Stillman Valley, IL Radon Mitigation and Testing
Positioned in Ogle County near the Rockford Metro area, Stillman Valley recorded an average radon level of 5.0 pCi/L, which exceeds the EPA action threshold of 4.0 pCi/L. The area's glacial till soils over limestone bedrock contribute to elevated radon potential throughout north-central Illinois. Homes in zip code 61084 should be tested regularly, particularly those with full basements common in this region.
Based on 1 user-submitted radon test for homes in Stillman Valley, IL. The EPA recommends taking action at or above 4.0 pCi/L.
Stillman Valley, IL Radon Mitigation
Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.
Stillman Valley, IL Radon Testing
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Stillman Valley, Illinois Radon Levels
User-submitted radon test readings from homes in the Stillman Valley area.
| Radon Level | City | Home Age | Foundation | Submitted |
|---|---|---|---|---|
| 5 pCi/L | Stillman Valley, IL | 0-20 Years | Full Basement | Nov 2018 |
Have a radon test result for Stillman Valley? Submit your reading to help other homeowners.
Stillman Valley Radon Facts
Key details about the radon risk profile for Stillman Valley and the 61084 zip code area.
Stillman Valley and the 61084 zip code are located in Ogle 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 Stillman Valley, 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 |