Method of regional environmental risk assessment for reservoir type drinking-water source

Regional environmental risk assessment of drinking-water source is considered a very effective way for us to find out the security situation and hidden danger of Drinking-water source and to discriminate the high-quality drinking-water sources for differentiated management. In this paper, reservoir type drinking-water source is selected as the object of assessment. An index system consisted of 2 parts (pollutant risk assessment index system and risk-resisting ability assessment index system) is built to qualitative and semi-quantitative evaluate. We sort out a pollutant source list which is suitable for China and at last established a practical regional environmental risk assessment method. Two reservoir-type water sources in Zhejiang Province are selected as the objects for case application. Assessment results shows that this method can discriminate the drinking-water source by the value of regional environmental risk clearly.