Willard, WI Radon Levels

Q: What EPA Radon Zone is Willard in?

Willard is in Clark County, EPA Zone 2.

Q: How much does radon mitigation cost in Willard?

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

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

Willard, WI Radon Facts

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

County Clark County, WI

Zip Code 54493

Located in Clark County within Wisconsin's central sand plain region, Willard experiences EPA Zone 2 radon conditions influenced by glacial outwash deposits and underlying Paleozoic bedrock. Testing data for this 54493 community remains limited, highlighting the need for individual home assessments. The area's sandy soils and mixed residential foundation types, typical of rural Wisconsin communities, can create variable radon entry pathways that only direct testing can evaluate.

10.00

pCi/L area average

Above EPA Action Level

Nearby homeowner readings average 10.00 pCi/L, based on 4 tests from 3 nearby cities. No readings have been submitted for Willard 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+

Willard, 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 Willard, WI

No homeowner tests have been submitted for Willard yet, so the closest user-submitted readings from neighboring communities are shown below. Radon varies by home — testing is the only way to know your level.

Radon Level	City	Distance	Home Age	Foundation	Submitted
5 pCi/L	Osseo, WI	25.8 mi	0-20 Years	—	Jul 2024
8 pCi/L	Fall Creek, WI	26.4 mi	0-20 Years	Full Basement	May 2017
7 pCi/L	Marshfield, WI	28.4 mi	0-20 Years	Full Basement	Nov 2020
20 pCi/L	Marshfield, WI	28.4 mi	21-50 Years	Full Basement	Aug 2018

Readings are drawn from the nearest cities with submitted data. Have a result for Willard? Submit your reading to help your neighbors.

Clark County Radon Profile

EPA mapping assigns Clark County to Radon Zone 2, indicating moderate predicted indoor screening levels in the 2 to 4 pCi/L range based on regional geology. Direct test data for Clark County remains limited, so the closest neighboring readings are used here to represent the radon conditions homeowners are likely to encounter. As the second leading cause of lung cancer in the U.S., radon warrants testing in every Clark County home regardless of zone or a neighbor's results.

Radon FAQ for Willard, WI

What EPA Radon Zone is Willard in?

Willard and the 54493 zip code are in Clark 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 Willard?

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

Radon mitigation in Willard 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 Willard?

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.