Hollandale, WI Radon Levels

Q: What EPA Radon Zone is Hollandale in?

Hollandale is in Iowa County, EPA Zone 1.

Q: How much does radon mitigation cost in Hollandale?

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

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

Hollandale, WI Radon Facts

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

County Iowa County, WI

Zip Code 53544

Located in Iowa County within Wisconsin's Driftless Area near Madison, Hollandale sits on unique topography where glacial activity bypassed the region's limestone and sandstone formations. Although radon testing data for zip code 53544 is currently limited, the area's karst geology and ridge-and-valley landscape can create variable radon conditions. Local residents should test their homes, particularly older properties with stone foundations common in this historic farming community.

8.00

pCi/L area average

Above EPA Action Level

Iowa County average: 8.00 pCi/L, based on 1 user-submitted test across 1 city in the county. No homeowner readings have been submitted for Hollandale 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+

Hollandale, WI Radon Mitigation

Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.

Need Radon Mitigation or Testing in Hollandale?

100% Free, No-Obligation Quotes
Matches You with State-Licensed Iowa County Pros

1-800-299-3578 608-318-4941 (local) Toll-free · Mon–Fri 8am–6pm ET

Radon Readings Near Hollandale, WI

No homeowner tests have been submitted for Hollandale 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 Mounds	9.7 mi	15.00 pCi/L	1
Ridgeway	9.8 mi	8.00 pCi/L	1
Mount Horeb	12.2 mi	9.00 pCi/L	1
New Glarus	14.3 mi	7.00 pCi/L	1
Verona	20.1 mi	18.00 pCi/L	1
Spring Green	22.9 mi	4.00 pCi/L	1
Monroe	23.7 mi	13.00 pCi/L	2
Middleton	25.9 mi	4.00 pCi/L	1

Iowa County Radon Profile

The bedrock and soils beneath Iowa County are classified by the EPA as Radon Zone 1, the highest-risk tier, with predicted average indoor screening levels above 4 pCi/L. Homeowner-submitted tests from 1 city in Iowa County average 8.00 pCi/L across 1 test — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. Radon is the second leading cause of lung cancer in the United States, and a short-term test is the only way to confirm a specific home's level in Iowa County.

Radon FAQ for Hollandale, WI

What EPA Radon Zone is Hollandale in?

Hollandale and the 53544 zip code are in Iowa 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 Hollandale?

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

Radon mitigation in Hollandale 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 Hollandale?

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.