Athens, MI Radon Levels

Q: What EPA Radon Zone is Athens in?

Athens is in Calhoun County, EPA Zone 1.

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

No homeowner radon tests have been submitted for Athens yet, so readings from the closest cities and the Calhoun 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 Athens?

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

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

Athens, MI Radon Facts

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

County Calhoun County, MI

Zip Code 49011

Positioned in south-central Michigan's Calhoun County, Athens sits on glacial deposits over sedimentary bedrock that create variable radon conditions across the region. Although comprehensive radon testing data is not yet available for this rural community, the area's geological characteristics warrant professional testing by homeowners. Local housing includes both historic farmhouses with stone foundations and newer construction, creating diverse basement conditions that can influence radon accumulation.

6.63

pCi/L area average

Above EPA Action Level

Calhoun County average: 6.63 pCi/L, based on 8 user-submitted tests across 3 cities in the county. No homeowner readings have been submitted for Athens 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+

Athens, 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 Athens, MI

No homeowner tests have been submitted for Athens 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
Ceresco	9.7 mi	3.00 pCi/L	1
Battle Creek	15.0 mi	6.60 pCi/L	5
Coldwater	16.9 mi	9.00 pCi/L	1
Marshall	18.2 mi	8.50 pCi/L	2
Portage	19.5 mi	3.33 pCi/L	3
Three Rivers	23.0 mi	6.00 pCi/L	2
Concord	30.2 mi	5.00 pCi/L	1
Mattawan	30.4 mi	4.00 pCi/L	1

Calhoun County Radon Profile

Because of its underlying geology, Calhoun 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 Calhoun County average 6.63 pCi/L across 8 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 Calhoun County home regardless of zone or a neighbor's results.

Radon FAQ for Athens, MI

What EPA Radon Zone is Athens in?

Athens and the 49011 zip code are in Calhoun 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 Athens?

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

Radon mitigation in Athens 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 Athens?

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.