Mchenry, IL Radon Mitigation and Testing
Positioned in McHenry County in the northwest suburban Chicago Metro, McHenry shows a concerning average radon level of 11.0 pCi/L, nearly three times the EPA action level. The area's glacial till deposits over limestone bedrock create ideal conditions for radon production and accumulation in homes with full basements. Residents in zip code 60050 should take immediate action, as this significantly elevated reading demands professional radon mitigation.
Based on 4 user-submitted radon tests for homes in Mchenry, IL. The EPA recommends taking action at or above 4.0 pCi/L.
Mchenry, IL Radon Mitigation
Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.
Mchenry, IL Radon Testing
Finding qualified radon testing professionals is the first step toward protecting your home.
Mchenry, Illinois Radon Levels
User-submitted radon test readings from homes in the Mchenry area.
| Radon Level | City | Home Age | Foundation | Submitted |
|---|---|---|---|---|
| 14 pCi/L | Mchenry, IL | 21-50 Years | Full Basement | Jan 2026 |
| 6 pCi/L | Mchenry, IL | 51-99 Years | Full Basement | Nov 2020 |
| 12 pCi/L | Mchenry, IL | 21-50 Years | Partial Basement | Oct 2020 |
| 12 pCi/L | Mchenry, IL | 0-20 Years | Full Basement | Mar 2019 |
Have a radon test result for Mchenry? Submit your reading to help other homeowners.
Mchenry Radon Facts
Key details about the radon risk profile for Mchenry and the 60050 zip code area.
Mchenry and the 60050 zip code are located in McHenry 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 Mchenry, 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 |