Downs, IL Radon Levels

Q: What EPA Radon Zone is Downs in?

Downs is in McLean County, EPA Zone 1.

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

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

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

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

Downs, IL Radon Facts

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

County McLean County, IL

Zip Code 61736

Positioned in McLean County within central Illinois prairie country, Downs sits atop deep glacial moraine deposits over limestone bedrock that contribute to the region's moderate-to-high radon potential. While comprehensive testing data for zip code 61736 in the Bloomington Metro area remains limited, the EPA Zone 1 classification suggests high radon potential. Residents should conduct thorough radon testing, especially in homes with traditional full basements common throughout this agricultural community.

8.50

pCi/L area average

Above EPA Action Level

McLean County average: 8.50 pCi/L, based on 8 user-submitted tests across 3 cities in the county. No homeowner readings have been submitted for Downs 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+

Downs, IL Radon Mitigation

Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.

Need Radon Mitigation or Testing in Downs?

100% Free, No-Obligation Quotes
Matches You with State-Licensed McLean County Pros

1-800-299-3578 309-716-3952 (local) Toll-free · Mon–Fri 8am–6pm ET

Radon Readings Near Downs, IL

No homeowner tests have been submitted for Downs 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
Le Roy	6.8 mi	5.00 pCi/L	1
Bloomington	8.2 mi	11.33 pCi/L	3
Normal	10.1 mi	7.25 pCi/L	4
Mackinaw	26.9 mi	20.00 pCi/L	1
Mahomet	28.7 mi	5.00 pCi/L	1
Fairbury	30.2 mi	4.00 pCi/L	1
Monticello	30.2 mi	4.50 pCi/L	2
Pontiac	35.2 mi	10.50 pCi/L	2

McLean County Radon Profile

McLean County falls in EPA Radon Zone 1, meaning the local uranium-bearing geology is predicted to drive average indoor radon screening levels above the EPA's 4 pCi/L action threshold. Homeowner-submitted tests from 3 cities in McLean County average 8.50 pCi/L across 8 tests — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. Since radon is the second leading cause of lung cancer nationally, the EPA urges every household in McLean County to test, as levels can differ between neighboring homes.

Radon FAQ for Downs, IL

What EPA Radon Zone is Downs in?

Downs and the 61736 zip code are in McLean 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 Downs?

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

Radon mitigation in Downs 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 Downs?

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.