Cary, NC Radon Levels
Check local Cary radon levels and find certified testing and mitigation professionals to keep your home safe
Cary, NC Radon Facts
Major Wake County suburb in the Raleigh Metro area showing an average radon level of 5.0 pCi/L, which exceeds the EPA action threshold of 4.0 pCi/L. The community's location on Piedmont geology with granite and metamorphic bedrock contributes to elevated radon potential throughout zip codes 27511, 27513, 27518, and 27519. Cary's extensive suburban development with predominantly crawl space and basement foundations requires ongoing radon testing and potential mitigation.
Based on 4 user-submitted radon tests for homes in Cary, NC. The EPA recommends taking action at or above 4.0 pCi/L.
Cary, NC Radon Mitigation
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Cary, NC Radon Levels
User-submitted radon test readings from homes in the Cary area.
| Radon Level | City | Home Age | Foundation |
|---|---|---|---|
| 2 pCi/L | Cary, NC | 21-50 Years | No Basement/All Crawl Space |
| 5 pCi/L | Cary, NC | 0-20 Years | Full Basement |
| 8 pCi/L | Cary, NC | 21-50 Years | Partial Basement |
Have a radon test result for Cary? Submit your reading to help other homeowners.
Radon Readings Near Cary, NC
Compare radon levels in Cary with the closest nearby cities that have user-submitted test data.
| City | Distance | Avg User Level | Readings |
|---|---|---|---|
| Apex | 4.0 mi | 3.50 pCi/L | 2 |
| Raleigh | 9.6 mi | 9.00 pCi/L | 1 |
| Chapel Hill | 16.7 mi | 3.00 pCi/L | 1 |
| Wake Forest | 20.8 mi | 4.50 pCi/L | 2 |
| Wendell | 23.4 mi | 20.00 pCi/L | 1 |
| Hillsborough | 26.2 mi | 3.00 pCi/L | 1 |
| Zebulon | 27.8 mi | 9.00 pCi/L | 1 |
| Benson | 29.6 mi | 5.00 pCi/L | 1 |
Wake County Radon Profile
Wake County is mapped as EPA Radon Zone 2, where the local geology is predicted to produce moderate indoor screening levels between 2 and 4 pCi/L. Homeowner-submitted tests from 6 cities in Wake County average 6.73 pCi/L across 11 tests — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. Radon is the second leading cause of lung cancer in the United States, and a short-term test is the only way to confirm a specific home's level in Wake County.