Langdon, ND Radon Mitigation and Testing

Q: What EPA Radon Zone is Langdon in?

Langdon is in Cavalier County, EPA Zone 1.

Q: How much does radon mitigation cost in Langdon?

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

Located in Cavalier County near the Canadian border, Langdon sits on glacial till deposits over shale bedrock that can contribute to significant radon potential across northern North Dakota. Testing data for zip code 58249 is currently limited, but the county's geology suggests homeowners should prioritize radon testing. The area's prairie conditions and basement-heavy housing stock make professional assessment particularly important.

Langdon, ND Radon Mitigation

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

Langdon, ND Radon Testing

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

Langdon Radon Facts

Key details about the radon risk profile for Langdon and the 58249 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Cavalier County, ND

Zip Code

58249

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Langdon and the 58249 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 Langdon, ND

What EPA Radon Zone is Langdon in?

Langdon and the 58249 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 Langdon?

Radon mitigation in Langdon 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 Langdon?

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