Princeton, IL Radon Levels
Check local Princeton radon levels and find certified testing and mitigation professionals to keep your home safe
Princeton, IL Radon Facts
Princeton sits in Bureau County where recent testing reveals an average radon level of 11.5 pCi/L, significantly exceeding the EPA action level of 4.0 pCi/L. Located in ZIP code 61356, the community lies within Illinois River valley geology where glacial deposits over limestone bedrock create ideal conditions for radon accumulation. With readings ranging from 8.0 to 15.0 pCi/L and the area's EPA Zone 1 classification, Princeton residents should prioritize immediate radon mitigation.
Based on 2 user-submitted radon tests for homes in Princeton, IL. The EPA recommends taking action at or above 4.0 pCi/L.
Princeton, IL Radon Mitigation
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Princeton, IL Radon Levels
User-submitted radon test readings from homes in the Princeton area.
| Radon Level | City | Home Age | Foundation |
|---|---|---|---|
| 8 pCi/L | Princeton, IL | 100+ Years | — |
| 15 pCi/L | Princeton, IL | 51-99 Years | Partial Basement |
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Radon Readings Near Princeton, IL
Compare radon levels in Princeton with the closest nearby cities that have user-submitted test data.
Bureau County Radon Profile
Because of its underlying geology, Bureau County is mapped as EPA Radon Zone 1 — the most elevated classification — where predicted indoor screening averages exceed 4 pCi/L. Homeowner-submitted tests from 3 cities in Bureau County average 7.50 pCi/L across 4 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 Bureau County home regardless of zone or a neighbor's results.