本powerpoint演示文稿介绍了一项研究，以记录 消毒剂在分配上的变化 系统水质。进行了文献检索，并对15个州、华盛顿特区和不列颠哥伦比亚省的26家公用事业公司进行了消毒实践变化的调查，包括:氯变成氯胺； 氯转化为臭氧； 氯转化为二氧化氯； 氯对紫外线（UV）；和 添加增压氯化。该演示文稿提供了有关这些消毒实践对水质、消毒副产品、微生物、腐蚀和美观的影响的信息。潜在的应用包括:评估当前的变化； 进行业务调整； 考虑未来的变化； 设计未来的变化；和 诊断水质问题。

This powerpoint presentation presents a study to document the long-term effects of disinfectant changes on distribution system water quality. A literature search was done, and 26 utilities in 15 states, Washington, D.C., and British Columbia were surveyed on changes in disinfection practices including: chlorine to chloramines; chlorine to ozone; chlorine to chlorine dioxide; chlorine to ultraviolet (UV); and, adding booster chlorination. The presentation provides information on the impact that each of these disinfection practices has on water quality, disinfection byproducts, microbes, corrosion, and aesthetics. Potential applications include: evaluating current changes; making operational adjustments; considering future changes; designing future changes; and, diagnosing water quality problems.