes of the Nara field in conditions of changing hydrodynamic and hydrochemical regimes based on quantitative assessments of the protection of the main aquifer from surface potential pollution. The results of the conducted research on the study of the hydrological and hydrogeological conditions of the Nara deposit, located on the territory of the Naro-Fominsk urban district of the Moscow region and which pumps groundwater for urban drinking water supply, are considered. The analysis of the dynamics of the hydrodynamic and hydrogeochemical regimes of the main aquifers of the deposit is carried out and the features of their formation are revealed. According to the data of long-term studies, a change in the quality of selected groundwater has been established, in which the natural content of individual components increased in relation to maximum permissible concentrations (MPC) is recorded, associated with the lithological features of water-containing sediments. A quantitative assessment of the protection of groundwater from surface pollution has been carried out. It has been established that the studied intake of the Kashirsky horizon does not have sufficient protection of groundwater from surface pollution. The composition of necessary measures and techniques for various purposes (technical, technological and environmental) that will preserve and ensure the quality of groundwater at the Nara deposit is proposed.