Grand Forks, ND Radon Mitigation and Testing

Q: What is the average radon level in Grand Forks, ND?

Based on 8 user-submitted tests, the average radon level is 13.50 pCi/L.

Q: What EPA Radon Zone is Grand Forks in?

Grand Forks is in Grand Forks County, EPA Zone 1.

Q: How much does radon mitigation cost in Grand Forks?

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

Avg: 13.50 pCi/L

Grand Forks County

EPA Zone 1

8 user tests

Situated in Grand Forks County along the Red River valley, Grand Forks shows an average radon level of 13.5 pCi/L across multiple zip codes, significantly exceeding the EPA action threshold of 4.0 pCi/L. The region's glacial lake deposits and clay-rich soils over limestone bedrock create conditions highly favorable for radon accumulation in homes with basements and crawl spaces.

13.50

pCi/L average

Above EPA Action Level

Based on 8 user-submitted radon tests for homes in Grand Forks, ND. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Grand Forks, ND Radon Mitigation

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

Grand Forks, ND Radon Testing

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

Grand Forks, North Dakota Radon Levels

User-submitted radon test readings from homes in the Grand Forks area.

Radon Level	City	Home Age	Foundation	Submitted
20 pCi/L	Grand Forks, ND	0-20 Years	Full Basement	Nov 2022
11 pCi/L	Grand Forks, ND	21-50 Years	Full Basement	Mar 2021
12 pCi/L	Grand Forks, ND	—	—	Sep 2020
8 pCi/L	Grand Forks, ND	51-99 Years	Full Basement	Jan 2020
16 pCi/L	Grand Forks, ND	0-20 Years	Full Basement	Mar 2019

Have a radon test result for Grand Forks? Submit your reading to help other homeowners.

Grand Forks Radon Facts

Key details about the radon risk profile for Grand Forks and the 58201 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Grand Forks County, ND

Zip Code

58201

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Avg. User Submitted Level

13.50 pCi/L

User Tests Submitted

Grand Forks and the 58201 zip code are located in Grand Forks 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 Grand Forks, ND

What is the average radon level in Grand Forks, ND?

Based on 8 user-submitted tests, the average radon level in Grand Forks is 13.50 pCi/L. This exceeds the EPA's recommended action level of 4.0 pCi/L, and radon testing is recommended for all homes in the area.

What EPA Radon Zone is Grand Forks in?

Grand Forks and the 58201 zip code are in Grand Forks 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 Grand Forks?

Radon mitigation in Grand Forks 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 Grand Forks?

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