1993年，国会指示美国环境保护局（USEPA）编写一份报告，审查各州和公共供水系统执行USEPA饮用水法规的技术和经济能力。作为报告的一部分，美国环保局被要求解决现行法规的成本和收益问题。美国环境保护局于1993年9月向国会提交了“查菲报告”——所谓“查菲报告”，是因为参议员约翰·查菲（R-RI）和弗兰克·劳滕伯格（D-NJ）撰写了要求提交报告的修正案。本文总结了报告中提供公共供水系统人口信息的部分，以及美国环境保护局对这些法规的成本和效益的估计。 包括12个参考文献、表格和图表。

In 1993 Congress directed the US Environmental Protection Agency (USEPA) to prepare a report examining the technical and economic capacity of states and public water systems to implement USEPA drinking water regulations. As part of the report, USEPA was required to address the costs and benefits of current regulations. USEPA submitted the "Chafee Report"--so called because Senators John Chafee (R-RI) and Frank Lautenberg (D-NJ) wrote the amendment that required it--to Congress in September 1993. This article summarizes the portions of the report that provide demographic information about public water systems and a summary of USEPA's estimates of the costs and benefits of those regulations. Includes 12 references, tables, figure.