市政供水和废水系统已被证明是地方政府单位最大的能源消耗者。通过对密歇根州四家公用事业公司的单元工艺进行研究，作者们能够指出几个可以实现可观节能的领域。最大的节约机会是为水系统抽水，为污泥加热和废水系统焚烧提供曝气鼓风机驱动的电力和天然气。包括4个参考文献、表格。

Municipal water and wastewater systems have been shown to be the largest energy consumers by local units of government. By studying unit processes at four utilities in the state of Michigan, the authors were able to pinpoint several areas in which sizable energy savings could be realized. The greatest conservation opportunities are in pumping electricity for water systems and in aeration blower drive electricity and natural gas for sludge heating and incineration for wastewater systems. Includes 4 references, tables.