紫外线已被证明是原生动物囊肿的有效消毒剂，美国环境保护署目前正在制定饮用水应用的剂量要求。然而，建立紫外线剂量响应性能的大部分工作是使用过滤的饮用水或低浊度实验室级水获得的。为了解决该技术在未过滤供水中的性能问题，洛杉矶水电部、五家未过滤供水机构和MWH（蒙哥马利·沃森·哈扎）调查了浊度值在0.65到7 NTU之间的原水供水中微小隐孢子虫和鼠贾第鞭毛虫的灭活情况。一系列长凳- 为了研究紫外线在各种水质和操作条件下灭活小鼠贾第鞭毛虫和微小隐孢子虫的能力，进行了大规模准直束实验和为期六个月的中试规模研究。包括参考，表格。

Ultraviolet light has been shown to be an effective disinfectant for protozoan cysts and the US Environmental Protection Agency is presently establishing dose requirements for potable water applications. However, much of the work establishing UV dose-response performance was obtained using filtered potable water or laboratory-grade water of low turbidity. To address the performance of this technology for unfiltered supplies, the Los Angeles Department of Water and Power, five unfiltered water agencies, and MWH (Montgomery Watson Harza) investigated the inactivation of Cryptosporidium parvum and Giardia muris in raw water supplies with turbidity values ranging from 0.65 to 7 NTU. A series of bench-scale collimated beam experiments and a six month pilot-scale study were conducted to investigate the ability of UV light to inactivate Giardia muris and Cryptosporidium parvum under a variety of water quality and operational conditions. Includes reference, tables.