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Western Municipal Water District was formed in 1954, and today provides reliable water and wastewater services to retail customers and wholesale agencies from Corona to Temecula. As a member agency of Metropolitan Water District of Southern California, the state’s largest water supplier, Western receives most of its water from the Sacramento-San Joaquin Bay-Delta and from the Colorado River. Most of the Delta water Western receives originates as snowpack in the Sierra Nevadas and travels 444 miles southerly to its final destination in Southern California homes and businesses. Slicing its way through a 200-plus mile journey, Colorado River water travels westward in the aqueduct built by Metropolitan in the 1930s.
The District has a groundwater supply in its Murrieta Division, which is combined with imported water for the region’s residents. Western also has rights to groundwater in the Bunker Hill Basin, which is transported into our Riverside Division through an agreement with the city of Riverside.
Western’s is committed to transparency and accountability.
Mission Statement
Western Municipal Water District provides water supply, wastewater disposal and water resource management to the public in a safe, reliable, environmentally sensitive and financially responsible manner.
Contact Us
(951) 571-7100
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