Charleston, IL Radon Mitigation and Testing
Home to Eastern Illinois University in Coles County, Charleston has recorded a notable radon reading of 8.0 pCi/L, doubling the EPA action level. The community sits atop central Illinois's characteristic glacial moraine deposits over limestone bedrock, geological conditions known for supporting radon gas production and migration. Given this documented elevated reading in zip code 61920, both university housing and private residences should prioritize radon testing and mitigation where necessary.
Based on 1 user-submitted radon test for homes in Charleston, IL. The EPA recommends taking action at or above 4.0 pCi/L.
Charleston, IL Radon Mitigation
Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.
Charleston, IL Radon Testing
Finding qualified radon testing professionals is the first step toward protecting your home.
Charleston, Illinois Radon Levels
User-submitted radon test readings from homes in the Charleston area.
| Radon Level | City | Home Age | Foundation | Submitted |
|---|---|---|---|---|
| 8 pCi/L | Charleston, IL | 21-50 Years | Full Basement | Jan 2024 |
Have a radon test result for Charleston? Submit your reading to help other homeowners.
Charleston Radon Facts
Key details about the radon risk profile for Charleston and the 61920 zip code area.
Charleston and the 61920 zip code are located in Coles County, which has an EPA assigned Radon Zone of 1. A radon zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L. The EPA recommends testing every home regardless of zone classification.
Radon FAQ for Charleston, 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 |