由于美国和加拿大最近爆发了隐孢子虫疫情，许多公用事业公司担心其治疗系统的性能。目前，公用事业公司可以采取的最具响应性的行动是确保其处理设施以尽可能接近最佳的效率运行，以去除病原体和消毒。目前，衡量去除隐孢子虫等寄生虫效率的最佳方法是评估植物去除浊度和颗粒的性能。本文回顾了一些性能评估程序，以及由水务公司发起的评估和工艺改进计划得出的结果。 彻底的污水处理厂评估和改进计划是确保饮用水无病原体的最佳方式。包括9个参考文献和表格。

Many utilities are concerned about the performance of their treatment systems as a result of recent Cryptosporidium outbreaks in the United States and Canada. The most responsive course of action a utility can take at this time is to ensure that its treatment facilities are operating at as close to optimum efficiency for pathogen removal and disinfection as possible. Currently, the best measure of efficiency for removal of parasites such as Cryptosporidium is assessing plant performance for turbidity and particle removal. This article reviews a number of performance evaluation procedures as well as results derived from evaluation and process improvement programs initiated by water utilities. A thorough treatment plant evaluation and improvement program is the best way to ensure pathogen-free drinking water. Includes 9 references, tables.