作者研究了如何为交付的产品获得最佳收益。这篇论文回顾了为什么维护不善和缺乏测试成本，公用事业不仅在水资源收入上损失了美元，而且在下水道收入上也损失了美元，因为下水道收入通常与用水量有关。给出了代表收入损失幅度的数字。还介绍了商用和工业水表的现场测试和维护程序。

The author examines how to get the optimum revenue for the product delivered. The paper reviews why poor maintenance and lack of testing costs utilities lost dollars, not only in water revenue, but also in sewer revenue because sewer revenue is usually tied to water consumption. Figures that represent the magnitude of lost revenue are given. Procedures used for onsite testing and maintenance of commercial and industrial water meters are also presented.