Rochester, MN Radon Levels

Q: What EPA Radon Zone is Rochester in?

Rochester is in Olmsted County, EPA Zone 1.

Q: How much does radon mitigation cost in Rochester?

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

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

Rochester, MN Radon Facts

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

County Olmsted County, MN

Zip Code 55901

Home to the renowned Mayo Clinic, Rochester in Olmsted County sits within Minnesota's high-radon Zone 1 designation, indicating significant radon potential from the underlying Paleozoic limestone and sandstone bedrock. Testing data across zip codes 55901, 55902, 55904, and 55906 remains limited, making professional radon testing crucial for all homeowners in this metro area. The region's mix of older homes and modern construction both require radon assessment due to the favorable geological conditions for radon gas migration.

6.78

pCi/L area average

Above EPA Action Level

Nearby homeowner readings average 6.78 pCi/L, based on 9 tests from 7 nearby cities. No readings have been submitted for Rochester yet, so the closest recorded data is shown as a benchmark. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Rochester, MN 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 Rochester, MN

No homeowner tests have been submitted for Rochester 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
Blooming Prairie	32.3 mi	4.00 pCi/L	1
Minnesota City	35.0 mi	7.00 pCi/L	1
Le Roy	35.5 mi	8.00 pCi/L	1
Winona	36.9 mi	10.00 pCi/L	1
Lyle	43.0 mi	3.00 pCi/L	1
Faribault	45.0 mi	10.00 pCi/L	2
Northfield	45.9 mi	4.50 pCi/L	2

Olmsted County Radon Profile

Olmsted County falls in EPA Radon Zone 1, meaning the local uranium-bearing geology is predicted to drive average indoor radon screening levels above the EPA's 4 pCi/L action threshold. Few homeowner tests have been logged inside Olmsted County so far, which is why this page draws on the nearest recorded readings to illustrate regional radon levels. Since radon is the second leading cause of lung cancer nationally, the EPA urges every household in Olmsted County to test, as levels can differ between neighboring homes.

Radon FAQ for Rochester, MN

What EPA Radon Zone is Rochester in?

Rochester and the 55901 zip code are in Olmsted 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 Rochester?

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

Radon mitigation in Rochester 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 Rochester?

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.