EPA Zone 1 (Highest Risk)☢️ Avg: 7.0+ pCi/L

Radon Testing & Mitigation in Cincinnati, Ohio

The Cincinnati tri-state metro area spanning Ohio, Kentucky, and Indiana faces significant radon challenges. The Ohio River Valley's limestone and shale geology is a prolific radon source, and the region's older housing stock with deep basements provides easy entry points for radon gas.

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Avg Radon Level

7.0+ pCi/L

EPA action: 4.0 pCi/L

EPA Zone

Zone 1

Highest Risk

Metro Population

2.2 million

Service area

Avg Mitigation

$1,100 – $2,200

Installed cost

Avg Testing

$125 – $350

Professional test

Radon Facts for Cincinnati, OH

1Hamilton County (Cincinnati) is EPA Zone 1 — highest risk
2The tri-state nature of the metro means three different states' regulations apply
3Cincinnati's hilly terrain and limestone bedrock produce above-average radon levels
4Northern Kentucky suburbs (Boone, Kenton, Campbell counties) also test high
5Ohio's radon contractor licensing ensures qualified professionals

🏠 Cincinnati Housing Stock

Historic neighborhoods with century homes plus suburban development in Mason, West Chester, and Northern Kentucky — deep basements are the norm

📋 Real Estate & Radon Disclosure

Ohio and Kentucky both require radon disclosure in home sales. Cincinnati's active real estate market across state lines means double the opportunity.

Why Cincinnati Homes Need Radon Testing

With average radon levels of 7.0+ pCi/L in the Cincinnati 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 Cincinnati

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Very High Local Levels

Cincinnati’s average of 7.0+ 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

Cincinnati’s housing stock — historic neighborhoods with century homes plus suburban development in mason, west chester, and northern kentucky — deep… — creates conditions where radon can enter and accumulate.

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Ohio Disclosure Laws

Ohio and Kentucky both require radon disclosure in home sales. Cincinnati's active real estate market across state lines means double the opportunity.… 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 Cincinnati increases risk significantly.

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