Lake Tomahawk, WI Radon Levels

Q: What EPA Radon Zone is Lake Tomahawk in?

Lake Tomahawk is in Oneida County, EPA Zone 2.

Q: How much does radon mitigation cost in Lake Tomahawk?

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

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

Lake Tomahawk, WI Radon Facts

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

County Oneida County, WI

Zip Code 54539

Nestled in Wisconsin's Northwoods, this Oneida County community sits on glacial deposits over Precambrian bedrock formations. Testing data for radon levels in the 54539 area remains limited, making individual home testing essential given the region's geological characteristics. Many seasonal and year-round homes in this lake community have basements or crawl spaces that require radon evaluation.

7.00

pCi/L area average

Above EPA Action Level

Oneida 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 Lake Tomahawk 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+

Lake Tomahawk, 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 Lake Tomahawk, WI

No homeowner tests have been submitted for Lake Tomahawk 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
Saint Germain	9.3 mi	5.00 pCi/L	1
Woodruff	9.5 mi	4.00 pCi/L	1
Minocqua	9.6 mi	5.00 pCi/L	1
Rhinelander	11.8 mi	9.00 pCi/L	1
Sayner	13.1 mi	6.50 pCi/L	2
Eagle River	17.8 mi	4.00 pCi/L	1
Manitowish Waters	27.3 mi	20.00 pCi/L	1
Gleason	32.6 mi	4.00 pCi/L	2

Oneida County Radon Profile

EPA mapping assigns Oneida 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 2 cities in Oneida 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. As the second leading cause of lung cancer in the U.S., radon warrants testing in every Oneida County home regardless of zone or a neighbor's results.

Radon FAQ for Lake Tomahawk, WI

What EPA Radon Zone is Lake Tomahawk in?

Lake Tomahawk and the 54539 zip code are in Oneida 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 Lake Tomahawk?

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

Radon mitigation in Lake Tomahawk 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 Lake Tomahawk?

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.