Sources
The water comes from both local and imported sources. Local water comes from the District’s eight water wells. These wells pump water from a large underground aquifer that underlies most of northern Orange County. The District obtains approximately half of the water our customers need from the wells.
Most of the remainder of the water we need comes from the Colorado River, via the Colorado River Aqueduct. The Sierra Nevada Mountains in northern California also provides water to Orange County via the California Aqueduct.
Local Wells
The District’s wells tap an underground aquifer that underlies most of northern Orange County. The aquifer is carefully managed by the Orange County Water District, and is replenished by water from the Santa Ana River, local rainfall, and surplus water purchased from imported sources.
The District’s groundwater sources are: Well No. 1, Well No. 5, Well No. 7, Well No. 10, Well No. 12, Well No. 18 are located within Placentia city limits; Well No. 11 and Well No. 15 are located within Anaheim city limits. A new well located in Placentia, Well 19, has been drilled, and began operating in fall of 2007.
Imported Water
Yorba Linda Water District obtains the remainder of the water our customers need from local wholesaler Municipal Water District of Orange County (MWDOC). MWDOC obtains water from regional supplier Metropolitan Water District of Southern California (MWD). MWD obtains water from northern California via the California Aqueduct, and from the Colorado River via the Colorado River Aqueduct.
MWD owns and operates the Robert B. Diemer water treatment plant located just north of western Yorba Linda where the water is treated to meet drinking water standards.
