Delivering the highest standard of water quality, reliability and safety.

As the Tri-Valley region’s water wholesaler, we work with our water retailers to ensure the people of eastern Alameda County are taken care of.


Kids Zone

Educating Future Generations

Check out our educational resources curriculum for first through eighth grades and learn about new and ongoing initiatives to further improve water quality.

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One of the best ways to cut down on water costs and maintenance is to replace your grass or turf with water-wise and native plants!

Northern California Drought Update

The Tri-Valley has received just 40% of our average amount of rainfall this season.

Did you know most of the Tri-Valley’s water comes from outside our region?

On average, 70% of our water supply is imported surface water through the South Bay Aqueduct.