Los Angeles, CA Radon Levels
Check local Los Angeles radon levels and find certified testing and mitigation professionals to keep your home safe
Los Angeles, CA Radon Facts
Home testing across Los Angeles County reveals an average radon level of 7.83 pCi/L, which significantly exceeds the EPA action threshold of 4.0 pCi/L. This sprawling metropolis sits atop complex geological formations including marine sediments and fault zones that can contribute to elevated radon concentrations. Given the diverse housing stock ranging from historic bungalows to modern high-rises, residents across all zip codes should prioritize radon testing and mitigation when necessary.
Based on 6 user-submitted radon tests for homes in Los Angeles, CA. The EPA recommends taking action at or above 4.0 pCi/L.
Los Angeles, CA Radon Mitigation
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Los Angeles, CA Radon Levels
User-submitted radon test readings from homes in the Los Angeles area.
| Radon Level | City | Home Age | Foundation |
|---|---|---|---|
| 13 pCi/L | Los Angeles, CA | 51-99 Years | Partial Basement |
| 12 pCi/L | Los Angeles, CA | 21-50 Years | — |
| 9 pCi/L | Los Angeles, CA | 51-99 Years | No Basement/All Crawl Space |
| 3 pCi/L | Los Angeles, CA | 21-50 Years | No Basement/All Crawl Space |
| 4 pCi/L | Los Angeles, CA | 51-99 Years | Full Basement |
Have a radon test result for Los Angeles? Submit your reading to help other homeowners.
Radon FAQ for Los Angeles, CA
What is the average radon level in Los Angeles, CA?
What EPA Radon Zone is Los Angeles in?
How much does radon mitigation cost in Los Angeles?
Should I test for radon if I'm buying a home in Los Angeles?
Most Active Radon Markets in California
Cities in California with the most user-submitted radon test data, ranked by number of submissions.
| 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 |
| 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 |