Radon in Clay County, Indiana
EPA Zone —County seat: Brazil · 3 licensed contractors listed
Radon Risk: This county has EPA Zone 3 designation — lower predicted radon risk. Testing is still recommended, as individual homes can test high regardless of zone.
Clay County is EPA Zone 1 — the highest predicted radon risk classification. Zone 1 means the county's predicted average indoor radon level exceeds 4 pCi/L, the EPA's action level. Indiana geology, particularly glacial till deposits across central and northern Indiana, contributes to elevated radon levels. Testing is strongly recommended for all homes in Clay County, especially those with basements or crawl spaces.
Radon contractors are licensed statewide and many travel countywide. Browse all Indiana radon contractors — most serve multiple counties.
Radon Testers in Clay County (3)
About Radon Testing in Clay County
- Short-term test kits (48–96 hours) are available at hardware stores for ~$15-30
- A licensed tester provides a certified measurement — often required for real estate transactions
- If results exceed 4 pCi/L, the EPA recommends mitigation
- Mitigation systems typically cost $1,200–$2,000 installed in Indiana
Building Permits in Clay County
Some municipalities require a permit for radon mitigation system installation. Check permit requirements for Clay County on Indiana Permit Finder →