Cass Lake, MN Radon Levels

Q: What EPA Radon Zone is Cass Lake in?

Cass Lake is in Cass County, EPA Zone 2.

Q: How much does radon mitigation cost in Cass Lake?

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

Check local Cass Lake radon levels and find certified testing and mitigation professionals to keep your home safe

Cass Lake, MN Radon Facts

EPA Radon Zone Zone 2 — Moderate Risk 2–4 pCi/L (Zone 2)

County Cass County, MN

Zip Code 56633

Surrounded by pristine northwoods lakes in Cass County, Cass Lake sits within Minnesota's glacial lake region where sandy soils and granite bedrock create moderate radon potential. With testing data currently unavailable for zip code 56633, residents should prioritize professional radon testing given the regional geological conditions.

5.67

pCi/L area average

Above EPA Action Level

Cass County average: 5.67 pCi/L, based on 6 user-submitted tests across 4 cities in the county. No homeowner readings have been submitted for Cass Lake 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+

Cass Lake, 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 Cass Lake, MN

No homeowner tests have been submitted for Cass Lake 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
Laporte	11.1 mi	4.00 pCi/L	1
Walker	18.3 mi	4.00 pCi/L	1
Hackensack	25.6 mi	4.00 pCi/L	2
Longville	29.8 mi	7.50 pCi/L	2
Nevis	31.0 mi	4.00 pCi/L	1
Deer River	35.7 mi	10.00 pCi/L	1

Cass County Radon Profile

EPA mapping assigns Cass County to Radon Zone 2, indicating moderate predicted indoor screening levels in the 2 to 4 pCi/L range based on regional geology. Homeowner-submitted tests from 4 cities in Cass County average 5.67 pCi/L across 6 tests — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. As the second leading cause of lung cancer in the U.S., radon warrants testing in every Cass County home regardless of zone or a neighbor's results.

Radon FAQ for Cass Lake, MN

What EPA Radon Zone is Cass Lake in?

Cass Lake and the 56633 zip code are in Cass County, which has an EPA assigned Radon Zone of 2. A zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L.

Why are radon readings shown from areas near Cass Lake?

No homeowner radon tests have been submitted for Cass Lake yet. Because radon is driven by regional soil and bedrock geology, readings from the closest cities—and the Cass County average—are the best available indicator of local conditions until Cass Lake 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 Cass Lake?

Radon mitigation in Cass Lake 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 Cass Lake?

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.