Hazelwood, MO Radon Levels
Check local Hazelwood radon levels and find certified testing and mitigation professionals to keep your home safe
Hazelwood, MO Radon Facts
Part of St. Louis County in the St. Louis Metro area, Hazelwood recorded a notably high average radon level of 20.0 pCi/L based on testing from zip code 63042. This reading significantly exceeds the EPA's 4.0 pCi/L action threshold, reflecting the area's limestone bedrock and loess deposits that create favorable conditions for radon accumulation. Immediate professional radon mitigation is strongly recommended for all homes in this community.
Based on 1 user-submitted radon test for homes in Hazelwood, MO. The EPA recommends taking action at or above 4.0 pCi/L.
Hazelwood, MO Radon Mitigation
Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.
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Hazelwood, MO Radon Levels
User-submitted radon test readings from homes in the Hazelwood area.
| Radon Level | City | Home Age | Foundation |
|---|---|---|---|
| 20 pCi/L | Hazelwood, MO | 0-20 Years | Full Basement |
Have a radon test result for Hazelwood? Submit your reading to help other homeowners.
Radon Readings Near Hazelwood, MO
Compare radon levels in Hazelwood with the closest nearby cities that have user-submitted test data.
| City | Distance | Avg User Level | Readings |
|---|---|---|---|
| Saint Charles | 10.4 mi | 5.00 pCi/L | 1 |
| Saint Peters | 13.8 mi | 7.00 pCi/L | 1 |
| Chesterfield | 14.8 mi | 5.00 pCi/L | 1 |
| Ballwin | 16.1 mi | 4.00 pCi/L | 1 |
| O Fallon | 19.9 mi | 7.75 pCi/L | 4 |
| Fenton | 20.1 mi | 16.00 pCi/L | 2 |
| Lake Saint Louis | 22.6 mi | 5.00 pCi/L | 2 |
| Arnold | 24.2 mi | 10.50 pCi/L | 2 |
St Louis County Radon Profile
St Louis County has not been assigned a definitive EPA radon zone, so the agency recommends that every home be tested regardless of predicted risk. Homeowner-submitted tests from 4 cities in St Louis County average 12.20 pCi/L across 5 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 St Louis County.