Find your septic tank and septic records by address in California. Current California coverage is focused on Sonoma County, with detailed onsite wastewater (OWTS) location records.
$29 per report • Instant access • No account required
14,000+
mapped septic locations in California
Coverage includes:
Who regulates & keeps records
California sets statewide OWTS policy through the State Water Board and delegates permitting to local agencies. In Sonoma County, Permit Sonoma’s Well & Septic Division holds permit files — request records via their Well & Septic service form or (707) 565-2849.
Inspection at sale
No single statewide mandate. Sonoma County uses a "Findings Report" for real-estate transactions, and properties within 600 ft of the Russian River (or many tributaries) must have an OWTS inspection every 5 years. Confirm exact requirements with Permit Sonoma before relying on this.
Key requirements
Pumping
$340-$400
CA market estimate
Inspection
$400-$800
CA estimate; real-estate inspections higher
New/replacement
$9,000-$10,900
CA conventional est.; advanced $10k-20k+
Ranges are typical estimates and vary by property, system, and contractor.
How do I find my septic tank in California?
Enter your California property address into TankFindr. We search 14,000+ mapped septic locations from government records and return the GPS location, septic-vs-sewer status, and any permit details on file for the property.
Does TankFindr cover my county in California?
Current California coverage is focused on Sonoma County, with detailed onsite wastewater (OWTS) location records. You can run a free address check to see exactly what we have for a specific property before purchasing a report.
Who keeps septic records in California?
California sets statewide OWTS policy through the State Water Board and delegates permitting to local agencies. In Sonoma County, Permit Sonoma’s Well & Septic Division holds permit files — request records via their Well & Septic service form or (707) 565-2849.