[Regional standardization of water chemical substances in case of the Arkhangelsk region].

The paper gives the data characterizing the status of water supply systems, the efficiency of waterworks, and the quality of drinking and Severnaya Dvina River waters. It generalizes the data characterizing the sanitary-and-epidemiological situation and human health in the region. There is evidence for the assumption that regional standardization of chemical compounds in the drinking water of northern regions should be carried out during water preparation, which confirms the conclusions of hygienic and toxic studies previously conducted in individual areas and those given in the references.