Site selection assessment for river drinking source water of a city in northern

In order to establish and quantize the assessment system for the site selection of river drinking source water, City A in northern was took as the case. The assessment system which involve law, environmental quality, water resources protection and environmental risk was established by analytic hierarchy process (AHP). There were eight negative factors and twenty evaluation factors in the system, and the weight of evaluation factors were defined by literature review and expert survey. These evaluation factors were quantized according to environmental standards and technical guidelines. Both program I and II of City A can be carried engineering appraisal out; the water quality of river basin was no good, so the advanced treatment process should be considered in the construction of water plant; the environmental risk index of program I and II were high, administration should strengthen the management of risk source on the risk characteristics.