Wastewater collection services in the City of Clayton are performed by the City of Concord. Concord’s wastewater collection system conveys wastewater to Central Contra Costa Sanitation District’s wastewater treatment plant. For services issues, connections, or other questions regarding sanitary sewer service, please contact the City of Concord.
City of Clayton Wastewater maps
City of Concord Public Works
Address: 1950 Parkside Drive
Concord, CA 94519