Chain-of-Lakes (COL) PFAS Treatment Facility
In a continuing effort to supply the Tri-Valley with safe, reliable water that surpasses state and federal drinking water standards, Zone 7 is planning a water treatment system to address Per- and Polyfluoroalkyl substances (PFAS) found in the local groundwater at the Chain-of-Lakes (COL) Well site.
ABOUT THE PROJECT
- The project would add necessary water treatment facilities to the existing COL Well site to remove PFAS from the well’s groundwater supply.
- Construction would take place at Zone 7’s COL Well site, located at 2655 El Charro Road, Livermore.
project SCHEDULE & UPDATES
- Zone 7 completed the design of the project in December 2022.
- Bid process for construction of the facility took place in March 2023, with Board awarding the contract on April 19, 2023.
- Construction of the facility is underway and is expected to be completed in early 2025.
- In November 2024, Zone 7 successfully installed the new Ion Exchange PFAS Treatment vessels.
- The treatment facility went online in March of 2025 following the grand opening ribbon-cutting ceremony.
- Read the news release: Zone 7 Opens Chain of Lakes PFAS Treatment Facility
- See the new COL IX Treatment Facility featured on TV30’s Slice of Life.
CONTACT OUR PROJECT TEAM
Please contact Brandon Woods at (925) 454-5078 or bwoods@zone7water.com with any concerns. We appreciate your patience throughout the construction of this project as we make these important improvements to your water treatment system.
LEARN MORE ABOUT PFAS
- All water supplied to our customers meets the regulatory standards set by the state and federal governments.
- In almost all cases, the quality was significantly better than required.
- Zone 7 continues to deliver all water below the California Division of Drinking Water’s response levels for PFAS.
- For more information about how we keep your water safe from PFAS click here.
- To learn about new PFHxS advisory levels click here.