Septic Tank Inspectors in California
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Cities in California
California Septic Regulations
California septic systems are regulated by the State Water Resources Control Board (SWRCB) through Regional Water Quality Control Boards and local environmental health departments. Permits are required for all new installations, repairs, and modifications. Time-of-transfer inspections are not mandated statewide but may be required by local jurisdictions and lenders.
- Septic permits are issued by the local Regional Water Quality Control Board or county environmental health department, depending on the jurisdiction.
- California's OWTS Policy (Onsite Wastewater Treatment Systems) sets statewide standards for siting, design, and operation of septic systems.
- A site evaluation including soil analysis and percolation test is required before permit approval.
- Some coastal communities (e.g., Malibu Civic Center) prohibit new septic installations and require connection to centralized wastewater treatment.
- Minimum setback distances vary by region: typically 100 feet from a water well, 200 feet from a stream or lake.
- Local environmental health departments maintain records of permitted systems — request records before purchasing property.