[The role of chemical composition of drinking water in predicting the incidence of urolithiasis].

Detailed observational data on urolithiasis incidence at the territory of the Amur Region are presented. 4 foci with a high level of disease incidence have been detected. The content of calcium, magnesium, and strontium has been determined in drinking water and correlation of urolithic disease rates with rations Ca/Sr and Mg/Sr were established.