Merrimac, WI Radon Levels

Q: What EPA Radon Zone is Merrimac in?

Merrimac is in Sauk County, EPA Zone 2.

Q: How much does radon mitigation cost in Merrimac?

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

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

Merrimac, WI Radon Facts

EPA Radon Zone Zone 2 — Moderate Risk 2–4 pCi/L (Zone 2)

County Sauk County, WI

Zip Code 53561

Situated along the Wisconsin River in Sauk County, Merrimac's location within the Madison Metro area places it over Paleozoic sandstone formations that can contribute to radon accumulation in zip code 53561. Testing data remains limited for this riverside community, making individual home assessment particularly important. The area's combination of river valley soils, underlying bedrock, and seasonal groundwater changes can create variable radon conditions that differ significantly from home to home.

6.75

pCi/L area average

Above EPA Action Level

Sauk County average: 6.75 pCi/L, based on 4 user-submitted tests across 3 cities in the county. No homeowner readings have been submitted for Merrimac 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+

Merrimac, 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 Merrimac, WI

No homeowner tests have been submitted for Merrimac 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
Portage	13.9 mi	9.00 pCi/L	1
Arlington	14.1 mi	6.00 pCi/L	1
Waunakee	16.7 mi	5.50 pCi/L	2
Pardeeville	18.5 mi	4.00 pCi/L	1
Middleton	20.4 mi	4.00 pCi/L	1
Reedsburg	20.8 mi	5.00 pCi/L	1
Spring Green	25.8 mi	4.00 pCi/L	1
Verona	26.9 mi	18.00 pCi/L	1

Sauk County Radon Profile

The soils and bedrock of Sauk County place it in EPA Radon Zone 2, a moderate-risk classification with predicted indoor averages of 2 to 4 pCi/L. Homeowner-submitted tests from 3 cities in Sauk County average 6.75 pCi/L across 4 tests — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. Since radon is the second leading cause of lung cancer nationally, the EPA urges every household in Sauk County to test, as levels can differ between neighboring homes.

Radon FAQ for Merrimac, WI

What EPA Radon Zone is Merrimac in?

Merrimac and the 53561 zip code are in Sauk County, which has an EPA assigned Radon Zone of 2. A zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L.

Why are radon readings shown from areas near Merrimac?

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

Radon mitigation in Merrimac 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 Merrimac?

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.