Marietta, MN Radon Mitigation and Testing

Q: What EPA Radon Zone is Marietta in?

Marietta is in Lac Qui Parle County, EPA Zone 1.

Q: How much does radon mitigation cost in Marietta?

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

Lac Qui Parle County

EPA Zone 1

Positioned in Lac Qui Parle County in southwestern Minnesota, Marietta occupies prairie land characterized by deep glacial till deposits over sedimentary bedrock. The community's housing stock reflects its agricultural heritage, with scattered farmsteads and residential properties often featuring basement foundations in older homes. Given the limited radon testing data available for this EPA Zone 1 area, local homeowners should prioritize testing to establish baseline readings.

Marietta, MN Radon Mitigation

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

Marietta, MN Radon Testing

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

Marietta Radon Facts

Key details about the radon risk profile for Marietta and the 56257 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Lac Qui Parle County, MN

Zip Code

56257

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Marietta and the 56257 zip code are located in Lac Qui Parle 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 Marietta, MN

What EPA Radon Zone is Marietta in?

Marietta and the 56257 zip code are in Lac Qui Parle 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 Marietta?

Radon mitigation in Marietta 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 Marietta?

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