Patterson Pass Water Treatment Plant Tours!
Join us for a free tour of the recently upgraded water treatment facility.
The recently upgraded Patterson Pass Water Treatment Plant will be opening its doors to the public for in-person tours on June 17!
In June of 2022, the water treatment facility completed major construction upgrades to ensure we are delivering the highest quality water to the businesses and residents of the Tri-Valley.
Mocho Groundwater Demineralization Plant
The Mocho Groundwater Demineralization Plant began operating in August 2009 and is a very different kind of treatment plant than the Del Valle and Patterson Pass plants, which both treat imported surface water.
Del Valle Water Treatment Plant
The Del Valle Water Treatment Plant has been serving the Tri-Valley community since the 1970s and was recently upgraded to add raw water ozonation to the existing treatment process. The ozonation project is the latest investment by Zone 7 to support the continued delivery of high-quality water to Zone 7 customers.
Water Quality Lab at Del Valle Water Treatment Plant
Our state-of-the-art water quality lab is housed at the Del Valle Water Treatment Plant and run by expert water quality chemists and technicians willing to carry the weight of the world on their shoulders – or at least the weight of Tri-Valley’s water.
Patterson Pass Water Treatment Plant
The Patterson Pass Water Treatment Plant has been serving the Tri-Valley since 1962, treating imported surface water from the adjacent South Bay Aqueduct using dual-media filtration and chlorine treatment techniques. The plant has recently been upgraded to add ozone treatment. The plant capacity has also been expanded from 12 million gallons per day (mgd) to 24 mgd.
- Patterson Pass Water Treatment Plant Upgrades and Ozonation Project Brochure
- 2/6/2019 PPWTP Upgrades and Ozonation Project Board Presentation
- Patterson Pass Water Treatment Plant Upgrades and Ozonation Project: 2/16/22 Construction Progress Report
- Patterson Pass Water Treatment Plant One-Sheet
- Read more