大辛辛那提水厂（GCWW）为居住在俄亥俄州西南部汉密尔顿、沃伦和巴特勒县的90多万用户提供优质水。由于最近的扩建活动，该公用事业公司还将在2003年初之前向肯塔基州北部的布恩县和佛罗伦萨供水。GCWW的供水水源包括俄亥俄河、大迈阿密河埋藏山谷含水层和沙克尔溪含水层。本文概述了公用事业公司如何在这三个不同的水源地管理水源保护。水源保护工作通过GCWW水质和处理部门（WQ&T）进行协调。WQ&T的主要责任是确保所有三个处理厂都符合联邦和州法规。在过去的15年里，这一责任已经演变并扩大到包括地表水和两个地下水源的水源保护。 本文讨论了成功保护的关键是如何通过广泛的区域和市政合作。包括4个参考文献、图表。

The Greater Cincinnati Water Works (GCWW) provides high quality water to over 900,000 customers residing in Hamilton, Warren and Butler Counties located in southwestern Ohio. As a result of recent expansion activities, the utility will also be providing water to Boone County and Florence in northern Kentucky by early 2003. Water supply sources for the GCWW include the Ohio River, the Great Miami River Buried Valley Aquifer and the Shaker Creek Aquifer. This paper presents a general overview of how the utility manages source water protection at these three different sources of supply. Source water protection efforts are coordinated through the GCWW Water Quality and Treatment Division (WQ&T). WQ&T's principal responsibility is to ensure that all of the three treatment plants are in compliance with federal and state regulations. Over the past 15 years this responsibility has evolved and expanded to include source water protection for it's surface water and two groundwater sources. The paper discusses how the key to successful protection is through extensive regional and municipal cooperation. Includes 4 references, figures.