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Farmington, MI Radon Levels

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


Farmington, MI Radon Facts

EPA Radon Zone Zone 2 — Moderate Risk 2–4 pCi/L (Zone 2)
County Oakland County, MI
Zip Code 48331
Avg. User Level 2.00 pCi/L
User Tests 1

Located in southeastern Michigan's Oakland County within the Detroit metro area, Farmington shows an average radon level of 2.0 pCi/L based on available testing data. This reading falls well within the EPA's recommended range, though individual homes can still vary significantly from this average. The community's suburban housing development and regional glacial geology create conditions where continued monitoring remains beneficial for residents across zip codes 48331, 48334, and 48335.

2.00
pCi/L average
Below EPA Action Level

Based on 1 user-submitted radon test for homes in Farmington, MI. The EPA recommends taking action at or above 4.0 pCi/L.

0
4.0 EPA
10+

Farmington, MI Radon Mitigation

Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.

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Farmington, MI Radon Levels

User-submitted radon test readings from homes in the Farmington area.

Radon LevelCityHome AgeFoundation
2 pCi/L Farmington, MI No Basement/All Slab

Have a radon test result for Farmington? Submit your reading to help other homeowners.

Radon Readings Near Farmington, MI

Compare radon levels in Farmington with the closest nearby cities that have user-submitted test data.

CityDistanceAvg User LevelReadings
Novi 5.4 mi 5.00 pCi/L 7
West Bloomfield 5.8 mi 5.25 pCi/L 4
Walled Lake 7.1 mi 6.33 pCi/L 3
Franklin 7.1 mi 8.00 pCi/L 1
Northville 7.2 mi 5.33 pCi/L 3
Wixom 8.2 mi 13.00 pCi/L 2
Bloomfield Hills 8.4 mi 4.00 pCi/L 1
Commerce Township 9.1 mi 4.00 pCi/L 1

Oakland County Radon Profile

The soils and bedrock of Oakland County place it in EPA Radon Zone 2, a moderate-risk classification with predicted indoor averages of 2 to 4 pCi/L. Homeowner-submitted tests from 22 cities in Oakland County average 7.30 pCi/L across 50 tests — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. Since radon is the second leading cause of lung cancer nationally, the EPA urges every household in Oakland County to test, as levels can differ between neighboring homes.

Radon FAQ for Farmington, MI

What is the average radon level in Farmington, MI?
Based on 1 user-submitted test, the average radon level in Farmington is 2.00 pCi/L. This is below the EPA's recommended action level of 4.0 pCi/L. However, we recommend all homes be tested regardless of your neighbor's results.
What EPA Radon Zone is Farmington in?
Farmington and the 48331 zip code are in Oakland County, which has an EPA assigned Radon Zone of 2. A zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L.
How much does radon mitigation cost in Farmington?
Radon mitigation in Farmington 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 Farmington?
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.