El Dorado Irrigation District is a public agency located in Placerville, California, and serves 214 square miles of central and western El Dorado County. EID also provides services to 2 remote satellite areas - Outingdale and Strawberry.

The District was established on October 5, 1925, and today serves approximately 29,800 accounts with treated water, 12,850 wastewater accounts and over 1500 reclaimed water accounts. As a public entity, it is in effect, owned by its resident electors — each of which is responsible for electing the governing Board and influencing the direction of the Districts' operations.

Annually, EID produces approximately 25,350 acre feet of treated water, which it receives from three sources and treats approximately 5.2 million gallons of sewage daily at its two wastewater treatment plants. The water reclaimed from its wastewater operations is either sold for turf and irrigation or is discharged into the Deer Creek basin to comply with requirements of the California Water Resources Control Board.

The District employs over 250 full-time permanent employees. Through its Recreation Department, the District operates Sly Park Recreation Area which was purchased from the United States Bureau of Reclamation (USBR) in 2003. Sly Park and Jenkinson Lake are located on Sly Park Road, five miles south of Pollock Pines and Highway 50. The District recently completed rebuilding its 20 megawatt hydroelectric powerhouse, located on the south fork of the American River.