Crescent City, IL Radon Levels

Q: What EPA Radon Zone is Crescent City in?

Crescent City is in Iroquois County, EPA Zone 1.

Q: How much does radon mitigation cost in Crescent City?

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

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

Crescent City, IL Radon Facts

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

County Iroquois County, IL

Zip Code 60928

Situated in Iroquois County in eastern Illinois, Crescent City lies within the state's glacial moraine region where deep glacial deposits over limestone bedrock contribute to EPA Zone 1 radon potential. The area's prairie soils and underlying Pennsylvanian formations in zip code 60928 create favorable conditions for radon production. With limited testing data currently available, homeowners should conduct individual testing to understand their specific radon levels in this agricultural community.

19.00

pCi/L area average

Above EPA Action Level

Iroquois County average: 19.00 pCi/L, based on 1 user-submitted test across 1 city in the county. No homeowner readings have been submitted for Crescent City 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+

Crescent City, 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 Crescent City, IL

No homeowner tests have been submitted for Crescent City 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
Ashkum	11.0 mi	19.00 pCi/L	1
Paxton	23.7 mi	4.00 pCi/L	1
Bradley	27.9 mi	5.00 pCi/L	1
Bourbonnais	29.4 mi	4.00 pCi/L	1
Gifford	31.8 mi	10.00 pCi/L	1
Fairbury	34.9 mi	4.00 pCi/L	1
Manteno	35.2 mi	11.67 pCi/L	3
Dwight	38.1 mi	7.00 pCi/L	1

Iroquois County Radon Profile

Iroquois 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 1 city in Iroquois County average 19.00 pCi/L across 1 test — 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 Iroquois County to test, as levels can differ between neighboring homes.

Radon FAQ for Crescent City, IL

What EPA Radon Zone is Crescent City in?

Crescent City and the 60928 zip code are in Iroquois 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 Crescent City?

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

Radon mitigation in Crescent City 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 Crescent City?

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.