West Union, IL Radon Levels

Q: What EPA Radon Zone is West Union in?

West Union is in Clark County, EPA Zone 2.

Q: How much does radon mitigation cost in West Union?

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

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

West Union, IL Radon Facts

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

County Clark County, IL

Zip Code 62477

Found in Clark County in east-central Illinois, West Union sits in an area where glacial deposits over Pennsylvanian bedrock create moderate radon potential. The community's housing includes both historic farmsteads and mid-century construction, with basement foundations common throughout the region. Testing data for zip code 62477 remains limited, making individual home testing essential for residents to understand their radon exposure risk.

9.23

pCi/L area average

Above EPA Action Level

Nearby homeowner readings average 9.23 pCi/L, based on 13 tests from 6 nearby cities. No readings have been submitted for West Union 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+

West Union, 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 West Union, IL

No homeowner tests have been submitted for West Union 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
Palestine	16.5 mi	18.50 pCi/L	2
Paris	25.9 mi	9.67 pCi/L	3
Charleston	32.8 mi	8.00 pCi/L	1
Bridgeport	37.4 mi	5.00 pCi/L	1
Mattoon	42.1 mi	9.33 pCi/L	3
Effingham	49.4 mi	4.33 pCi/L	3

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 West Union, IL

What EPA Radon Zone is West Union in?

West Union and the 62477 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 West Union?

No homeowner radon tests have been submitted for West Union 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 West Union 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 West Union?

Radon mitigation in West Union 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 West Union?

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.