Afton, MN Radon Levels

Q: What EPA Radon Zone is Afton in?

Afton is in Washington County, EPA Zone 1.

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

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

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

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

Afton, MN Radon Facts

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

County Washington County, MN

Zip Code 55001

This Washington County community in the Minneapolis-St. Paul Metro area benefits from extensive suburban development but has limited local radon testing data. Minnesota's glacial geology and limestone bedrock create conditions where radon levels can vary significantly between neighboring properties. Residents in zip code 55001 should test their homes independently, especially given the area's typical basement construction that can trap radon gas.

5.33

pCi/L area average

Above EPA Action Level

Washington County average: 5.33 pCi/L, based on 6 user-submitted tests across 6 cities in the county. No homeowner readings have been submitted for Afton 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+

Afton, 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 Afton, MN

No homeowner tests have been submitted for Afton 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
Cottage Grove	6.3 mi	7.00 pCi/L	2
Lake Elmo	9.5 mi	4.00 pCi/L	1
Hastings	11.0 mi	8.50 pCi/L	2
Saint Paul	14.7 mi	8.40 pCi/L	5
Farmington	21.6 mi	7.50 pCi/L	2
Minneapolis	24.9 mi	5.00 pCi/L	2
Lakeville	25.2 mi	6.00 pCi/L	1
Savage	26.6 mi	5.00 pCi/L	3

Washington County Radon Profile

Washington 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. Homeowner-submitted tests from 6 cities in Washington County average 5.33 pCi/L across 6 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 Washington County to test, as levels can differ between neighboring homes.

Radon FAQ for Afton, MN

What EPA Radon Zone is Afton in?

Afton and the 55001 zip code are in Washington 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 Afton?

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

Radon mitigation in Afton 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 Afton?

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.