SPI Insights

California — The Sacramento Regional County Sanitation District (Regional San) received a $227.5 million boost to help construct the Harvest Water Program, a conjunctive-use project that will supply treated wastewater to agricultural lands and provide wildlife habitats in southern Sacramento County.

This is the first project in the Water Storage Investment Program (WSIP) to complete Proposition 1 requirements and appear before the California Water Commission. Prop. 1, also known as the Water Quality, Supply and Infrastructure Improvement Act of 2014, dedicated $2.7 billion for investments in the public benefits of water storage projects.

Seven WSIP projects have the potential to add 2.77 million acre-feet in statewide water storage capacity.

Two other WSIP projects include:

• Willow Springs Water Bank (WSWB) Conjunctive Use Project under the Southern California Water Bank Authority. The project is estimated to cost $343 million and will begin in 2025. The existing facility, located in the adjudicated Antelope Valley Groundwater Basin, will be integrated into the State Water Project (SWP) reservoir and conveyance system with south‐of‐Delta groundwater storage. The project will leverage 500,000-acre feet (TAF) of existing groundwater storage facilities and operate conjunctively with the SWP and provide ecosystem benefits north of the Delta.
• Chino Basin Conjunctive Use Environmental Water Storage/Exchange Program will begin in 2028 and has an approximate budget of $385 million. The improvements will construct an advanced water treatment facility (AWTF) and distribution facilities that would store up to 15,000 acre-feet (TAF) per year of treated wastewater in the Chino Basin Water Bank (CBWB).