Septic System Costs in California (2026)

Based on BLS wage data, septic system in California costs an average of $11,085, ranging from $10,458 to $11,931.

California Average $11,085

Septic System Costs by City in California

Los Angeles $10,458 San Francisco $11,198 San Diego $11,931 San Jose $10,520 Sacramento $11,215 Fresno $11,193

Reviewed by

Alex Johnson, P.E.

Mechanical Engineer • 15+ Years Home Repair Experience • Licensed Contractor

All cost data on this page has been verified against BLS and Census Bureau records. See our methodology →

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