第2阶段消毒剂/消毒副产品规则（DBPR）将呈现 许多饮用水公用事业的合规性挑战。连续饮用水系统将 尤其容易受到这些挑战的影响。美国水利工程协会 研究基金会（AWWARF）和美国环境保护署（UEPA）联合 资助项目#3026，“DBP和前体发生的消毒实践评估” 在连续的系统中。“这项将近三年的努力的目的是确定影响因素 这对连续系统中消毒副产物（DBP）的形成影响最大 （CSs）并确定有效的控制策略，以减少CSs中DBP的形成。它被发现了 无论采用何种消毒策略，三卤甲烷（THM）都是主要的DBP 在CS分布系统中形成的物种。据观察，平均约60至65岁 观察到的最大DBP浓度百分比是在水处理厂中形成的 75%到80%是在交付到连续系统之前形成的。 这 强调治疗优化在控制DBP中的重要性，在许多情况下 可能会降低被确定为最佳的水龄管理策略的有效性 第2阶段DBPR中连续系统的可用技术（BAT）。包括参考资料、表格、图表。

The Stage 2 Disinfectants/Disinfection Byproducts Rule (DBPR) will present a compliance challenge for many drinking water utilities. Consecutive drinking water systems will be particularly susceptible to these challenges. The American Water Works Association Research Foundation (AwwaRF) and the U.S. Environmental Protection Agency (USEPA) jointly funded Project # 3026, "Evaluation of Disinfection Practices for DBP and Precursor Occurrence in Consecutive Systems." The purpose of this nearly three year effort was to identify the factors which most significantly impact disinfection byproduct (DBP) formation in consecutive systems (CSs) and determine effective control strategies to reduce DBP formation in CSs. It was found that, regardless of the disinfection strategy, trihalomethanes (THMs) were the predominant DBP species formed in CS distribution systems. It was also observed that on average about 60 to 65 percent of the maximum DBP concentrations observed were formed in the water treatment plant and 75 to 80 percent were formed before the point of delivery to the consecutive system. This emphasizes the importance of treatment optimization in controlling DBPs, and in many cases may reduce the effectiveness of water age management strategies which were identified as best available technology (BAT) for consecutive systems in the Stage 2 DBPR. Includes reference, tables, figures.