Theresa, WI Radon Levels

Q: What EPA Radon Zone is Theresa in?

Theresa is in Dodge County, EPA Zone 1.

Q: How much does radon mitigation cost in Theresa?

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

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

Theresa, WI Radon Facts

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

County Dodge County, WI

Zip Code 53091

Situated in Dodge County within the Milwaukee Metro area, Theresa's glacial deposits over limestone bedrock contribute to elevated radon potential throughout southeastern Wisconsin. Testing data for zip code 53091 is currently limited, making professional radon testing essential for homeowners in this EPA Zone 1 community.

7.00

pCi/L area average

Above EPA Action Level

Dodge County average: 7.00 pCi/L, based on 2 user-submitted tests across 2 cities in the county. No homeowner readings have been submitted for Theresa 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+

Theresa, 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 Theresa?

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Radon Readings Near Theresa, WI

No homeowner tests have been submitted for Theresa 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
Kewaskum	12.8 mi	8.00 pCi/L	1
West Bend	13.8 mi	8.00 pCi/L	1
Slinger	14.5 mi	20.00 pCi/L	1
Juneau	14.7 mi	4.00 pCi/L	1
Fond Du Lac	18.7 mi	5.00 pCi/L	1
Beaver Dam	19.9 mi	10.00 pCi/L	1
Watertown	23.0 mi	7.00 pCi/L	1
Cedarburg	26.3 mi	6.00 pCi/L	1

Dodge County Radon Profile

The bedrock and soils beneath Dodge 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 2 cities in Dodge County average 7.00 pCi/L across 2 tests — 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 Dodge County.

Radon FAQ for Theresa, WI

What EPA Radon Zone is Theresa in?

Theresa and the 53091 zip code are in Dodge 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 Theresa?

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

Radon mitigation in Theresa 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 Theresa?

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.