Superior, WI Radon Levels

Q: What EPA Radon Zone is Superior in?

Superior is in Douglas County, EPA Zone 2.

Q: How much does radon mitigation cost in Superior?

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

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

Superior, WI Radon Facts

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

County Douglas County, WI

Zip Code 54880

Superior in Douglas County overlooks Lake Superior within the Duluth Metro area, sitting on ancient Precambrian bedrock formations known to contain uranium-bearing minerals. Limited radon testing data for zip code 54880 makes professional assessment particularly important for residents. The combination of crystalline bedrock geology and the region's traditional basement construction creates conditions where radon can accumulate significantly in homes throughout this Great Lakes community.

6.00

pCi/L area average

Above EPA Action Level

Nearby homeowner readings average 6.00 pCi/L, based on 2 tests from 2 nearby cities. No readings have been submitted for Superior yet, so the closest recorded data is shown as a benchmark. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Superior, 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 Superior, WI

No homeowner tests have been submitted for Superior 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
Minong	42.8 mi	5.00 pCi/L	1
Drummond	46.8 mi	7.00 pCi/L	1

Douglas County Radon Profile

The soils and bedrock of Douglas County place it in EPA Radon Zone 2, a moderate-risk classification with predicted indoor averages of 2 to 4 pCi/L. Few homeowner tests have been logged inside Douglas County so far, which is why this page draws on the nearest recorded readings to illustrate regional radon levels. Since radon is the second leading cause of lung cancer nationally, the EPA urges every household in Douglas County to test, as levels can differ between neighboring homes.

Radon FAQ for Superior, WI

What EPA Radon Zone is Superior in?

Superior and the 54880 zip code are in Douglas 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 Superior?

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

Radon mitigation in Superior 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 Superior?

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.