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Long Lake, MN Radon Levels

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


Long Lake, MN Radon Facts

EPA Radon Zone Zone 1 — High Risk > 4.0 pCi/L (Zone 1)
County Hennepin County, MN
Zip Code 55356

Established in Hennepin County within the Minneapolis-St. Paul metropolitan area, Long Lake occupies glacial lake deposits where comprehensive radon testing data isn't yet collected for this 55356 community. The city features upscale suburban homes built from the 1970s onward, predominantly with full basements characteristic of Minnesota construction standards. While specific local readings aren't available, the EPA Zone 1 classification and prevalence of basement foundations make radon testing a wise precaution for all residents.

6.30
pCi/L area average
Above EPA Action Level

Hennepin County average: 6.30 pCi/L, based on 10 user-submitted tests across 8 cities in the county. No homeowner readings have been submitted for Long Lake itself yet, so this county figure is the closest available benchmark. The EPA recommends taking action at or above 4.0 pCi/L.

0
4.0 EPA
10+

Long 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 Long Lake, MN

No homeowner tests have been submitted for Long 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.

CityDistanceAvg User LevelReadings
Mound 5.2 mi 6.00 pCi/L 1
Excelsior 6.3 mi 13.00 pCi/L 1
Minnetonka 7.1 mi 5.00 pCi/L 1
Hopkins 7.9 mi 7.00 pCi/L 1
Loretto 9.0 mi 6.00 pCi/L 1
Victoria 9.9 mi 4.00 pCi/L 1
Delano 11.1 mi 5.00 pCi/L 1
Eden Prairie 11.2 mi 6.00 pCi/L 1

Hennepin County Radon Profile

Because of its underlying geology, Hennepin County is mapped as EPA Radon Zone 1 — the most elevated classification — where predicted indoor screening averages exceed 4 pCi/L. Homeowner-submitted tests from 8 cities in Hennepin County average 6.30 pCi/L across 10 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 Hennepin County home regardless of zone or a neighbor's results.

Radon FAQ for Long Lake, MN

What EPA Radon Zone is Long Lake in?
Long Lake and the 55356 zip code are in Hennepin 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 Long Lake?
No homeowner radon tests have been submitted for Long Lake yet. Because radon is driven by regional soil and bedrock geology, readings from the closest cities—and the Hennepin County average—are the best available indicator of local conditions until Long 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 Long Lake?
Radon mitigation in Long 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 Long 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.