美国环境保护局（USEPA）正在制定一项规则，涵盖地下水供应和消毒副产品（DBPs）的消毒。该规定预计将迫使消毒处理实践发生重大变化。本文介绍了该规则的关键要素，以及AWWA技术咨询工作组（TAW）的工作，该工作组负责解决即将出台的规则的要素。描述了南加州大都会水区在管理TAW中的作用，以及TAW正在承担的各种任务。此外，还讨论了近期调查和研究项目的结果，这些项目调查了为预测该规则而采取的水资源利用行动。 包括21个参考文献、表格和图表。

The US Environmental Protection Agency (USEPA) is developing a rule covering disinfection of groundwater supplies and disinfection by-products (DBPs). The rule is expected to force major changes in disinfection treatment practices. This article describes the critical elements of the rule as well as the work of an AWWA Technical Advisory Workgroup (TAW) assigned to address elements of the forthcoming rule. The role of the Metropolitan Water District of Southern California in managing the TAW is described, along with the various tasks being undertaken by the TAW. Also discussed are results of recent surveys and research projects investigating water utility actions to anticipate the rule. Includes 21 references, table, figures.