在重庆市城市集中式饮用水源地基础环境调查的基础上，对重庆市水库型饮用水源地的水质类别、水质富营养化状况、水质健康风险、水质污染风险进行了评价，并用层次分析法对水安全进行综合评价，从而得出重庆市水库型饮用水源地的水质安全状况，为重庆市开展饮用水水源保护和管理提供参考依据。结果表明,重庆市水库型水源地水质安全良好，良好和中等级的水源地占89%。

On the basis of investigating the environmental information of centralized drinking water sources Chongqing City water quality classification, water quality eutrophic state, water quality healthy risk and water pollution of reservoir-based drinking water sources in Chongqing City were evaluated. And the analytical hierarchy process also was used to evaluate water security comprehensively. Finally, the water security status of reservoir-based drinking water sources of Chongqing City was achieved, which can provide a reference for protection and management of drinking water source. The results show that the water quality of reservoir-based drinking water sources is good, the rate of water sources security reaching standard is 97 percent.