曼彻斯特镇保留了Tighe&Bond/CH2M HILL团队，以开发一个计算机网络模型，该模型将准确模拟现有供水和分配系统的水力和水质条件。建模结果用于制定建议的资本和运营改进计划并确定其优先级。长期资本和运营改进计划包括更换超过67英里的总水管，安装超过2英里的新总水管，估计费用为3070万美元。改进计划基于几个评估标准，包括水质问题，如水龄、管道龄和余氯。 本文重点介绍水质分配系统模型的开发和校准、水质建模的结果，以及如何将这些结果纳入建议的资本和运营改进计划。包括参考资料、表格、图表。

The Town of Manchester retained the team of Tighe & Bond/CH2M HILL to develop a computerized network model that would accurately simulate the hydraulics and water quality conditions of the existing water supply and distribution system. The modeling results were used to develop and prioritize a recommended capital and operational improvements program. The long term capital and operational improvements program included replacement of over 67 miles of water main and installation of over 2 miles of new water main at an estimated cost of $30.7 million. The improvements program was based on several evaluation criteria, including water quality issues such as water age, pipe age, and chlorine residual. This paper focuses on the development and calibration of the water quality distribution system model, the results of water quality modeling, and how those results were incorporated into the recommended capital and operational improvements program. Includes reference, tables, figures.