Crystal Lake, IL Radon Mitigation and Testing
This northwest Chicago suburb in McHenry County shows an average radon level of 7.25 pCi/L, significantly exceeding the EPA action threshold of 4.0 pCi/L. Built primarily on glacial till deposits over limestone bedrock, the area's predominantly single-family homes with full basements create ideal conditions for radon accumulation. Testing data from zip codes 60012 and 60014 confirms that Crystal Lake homeowners should take immediate action to test and, if necessary, mitigate elevated radon levels in their properties.
Based on 8 user-submitted radon tests for homes in Crystal Lake, IL. The EPA recommends taking action at or above 4.0 pCi/L.
Crystal Lake, IL Radon Mitigation
Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.
Crystal Lake, IL Radon Testing
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Crystal Lake, Illinois Radon Levels
User-submitted radon test readings from homes in the Crystal Lake area.
| Radon Level | City | Home Age | Foundation | Submitted |
|---|---|---|---|---|
| 8 pCi/L | Crystal Lake, IL | 21-50 Years | Full Basement | Nov 2024 |
| 5 pCi/L | Crystal Lake, IL | 0-20 Years | Full Basement | Apr 2024 |
| 7 pCi/L | Crystal Lake, IL | 51-99 Years | Full Basement | Jul 2022 |
| 4 pCi/L | Crystal Lake, IL | 51-99 Years | Full Basement | Feb 2022 |
| 10 pCi/L | Crystal Lake, IL | 0-20 Years | Full Basement | Aug 2020 |
Have a radon test result for Crystal Lake? Submit your reading to help other homeowners.
Crystal Lake Radon Facts
Key details about the radon risk profile for Crystal Lake and the 60012 zip code area.
Crystal Lake and the 60012 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 Crystal Lake, 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 |