Deerfield, MI Radon Levels

Q: What EPA Radon Zone is Deerfield in?

Deerfield is in Lenawee County, EPA Zone 1.

Q: How much does radon mitigation cost in Deerfield?

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

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

Deerfield, MI Radon Facts

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

County Lenawee County, MI

Zip Code 49238

Located in Lenawee County within the Monroe Metro area, Deerfield's 49238 zip code sits on glacial till deposits characteristic of southeastern Michigan's agricultural region. Limited testing data makes individual home testing crucial for residents of this rural community. The area's clay-rich glacial soils over limestone bedrock create geological conditions that can facilitate radon gas movement, though levels typically vary considerably between individual properties.

7.57

pCi/L area average

Above EPA Action Level

Lenawee County average: 7.57 pCi/L, based on 7 user-submitted tests across 5 cities in the county. No homeowner readings have been submitted for Deerfield 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+

Deerfield, 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 Deerfield, MI

No homeowner tests have been submitted for Deerfield 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
Britton	7.3 mi	8.00 pCi/L	1
Tecumseh	11.4 mi	11.50 pCi/L	2
Clinton	14.5 mi	6.00 pCi/L	1
Tipton	18.1 mi	4.00 pCi/L	1
Saline	19.3 mi	1.00 pCi/L	1
Onsted	22.6 mi	6.00 pCi/L	2
Carleton	23.8 mi	4.00 pCi/L	1
Ypsilanti	25.6 mi	8.50 pCi/L	4

Lenawee County Radon Profile

The bedrock and soils beneath Lenawee County are classified by the EPA as Radon Zone 1, the highest-risk tier, with predicted average indoor screening levels above 4 pCi/L. Homeowner-submitted tests from 5 cities in Lenawee County average 7.57 pCi/L across 7 tests — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. Radon is the second leading cause of lung cancer in the United States, and a short-term test is the only way to confirm a specific home's level in Lenawee County.

Radon FAQ for Deerfield, MI

What EPA Radon Zone is Deerfield in?

Deerfield and the 49238 zip code are in Lenawee 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 Deerfield?

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

Radon mitigation in Deerfield 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 Deerfield?

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.