Radon in Adams County, Indiana
EPA Zone —County seat: Decatur · 8 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.
Adams 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 Adams 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 Adams County (8)
About Radon Testing in Adams 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 Adams County
Some municipalities require a permit for radon mitigation system installation. Check permit requirements for Adams County on Indiana Permit Finder →