Grayslake, IL Radon Levels
Check local Grayslake radon levels and find certified testing and mitigation professionals to keep your home safe
Grayslake, IL Radon Facts
Suburban Lake County's Grayslake, located along the northern Chicago metro corridor, shows an average radon level of 5.0 pCi/L from seven property tests. This reading exceeds the EPA action level, reflecting the area's glacial till deposits over limestone bedrock that characterize much of northern Illinois. Residents of zip code 60030 should test their properties, as the community's predominantly single-family homes with full basements provide ideal conditions for radon accumulation.
Based on 7 user-submitted radon tests for homes in Grayslake, IL. The EPA recommends taking action at or above 4.0 pCi/L.
Grayslake, IL Radon Mitigation
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Grayslake, IL Radon Levels
User-submitted radon test readings from homes in the Grayslake area.
| Radon Level | City | Home Age | Foundation |
|---|---|---|---|
| 4 pCi/L | Grayslake, IL | 21-50 Years | Full Basement |
| 6 pCi/L | Grayslake, IL | 21-50 Years | Partial Basement |
| 10 pCi/L | Grayslake, IL | 21-50 Years | No Basement/All Crawl Space |
| 3 pCi/L | Grayslake, IL | 21-50 Years | Full Basement |
Have a radon test result for Grayslake? Submit your reading to help other homeowners.
Radon Readings Near Grayslake, IL
Compare radon levels in Grayslake with the closest nearby cities that have user-submitted test data.
| City | Distance | Avg User Level | Readings |
|---|---|---|---|
| Round Lake | 2.0 mi | 7.80 pCi/L | 5 |
| Gurnee | 5.7 mi | 5.00 pCi/L | 2 |
| Fox Lake | 6.3 mi | 5.00 pCi/L | 1 |
| Mundelein | 6.6 mi | 8.00 pCi/L | 3 |
| Libertyville | 7.3 mi | 9.33 pCi/L | 3 |
| Wauconda | 7.3 mi | 6.67 pCi/L | 3 |
| Antioch | 8.4 mi | 7.00 pCi/L | 4 |
| Lake Zurich | 9.5 mi | 6.00 pCi/L | 7 |
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.