Princeton, WI Radon Levels

Q: What EPA Radon Zone is Princeton in?

Princeton is in Green Lake County, EPA Zone 1.

Q: How much does radon mitigation cost in Princeton?

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

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

Princeton, WI Radon Facts

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

County Green Lake County, WI

Zip Code 54968

Princeton in Green Lake County sits in central Wisconsin's glacial landscape, where complex geological conditions can influence radon levels. While testing data for zip code 54968 remains limited, Wisconsin's glacial deposits over crystalline bedrock often create elevated radon potential. Individual home testing provides the most accurate assessment for area residents.

6.00

pCi/L area average

Above EPA Action Level

Green Lake County average: 6.00 pCi/L, based on 1 user-submitted test across 1 city in the county. No homeowner readings have been submitted for Princeton 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+

Princeton, 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 Princeton, WI

No homeowner tests have been submitted for Princeton 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
Green Lake	7.8 mi	6.00 pCi/L	1
Wautoma	16.9 mi	15.00 pCi/L	1
Coloma	22.3 mi	17.00 pCi/L	1
Pardeeville	23.7 mi	4.00 pCi/L	1
Portage	26.7 mi	9.00 pCi/L	1
Hancock	28.4 mi	5.00 pCi/L	1
Beaver Dam	30.0 mi	10.00 pCi/L	1
Oshkosh	30.6 mi	19.00 pCi/L	1

Green Lake County Radon Profile

Green Lake County falls in EPA Radon Zone 1, meaning the local uranium-bearing geology is predicted to drive average indoor radon screening levels above the EPA's 4 pCi/L action threshold. Homeowner-submitted tests from 1 city in Green Lake County average 6.00 pCi/L across 1 test — 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 Green Lake County to test, as levels can differ between neighboring homes.

Radon FAQ for Princeton, WI

What EPA Radon Zone is Princeton in?

Princeton and the 54968 zip code are in Green Lake 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 Princeton?

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

Radon mitigation in Princeton 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 Princeton?

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.