Sidney, IL Radon Levels

Q: What EPA Radon Zone is Sidney in?

Sidney is in Champaign County, EPA Zone 1.

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

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

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

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

Sidney, IL Radon Facts

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

County Champaign County, IL

Zip Code 61877

As part of the Champaign Metro area, Sidney in Champaign County rests on deep glacial deposits over limestone bedrock that contribute to elevated radon potential across central Illinois. This rural community features predominantly older farmhouses and mid-century homes, many with full basements where radon can concentrate. Testing data for zip code 61877 remains limited, making individual home radon testing essential for determining specific exposure risks.

10.00

pCi/L area average

Above EPA Action Level

Champaign County average: 10.00 pCi/L, based on 7 user-submitted tests across 5 cities in the county. No homeowner readings have been submitted for Sidney 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+

Sidney, 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 Sidney, IL

No homeowner tests have been submitted for Sidney 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
Homer	5.7 mi	20.00 pCi/L	1
Urbana	7.8 mi	15.00 pCi/L	1
Champaign	12.4 mi	6.67 pCi/L	3
Tuscola	19.1 mi	17.00 pCi/L	1
Gifford	19.4 mi	10.00 pCi/L	1
Mahomet	20.9 mi	5.00 pCi/L	1
Danville	23.9 mi	5.33 pCi/L	3
Monticello	26.4 mi	4.50 pCi/L	2

Champaign County Radon Profile

Because of its underlying geology, Champaign 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 5 cities in Champaign County average 10.00 pCi/L across 7 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 Champaign County home regardless of zone or a neighbor's results.

Radon FAQ for Sidney, IL

What EPA Radon Zone is Sidney in?

Sidney and the 61877 zip code are in Champaign 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 Sidney?

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

Radon mitigation in Sidney 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 Sidney?

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.