在过去的十年里，科罗拉多州丹佛以南的郊区经历了一些 美国人口增长最快。这一增长给阿拉帕霍水和废水管理局（ACWWA）和棉白杨水和废水管理局带来了重大挑战 环卫区（CWSD）向其社区提供水和废水服务。ACWWA和CWSD均依赖其服务区下方的深层地下水供水 补给。他们在Cherry Creek也拥有有限的地表和浅层冲积水权利 流经他们的社区。 然而，由于含水层水位下降、水质问题、干旱条件和Cherry Creek水权，本文讨论了ACWWA和CWSD如何评估四种替代方案，以满足其未来的用水需求。其中包括完整的 深层地下水的使用、完全非饮用水再利用、其他深层地下水的进口和间接饮用水再利用。通过这些评估，ACWWA和CWSD开始制定实施计划 一个每天1800万加仑的间接饮用水再利用系统，为他们的社区服务。 这个 系统中，采用“联合净水项目”（JWPP）的名称将增加他们的用水 从Cherry Creek供应、生产安全饮用水，并减少对深水的依赖 地下水，从而延长该水源的寿命。本文讨论了JWPP遇到的体制、财务、技术和公众接受问题。包括数字。

During the last ten years, the suburban area south of Denver, Colorado has experienced some of the fastest population growth in the U.S. This growth has resulted in significant challenges for The Arapahoe Water and Wastewater Authority (ACWWA) and the Cottonwood Water and Sanitation Districts (CWSD) in providing water and wastewater service to their communities. Both ACWWA and CWSD rely on deep groundwater beneath their service areas for their water supplies. They also have limited surface and shallow alluvial water rights in Cherry Creek which flows through their communities. However, due to a combination of aquifer water levels dropping, water quality issues, drought conditions, and Cherry Creek Water Rights, this paper discusses how ACWWA and CWSD have evaluated four alternatives to meet their future water needs. These include full use of deep groundwater, full non-potable water reuse, importation of other deep groundwater, and indirect potable reuse. As a result of these evaluations, ACWWA and CWSD began developing plans for implementing an 18 million gallons per day indirect potable reuse system to serve their communities. The system, adopting the name "Joint Water Purification Project" (JWPP) will increase their water supplies, produce safe drinking water from Cherry Creek, and reduce reliance on deep groundwater, thus extending the life of that source. The paper discusses the institutional, financial technical and public acceptance issues that JWPP encountered. Includes figures.