Troy, MO Radon Levels
Check local Troy radon levels and find certified testing and mitigation professionals to keep your home safe
Troy, MO Radon Facts
Positioned in east-central Missouri's Lincoln County within the St. Louis metro area, Troy shows concerning radon levels averaging 8.5 pCi/L, more than double the EPA action threshold. The area's karst limestone geology and glacial deposits create highly favorable conditions for radon accumulation, making professional testing and mitigation essential for all homeowners.
Based on 4 user-submitted radon tests for homes in Troy, MO. The EPA recommends taking action at or above 4.0 pCi/L.
Troy, MO Radon Mitigation
Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.
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Troy, MO Radon Levels
User-submitted radon test readings from homes in the Troy area.
| Radon Level | City | Home Age | Foundation |
|---|---|---|---|
| 15 pCi/L | Troy, MO | 0-20 Years | Full Basement |
| 4 pCi/L | Troy, MO | 0-20 Years | Full Basement |
| 11 pCi/L | Troy, MO | 0-20 Years | Full Basement |
Have a radon test result for Troy? Submit your reading to help other homeowners.
Radon Readings Near Troy, MO
Compare radon levels in Troy with the closest nearby cities that have user-submitted test data.
| City | Distance | Avg User Level | Readings |
|---|---|---|---|
| Lake Saint Louis | 17.2 mi | 5.00 pCi/L | 2 |
| O Fallon | 19.1 mi | 7.75 pCi/L | 4 |
| Saint Peters | 23.8 mi | 7.00 pCi/L | 1 |
| Saint Charles | 27.1 mi | 5.00 pCi/L | 1 |
| Chesterfield | 32.5 mi | 5.00 pCi/L | 1 |
| New Haven | 32.8 mi | 5.00 pCi/L | 1 |
| Labadie | 33.6 mi | 4.00 pCi/L | 1 |
| Hazelwood | 35.5 mi | 20.00 pCi/L | 1 |
Lincoln County Radon Profile
EPA mapping assigns Lincoln County to Radon Zone 2, indicating moderate predicted indoor screening levels in the 2 to 4 pCi/L range based on regional geology. Homeowner-submitted tests from 1 city in Lincoln County average 8.50 pCi/L across 4 tests — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. As the second leading cause of lung cancer in the U.S., radon warrants testing in every Lincoln County home regardless of zone or a neighbor's results.