Berwyn, IL Radon Levels
Check local Berwyn radon levels and find certified testing and mitigation professionals to keep your home safe
Berwyn, IL Radon Facts
This western Chicago suburb in Cook County sits atop glacial till deposits that create favorable conditions for radon production and migration. With an average radon level of 5.0 pCi/L, readings in ZIP 60402 exceed the EPA action level, reflecting the area's geology and predominantly basement-equipped housing stock. Berwyn's dense urban development of early-to-mid 20th century homes provides numerous pathways for radon entry through aging foundation systems.
Based on 1 user-submitted radon test for homes in Berwyn, IL. The EPA recommends taking action at or above 4.0 pCi/L.
Berwyn, IL Radon Mitigation
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Berwyn, IL Radon Levels
User-submitted radon test readings from homes in the Berwyn area.
| Radon Level | City | Home Age | Foundation |
|---|---|---|---|
| 5 pCi/L | Berwyn, IL | 100+ Years | Full Basement |
Have a radon test result for Berwyn? Submit your reading to help other homeowners.
Radon Readings Near Berwyn, IL
Compare radon levels in Berwyn with the closest nearby cities that have user-submitted test data.
| City | Distance | Avg User Level | Readings |
|---|---|---|---|
| Riverside | 1.6 mi | 8.00 pCi/L | 1 |
| Forest Park | 2.9 mi | 7.00 pCi/L | 2 |
| Oak Park | 3.4 mi | 5.33 pCi/L | 3 |
| River Forest | 4.4 mi | 4.00 pCi/L | 1 |
| Westchester | 4.9 mi | 4.00 pCi/L | 1 |
| Western Springs | 5.9 mi | 7.00 pCi/L | 1 |
| Burbank | 6.3 mi | 2.00 pCi/L | 1 |
| Chicago | 6.3 mi | 11.00 pCi/L | 3 |
Cook County Radon Profile
Cook County is mapped as EPA Radon Zone 2, where the local geology is predicted to produce moderate indoor screening levels between 2 and 4 pCi/L. Homeowner-submitted tests from 40 cities in Cook County average 6.44 pCi/L across 82 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 Cook County.