1999年10月，AWWA工程和计算机应用委员会（ECAC）委托开展了一项关于水网建模实践的调查。本次调查的目的有三:为修订WWA的《供水实践手册》提供最新信息，供水设施的配电网分析（32）；评估当前使用计算机模拟配水系统的兴趣和活动水平，包括水质行为，并确定潜在趋势； 此外，确定并与AWWA成员分享水质建模在配电系统中的一些有趣且可能具有创新性的应用。这项调查已分发给加拿大和美国的989家公用事业公司。通过审查AWWA的数据库选择公用设施，以选择服务人口超过35000人的公用设施。174家公用事业公司回复，回报率为18%。本报告介绍了调查结果。涵盖的主题包括:平均日需求； 水源信息；分销系统信息；压力区；服务压力；二级消毒剂；水质问题；水力模型；模型信息的来源；校准信息；以及储罐和储层建模。包括表格、数字。

In October 1999, the AWWA Engineering and Computer Applications Committee (ECAC) commissioned a survey on Water Network Modeling practices. The objectives of the survey were threefold: to provide up to date information for the revision ofAWWA's Manual of Water Supply Practices, Distribution Network Analysis for Water Utilities (32); to gauge the current level of interest and activity in using computers to model water distribution systems, including the behavior of water quality, and identify potential trends; and, to identify and share with AWWA members some interesting and possibly innovative applications of water quality modeling in distribution systems. The survey was distributed to 989 utilities in Canada and the United States. Utilities were selected via a review of AWWA's databases to select utilites serving populations greater than 35,000 people. 174 utilities responded, which represents an 18 percent return rate. This report presents the results of the survey. Topics covered include: average day demand; source water information; distribution system information; pressure zones; service pressures; secondary disinfectants; water quality problems; hydraulic modeling; sources of model information; calibration information; and, tank and reservoir modeling. Includes tables, figures.