Saint John, ND Radon Mitigation and Testing

Q: What EPA Radon Zone is Saint John in?

Saint John is in Rolette County, EPA Zone 1.

Q: How much does radon mitigation cost in Saint John?

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

Rolette County

EPA Zone 1

Saint John, ND resides in Rolette 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. Testing is recommended for all homes in the 58369 zip code area.

Saint John, ND Radon Mitigation

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

Saint John, ND Radon Testing

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

Saint John Radon Facts

Key details about the radon risk profile for Saint John and the 58369 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Rolette County, ND

Zip Code

58369

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Saint John and the 58369 zip code are located in Rolette 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 Saint John, ND

What EPA Radon Zone is Saint John in?

Saint John and the 58369 zip code are in Rolette 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 Saint John?

Radon mitigation in Saint John 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 Saint John?

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