美国水务公司（AWWC）调查了美国环境保护局（USEPA）安全饮用水信息系统（SDWIS）数据库中包含的饮用水违规信息，发现公司记录、各州记录和联邦SDWIS数据库之间存在许多差异。AWWC系统SDWIS中显示的大多数监控和报告违规行为被发现是错误的。SDWIS中的错误和差异有多种原因，具体取决于州数据系统和水系统的类型。为了纠正当前的错误，防止未来的错误，并向公众提供有用的信息，水务公司、各州和美国环保局需要改变他们现在收集、管理和显示饮用水合规信息的方式。

The American Water Works Company (AWWC) investigated drinking water violations information contained in the US Environmental Protection Agency's (USEPA) Safe Drinking Water Information System (SDWIS) database and found many discrepancies between company records, the states' records, and the federal SDWIS database. The majority of the monitoring and reporting violations shown in SDWIS for AWWC systems were found to be erroneous. There are varied reasons for the errors and discrepancies in SDWIS depending on the state data system and the type of water system. In order to correct current errors, prevent future errors, and provide useful information to the public, water utilities, states, and USEPA will need to change the way they now collect, manage, and display drinking water compliance information.