Croswell, MI Radon Levels

Q: What EPA Radon Zone is Croswell in?

Croswell is in Sanilac County, EPA Zone 2.

Q: How much does radon mitigation cost in Croswell?

Radon mitigation typically costs between $800 and $2,000. Most standard systems fall in the $1,000-$1,500 range.

Check local Croswell radon levels and find certified testing and mitigation professionals to keep your home safe

Croswell, MI Radon Facts

EPA Radon Zone Zone 2 — Moderate Risk 2–4 pCi/L (Zone 2)

County Sanilac County, MI

Zip Code 48422

Croswell, nestled in Sanilac County along Michigan's eastern thumb region, sits atop glacial till deposits that can create conditions favorable for radon gas accumulation. Testing data for this zip code 48422 community remains limited, making professional radon testing essential for homeowners. Given the geological characteristics of the region, residents should prioritize baseline testing regardless of home age or foundation type.

2.00

pCi/L area average

Below EPA Action Level

Sanilac County average: 2.00 pCi/L, based on 1 user-submitted test across 1 city in the county. No homeowner readings have been submitted for Croswell itself yet, so this county figure is the closest available benchmark. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Croswell, MI Radon Mitigation

Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.

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Radon Readings Near Croswell, MI

No homeowner tests have been submitted for Croswell yet. The closest cities with user-submitted radon data are shown below — explore them to gauge local conditions. Radon varies by home, so testing is the only way to know your level.

City	Distance	Avg User Level	Readings
Port Sanilac	12.6 mi	2.00 pCi/L	1
Goodells	22.2 mi	4.00 pCi/L	1
Imlay City	26.8 mi	4.00 pCi/L	1
Richmond	30.4 mi	2.00 pCi/L	1
East China	33.8 mi	10.50 pCi/L	2
Lapeer	38.0 mi	4.00 pCi/L	1
Washington	40.9 mi	5.00 pCi/L	2
Oxford	43.1 mi	11.00 pCi/L	2

Sanilac County Radon Profile

The soils and bedrock of Sanilac County place it in EPA Radon Zone 2, a moderate-risk classification with predicted indoor averages of 2 to 4 pCi/L. Homeowner-submitted tests from 1 city in Sanilac County average 2.00 pCi/L across 1 test — below the EPA's 4 pCi/L action level, though radon varies sharply from home to home. Since radon is the second leading cause of lung cancer nationally, the EPA urges every household in Sanilac County to test, as levels can differ between neighboring homes.

Radon FAQ for Croswell, MI

What EPA Radon Zone is Croswell in?

Croswell and the 48422 zip code are in Sanilac County, which has an EPA assigned Radon Zone of 2. A zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L.

Why are radon readings shown from areas near Croswell?

No homeowner radon tests have been submitted for Croswell yet. Because radon is driven by regional soil and bedrock geology, readings from the closest cities—and the Sanilac County average—are the best available indicator of local conditions until Croswell homeowners submit their own results. The EPA still recommends testing every individual home, since levels can vary significantly from house to house.

How much does radon mitigation cost in Croswell?

Radon mitigation in Croswell typically costs between $800 and $2,000. Most homes with standard basements can be mitigated with a sub-slab depressurization system in the $1,000–$1,500 range. Factors that can increase cost include complex foundations, crawl spaces, or very high radon levels.

Should I test for radon if I'm buying a home in Croswell?

Yes. Radon testing should be part of every home purchase. A short-term radon test is typically included as part of the home inspection process and costs $150–$250. If elevated levels are found, you can negotiate mitigation as part of the sale.