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Dwight, IL Radon Levels

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


Dwight, IL Radon Facts

EPA Radon Zone Zone 1 — High Risk > 4.0 pCi/L (Zone 1)
County Livingston County, IL
Zip Code 60420
Avg. User Level 7.00 pCi/L
User Tests 1

Dwight in Livingston County shows an average radon level of 7.0 pCi/L based on recent testing, exceeding the EPA's 4.0 pCi/L action threshold. This small community along the Chicago metropolitan area's southern edge sits atop deep glacial moraine deposits over limestone bedrock, conditions that contribute to elevated radon production across central Illinois. The area's mix of historic homes and agricultural properties, many with full basements, provides ideal conditions for radon accumulation.

7.00
pCi/L average
Above EPA Action Level

Based on 1 user-submitted radon test for homes in Dwight, IL. The EPA recommends taking action at or above 4.0 pCi/L.

0
4.0 EPA
10+

Dwight, IL Radon Mitigation

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Dwight, IL Radon Levels

User-submitted radon test readings from homes in the Dwight area.

Radon LevelCityHome AgeFoundation
7 pCi/L Dwight, IL 51-99 Years Full Basement

Have a radon test result for Dwight? Submit your reading to help other homeowners.

Radon Readings Near Dwight, IL

Compare radon levels in Dwight with the closest nearby cities that have user-submitted test data.

CityDistanceAvg User LevelReadings
Pontiac 18.5 mi 10.50 pCi/L 2
Streator 21.7 mi 7.00 pCi/L 1
Marseilles 22.1 mi 9.00 pCi/L 1
Ancona 23.6 mi 20.00 pCi/L 1
Fairbury 24.3 mi 4.00 pCi/L 1
Minooka 26.7 mi 11.00 pCi/L 1
Bourbonnais 28.4 mi 4.00 pCi/L 1
Ashkum 28.5 mi 19.00 pCi/L 1

Livingston County Radon Profile

Livingston 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 4 cities in Livingston County average 10.40 pCi/L across 5 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 Livingston County to test, as levels can differ between neighboring homes.

Radon FAQ for Dwight, IL

What is the average radon level in Dwight, IL?
Based on 1 user-submitted test, the average radon level in Dwight is 7.00 pCi/L. This exceeds the EPA's recommended action level of 4.0 pCi/L, and radon testing is recommended for all homes in the area.
What EPA Radon Zone is Dwight in?
Dwight and the 60420 zip code are in Livingston 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.
How much does radon mitigation cost in Dwight?
Radon mitigation in Dwight 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 Dwight?
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.