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Water Supply


Imported Water

The majority of EMWD’s potable (drinking) water demand is supplied by imported water from The Metropolitan Water District of Southern California through its Colorado River Aqueduct and its connections to the State Water Project.



Approximately 20 percent of EMWD’s potable (drinking) water demand is supplied by EMWD groundwater wells. The majority of the groundwater produced by EMWD comes from its wells in the Hemet and San Jacinto area. Some of these wells have limited production as a result of the Fruitvale Judgment and Decree. EMWD also has wells in the Moreno Valley, Perris Valley and Murrieta areas.


Sustainable Groundwater Management Act

The Groundwater Sustainability Plan Public Draft is ready for review (Program Documents)

The objective of SGMA is sustainable groundwater management in a manner that prevents significant and unreasonable impacts to groundwater basins in California. Under SGMA, each high and medium priority basin, as identified by the California Department of Water Resources (DWR), is required to have a Groundwater Sustainability Agency (GSA) that will be responsible for groundwater management and development of a Groundwater Sustainability Plan (GSP). EMWD Board of Directors is the GSA for the West San Jacinto Groundwater Basin and is responsible for development and implementation of a GSP.

Attn: Rachel Gray
Water Resources Planning Manager
P.O. Box 8300
Perris, CA 92572-8300

Hemet-San Jacinto Watermaster

The Hemet‑San Jacinto Watermaster (Watermaster) is a judicial creation of the Superior Court of the State of California in and for the County of Riverside through the Stipulated Judgment entered on April 18, 2013 (Riverside County Superior Court Case No. RIC 1207274).  The Stipulated Judgment declares individual rights of Eastern Municipal Water District (Eastern), Lake Hemet Municipal Water District (Lake Hemet), City of Hemet (Hemet), City of San Jacinto (San Jacinto) and other private groundwater pumpers to Groundwater in the Canyon Subbasin, the San Jacinto Upper Pre