Lake Saint Louis, MO Radon Levels
Check local Lake Saint Louis radon levels and find certified testing and mitigation professionals to keep your home safe
Lake Saint Louis, MO Radon Facts
This St. Louis metro community in St Charles County shows an average radon level of 5.0 pCi/L based on 2 local tests, which exceeds the EPA's 4.0 action threshold. Built on Missouri's karst limestone terrain, the 63367 area's geology contributes to elevated radon potential in many homes. Residents should prioritize testing, especially in the community's predominant basement-equipped suburban housing.
Based on 2 user-submitted radon tests for homes in Lake Saint Louis, MO. The EPA recommends taking action at or above 4.0 pCi/L.
Lake Saint Louis, MO Radon Mitigation
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Lake Saint Louis, MO Radon Levels
User-submitted radon test readings from homes in the Lake Saint Louis area.
| Radon Level | City | Home Age | Foundation |
|---|---|---|---|
| 4 pCi/L | Lake Saint Louis, MO | 21-50 Years | Full Basement |
| 6 pCi/L | Lake Saint Louis, MO | 0-20 Years | Full Basement |
Have a radon test result for Lake Saint Louis? Submit your reading to help other homeowners.
Radon Readings Near Lake Saint Louis, MO
Compare radon levels in Lake Saint Louis with the closest nearby cities that have user-submitted test data.
| City | Distance | Avg User Level | Readings |
|---|---|---|---|
| O Fallon | 2.7 mi | 7.75 pCi/L | 4 |
| Saint Peters | 8.8 mi | 7.00 pCi/L | 1 |
| Saint Charles | 12.3 mi | 5.00 pCi/L | 1 |
| Chesterfield | 15.5 mi | 5.00 pCi/L | 1 |
| Troy | 17.2 mi | 8.50 pCi/L | 4 |
| Ballwin | 19.1 mi | 4.00 pCi/L | 1 |
| Labadie | 19.5 mi | 4.00 pCi/L | 1 |
| Hazelwood | 22.6 mi | 20.00 pCi/L | 1 |
St Charles County Radon Profile
A specific EPA radon zone has not been established for St Charles County, which is why testing is advised for all homes here irrespective of geology. Homeowner-submitted tests from 5 cities in St Charles County average 6.63 pCi/L across 8 tests — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. Since radon is the second leading cause of lung cancer nationally, the EPA urges every household in St Charles County to test, as levels can differ between neighboring homes.