Ecological Aspects of Arsenic Pollution of the Northern DagestanArtesian Basin

摘要

The problems of arsenic pollution of the North Dagestan basin—the only source of drinking water in northern Dagestan—are considered. The results of monitoring of arsenic in 2002 and 2013 are provided. It is noted that the concentration of arsenic inwater is on average 20-30 maximum allowable concentration (MAC). According to preliminary data, its genesis is associated with the migration of arsenic compounds from sand and clay deposits of sedimentary strata of the Pliocene-Pleistocene deposits. Long-term exploitation of the basin with violations of the geotechnical and ecological sanitary standards strengthens the processes of arsenic pollution.