The Santa Teresa Water Treatment Plant is one of three water treatment plants in the Santa Clara Valley Water District’s system. It produces safe drinking water for most of South San Jose - Almaden Valley, Blossom Valley and Santa Teresa - supplying water to residential and commercial users. The plant can also serve the majority of the Penitencia Water Treatment Plant’s service area when needed.
As the largest of Valley Water’s three treatment plants, Santa Teresa can treat and deliver up to 100 million gallons of water per day. Most of the water coming into this plant is imported from San Luis Reservoir, a key component of the federal Central Valley Project. Water from the Sacramento-San Joaquin Delta is pumped into the Delta-Mendota Canal and then into the San Luis Reservoir. Valley Water is one of many users that draw water from this reservoir. The Santa Teresa Water Treatment Plant is also fed from Valley Water’s local supplies at Anderson and Calero reservoirs.
The Santa Teresa Water Treatment Plant opened in 1989, integrating the use of ozone into its water treatment process in 2006 to improve its drinking water quality. Ozone is an excellent addition to the drinking water treatment process because it is a very strong disinfectant yet creates less disinfection byproducts than chlorine. Disinfection byproducts at high levels can be a health concern.
Contact information
If you have any questions or concerns about the Santa Teresa Water Treatment Plant, please contact Neighborhood Liaison Aimee Green at 408-630-2342 or via email at [email protected].
Valley Water is committed to providing a healthy, clean, reliable and affordable water supply that meets or exceeds all applicable water quality regulatory standards in a cost-effective manner.