El Dorado灌溉区（EID）从事水回收业务已经超过20年 20年。1979年，EID将经过二级处理的污水输送到高尔夫球场进行灌溉和灌溉 木材磨坊，用于木材浇水。1989年，一位开发商提出了回收利用的建议 来自另一个污水处理厂的水，用于拟建的主要高尔夫球场。这个项目 于1992年完工。如今，这两个配电系统相互连接并提供电力 经三级处理的循环水，用于两个高尔夫球场、60多个商业场地和1200个 “双管道”住宅在前院和后院的绿化中使用循环水。本文讨论了这个成功的循环水项目的开发和实施。

The El Dorado Irrigation District (EID) has been in the water recycling business for over 20 years. In 1979 EID served secondary treated effluent to a golf course for irrigation and a lumber mill for log watering. In 1989, a developer stepped forward with a proposal to recycle water from another wastewater treatment plant for a major proposed golf course. This project was completed in 1992. Today, these two distribution systems are connected and deliver tertiary treated recycled water to two golf courses, more than 60 commercial sites, and 1,200 "dual plumbed" homes using recycled water in both front and back yard landscaping. This paper discusses the development and implementation of this successful recycled water program.