Meredosia, IL Radon Levels

Q: What EPA Radon Zone is Meredosia in?

Meredosia is in Morgan County, EPA Zone 1.

Q: How much does radon mitigation cost in Meredosia?

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

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

Meredosia, IL Radon Facts

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

County Morgan County, IL

Zip Code 62665

Positioned along the Illinois River in Morgan County, Meredosia sits where river valley alluvial soils meet underlying limestone formations that can contribute to radon production. Testing data for zip code 62665 remains limited, making professional radon measurement essential for homeowners in this small river community. The combination of older housing stock and variable geological conditions throughout west-central Illinois makes testing particularly valuable for establishing baseline radon levels.

9.00

pCi/L area average

Above EPA Action Level

Morgan County average: 9.00 pCi/L, based on 2 user-submitted tests across 1 city in the county. No homeowner readings have been submitted for Meredosia 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+

Meredosia, 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 Meredosia, IL

No homeowner tests have been submitted for Meredosia 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
Griggsville	12.6 mi	4.00 pCi/L	1
Jacksonville	17.2 mi	9.00 pCi/L	2
Pittsfield	20.8 mi	5.00 pCi/L	1
White Hall	27.7 mi	6.00 pCi/L	1
Lincolns New Salem	42.3 mi	8.00 pCi/L	1
Quincy	43.6 mi	7.50 pCi/L	2
Auburn	44.8 mi	6.00 pCi/L	1
Chatham	44.8 mi	3.00 pCi/L	1

Morgan County Radon Profile

Because of its underlying geology, Morgan 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 Morgan County average 9.00 pCi/L across 2 tests — 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 Morgan County home regardless of zone or a neighbor's results.

Radon FAQ for Meredosia, IL

What EPA Radon Zone is Meredosia in?

Meredosia and the 62665 zip code are in Morgan 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 Meredosia?

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

Radon mitigation in Meredosia 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 Meredosia?

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.