Westfield, IL Radon Levels

Q: What EPA Radon Zone is Westfield in?

Westfield is in Clark County, EPA Zone 2.

Q: How much does radon mitigation cost in Westfield?

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

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

Westfield, IL Radon Facts

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

County Clark County, IL

Zip Code 62474

Situated in Clark County in east-central Illinois, Westfield lies on glacial deposits over coal-bearing sedimentary rock formations. Testing data for the 62474 zip code area remains limited, but homeowners should consider radon testing as the underlying geology can create conditions for radon accumulation.

10.74

pCi/L area average

Above EPA Action Level

Nearby homeowner readings average 10.74 pCi/L, based on 19 tests from 10 nearby cities. No readings have been submitted for Westfield 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+

Westfield, IL 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 Westfield, IL

No homeowner tests have been submitted for Westfield 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
Charleston	9.8 mi	8.00 pCi/L	1
Paris	19.2 mi	9.67 pCi/L	3
Mattoon	20.3 mi	9.33 pCi/L	3
Tuscola	28.2 mi	17.00 pCi/L	1
Palestine	37.4 mi	18.50 pCi/L	2
Effingham	38.0 mi	4.33 pCi/L	3
Homer	40.0 mi	20.00 pCi/L	1
Shelbyville	43.2 mi	17.00 pCi/L	1

Clark County Radon Profile

Clark County is mapped as EPA Radon Zone 2, where the local geology is predicted to produce moderate indoor screening levels between 2 and 4 pCi/L. User-submitted readings are still sparse within Clark County itself, so the nearby measurements shown on this page provide the closest real-world picture of local radon conditions. Radon is the second leading cause of lung cancer in the United States, and a short-term test is the only way to confirm a specific home's level in Clark County.

Radon FAQ for Westfield, IL

What EPA Radon Zone is Westfield in?

Westfield and the 62474 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 Westfield?

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

Radon mitigation in Westfield 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 Westfield?

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.