Chain-of-Lakes (COL) PFAS Treatment Facility

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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 award of the contract on April 19, 2023.
  • Construction of the facility is underway and is expected to be completed in early 2025.
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.