面对不断下降的客户群、不断增加的运营成本以及不断增加的资本和融资需求，费城水务局制定了一项五年财务管理计划来削减成本。该计划的一个方面包括通过使用非高峰抽水和高位蓄水来控制能源费用。该计划实施一年后，尽管电价上涨，该部门还是节省了200万美元。包括表格、数字。

Faced with a declining customer base, increasing operations costs, and increasing capital and financing requirements, the Philadelphia Water Department devised a five-year financial management plan to trim costs. One aspect of the plan included the control of energy expenses through the use of off-peak pumping and elevated storage. One year after the program was implemented, the department achieved a savings of $2 million-in spite of increases in electrical rates. Includes tables, figures.