紫外线消毒为需要满足环境要求的公用事业提供了巨大的前景 长期强化地表水对隐孢子虫灭活的要求 治疗规则。紫外线消毒对贾第虫和贾第虫都非常有效 隐孢子虫以及其他微生物病原体。技术很紧凑， 价格低廉且易于操作。理论表明，紫外线消毒不会 促进消毒副产物的形成或为水提供足够的能量 创造新型消毒副产品；然而，还没有一项研究 在美国境内进行，以确定是否存在意外影响 由于紫外线消毒水对水质的长期影响 分配系统。 马萨诸塞州水资源管理局（MWRA）和马萨诸塞州康科德镇 与南内华达州水务局（SNWA）和波特兰 水务局，通过美国水厂研究基金会（AWWARF） 量身定制的合作项目正在评估臭氧的有效性，然后 中压紫外线（MP-UV）和仅中压紫外线 未过滤水源水和分布式水质的消毒。这项研究将 确定: 贾第虫、隐孢子虫和其他病原体的消毒效果（对数灭活） 人类肠道病毒，尤其是在冷水中；和 对消毒副产物形成、生物稳定性和腐蚀的协同影响 控制，还有红水。包括2个参考文献、表格和图表。

Ultraviolet light disinfection provides great promise for utilities that will need to meet the Cryptosporidium inactivation requirements of the Long Term 2 Enhanced Surface water Treatment Rule. Ultraviolet disinfection is very effective against both Giardia and Cryptosporidium as well as other microbiological pathogens. The technology is compact, inexpensive and easy to operate. Theory suggests that ultraviolet disinfection does not promote the formation of disinfection byproducts or impart enough energy to the water to create new types of disinfection byproducts; however, there had not been a study conducted within the United States to determine if there are unanticipated affects resulting from ultraviolet disinfection of water on the long term quality of the water in the distribution system. The Massachusetts Water Resources Authority (MWRA) and the Town of Concord, Massachusetts in coordination with the Southern Nevada Water Authority (SNWA), and the Portland Water Bureau, through an American Water Works Research Foundation (AwwaRF) Tailored Collaboration Project are evaluating the effectiveness of ozone followed by medium-pressure ultraviolet light (MP-UV) and of medium-pressure UV alone for disinfection of unfiltered source water and distributed water quality. This research will determine: disinfection effectiveness (log inactivations) of Giardia, Cryptosporidium and human enteric viruses, particularly in cold water; and, synergistic impacts on disinfection byproduct formation, biostability, corrosion control, and red water. Includes 2 references, tables, figures.