这篇文章讨论了运行和维护水务设施所涉及的能源成本。为了调查节能机会，对美国最大的投资者拥有的水务公司美国供水系统（AWS）进行了能源调查。对三个具有代表性的AWS供水系统进行了能源审计。为了估算全系统的节能，使用全系统调查的信息推断了三次能源审计中推荐的节能措施。描述了每种节能措施类别的外推程序，以及三次审计的结果。还显示了全系统潜在的能源节约和实现这些节约的估计资本成本。勘误表——在本文中，第42页和第45页上的照片位置不正确。第42页的照片显示了双泵驱动； 第45页显示的是变频驱动器。包括7个参考文献和表格。

This article discusses the energy costs involved in the operation and maintenance of a water utility. To investigate energy saving opportunities, an energy survey of the largest investor-owned water utility in the United States, the American Water System (AWS), was conducted. Energy audits were performed at three representative AWS water supply systems. To estimate systemwide energy savings, recommended energy conservation measures from the three energy audits were extrapolated using information from the systemwide survey. The extrapolation procedures for each energy conservation measure category are described along with results from the three audits. The systemwide potential energy savings and the estimated capital costs to achieve them are also shown. Erratum -- In this article the photographs on pages 42 and 45 were incorrectly placed. The photograph on page 42 shows dual pump drives; the one on page 45 shows variable-frequency drives. Includes 7 references, tables.