安全用水伙伴关系（PSW）旨在鼓励美国供水商调查其公用设施，以确定哪些区域将提高水系统的能力，防止隐孢子虫、贾第鞭毛虫和其他微生物污染物进入处理过的水，并自愿实施适合该系统的行动。密歇根州安娜堡市参与了PSW，该市的水处理厂工作人员能够确定在维持或改善水质方面的优势和劣势。电厂自我评估和PSW项目有效性评估委员会的访问确定了许多需要改进的项目。本文讨论了四个最优先的项目。

The Partnership for Safe Water (PSW) was developed to encourage US water suppliers to survey their utilities to identify areas that will enhance the water system's ability to prevent entry of Cryptosporidium, Giardia and other microbial contaminants into treated water and to voluntarily implement those actions that are appropriate for the system. The City of Ann Arbor, Michigan, participated in the PSW which enabled the City's water treatment plant staff to identify both strengths and weaknesses in efforts to maintain or improve water quality. A plant self assessment and a visit from the PSW's Program Effectiveness Assessment Committee resulted in the identification of many items that needed improvement. This paper `discusses four of the highest priority projects.