Allen, MI Radon Levels

Q: What EPA Radon Zone is Allen in?

Allen is in Hillsdale County, EPA Zone 1.

Q: Why are radon readings shown from areas near Allen?

No homeowner radon tests have been submitted for Allen yet, so readings from the closest cities and the Hillsdale County average are used as the best available indicator of local conditions. The EPA recommends testing every individual home.

Q: How much does radon mitigation cost in Allen?

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

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

Allen, MI Radon Facts

EPA Radon Zone Zone 1 — High Risk > 4.0 pCi/L (Zone 1)

County Hillsdale County, MI

Zip Code 49227

Located in Hillsdale County in southern Michigan's rural landscape, Allen sits within glacial till deposits over limestone bedrock that contribute to elevated radon potential across the region. This small agricultural community in zip code 49227 features predominantly older farmhouses and rural homes, many with full or partial basements typical of Michigan construction. With Michigan's Zone 1 radon designation and limited local testing data, homeowners should prioritize radon testing to ensure safe indoor air quality.

7.19

pCi/L area average

Above EPA Action Level

Nearby homeowner readings average 7.19 pCi/L, based on 16 tests from 10 nearby cities. No readings have been submitted for Allen yet, so the closest recorded data is shown as a benchmark. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Allen, 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 Allen, MI

No homeowner tests have been submitted for Allen 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
Coldwater	12.4 mi	9.00 pCi/L	1
Concord	17.0 mi	5.00 pCi/L	1
Spring Arbor	20.6 mi	20.00 pCi/L	1
Marshall	23.9 mi	8.50 pCi/L	2
Ceresco	25.0 mi	3.00 pCi/L	1
Jackson	27.5 mi	7.00 pCi/L	1
Onsted	30.4 mi	6.00 pCi/L	2
Battle Creek	32.8 mi	6.60 pCi/L	5

Hillsdale County Radon Profile

Hillsdale County falls in EPA Radon Zone 1, meaning the local uranium-bearing geology is predicted to drive average indoor radon screening levels above the EPA's 4 pCi/L action threshold. Few homeowner tests have been logged inside Hillsdale County so far, which is why this page draws on the nearest recorded readings to illustrate regional radon levels. Since radon is the second leading cause of lung cancer nationally, the EPA urges every household in Hillsdale County to test, as levels can differ between neighboring homes.

Radon FAQ for Allen, MI

What EPA Radon Zone is Allen in?

Allen and the 49227 zip code are in Hillsdale County, which has an EPA assigned Radon Zone of 1. A zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L.

Why are radon readings shown from areas near Allen?

No homeowner radon tests have been submitted for Allen yet. Because radon is driven by regional soil and bedrock geology, readings from the closest cities—and the Hillsdale County average—are the best available indicator of local conditions until Allen 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 Allen?

Radon mitigation in Allen 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 Allen?

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.