Water Supply

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The water from EMWD comes from several sources:

Imported Water
Approximately 75% of EMWD’s potable water demand is supplied by imported water from Metropolitan Water District through its Colorado River Aqueduct and its connections to the State Water Project.

 Department of Water Resources

Ground Water
Contrary to the impression of groundwater being huge underground rivers and lakes, groundwater is the water that occupies the pores and cracks in soil and rock. The source of groundwater is either natural or artificial recharge. Natural recharge begins as rain or snow that seeps directly into the soil and rocks, or from rivers, streams, and lakes. Artificial recharge is the intentional recharge of water in ponds or spreading basins; or through the use of injection wells.

Groundwater Basins MapGroundwater Basins may be defined by geologic structures, such as earthquake faults or fault zones; or, they may be defined by administrative boundaries based on water quality or some other factor. Groundwater Flow MapGroundwater flow follows a path of least resistance (i.e. groundwater level gradient) to a point of equilibrium.

Approximately 25% of EMWD’s potable 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, where it is also served. 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.

More Information

Water Supply Conditions
Find out more by clicking on the links below:

Fruitvale Judgment and Decree

The Fruitvale Judgment and Decree (The City of San Jacinto, et al., v. Fruitvale Mutual Water Company, et al., No. 51546, Riverside County) was entered into Book 72, Page 164, of Judgment, Riverside County, on June 4, 1954. EMWD, as successor in interest to Fruitvale Mutual Water Company, is subject to the provisions of the Judgment and Decree.

As a result of the Judgment and Decree, the Fruitvale Mutual Water Company was ordered to prepare an annual report describing the actual number of acre feet of water pumped from the Canyon Basin and the actual number of acre feet pumped from the "Entire Basin" and transported out of the "Entire Basin." EMWD took over the preparation of the report when it acquired Fruitvale in 1972.

Some State & County Agencies with Water Resources Regulatory Authorities

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