THE CURRENT STATE OF CROUNDWATER OF REGION DEVELOPMENT SALT KARST IN THE TERRITORY OF PERM REGION
The salt karst in the territory of Perm Krai is widespread in limits of the Verkhnekamsky field of potassium-magnesium salts. The assessment of a current state of underground waters is given according to production environmental control of the salt-mining enterprises, monitoring of several large water intakes and to features of spring unloading during 2003-2013. On sites in a zone of influence of industrial facilities underground waters are subject to intensive pollution (salinization) caused by high concentration of chlorides of sodium and potassium; out of influence zones they have mainly natural natural shape. The hydrochemical mode within fields of fresh underground waters completely answer drinking norms and it is stable in time.