Lonsdale, MN Radon Levels

Q: What EPA Radon Zone is Lonsdale in?

Lonsdale is in Rice County, EPA Zone 1.

Q: How much does radon mitigation cost in Lonsdale?

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

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

Lonsdale, MN Radon Facts

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

County Rice County, MN

Zip Code 55046

This small Rice County community in zip code 55046 lies within Minnesota's glaciated prairie region, where till deposits over sedimentary bedrock can influence radon production. With minimal testing data available for Lonsdale, residents are encouraged to test their homes individually to establish reliable radon measurements. Minnesota's generally elevated radon potential makes testing especially important, even in smaller communities where comprehensive data may not yet be available.

7.25

pCi/L area average

Above EPA Action Level

Rice County average: 7.25 pCi/L, based on 4 user-submitted tests across 2 cities in the county. No homeowner readings have been submitted for Lonsdale 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+

Lonsdale, 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 Lonsdale, MN

No homeowner tests have been submitted for Lonsdale 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
Montgomery	7.7 mi	5.00 pCi/L	1
Elko New Market	9.4 mi	3.00 pCi/L	1
New Prague	10.0 mi	9.00 pCi/L	2
Faribault	12.7 mi	10.00 pCi/L	2
Northfield	12.8 mi	4.50 pCi/L	2
Lakeville	17.7 mi	6.00 pCi/L	1
Prior Lake	18.2 mi	5.00 pCi/L	1
Farmington	20.0 mi	7.50 pCi/L	2

Rice County Radon Profile

Because of its underlying geology, Rice 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 2 cities in Rice County average 7.25 pCi/L across 4 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 Rice County home regardless of zone or a neighbor's results.

Radon FAQ for Lonsdale, MN

What EPA Radon Zone is Lonsdale in?

Lonsdale and the 55046 zip code are in Rice 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 Lonsdale?

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

Radon mitigation in Lonsdale 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 Lonsdale?

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.