The Reliability Improvement Project is aimed at retrofitting, upgrading and/or replacing key equipment that is reaching the end of its natural life, addressing the areas of raw water ozone, flocculation and sedimentation. Filtration and redundant disinfection.
The work will also increase the plant’s treatment capacity from 80 million gallons of water a day to 100 million gallons a day and help the district meet increasingly stringent standards for water quality, seismic stability and safety.








Valley Water hosted Aug. 18, 2021 virtual public meeting on upcoming construction
Site improvements and upgrades to the way the Rinconada Water Treatment manages sludge are coming this fall. On Aug. 18, 2021, Valley Water hosted a virtual public meeting that focused on these two new projects. If you missed the meeting, you can view it at the following link on Valley Water's You Tube channel:
Public meeting videos available on You Tube
Valley Water keeps a video library of its past community meetings on its You Tube channel at https://www.youtube.com/watch?v=K1jDvRO4q2A
For any questions, please contact the water treatment plant's neighborhood liaison, Tony Mercado, at 408-630-2342 or via email at [email protected]
The Reliability Improvement Project will replace or upgrade all major plant components and increase Rinconada’s treatment capacity to 100 million gallons of water a day. These enhancements will also result in improved taste for your drinking water. The Project includes the design and construction of new facilities, including raw water ozonation, flocculation and plate settler clarification and dual media filtration. This work will also help the district meet increasingly stringent standards for water quality, seismic stability and safety.
This completed project will use the following steps in drinking water treatment:
- Raw Water Ozone
- Flocculation and Sedimentation
- Filtration
- Redundant disinfection
The Rinconada Water Treatment Plant is Valley Water’s oldest treatment plant, having provided continuous and reliable service since 1967. While Rinconada primarily serves the west side of Santa Clara County, residents across the county contribute to the project funding through water rates.