Dennison, MN Radon Levels

Q: What EPA Radon Zone is Dennison in?

Dennison is in Goodhue County, EPA Zone 1.

Q: How much does radon mitigation cost in Dennison?

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

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

Dennison, MN Radon Facts

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

County Goodhue County, MN

Zip Code 55018

Situated in Goodhue County in southeastern Minnesota, Dennison lies within the karst limestone region that contributes to the state's elevated radon potential. With limited testing data available for the 55018 area, homeowners should prioritize radon testing, especially in homes with basements where radon can accumulate in this high-risk geological zone.

6.41

pCi/L area average

Above EPA Action Level

Nearby homeowner readings average 6.41 pCi/L, based on 17 tests from 10 nearby cities. No readings have been submitted for Dennison 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+

Dennison, 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 Dennison, MN

No homeowner tests have been submitted for Dennison 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
Northfield	10.7 mi	4.50 pCi/L	2
Faribault	18.5 mi	10.00 pCi/L	2
Farmington	19.0 mi	7.50 pCi/L	2
Hastings	20.3 mi	8.50 pCi/L	2
Elko New Market	20.6 mi	3.00 pCi/L	1
Lakeville	22.7 mi	6.00 pCi/L	1
Cottage Grove	27.9 mi	7.00 pCi/L	2
Prior Lake	29.8 mi	5.00 pCi/L	1

Goodhue County Radon Profile

Because of its underlying geology, Goodhue County is mapped as EPA Radon Zone 1 — the most elevated classification — where predicted indoor screening averages exceed 4 pCi/L. Direct test data for Goodhue County remains limited, so the closest neighboring readings are used here to represent the radon conditions homeowners are likely to encounter. As the second leading cause of lung cancer in the U.S., radon warrants testing in every Goodhue County home regardless of zone or a neighbor's results.

Radon FAQ for Dennison, MN

What EPA Radon Zone is Dennison in?

Dennison and the 55018 zip code are in Goodhue 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 Dennison?

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

Radon mitigation in Dennison 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 Dennison?

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.