Viola, IL Radon Levels

Q: What EPA Radon Zone is Viola in?

Viola is in Mercer County, EPA Zone 1.

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

No homeowner radon tests have been submitted for Viola yet, so readings from the closest cities and the Mercer 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 Viola?

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

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

Viola, IL Radon Facts

EPA Radon Zone Zone 1 — High Risk > 4.0 pCi/L (Zone 1)

County Mercer County, IL

Zip Code 61486

Viola in western Illinois's Mercer County sits within the Mississippi River valley region where alluvial soils over limestone bedrock create variable radon potential throughout the Quad Cities area. The community's housing includes older farmhouses and rural properties, many with full basements typical of western Illinois construction. With radon testing data currently unavailable for the 61486 zip code area, local residents should consider individual home testing since this region falls within EPA Zone 1, indicating high radon potential.

6.00

pCi/L area average

Above EPA Action Level

Mercer County average: 6.00 pCi/L, based on 1 user-submitted test across 1 city in the county. No homeowner readings have been submitted for Viola itself yet, so this county figure is the closest available benchmark. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Viola, 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 Viola, IL

No homeowner tests have been submitted for Viola 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
New Windsor	7.0 mi	6.00 pCi/L	1
Orion	15.5 mi	4.00 pCi/L	1
Coal Valley	17.4 mi	12.00 pCi/L	1
Rock Island	20.0 mi	4.50 pCi/L	2
Monmouth	20.3 mi	8.00 pCi/L	1
Moline	20.5 mi	5.00 pCi/L	1
Knoxville	25.7 mi	8.00 pCi/L	1
Geneseo	28.6 mi	6.00 pCi/L	1

Mercer County Radon Profile

Because of its underlying geology, Mercer County is mapped as EPA Radon Zone 1 — the most elevated classification — where predicted indoor screening averages exceed 4 pCi/L. Homeowner-submitted tests from 1 city in Mercer County average 6.00 pCi/L across 1 test — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. As the second leading cause of lung cancer in the U.S., radon warrants testing in every Mercer County home regardless of zone or a neighbor's results.

Radon FAQ for Viola, IL

What EPA Radon Zone is Viola in?

Viola and the 61486 zip code are in Mercer County, which has an EPA assigned Radon Zone of 1. A zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L.

Why are radon readings shown from areas near Viola?

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

Radon mitigation in Viola 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 Viola?

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.