Monticello, IL Radon Mitigation and Testing
Situated in Piatt County within central Illinois prairie, Monticello shows an average radon level of 4.5 pCi/L that modestly exceeds EPA action guidelines. The area's deep glacial moraine deposits over limestone bedrock contribute to moderate-to-high radon potential across the region. Local homes, predominantly single-family construction with full basements, provide typical pathways for radon entry and accumulation in this agricultural community.
Based on 2 user-submitted radon tests for homes in Monticello, IL. The EPA recommends taking action at or above 4.0 pCi/L.
Monticello, IL Radon Mitigation
Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.
Monticello, IL Radon Testing
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Monticello, Illinois Radon Levels
User-submitted radon test readings from homes in the Monticello area.
| Radon Level | City | Home Age | Foundation | Submitted |
|---|---|---|---|---|
| 5 pCi/L | Monticello, IL | 21-50 Years | No Basement/All Slab | Jul 2021 |
| 4 pCi/L | Monticello, IL | 21-50 Years | Full Basement | Feb 2016 |
Have a radon test result for Monticello? Submit your reading to help other homeowners.
Monticello Radon Facts
Key details about the radon risk profile for Monticello and the 61856 zip code area.
Monticello and the 61856 zip code are located in Piatt 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 Monticello, 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 |