Radon Mitigation
in Ann Arbor, Michigan
Find certified radon contractors in Washtenaw County — serving Ann Arbor and surrounding areas
Radon Risk in Ann Arbor
Ann Arbor and Washtenaw County sit in EPA Zone 1, an area with elevated radon risk. The EPA estimates that approximately 35% of Ann Arbor-area homes test above the 4 pCi/L action level, driven by glacial deposits and underlying uranium-bearing bedrock that concentrate radon gas. Testing and mitigation are strongly recommended for all homes with basements or ground-floor living spaces.
Why Radon Testing & Mitigation Matter in Ann Arbor
Glacial Geology
Washtenaw County's geology stems from glacial activity that deposited thick layers of soil over uranium-bearing bedrock. These formations naturally emit radon, which seeps through soil and accumulates in homes—especially basements built directly in contact with the ground.
Cold Winter Sealed Homes
Michigan winters are long and cold, meaning homes are sealed tight for months. This maximizes radon accumulation indoors, as natural air exchange is minimized. Energy efficiency in modern homes can inadvertently trap radon.
Health Risk
Radon is the second leading cause of lung cancer after smoking. The EPA action level of 4 pCi/L is a safety threshold — any level above it warrants testing and potential mitigation.
Affordable Mitigation
Most Ann Arbor-area homes can be mitigated in a single day with sub-slab depressurization or crawl space sealing. Costs are typically $800–$2,500 for a standard system.
Michigan requires certification for radon mitigation contractors. All contractors shown are NRPP or NRSB certified. To verify certifications, visit the NRPP Certified Professional Directory or NRSB website.
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View all Michigan contractors →Radon Mitigation in Washtenaw County Neighborhoods
Radon risk varies slightly across Washtenaw County neighborhoods, but testing is recommended everywhere. Areas with historically higher readings include:
- Downtown Ann Arbor
- Ypsilanti
- Saline
- Pittsfield Township
- Canton Township
- Scio Township
- Salem Township
- Superior Township
Next Steps for Ann Arbor Homeowners
- 1. Test your home: Have a certified radon contractor test your home for 48–90 hours to establish a baseline level.
- 2. Review results: If levels are above 4 pCi/L, mitigation is recommended by the EPA.
- 3. Get quotes: Contact certified mitigators in Ann Arbor for installation quotes and timelines.
- 4. Mitigate: Most systems are installed in a single day and reduce radon levels by 50–99%.
- 5. Verify: After installation, retest to confirm the system is working effectively.