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Sacramento, CA Radon Levels

Check local Sacramento radon levels and find certified testing and mitigation professionals to keep your home safe


Sacramento, CA Radon Facts

EPA Radon Zone Zone 3 — Low Risk < 2.0 pCi/L (Zone 3)
County Sacramento County, CA
Zip Code 95811
Avg. User Level 4.30 pCi/L
User Tests 3

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.

4.30
pCi/L average
Above EPA Action Level

Based on 3 user-submitted radon tests for homes in Sacramento, CA. The EPA recommends taking action at or above 4.0 pCi/L.

0
4.0 EPA
10+

Sacramento, CA Radon Mitigation

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Sacramento, CA Radon Levels

User-submitted radon test readings from homes in the Sacramento area.

Radon LevelCityHome AgeFoundation
5 pCi/L Sacramento, CA No Basement/All Slab
3 pCi/L Sacramento, CA 21-50 Years No Basement/All Slab
5 pCi/L Sacramento, CA 21-50 Years No Basement/All Slab

Have a radon test result for Sacramento? Submit your reading to help other homeowners.

Radon FAQ for Sacramento, CA

What is the average radon level in Sacramento, CA?
Based on 3 user-submitted tests, the average radon level in Sacramento is 4.30 pCi/L. This exceeds the EPA's recommended action level of 4.0 pCi/L, and radon testing is recommended for all homes in the area.
What EPA Radon Zone is Sacramento in?
Sacramento and the 95811 zip code are in Sacramento County, which has an EPA assigned Radon Zone of 3. A zone of 3 predicts an average indoor radon screening level less than 2 pCi/L.
How much does radon mitigation cost in Sacramento?
Radon mitigation in Sacramento typically costs between $800 and $2,000. Most homes with standard basements can be mitigated with a sub-slab depressurization system in the $1,000–$1,500 range. Factors that can increase cost include complex foundations, crawl spaces, or very high radon levels.
Should I test for radon if I'm buying a home in Sacramento?
Yes. Radon testing should be part of every home purchase. A short-term radon test is typically included as part of the home inspection process and costs $150–$250. If elevated levels are found, you can negotiate mitigation as part of the sale.

Most Active Radon Markets in California

Cities in California with the most user-submitted radon test data, ranked by number of submissions.

CityAvg User Radon LevelSubmissions
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
Bishop 6.25 pCi/L 4
Oakland 5.00 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
Sacramento 4.33 pCi/L 3