美国环境保护局要求 紫外线（UV）反应器性能验证 公共供水系统用于控制 隐孢子虫等病原体。美国水供应商 以大肠杆菌噬菌体MS2为挑战验证反应器 替代品，但MS2明显更耐紫外线 而不是隐孢子虫。 用紫外线识别替代微生物 与隐孢子虫相似的剂量反应 研究确定了10种噬菌体的剂量反应 并研究了噬菌体在体内的稳定性 存在和不存在三种紫外线的地下水 吸收器。T8和T7的结果表明 紫外线剂量反应几乎与 隐孢子虫；Q比隐孢子虫更具抗性 但不如MS2。使用代理 其紫外线剂量响应与目标类似 有机体有几个优点，包括更好的 所需还原当量剂量的估算； 减少紫外线反应器的所需尺寸；和 降低了资本、运营和维护成本 公用事业。包括29个参考文献、表格和图表。

The U.S. Environmental Protection Agency requires validation of the performance of ultraviolet (UV) reactors used by public water systems for controlling pathogens such as Cryptosporidium. U.S. water suppliers validate reactors using coliphage MS2 as the challenge surrogate, but MS2 is significantly more UV-resistant than Cryptosporidium. To identify a surrogate microbe with a UV dose-response similar to that of Cryptosporidium, this research determined the dose-responses of 10 bacteriophages and investigated the stability of the phages in groundwaters in the presence and absence of three UV absorbers. Results indicated that T7 and SP8 demonstrated UV dose-responses nearly identical to that of Cryptosporidium; Q? was more resistant than Cryptosporidium but less so than MS2. Use of a surrogate that has a UV dose-response similar to the target organism offers several advantages, including better estimation of the required reduction equivalent dose; reduction in the required size of UV reactors; and decreased capital, operations, and maintenance costs for utilities. Includes 29 references, tables, figures.