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Greenville, WI Radon Levels

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


Greenville, WI Radon Facts

EPA Radon Zone Zone 2 — Moderate Risk 2–4 pCi/L (Zone 2)
County Outagamie County, WI
Zip Code 54942
Avg. User Level 7.00 pCi/L
User Tests 1

Located in Outagamie County within the Fox River Valley region, Greenville sits on glacial deposits over Paleozoic bedrock that contribute to significant radon potential. Current testing data reveals an average radon level of 7.0 pCi/L, substantially exceeding the EPA action threshold. The area's predominantly single-family homes with full basements, typical of Wisconsin construction, create ideal conditions for radon accumulation in the 54942 zip code.

7.00
pCi/L average
Above EPA Action Level

Based on 1 user-submitted radon test for homes in Greenville, WI. The EPA recommends taking action at or above 4.0 pCi/L.

0
4.0 EPA
10+

Greenville, WI Radon Mitigation

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

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Greenville, WI Radon Levels

User-submitted radon test readings from homes in the Greenville area.

Radon LevelCityHome AgeFoundation
7 pCi/L Greenville, WI 21-50 Years Partial Basement

Have a radon test result for Greenville? Submit your reading to help other homeowners.

Radon Readings Near Greenville, WI

Compare radon levels in Greenville with the closest nearby cities that have user-submitted test data.

CityDistanceAvg User LevelReadings
Oshkosh 19.7 mi 19.00 pCi/L 1
Pulaski 28.3 mi 4.00 pCi/L 1
Green Bay 29.3 mi 4.00 pCi/L 1
New Holstein 33.0 mi 7.00 pCi/L 1
Fond Du Lac 36.7 mi 5.00 pCi/L 1
Green Lake 38.1 mi 6.00 pCi/L 1
Wautoma 39.6 mi 15.00 pCi/L 1
Gresham 40.2 mi 9.00 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 Greenville, WI

What is the average radon level in Greenville, WI?
Based on 1 user-submitted test, the average radon level in Greenville is 7.00 pCi/L. This exceeds the EPA's recommended action level of 4.0 pCi/L, and radon testing is recommended for all homes in the area.
What EPA Radon Zone is Greenville in?
Greenville and the 54942 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.
How much does radon mitigation cost in Greenville?
Radon mitigation in Greenville 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 Greenville?
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.