EPA Zone 1 (Highest Risk)☢️ Avg: 7.8 pCi/L

Radon Testing & Mitigation in Columbus, Ohio

Ohio ranks 4th in the nation for average radon levels, and the Columbus metro area is no exception. The region's glacial till and shale bedrock create a steady supply of radon gas that seeps into homes through foundation cracks, sump pits, and construction joints.

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Avg Radon Level

7.8 pCi/L

EPA action: 4.0 pCi/L

EPA Zone

Zone 1

Highest Risk

Metro Population

2.1 million

Service area

Avg Mitigation

$1,100 – $2,300

Installed cost

Avg Testing

$125 – $350

Professional test

Radon Facts for Columbus, OH

1Ohio's average radon level of 7.8 pCi/L is nearly double the EPA action level
2Franklin County and most surrounding counties are EPA Zone 1
3Ohio requires radon contractors to be licensed through the ODH
4Columbus's mix of older and newer suburbs means widespread radon risk
5The Ohio Department of Health provides radon awareness resources and contractor directories

🏠 Columbus Housing Stock

Diverse mix from century-old homes in German Village to new construction in Dublin and Westerville — all requiring radon awareness

📋 Real Estate & Radon Disclosure

Ohio's Residential Property Disclosure Form includes radon-specific questions. Columbus-area realtors routinely recommend radon testing during home purchases.

Why Columbus Homes Need Radon Testing

With average radon levels of 7.8 pCi/L in the Columbus metro area — well above the EPA’s recommended action level of 4.0 pCi/L — professional radon testing isn’t optional, it’s essential.

Radon inspector testing a home in Columbus

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Very High Local Levels

Columbus’s average of 7.8 pCi/L means a significant percentage of homes exceed the EPA action level. The only way to know your home’s level is to test.

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Local Housing Factors

Columbus’s housing stock — diverse mix from century-old homes in german village to new construction in dublin and westerville — all requiring radon… — creates conditions where radon can enter and accumulate.

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Ohio Disclosure Laws

Ohio's Residential Property Disclosure Form includes radon-specific questions. Columbus-area realtors routinely recommend radon testing during home purchases.… Proactive testing protects both buyers and sellers.

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Family Health Risk

Radon is the #2 cause of lung cancer in the US, responsible for 21,000 deaths annually. Long-term exposure in a high-radon area like Columbus increases risk significantly.

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