Highland Park, MI Radon Levels

Q: What EPA Radon Zone is Highland Park in?

Highland Park is in Wayne County, EPA Zone 3.

Q: Why are radon readings shown from areas near Highland Park?

No homeowner radon tests have been submitted for Highland Park 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 Highland Park?

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

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

Highland Park, MI Radon Facts

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

County Wayne County, MI

Zip Code 48203

Within Detroit Metro's Wayne County (zip code 48203), Highland Park sits in an area where glacial lake deposits and underlying sedimentary bedrock contribute to variable radon conditions. Currently, testing data for this community is limited, making it challenging to determine local radon patterns. Given Michigan's overall moderate radon potential and the mix of housing foundations in this urban area, homeowners should consider professional radon testing.

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 Highland Park 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+

Highland Park, 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 Highland Park, MI

No homeowner tests have been submitted for Highland Park 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
Warren	6.6 mi	5.67 pCi/L	3
Harper Woods	8.8 mi	5.00 pCi/L	1
Birmingham	10.3 mi	6.00 pCi/L	1
Franklin	10.4 mi	8.00 pCi/L	1
Troy	11.3 mi	3.00 pCi/L	1
Sterling Heights	11.9 mi	7.00 pCi/L	1
Allen Park	13.0 mi	7.00 pCi/L	1
Bloomfield Hills	13.4 mi	4.00 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 Highland Park, MI

What EPA Radon Zone is Highland Park in?

Highland Park and the 48203 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 Highland Park?

No homeowner radon tests have been submitted for Highland Park 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 Highland Park 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 Highland Park?

Radon mitigation in Highland Park 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 Highland Park?

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.