Chili, WI Radon Levels

Q: What EPA Radon Zone is Chili in?

Chili is in Clark County, EPA Zone 2.

Q: Why are radon readings shown from areas near Chili?

No homeowner radon tests have been submitted for Chili yet, so readings from the closest cities and the Clark County average are used as the best available indicator of local conditions. The EPA recommends testing every individual home.

Q: How much does radon mitigation cost in Chili?

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

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

Chili, WI Radon Facts

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

County Clark County, WI

Zip Code 54420

Found in rural Clark County, Chili sits in central Wisconsin where glacial deposits over sandstone bedrock create moderate radon potential across the region. The community's housing consists primarily of single-family homes and farmsteads, many featuring full basements common in Wisconsin's construction practices. With testing data for zip code 54420 currently limited, residents should consider individual home testing given Wisconsin's known radon challenges.

7.69

pCi/L area average

Above EPA Action Level

Nearby homeowner readings average 7.69 pCi/L, based on 16 tests from 10 nearby cities. No readings have been submitted for Chili 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+

Chili, 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 Chili, WI

No homeowner tests have been submitted for Chili 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
Marshfield	9.2 mi	13.50 pCi/L	2
Stratford	18.5 mi	13.00 pCi/L	1
Wisconsin Rapids	29.8 mi	4.50 pCi/L	2
Black River Falls	32.8 mi	9.00 pCi/L	1
Nekoosa	33.7 mi	6.00 pCi/L	1
Mosinee	35.2 mi	6.00 pCi/L	1
Medford	36.0 mi	7.50 pCi/L	2
Stevens Point	40.9 mi	6.00 pCi/L	3

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 Chili, WI

What EPA Radon Zone is Chili in?

Chili and the 54420 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 Chili?

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

Radon mitigation in Chili 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 Chili?

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.