由于城市供水与城市建设和发展有着直接的联系。因此城市供水系统的服务必须具有高度的连续性,对于大中城市来说,城市供水的可靠性要求也较高。对于可靠性方面的研究,世界上最初只用于国防工程的尖端技术,后来发展到电子计算机系列,在国内外对于城市供水方面从七十年代才开始有人应用可靠性工程技术,美国的戴姆林,沙米尔,阿拉德等首次提出如何评价给水可靠性问题,在1981年AWWA发表“给水可靠性”文章, Due to the direct connection between urban water supply and urban construction and development. Therefore, the service of urban water supply system must have a high degree of continuity. For large and medium-sized cities, the reliability of urban water supply is also high. For reliability research, the world’s first cutting-edge technology used only for national defense projects, and later developed into the series of electronic computers at home and abroad for urban water supply from the seventies began to apply reliability engineering technology, the United States, Lin, Shamir, Arad and others first proposed how to evaluate the reliability of water supply. In 1981, AWWA published an article entitled “Water Supply Reliability”