Ann Arbor, MI Radon Levels
Check local Ann Arbor radon levels and find certified testing and mitigation professionals to keep your home safe
Ann Arbor, MI Radon Facts
Home to the University of Michigan in Washtenaw County, Ann Arbor's diverse housing ranges from historic neighborhoods to modern developments, many built over Michigan's glacial till deposits. Current testing shows an average radon level of 5.0 pCi/L, which exceeds the EPA action level and indicates the need for mitigation in affected properties. The city's mix of older homes with stone foundations and newer construction across multiple zip codes creates varying radon entry pathways that warrant individual testing.
Based on 1 user-submitted radon test for homes in Ann Arbor, MI. The EPA recommends taking action at or above 4.0 pCi/L.
Ann Arbor, MI Radon Mitigation
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Ann Arbor, MI Radon Levels
User-submitted radon test readings from homes in the Ann Arbor area.
| Radon Level | City | Home Age | Foundation |
|---|---|---|---|
| 5 pCi/L | Ann Arbor, MI | 51-99 Years | Full Basement |
Have a radon test result for Ann Arbor? Submit your reading to help other homeowners.
Radon Readings Near Ann Arbor, MI
Compare radon levels in Ann Arbor with the closest nearby cities that have user-submitted test data.
| City | Distance | Avg User Level | Readings |
|---|---|---|---|
| Ypsilanti | 6.8 mi | 8.50 pCi/L | 4 |
| Saline | 7.6 mi | 1.00 pCi/L | 1 |
| Dexter | 10.4 mi | 4.00 pCi/L | 1 |
| South Lyon | 13.3 mi | 15.00 pCi/L | 2 |
| Canton | 13.8 mi | 3.00 pCi/L | 2 |
| Plymouth | 14.5 mi | 4.33 pCi/L | 3 |
| Pinckney | 15.8 mi | 7.33 pCi/L | 3 |
| Northville | 16.0 mi | 5.33 pCi/L | 3 |
Washtenaw County Radon Profile
Because of its underlying geology, Washtenaw 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 4 cities in Washtenaw County average 6.29 pCi/L across 7 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 Washtenaw County home regardless of zone or a neighbor's results.