East Grand Forks, MN Radon Levels

Q: What EPA Radon Zone is East Grand Forks in?

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

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

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

Check local East Grand Forks radon levels and find certified testing and mitigation professionals to keep your home safe

East Grand Forks, MN Radon Facts

EPA Radon Zone Zone 1 — High Risk > 4.0 pCi/L (Zone 1)

County Polk County, MN

Zip Code 56721

Border community East Grand Forks sits in Polk County along the Red River, where zip code 56721 encompasses flat prairie terrain with clay-rich soils that can contribute to radon accumulation. While local testing data is currently limited, Minnesota's EPA Zone 1 classification in this region indicates elevated radon potential for many homes. The community's housing stock, including both historic structures and newer construction with various basement configurations, makes individual radon testing particularly important.

7.00

pCi/L area average

Above EPA Action Level

Polk County average: 7.00 pCi/L, based on 1 user-submitted test across 1 city in the county. No homeowner readings have been submitted for East Grand Forks itself yet, so this county figure is the closest available benchmark. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

East Grand Forks, MN Radon Mitigation

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

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Radon Readings Near East Grand Forks, MN

No homeowner tests have been submitted for East Grand Forks yet. The closest cities with user-submitted radon data are shown below — explore them to gauge local conditions. Radon varies by home, so testing is the only way to know your level.

City	Distance	Avg User Level	Readings
Crookston	22.5 mi	7.00 pCi/L	1
Thief River Falls	40.9 mi	9.00 pCi/L	1

Polk County Radon Profile

The bedrock and soils beneath Polk County are classified by the EPA as Radon Zone 1, the highest-risk tier, with predicted average indoor screening levels above 4 pCi/L. Homeowner-submitted tests from 1 city in Polk County average 7.00 pCi/L across 1 test — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. Radon is the second leading cause of lung cancer in the United States, and a short-term test is the only way to confirm a specific home's level in Polk County.

Radon FAQ for East Grand Forks, MN

What EPA Radon Zone is East Grand Forks in?

East Grand Forks and the 56721 zip code are in Polk 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.

Why are radon readings shown from areas near East Grand Forks?

No homeowner radon tests have been submitted for East Grand Forks yet. Because radon is driven by regional soil and bedrock geology, readings from the closest cities—and the Polk County average—are the best available indicator of local conditions until East Grand Forks homeowners submit their own results. The EPA still recommends testing every individual home, since levels can vary significantly from house to house.

How much does radon mitigation cost in East Grand Forks?

Radon mitigation in East 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 East 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.