Water Sources

Fontana Water Company’s water supply is produced from Lytle Creek surface flow, and from wells in the Lytle Basin, Rialto Basin, Chino Basin, and another groundwater basin known as No Man’s Land. Water from the California State Water Project is purchased from the Inland Empire Utilities Agency and San Bernardino Valley Municipal Water District. A portion of the water supply can be purchased from Cucamonga Valley Water District during water shortages or under emergency situations.

Lytle Creek surface flow begins at the Intake, located in the Lytle Creek Canyon north of Fontana Water Company’s service area. Water from Lytle Creek is diverted into the “upper penstock” pipeline where it flows by gravity to the Afterbay.

The Afterbay, is a diversion facility located immediately downstream from Southern California Edison Company’s hydroelectric power plant. Once surface water enters the Afterbay, it is delivered by pipeline to Fontana Water Company’s Sandhill Surface Water Treatment Plant, where it is blended with water from the California State Water Project for treatment and disinfection before entering the distribution system.

Additionally, Fontana Water Company produces groundwater from 29 wells in and around the City of Fontana and more specifically located in the Lytle Basin, Rialto Basin, Chino Basin and No Man’s Land.

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