Find Radon Testers in Illinois
Certified radon testing and mitigation professionals across Illinois. Browse 20+ listed providers below.
Radon Risk Level
EPA data for this state
High radon state — northern and central IL especially elevated.
Browse by City in Illinois
Chicago
16 providers
Lombard
4 providers
Northbrook
3 providers
Dunlap
3 providers
Morton Grove
2 providers
Arlington Heights
2 providers
Plainfield
2 providers
Saint Charles
2 providers
Bolingbrook
1 provider
Danville
1 provider
New Lenox
1 provider
Rockford
1 provider
Berwyn
1 provider
Joliet
1 provider
Burbank
1 provider
Springfield
1 provider
Warrenville
1 provider
Mokena
1 provider
Herrin
1 provider
Geneva
1 provider
Oakwood
1 provider
Pontiac
1 provider
Milan
1 provider
Algonquin
1 provider
Antioch
1 provider
Troy
1 provider
Westmont
1 provider
Bartlett
1 provider
Bourbonnais
1 provider
Elgin
1 provider
Big Rock
1 provider
East Alton
1 provider
Macomb
1 provider
Prospect Heights
1 provider
South Beloit
1 provider
Carol Stream
1 provider
La Grange Park
1 provider
Montgomery
1 provider
Hoffman Estates
1 provider
Lisle
1 provider
Oswego
1 provider
Wayne
1 provider
Nauvoo
1 provider
Savanna
1 provider
Barrington
1 provider
Glendale Heights
1 provider
Calumet City
1 provider
Champaign
1 provider
Geneseo
1 provider
Ingleside
1 provider
Lake Bluff
1 provider
Lockport
1 provider
Long Grove
1 provider
Palatine
1 provider
Naperville
1 provider
Oak Forest
1 provider
Schaumburg
1 provider
Swansea
1 provider
Tinley Park
1 provider
Trenton
1 provider
Tuscola
1 provider
Volo
1 provider
Wauconda
1 provider
Radon Providers in Illinois(showing top 20)
Radon Testing in Illinois — FAQ
How often should I test for radon in Illinois?
The EPA recommends testing every two years in Illinois. Always test when moving into a new home, after renovations that affect lower levels, and after installing a mitigation system.
What is the EPA action level for radon?
The EPA recommends taking action to reduce radon if indoor levels reach 4 pCi/L or higher. Even levels between 2–4 pCi/L present risk, and mitigation is recommended where feasible.
Do I need a certified radon tester in Illinois?
For real estate transactions, most states require a certified tester. Look for NRPP or AARST-NRPP certification. Illinois may also have its own state program — check your state radon office for specific requirements.