这项研究监测了费城成品水中的消毒副产物（DBP）浓度，以确定它们在处理后的水储存和流经分配系统时的变化。到目前为止，美国的大多数DBP研究都集中在污水处理厂的工艺和离开工厂时水中DBP的浓度上。已经开发了模型来预测给定的一组进水水质数据、WTP工艺配置和化学品剂量参数下的工厂废水DBP水平。可获得的配电系统DBP数据少得多，将DBP形成模型扩展到配电系统的尝试取得了有限的成功。配电系统DBP的大多数大型数据集与三卤甲烷（THM）测量有关。在这项研究之前，关于费城配电系统中DBP的信息仅限于THM数据。本研究通过在工厂废水中取样，研究滞留时间对配水系统中DBP浓度的影响； 停留时间短、中、长的地点；在坦克、水库和可疑的死胡同。在所有样本上测量水质参数和消毒剂残留水平，以检查其效果。研究设计没有考虑基础设施材料和条件。包括桌子。

This study monitored disinfection byproduct (DBP) concentrations in Philadelphia's finished waters to determine how they change as treated water is stored in, and travels through the distribution system. To date, most DBP research in the United States has focussed on treatment plant processes and concentrations of DBPs in water as it leaves the plant. Models have been developed to predict plant effluent DBP levels for a given set of influent water quality data, WTP process configurations, and chemical dosage parameters. Much less distribution system DBP data are available, and attempts to extend DBP formation models into the distribution system have had limited success. Most large data sets for distribution system DBPs are related to compliance trihalomethane (THM) measurements. Prior to this study, information about DBPs in Philadelphia's distribution system was limited to THM data. This study investigated the influence of detention time on DBP concentrations in the distribution system by sampling at plant effluents; at locations characteristic of short, medium, and long residence times; and at tanks, reservoirs, and suspected dead-ends. Water quality parameters and disinfectant residual levels were measured on all samples to examine their effects. The study design did not consider infrastructure materials and conditions. Includes tables.