饮用水被认为是美国各地几次隐孢子虫病暴发的传播方式。这篇关于美国疫情的综述描述了原水供应的特点、疑似污染源、水处理方法和纠正措施。在暴发总数中，大约一半与地下水有关；然而，大多数受影响的人都饮用了从地表水抽取的饮用水。 在大约一半的疫情中，废水被认为是原水或净化水的污染源。农业径流等非点源是其余疫情的疑似污染源。大多数受影响的人由处理厂使用混凝剂添加、过滤和氯消毒过程提供服务。尽管在一些疫情暴发期间发现了治疗缺陷和次优操作做法，但所有治疗厂都遵守了联邦和地方法规。 应重新评估现有法规和供水系统，尤其是那些利用地表水资源的法规和供水系统。包括42个参考文献、表格和图表。

Drinking water has been implicated as the mode of transmission in several outbreaks of cryptosporidiosis throughout the United States. This review of US outbreaks describes characteristics of the raw water supplies, suspected sources of contamination, water treatment methods, and corrective actions. Of the total number of outbreaks, roughly half were associated with groundwater sources; the majority of affected individuals, however, were served by drinking water drawn from surface water. Wastewater was implicated as the source of contamination of raw or treated water for roughly half of the outbreaks. Nonpoint sources, such as agricultural runoff, were suspected sources of contamination in the remaining outbreaks. The majority of affected individuals were served by treatment plants using coagulant addition, filtration, and chlorine disinfection processes. Although treatment deficiencies and suboptimal operational practices were noted during some of the outbreaks, all treatment plants were complying with federal and local regulations. Existing regulations and water supply systems, especially those utilizing surface water sources, should be reevaluated. Includes 42 references, tables, figures.