Detroit, MI Radon Levels

Q: What EPA Radon Zone is Detroit in?

Detroit is in Wayne County, EPA Zone 3.

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

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

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

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

Detroit, MI Radon Facts

EPA Radon Zone Zone 3 — Low Risk < 2.0 pCi/L (Zone 3)

County Wayne County, MI

Zip Code 48201

Michigan's largest city in Wayne County sits on glacial lake deposits over sedimentary bedrock in the heart of the Detroit Metro region. While comprehensive radon data for the 48201 zip code is currently limited, testing is recommended given the area's geological conditions and diverse housing stock. The neighborhood features historic urban homes with varying foundation types from different construction eras.

5.33

pCi/L area average

Above EPA Action Level

Wayne County average: 5.33 pCi/L, based on 15 user-submitted tests across 9 cities in the county. No homeowner readings have been submitted for Detroit 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+

Detroit, 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 Detroit, MI

No homeowner tests have been submitted for Detroit 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
Allen Park	9.4 mi	7.00 pCi/L	1
Warren	10.2 mi	5.67 pCi/L	3
Harper Woods	10.4 mi	5.00 pCi/L	1
Taylor	12.3 mi	6.00 pCi/L	2
Franklin	13.3 mi	8.00 pCi/L	1
Birmingham	13.7 mi	6.00 pCi/L	1
Riverview	14.6 mi	2.00 pCi/L	1
Troy	15.2 mi	3.00 pCi/L	1

Wayne County Radon Profile

The EPA maps Wayne County as Radon Zone 3, the lowest predicted classification, with modeled indoor screening levels under 2 pCi/L. Homeowner-submitted tests from 9 cities in Wayne County average 5.33 pCi/L across 15 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 Wayne County home regardless of zone or a neighbor's results.

Radon FAQ for Detroit, MI

What EPA Radon Zone is Detroit in?

Detroit and the 48201 zip code are in Wayne County, which has an EPA assigned Radon Zone of 3. A zone of 3 predicts an average indoor radon screening level less than 2 pCi/L.

Why are radon readings shown from areas near Detroit?

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

Radon mitigation in Detroit 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 Detroit?

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.