Quality of the rivers water for potation purposes in the west of Qazvin province.

The effects of geology on surface water resources and water quality and quantity changes of Rivers in the western part of Qazvin province were analyzed. And in particular Khar-roud River, Abhar-roud River and tributaries have they been reviewed. Sampling was made from the surface waters of the under study area in 5 stations and the samples underwent experimental analysis to determine the qualitative changes of the water in terms of drinking, agricultural and industrial consumptions. In sum according to the study results, drinking water quality of Abhar-roud, khar-roud and Golanjin chay Rivers was classified as good to moderate, moderate and respectively unsuitable. Also in terms of agricultural consumption the water quality of Abhar-roud, Chay-roud and GolanjinKhar rivers was evaluated as good to moderate, moderate to unsuitable and moderate respectively. ?and Increase the EC from West to East along the river Abhar-roud represents an increase of ions in surface water due to the passage of water through evaporation and dissolution of the formations mostly Democrats.