Zion, IL Radon Levels
Check local Zion radon levels and find certified testing and mitigation professionals to keep your home safe
Zion, IL Radon Facts
Situated in Lake County along Illinois' northern suburban corridor, Zion has recorded an average radon level of 4.0 pCi/L, right at the EPA's action threshold. The community's location near Lake Michigan, with glacial till deposits over limestone bedrock, creates conditions that can produce elevated radon levels. Homeowners in zip code 60099 should consider testing and potential mitigation given these borderline readings.
Based on 1 user-submitted radon test for homes in Zion, IL. The EPA recommends taking action at or above 4.0 pCi/L.
Zion, IL Radon Mitigation
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Zion, IL Radon Levels
User-submitted radon test readings from homes in the Zion area.
| Radon Level | City | Home Age | Foundation |
|---|---|---|---|
| 4 pCi/L | Zion, IL | — | Full Basement |
Have a radon test result for Zion? Submit your reading to help other homeowners.
Radon Readings Near Zion, IL
Compare radon levels in Zion with the closest nearby cities that have user-submitted test data.
| City | Distance | Avg User Level | Readings |
|---|---|---|---|
| Wadsworth | 3.3 mi | 9.50 pCi/L | 2 |
| Waukegan | 4.8 mi | 4.00 pCi/L | 1 |
| Gurnee | 7.6 mi | 5.00 pCi/L | 2 |
| Lake Bluff | 11.2 mi | 4.00 pCi/L | 1 |
| Libertyville | 12.6 mi | 9.33 pCi/L | 3 |
| Grayslake | 12.7 mi | 5.00 pCi/L | 7 |
| Round Lake | 13.8 mi | 7.80 pCi/L | 5 |
| Antioch | 14.3 mi | 7.00 pCi/L | 4 |
Lake County Radon Profile
The soils and bedrock of Lake County place it in EPA Radon Zone 2, a moderate-risk classification with predicted indoor averages of 2 to 4 pCi/L. Homeowner-submitted tests from 19 cities in Lake County average 6.68 pCi/L across 59 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 Lake County to test, as levels can differ between neighboring homes.