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.


Project Description The Danville Sewer Renovation Project, Phase 4 will replace approximately 1.75 miles of sewers primarily in the Greenbrook, Del Amigo, Creeks of Alamo, and Camille neighborhoods of Danville and Alamo.


Public Workshop/General Project Information

Keeping in line with public safety precautions related to COVID-19, Central San has canceled all public workshops for upcoming projects.

Please take a look at this Central San Sewer Renovations video that will provide project details 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 3,000 businesses in central Contra Costa County.