Maple Plain, MN Radon Levels

Q: What EPA Radon Zone is Maple Plain in?

Maple Plain is in Hennepin County, EPA Zone 1.

Q: How much does radon mitigation cost in Maple Plain?

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

Check local Maple Plain radon levels and find certified testing and mitigation professionals to keep your home safe

Maple Plain, MN Radon Facts

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

County Hennepin County, MN

Zip Code 55359

Positioned in Hennepin County within the Minneapolis-St. Paul Metro, Maple Plain experiences Minnesota's high radon potential environment created by glacial deposits over limestone bedrock. While testing data for zip code 55359 is still developing, the area's Zone 1 classification indicates significant radon risk. Homeowners in this western suburban community should prioritize professional testing, especially given the region's typical basement construction and challenging geological conditions.

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 Maple Plain 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+

Maple Plain, 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 Maple Plain, MN

No homeowner tests have been submitted for Maple Plain 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
Mound	3.5 mi	6.00 pCi/L	1
Delano	6.3 mi	5.00 pCi/L	1
Excelsior	8.0 mi	13.00 pCi/L	1
Victoria	8.6 mi	4.00 pCi/L	1
Loretto	8.9 mi	6.00 pCi/L	1
Minnetonka	11.4 mi	5.00 pCi/L	1
Chaska	12.7 mi	7.00 pCi/L	1
Hopkins	13.0 mi	7.00 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 Maple Plain, MN

What EPA Radon Zone is Maple Plain in?

Maple Plain and the 55359 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 Maple Plain?

No homeowner radon tests have been submitted for Maple Plain 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 Maple Plain 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 Maple Plain?

Radon mitigation in Maple Plain 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 Maple Plain?

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.