Wales, ND Radon Mitigation and Testing

Q: What EPA Radon Zone is Wales in?

Wales is in Cavalier County, EPA Zone 1.

Q: How much does radon mitigation cost in Wales?

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

Cavalier County

EPA Zone 1

Remote Cavalier County community Wales sits near the Canadian border where glacial lake deposits overlay sedimentary bedrock formations. The area's Zone 1 EPA designation reflects North Dakota's generally elevated radon potential across diverse geological conditions. Testing data remains limited for zip code 58281, making individual home testing essential for residents, particularly given the harsh winters that keep homes tightly sealed and can concentrate indoor radon levels.

Wales, ND Radon Mitigation

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

Wales, ND Radon Testing

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

Wales Radon Facts

Key details about the radon risk profile for Wales and the 58281 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Cavalier County, ND

Zip Code

58281

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Wales and the 58281 zip code are located in Cavalier 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 Wales, ND

What EPA Radon Zone is Wales in?

Wales and the 58281 zip code are in Cavalier 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 Wales?

Radon mitigation in Wales 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 Wales?

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