第2阶段消毒剂和消毒副产品规则（D/DBPR）将要求 社区供水系统进行初始配水系统评估（IDSE）。 IDSE旨在确定水域内的新合规监测点 更准确地反映高总三卤甲烷（TTHM）和卤乙酸（HAA5）的分布系统 级别高于当前用于法规遵从性的网站。它们将基于 系统特定监控或其他系统特定数据，提供同等或更好的 关于选址的信息。系统将推荐新的或修订的监测点 根据他们的IDSE研究向他们的州/首要机构提交。 对于没有DBP形成问题的系统，进行广泛的监测 满足IDSE要求的程序可能不会产生多少有价值的成本信息 招致。在这种情况下，通过建立一个系统，供水设施可能会得到更好的服务 除了满足以下条件外，还能产生对公用事业有用的信息的具体研究: IDSE的要求。 代替进行广泛的监控计划，以识别配电系统 科罗拉多州戈尔登市（City of Golden，Colorado）在DBP水平较高的地区实施了一项系统 第2阶段规则允许的具体研究。这项研究将提供可比或可比的结果 针对高DBP水平的新监测点的优越选择。为了 要实现这一目标，必须了解两个主要组成部分:水质变化 以及分配系统中的液压条件。 本文将介绍用于预测的综合水力和水质模型 黄金分配系统中的DBP形成。本文还重点讨论了 配电系统建模，以及运营问题。关于Golden， 讨论了新监测点选择的结果。最后是建议 为考虑IDSE系统特定研究的其他实用程序提供。

The Stage 2 Disinfectants and Disinfection Byproducts Rule (D/DBPR) will require Community Water Systems to conduct an Initial Distribution System Evaluation (IDSE). The IDSE is intended to identify new compliance monitoring sites within the water distribution system that more accurately reflect sites representing high total trihalomethanes (TTHM) and haloacetic acids (HAA5) levels than those sites currently used for compliance. They will be based either on system specific monitoring or other system specific data that provides equivalent or better information on site selection. Systems will recommend new or revised monitoring sites to their State/Primacy Agency based on their IDSE study. For systems without DBP formation problems, conducting an extensive monitoring program to meet the IDSE requirements may yield little valuable information for the cost incurred. Water utilities in this situation may be better served by conducting a system specific study that produces information useful to the utility beyond fulfilling the requirements of the IDSE. In lieu of conducting an extensive monitoring program to identify distribution system locations with high DBP levels, the City of Golden, Colorado has conducted a system specific study as allowed by the Stage 2 Rule. This study will provide comparable or superior selection of new monitoring sites that target high DBP levels. In order to achieve this goal, two primary components must be understood: water quality changes and hydraulic conditions in the distribution system. This paper will present the integrated hydraulic and water quality model used to predict DBP formation in the Golden distribution system. This paper also focuses on distribution system modeling, along with operational issues. With regards to Golden, results of new monitoring site selection are discussed. Finally, recommendations are given for other utilities considering IDSE system specific studies.