Riverside County Water Projects

Ensuring quality water for residents


Providing Solutions for Drought-Related Concerns

Geographically, Riverside County is mostly desert. With a population of more than 2.4 million residents living amongst rolling plains, mountains and river valleys, Riverside County water projects take on challenges to keep quality water supplied to both rural and urban areas.

The La Sierra Pipeline is an ambitious capital improvement project in the works since 2017. It aims to provide safe and reliable locally-sourced, drought-resistant drinking water to the region. As part of its final phase, it will connect to the Sterling Pump Station and Arlington Desalter allowing water to be pumped and delivered to approximately 80,000 customers.

Catching the rain that does fall on the county, it’s then put to good use with The Enhanced Stormwater Capture and Recharge Project (Recharge Project) on the Santa Ana River near the Seven Oaks Dam. Rather than losing water to evaporation and runoff, the Recharge Project uses Santa Ana River water to replenish sedimentation basins capable of handling 500 cubic feet per second. Those waters then seep into groundwater basins that are later pumped and conveyed to local water agencies. Riverside County extracts its water from three groundwater basins: Bunker Hill Basin in San Bernardino, Rialto Colton Basin in Colton, and the Riverside Basin. These are usually filled by rain and snowmelt, but at a slower pace due to drought conditions. With the Recharge Project and other conservation efforts, annual analysis of groundwater levels by local water agencies shows significant increases over the past 10 years throughout most of the Coachella Valley.

In the City of Riverside, projects such as the Jackson Street Recycled Water Pipeline Project will add approximately 26,000 linear feet of 8-inch and 24-inch diameter pipeline to provide an estimated 821 acre foot a year (AFY) of recycled water to existing and future customers along its path. The project improves water supply by reducing the amount of water discharged into the Santa Ana River.

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