Harshaw, WI Radon Levels

Q: What EPA Radon Zone is Harshaw in?

Harshaw is in Oneida County, EPA Zone 2.

Q: How much does radon mitigation cost in Harshaw?

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

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

Harshaw, WI Radon Facts

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

County Oneida County, WI

Zip Code 54529

Set in Wisconsin's Northwoods within Oneida County, this small community sits on glacial deposits over granite bedrock that can produce moderate radon levels. The area's seasonal cabins and year-round homes often feature partial basements or crawl spaces typical of northern Wisconsin construction. While specific testing data is limited, the region's geology suggests residents should consider radon testing, particularly in homes with below-grade living spaces.

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 Harshaw 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+

Harshaw, 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 Harshaw, WI

No homeowner tests have been submitted for Harshaw 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
Rhinelander	12.9 mi	9.00 pCi/L	1
Minocqua	14.5 mi	5.00 pCi/L	1
Woodruff	16.9 mi	4.00 pCi/L	1
Saint Germain	18.5 mi	5.00 pCi/L	1
Sayner	22.4 mi	6.50 pCi/L	2
Gleason	24.8 mi	4.00 pCi/L	2
Eagle River	25.3 mi	4.00 pCi/L	1
Manitowish Waters	34.4 mi	20.00 pCi/L	1

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 Harshaw, WI

What EPA Radon Zone is Harshaw in?

Harshaw and the 54529 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 Harshaw?

No homeowner radon tests have been submitted for Harshaw 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 Harshaw 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 Harshaw?

Radon mitigation in Harshaw 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 Harshaw?

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.