Sacramento, CA Radon Mitigation and Testing
California's capital city in Sacramento County shows an average radon level of 4.33 pCi/L, just above the EPA's 4.0 pCi/L action threshold across recent testing. The Sacramento Metro area's Central Valley geology and diverse housing stock, from historic homes to modern developments, create varying radon conditions throughout the region. Homeowners across all zip codes should consider professional radon testing, particularly given the documented readings that exceed recommended levels.
Based on 3 user-submitted radon tests for homes in Sacramento, CA. The EPA recommends taking action at or above 4.0 pCi/L.
Sacramento, CA Radon Mitigation
Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.
Sacramento, CA Radon Testing
Finding qualified radon testing professionals is the first step toward protecting your home.
Sacramento, California Radon Levels
User-submitted radon test readings from homes in the Sacramento area.
| Radon Level | City | Home Age | Foundation | Submitted |
|---|---|---|---|---|
| 5 pCi/L | Sacramento, CA | — | No Basement/All Slab | Sep 2025 |
| 3 pCi/L | Sacramento, CA | 21-50 Years | No Basement/All Slab | Dec 2019 |
| 5 pCi/L | Sacramento, CA | 21-50 Years | No Basement/All Slab | May 2016 |
Have a radon test result for Sacramento? Submit your reading to help other homeowners.
Sacramento Radon Facts
Key details about the radon risk profile for Sacramento and the 95811 zip code area.
Sacramento and the 95811 zip code are located in Sacramento County, which has an EPA assigned Radon Zone of 3. A radon zone of 3 predicts an average indoor radon screening level less than 2 pCi/L. The EPA recommends testing every home regardless of zone classification.
Radon FAQ for Sacramento, CA
What is the average radon level in Sacramento, CA?
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Most Active Radon Markets in California
Cities with the most user-submitted radon test data in the state.
| City | Avg User Radon Level | Submissions |
|---|---|---|
| Los Angeles | 7.83 pCi/L | 6 |
| Mammoth Lakes | 10.80 pCi/L | 5 |
| San Jose | 4.20 pCi/L | 5 |
| Rancho Palos Verdes | 8.00 pCi/L | 4 |
| Woodland Hills | 7.67 pCi/L | 3 |
| South Lake Tahoe | 6.33 pCi/L | 3 |
| Palos Verdes Peninsula | 6.00 pCi/L | 3 |
| Bishop | 5.67 pCi/L | 3 |
| Sacramento | 4.33 pCi/L | 3 |
| Oakland | 3.33 pCi/L | 3 |
| Fresno | 10.00 pCi/L | 2 |
| Davis | 8.00 pCi/L | 2 |
| Palo Alto | 6.50 pCi/L | 2 |
| Studio City | 6.50 pCi/L | 2 |
| Menlo Park | 5.00 pCi/L | 2 |
| Truckee | 5.00 pCi/L | 2 |
| Walnut Creek | 4.00 pCi/L | 2 |
| San Diego | 3.50 pCi/L | 2 |
| San Francisco | 3.50 pCi/L | 2 |
| Belmont | 20.00 pCi/L | 1 |