Lewiston, MN Radon Mitigation and Testing

Q: What EPA Radon Zone is Lewiston in?

Lewiston is in Winona County, EPA Zone 1.

Q: How much does radon mitigation cost in Lewiston?

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

Winona County

EPA Zone 1

Positioned along the Mississippi River in Winona County, Lewiston sits in southeastern Minnesota where limestone bluffs and river valley geology can influence radon levels. Testing data for zip code 55952 remains limited, emphasizing the importance of individual home radon testing in this scenic river community. Minnesota's karst limestone formations and the area's mix of foundation types create conditions where radon monitoring is particularly important for homeowner safety.

Lewiston, MN Radon Mitigation

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

Lewiston, MN Radon Testing

Finding qualified radon testing professionals is the first step toward protecting your home.

Lewiston Radon Facts

Key details about the radon risk profile for Lewiston and the 55952 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Winona County, MN

Zip Code

55952

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Lewiston and the 55952 zip code are located in Winona County, which has an EPA assigned Radon Zone of 1. A radon zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Lewiston, MN

What EPA Radon Zone is Lewiston in?

Lewiston and the 55952 zip code are in Winona 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.

How much does radon mitigation cost in Lewiston?

Radon mitigation in Lewiston 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 Lewiston?

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.

Most Active Radon Markets in Minnesota

Cities with the most user-submitted radon test data in the state.

City	Avg User Radon Level	Submissions
Savage	5.00 pCi/L	3
Faribault	10.00 pCi/L	2
Shakopee	6.50 pCi/L	2
Minneapolis	5.00 pCi/L	2
Lakeville	6.00 pCi/L	1
Delano	5.00 pCi/L	1
Montgomery	5.00 pCi/L	1
Rosemount	No submissions	0