Royalton, IL Radon Levels

Q: What EPA Radon Zone is Royalton in?

Royalton is in Franklin County, EPA Zone 2.

Q: How much does radon mitigation cost in Royalton?

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

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

Royalton, IL Radon Facts

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

County Franklin County, IL

Zip Code 62983

Located in Franklin County in southern Illinois, Royalton sits within the state's coal belt where Pennsylvanian-era formations create EPA Zone 2 radon conditions. The small community in zip code 62983 currently lacks testing data, but the region's sedimentary geology and typical foundation construction warrant homeowner attention. Testing is recommended, especially for properties with basements or enclosed crawl spaces that could trap radon gas.

4.83

pCi/L area average

Above EPA Action Level

Nearby homeowner readings average 4.83 pCi/L, based on 6 tests from 6 nearby cities. No readings have been submitted for Royalton 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+

Royalton, 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 Royalton, IL

No homeowner tests have been submitted for Royalton 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
Murphysboro	14.2 mi	10.00 pCi/L	1
Marion	14.6 mi	5.00 pCi/L	1
Campbell Hill	25.6 mi	1.00 pCi/L	1
Mount Vernon	32.2 mi	4.00 pCi/L	1
Marissa	42.9 mi	4.00 pCi/L	1
Kell	45.3 mi	5.00 pCi/L	1

Franklin County Radon Profile

EPA mapping assigns Franklin 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 Franklin 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 Franklin County home regardless of zone or a neighbor's results.

Radon FAQ for Royalton, IL

What EPA Radon Zone is Royalton in?

Royalton and the 62983 zip code are in Franklin 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 Royalton?

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

Radon mitigation in Royalton 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 Royalton?

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.