Bagley, WI Radon Levels

Q: What EPA Radon Zone is Bagley in?

Bagley is in Grant County, EPA Zone 1.

Q: Why are radon readings shown from areas near Bagley?

No homeowner radon tests have been submitted for Bagley yet, so readings from the closest cities and the Grant County average are used as the best available indicator of local conditions. The EPA recommends testing every individual home.

Q: How much does radon mitigation cost in Bagley?

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

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

Bagley, WI Radon Facts

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

County Grant County, WI

Zip Code 53801

This southwestern Wisconsin community in Grant County sits within EPA Zone 1, where the region's driftless area geology and limestone bedrock create high radon potential. The area's deep river valleys and older housing stock, many homes featuring full basements built into hillsides, provide ideal conditions for radon accumulation. Given the absence of testing data and Wisconsin's generally high radon levels, Bagley residents should prioritize radon testing.

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 Bagley 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+

Bagley, 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 Bagley, WI

No homeowner tests have been submitted for Bagley 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
Prairie Du Chien	8.8 mi	10.00 pCi/L	2
Potosi	24.6 mi	17.00 pCi/L	1
Blue River	32.7 mi	6.00 pCi/L	1
Viroqua	44.0 mi	5.00 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 Bagley, WI

What EPA Radon Zone is Bagley in?

Bagley and the 53801 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 Bagley?

No homeowner radon tests have been submitted for Bagley 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 Bagley 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 Bagley?

Radon mitigation in Bagley 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 Bagley?

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.