Willowbrook, IL Radon Mitigation and Testing
Positioned in DuPage County in Chicago's western suburbs, Willowbrook shows elevated radon with an average level of 6.0 pCi/L - exceeding the EPA action threshold. The community sits on glacial till deposits over dolomite bedrock that creates favorable conditions for radon gas migration throughout the Chicago metro region. With Willowbrook's predominantly single-family homes featuring full basements built between the 1950s and 1990s, residents should prioritize radon mitigation systems and ongoing testing.
Based on 1 user-submitted radon test for homes in Willowbrook, IL. The EPA recommends taking action at or above 4.0 pCi/L.
Willowbrook, IL Radon Mitigation
Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.
Willowbrook, IL Radon Testing
Finding qualified radon testing professionals is the first step toward protecting your home.
Willowbrook, Illinois Radon Levels
User-submitted radon test readings from homes in the Willowbrook area.
| Radon Level | City | Home Age | Foundation | Submitted |
|---|---|---|---|---|
| 6 pCi/L | Willowbrook, IL | 21-50 Years | Partial Basement | Aug 2020 |
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Willowbrook Radon Facts
Key details about the radon risk profile for Willowbrook and the 60527 zip code area.
Willowbrook and the 60527 zip code are located in Dupage County, which has an EPA assigned Radon Zone of 2. A radon zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L. The EPA recommends testing every home regardless of zone classification.
Radon FAQ for Willowbrook, IL
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Most Active Radon Markets in Illinois
Cities with the most user-submitted radon test data in the state.
| City | Avg User Radon Level | Submissions |
|---|---|---|
| Buffalo Grove | 6.10 pCi/L | 10 |
| Crystal Lake | 7.25 pCi/L | 8 |
| Lake Zurich | 6.00 pCi/L | 7 |
| Grayslake | 5.00 pCi/L | 7 |
| New Lenox | 10.17 pCi/L | 6 |
| Park Ridge | 7.00 pCi/L | 6 |
| Arlington Heights | 6.17 pCi/L | 6 |
| Waterloo | 9.20 pCi/L | 5 |
| Palatine | 7.80 pCi/L | 5 |
| Round Lake | 7.80 pCi/L | 5 |
| Northbrook | 6.20 pCi/L | 5 |
| Mchenry | 11.00 pCi/L | 4 |
| Dekalb | 8.75 pCi/L | 4 |
| Columbia | 8.00 pCi/L | 4 |
| Lisle | 7.25 pCi/L | 4 |
| Normal | 7.25 pCi/L | 4 |
| Antioch | 7.00 pCi/L | 4 |
| Elk Grove Village | 7.00 pCi/L | 4 |
| Aurora | 6.75 pCi/L | 4 |
| Hoffman Estates | 6.75 pCi/L | 4 |