Western is one of the largest public agencies in Riverside County providing water, wastewater (sewer), and recycled water services to nearly 1 million people, both wholesale and retail customers, across 527-square miles in western Riverside County.

Providing customers with an exceptional customer experience is our top priority, and we do this by pairing consistent delivery of safe, reliable drinking water and wastewater services with outstanding customer service. We view our customers as essential partners in ensuring long-term water security for our region.

Western has been serving the community since 1954, providing reliable water and wastewater services to wholesale and retail customers from Corona to Temecula. This regional area includes the cities of Corona, Norco and Riverside and the water agencies serving Box Springs, Eagle Valley, Lake Elsinore, Temescal Valley and Temecula.

Western directly services approximately 25,000 residential and business retail connections located within portions of the cities of Riverside and Perris, as well as the unincorporated communities of El Sobrante, Eagle Valley, Lake Mathews, portions of Mead Valley and March Air Reserve Base.

In 2005, with the merger of Murrieta's water utility agency, Western began serving a 6.5-square mile section of western Murrieta, primarily in the historic downtown area of the city.

Rainbow is Western’s most distant served community is an unincorporated area of southern Riverside County bordering San Diego County.