Woodstock, IL Radon Levels
Check local Woodstock radon levels and find certified testing and mitigation professionals to keep your home safe
Woodstock, IL Radon Facts
Situated in McHenry County along the northern suburban corridor of the Chicago metro, Woodstock demonstrates significant radon concerns with an average level of 12.5 pCi/L, well above the EPA action level. The area's glacial till deposits from the Wisconsin glaciation create highly favorable conditions for radon gas production and migration. Most homes in zip code 60098 feature full basements where radon readily accumulates, making professional mitigation often necessary.
Based on 2 user-submitted radon tests for homes in Woodstock, IL. The EPA recommends taking action at or above 4.0 pCi/L.
Woodstock, IL Radon Mitigation
Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.
Need Radon Mitigation or Testing in Woodstock?
- 100% Free, No-Obligation Quotes
- Matches You with State-Licensed McHenry County Pros
Woodstock, IL Radon Levels
User-submitted radon test readings from homes in the Woodstock area.
| Radon Level | City | Home Age | Foundation |
|---|---|---|---|
| 5 pCi/L | Woodstock, IL | 51-99 Years | Full Basement |
| 20 pCi/L | Woodstock, IL | 0-20 Years | Full Basement |
Have a radon test result for Woodstock? Submit your reading to help other homeowners.
Radon Readings Near Woodstock, IL
Compare radon levels in Woodstock with the closest nearby cities that have user-submitted test data.
| City | Distance | Avg User Level | Readings |
|---|---|---|---|
| Crystal Lake | 7.9 mi | 7.25 pCi/L | 8 |
| Mchenry | 9.6 mi | 11.00 pCi/L | 4 |
| Marengo | 9.7 mi | 5.50 pCi/L | 2 |
| Huntley | 10.0 mi | 5.75 pCi/L | 4 |
| Harvard | 10.7 mi | 8.00 pCi/L | 2 |
| Lake In The Hills | 11.3 mi | 6.50 pCi/L | 4 |
| Cary | 12.6 mi | 6.00 pCi/L | 3 |
| Algonquin | 13.0 mi | 5.00 pCi/L | 2 |
McHenry County Radon Profile
EPA mapping assigns McHenry County to Radon Zone 2, indicating moderate predicted indoor screening levels in the 2 to 4 pCi/L range based on regional geology. Homeowner-submitted tests from 11 cities in McHenry County average 7.73 pCi/L across 33 tests — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. As the second leading cause of lung cancer in the U.S., radon warrants testing in every McHenry County home regardless of zone or a neighbor's results.