Cogswell, ND Radon Mitigation and Testing

Q: What EPA Radon Zone is Cogswell in?

Cogswell is in Sargent County, EPA Zone 1.

Q: How much does radon mitigation cost in Cogswell?

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

Sargent County

EPA Zone 1

Located in the Red River Valley region of Sargent County, Cogswell (58017) sits within southeastern North Dakota where glacial lake deposits and underlying shale formations create elevated radon potential. Current testing data is unavailable for this rural agricultural community, though North Dakota's high radon designation makes professional testing essential for homeowners. The area's prairie setting includes farmstead properties and small-town homes with varying foundation types, from full basements to crawl spaces, requiring individual assessment for radon risk.

Cogswell, ND Radon Mitigation

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

Cogswell, ND Radon Testing

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

Cogswell Radon Facts

Key details about the radon risk profile for Cogswell and the 58017 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Sargent County, ND

Zip Code

58017

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Cogswell and the 58017 zip code are located in Sargent 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 Cogswell, ND

What EPA Radon Zone is Cogswell in?

Cogswell and the 58017 zip code are in Sargent 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 Cogswell?

Radon mitigation in Cogswell 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 Cogswell?

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 North Dakota

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

City	Avg User Radon Level	Submissions
Grand Forks	13.50 pCi/L	8
Grafton	7.67 pCi/L	3
Dickinson	6.00 pCi/L	3
Watford City	5.50 pCi/L	2
Bismarck	No submissions	0