Appleton, WI Radon Levels

Q: What EPA Radon Zone is Appleton in?

Appleton is in Outagamie County, EPA Zone 2.

Q: How much does radon mitigation cost in Appleton?

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

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

Appleton, WI Radon Facts

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

County Outagamie County, WI

Zip Code 54911

As part of the Appleton Metro area in Outagamie County, this Wisconsin community sits on glacial deposits that contribute to the region's radon potential. The city's predominantly mid-20th century housing stock, featuring numerous full basements, provides ideal conditions for radon accumulation. With current testing data limited for the 54911 zip code, homeowners should conduct radon testing to determine their specific risk levels in this EPA Zone 2 area.

7.00

pCi/L area average

Above EPA Action Level

Outagamie County average: 7.00 pCi/L, based on 1 user-submitted test across 1 city in the county. No homeowner readings have been submitted for Appleton 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+

Appleton, 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 Appleton, WI

No homeowner tests have been submitted for Appleton 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
Greenville	6.6 mi	7.00 pCi/L	1
Oshkosh	20.1 mi	19.00 pCi/L	1
Green Bay	24.6 mi	4.00 pCi/L	1
Pulaski	27.0 mi	4.00 pCi/L	1
New Holstein	28.2 mi	7.00 pCi/L	1
Fond Du Lac	36.0 mi	5.00 pCi/L	1
Green Lake	41.3 mi	6.00 pCi/L	1
Plymouth	42.4 mi	6.00 pCi/L	1

Outagamie County Radon Profile

EPA mapping assigns Outagamie County to Radon Zone 2, indicating moderate predicted indoor screening levels in the 2 to 4 pCi/L range based on regional geology. Homeowner-submitted tests from 1 city in Outagamie County average 7.00 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 Outagamie County home regardless of zone or a neighbor's results.

Radon FAQ for Appleton, WI

What EPA Radon Zone is Appleton in?

Appleton and the 54911 zip code are in Outagamie 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 Appleton?

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

Radon mitigation in Appleton 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 Appleton?

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.