Sauk City, WI Radon Levels

Q: What EPA Radon Zone is Sauk City in?

Sauk City is in Sauk County, EPA Zone 2.

Q: How much does radon mitigation cost in Sauk City?

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

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

Sauk City, WI Radon Facts

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

County Sauk County, WI

Zip Code 53583

Positioned in Sauk County within the Madison metro area, Sauk City sits along the Wisconsin River where varied geology creates moderate radon potential reflected in its EPA Zone 2 designation. The historic community features a mix of 19th and 20th-century homes, many with basement foundations typical of Wisconsin construction. Testing data for zip code 53583 is currently limited, making individual home testing essential for understanding radon exposure levels.

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 Sauk City 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+

Sauk City, 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 Sauk City, WI

No homeowner tests have been submitted for Sauk City 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
Waunakee	15.7 mi	5.50 pCi/L	2
Middleton	16.3 mi	4.00 pCi/L	1
Spring Green	17.3 mi	4.00 pCi/L	1
Mount Horeb	18.4 mi	9.00 pCi/L	1
Blue Mounds	18.8 mi	15.00 pCi/L	1
Arlington	19.5 mi	6.00 pCi/L	1
Verona	20.9 mi	18.00 pCi/L	1
Ridgeway	21.9 mi	8.00 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 Sauk City, WI

What EPA Radon Zone is Sauk City in?

Sauk City and the 53583 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 Sauk City?

No homeowner radon tests have been submitted for Sauk City 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 Sauk City 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 Sauk City?

Radon mitigation in Sauk City 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 Sauk City?

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.