Construction Zones
Construction Zones
Central San strives to ensure that our collection and treatment systems operate in the most efficient manner possible. Through an aggressive capital improvement plan, we initiate projects to upgrade our infrastructure and utilize the most advanced, cost-effective equipment and processes available. As these projects develop, we’ll keep you informed about them through this section of our site.
Collection System Renovation Projects
Project-specific information such as descriptions, maps, and contacts can be found here.
LAFAYETTE SEWER RENOVATION PROJECT, PHASE 15
Project Description The Lafayette Sewer Renovation Project will replace approximately 1.8 miles of sewers at various locations around Lafayette.
Project Status Bidding
Construction Schedule January 2025 – October 2025
Public Workshop/General Project Information
This Central San Sewer Renovations video provides project details presented during project-specific public workshops, including anticipated impacts and descriptions of construction methods. Additional project-specific information can be found on the Collection System Renovations Projects page.
Service Area & Statistics
Service Area Map
Central San collects and cleans more than 13 billion gallons of wastewater per year for nearly 500,000 residents and more than 15,000 businesses on over 3,000 parcels in central Contra Costa County.
