Contra Costa County, CA septic permits and regulations
Septic systems in Contra Costa County, California are permitted by Contra Costa County Environmental Health Division under California Water Quality Control Policy for OWTS (Resolution No. 2012-0032).
Septic permit program
- Program type: County Health Department
- Authorized agent: Contra Costa County Health Department
- Own septic program: No, uses California state rules
- Local rules beyond the state: No
- Population: 1,165,927
Permit fee comparison
Average septic permit fee in Contra Costa County: $1,095. California average: $808.
Local rules
County operates under state-level California OWTS Policy (Water Code §13290-13291.7). Contact local health department for any additional county-specific requirements.
What SepticPro has on file for Contra Costa County
- 35 permit fees with sources
- The agency phone, email and office address
- Setback distances
- Soil and perc test requirements
- Allowed system types
- System design rules
- Inspection requirements
- Maintenance and pumping rules
- Point-of-sale rules
- Installer, designer and pumper licensing
Create a free account to see the full details.
Draw a permit-ready site plan for Contra Costa County
Enter the address, draw the system on the aerial with the parcel lines and topo, and print it to scale for Contra Costa County Environmental Health Division. See how SepticPro site plans work.
Other California counties
- Alameda County
- Alpine County
- Amador County
- Butte County
- Calaveras County
- Colusa County
- Del Norte County
- El Dorado County
- Fresno County
- Glenn County
- Humboldt County
- Imperial County
- Inyo County
- Kern County
- Kings County
- Lake County
- Lassen County
- Los Angeles County
- Madera County
- Marin County
- Mariposa County
- Mendocino County
- Merced County
- Modoc County
Data checked 2026-03-16. Always confirm requirements with Contra Costa County Environmental Health Division before applying.