Montfort, WI Radon Levels

Q: What EPA Radon Zone is Montfort in?

Montfort is in Grant County, EPA Zone 1.

Q: How much does radon mitigation cost in Montfort?

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

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

Montfort, WI Radon Facts

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

County Grant County, WI

Zip Code 53569

Part of Wisconsin's Grant County in the Madison Metro area, Montfort sits on dolomite bedrock that can contribute to moderate radon levels throughout the region. The community's mix of older farmhouses and newer homes creates varying radon entry pathways in zip code 53569. While comprehensive local testing data isn't available, Wisconsin's moderate radon potential suggests homeowners should conduct testing, especially in homes with basements.

17.00

pCi/L area average

Above EPA Action Level

Grant County average: 17.00 pCi/L, based on 1 user-submitted test across 1 city in the county. No homeowner readings have been submitted for Montfort 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+

Montfort, WI 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 Montfort, WI

No homeowner tests have been submitted for Montfort 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
Blue River	19.4 mi	6.00 pCi/L	1
Ridgeway	23.1 mi	8.00 pCi/L	1
Potosi	23.7 mi	17.00 pCi/L	1
Spring Green	24.0 mi	4.00 pCi/L	1
Blue Mounds	30.9 mi	15.00 pCi/L	1
Prairie Du Chien	34.4 mi	10.00 pCi/L	2
Mount Horeb	35.6 mi	9.00 pCi/L	1
New Glarus	42.1 mi	7.00 pCi/L	1

Grant County Radon Profile

Because of its underlying geology, Grant 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 1 city in Grant County average 17.00 pCi/L across 1 test — 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 Grant County home regardless of zone or a neighbor's results.

Radon FAQ for Montfort, WI

What EPA Radon Zone is Montfort in?

Montfort and the 53569 zip code are in Grant 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 Montfort?

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

Radon mitigation in Montfort 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 Montfort?

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.