Paris, IL Radon Mitigation and Testing

Q: What is the average radon level in Paris, IL?

Based on 3 user-submitted tests, the average radon level is 9.70 pCi/L.

Q: What EPA Radon Zone is Paris in?

Paris is in Edgar County, EPA Zone 1.

Q: How much does radon mitigation cost in Paris?

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

Avg: 9.70 pCi/L

Edgar County

EPA Zone 1

3 user tests

Situated in Edgar County along the Illinois-Indiana border, Paris has recorded an average radon level of 9.67 pCi/L based on testing in zip code 61944. This level substantially exceeds the EPA action threshold, reflecting east-central Illinois geology where glacial deposits over Pennsylvanian limestone create high radon potential. Local homeowners should prioritize testing and mitigation, as the area's older housing stock with full basements provides ideal conditions for radon accumulation.

9.70

pCi/L average

Above EPA Action Level

Based on 3 user-submitted radon tests for homes in Paris, IL. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Paris, IL Radon Mitigation

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

Paris, IL Radon Testing

Finding qualified radon testing professionals is the first step toward protecting your home.

Paris, Illinois Radon Levels

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

Radon Level	City	Home Age	Foundation	Submitted
20 pCi/L	Paris, IL	51-99 Years	Full Basement	Oct 2025
5 pCi/L	Paris, IL	21-50 Years	Partial Basement	Aug 2024
4 pCi/L	Paris, IL	100+ Years	Full Basement	Oct 2019

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

Paris Radon Facts

Key details about the radon risk profile for Paris and the 61944 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Edgar County, IL

Zip Code

61944

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Avg. User Submitted Level

9.70 pCi/L

User Tests Submitted

Paris and the 61944 zip code are located in Edgar County, which has an EPA assigned Radon Zone of 1. A radon zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Paris, IL

What is the average radon level in Paris, IL?

Based on 3 user-submitted tests, the average radon level in Paris is 9.70 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 Paris in?

Paris and the 61944 zip code are in Edgar 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 Paris?

Radon mitigation in Paris 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 Paris?

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.

Most Active Radon Markets in Illinois

Cities with the most user-submitted radon test data in the state.

City	Avg User Radon Level	Submissions
Buffalo Grove	6.10 pCi/L	10
Crystal Lake	7.25 pCi/L	8
Lake Zurich	6.00 pCi/L	7
Grayslake	5.00 pCi/L	7
New Lenox	10.17 pCi/L	6
Park Ridge	7.00 pCi/L	6
Arlington Heights	6.17 pCi/L	6
Waterloo	9.20 pCi/L	5
Palatine	7.80 pCi/L	5
Round Lake	7.80 pCi/L	5
Northbrook	6.20 pCi/L	5
Mchenry	11.00 pCi/L	4
Dekalb	8.75 pCi/L	4
Columbia	8.00 pCi/L	4
Lisle	7.25 pCi/L	4
Normal	7.25 pCi/L	4
Antioch	7.00 pCi/L	4
Elk Grove Village	7.00 pCi/L	4
Aurora	6.75 pCi/L	4
Hoffman Estates	6.75 pCi/L	4