What is radon and where does it come from?


Radon is a natural form of radiation that can cause serious health problems and is often found in igneous rock and soil. An odorless, colorless radioactive gas; it forms from the radioactive decay of small amounts of uranium naturally present in rocks and soils.

Radon is estimated to be second only to tobacco smoking as the leading cause of lung cancer, responsible for over 20,000 estimated lung cancer deaths each year. Breathing air with a concentrated level of radon gas can result in an increased risk of developing lung cancer. Radon is second only to tobacco smoking as the leading cause of lung cancer. Radon is the primary cause of lung cancer among non-smokers in the United States, causing up to 14% of all lung cancers.

Two-thirds of our average annual dose from natural sources of radiation comes from radon, but we can take steps to reduce harmful levels of exposure. Radon can be found in workplaces, homes, and schools. Exposure from radon can occur through breathing outdoor air, in buildings and homes, and by eating or drinking.

EPA interactive radon zone map

Much of central Ohio is in Zone 1, which has the highest predicted indoor radon levels, over 4 pCi/L. The EPA action level for USA is 4 pCi/L. Many counties in Ohio have indoor radon concentrations that average much higher than the EPA action level, based on data from the Ohio Department of Health.

Any home can have a radon problem. You cannot predict radon levels inside a house based on state, local, or neighborhood radon measurements. Testing is the only way to know if you or your family are at risk from radon.

The EPA recommends that every home be tested for radon. Changes to your home such as additions, remodeling, or even a new roof or siding can change the level of radon inside your home.

Woman drinking coffee and looking at computer

Woman drinking coffee and looking at computer


Any home can have high radon, the only way to know is to test.

Include a radon test with your home inspection for any house you consider buying.

Schedule a Radon Test Now for $150 What is Radon Gas?

Radon Information

Uranium emitting alpha particles in a cloud chamber

What is radon gas?

Radon is an odorless, colorless, tasteless, radioactive gas. Radon comes from the decay of radioactive uranium that can be found in small amounts in rocks and soil throughout nature. In areas with disturbed earth, and loose fill, like when a home is built, radon escapes from the soil.

Radon gas exposure is the number one cause of cancer for non-smokers, even greater than second-hand smoke. Most people are exposed to radon gas inside their own homes, and this is their greatest exposure to natural ionizing radiation.

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Face masks and hand sanitizor for radon testing employees

COVID-19 safety for our company and your family

Buckeye Radon is committed to the safety of your family and our own employees. During this pandemic, it is critical that we all observe safety protocols that minimize the risk of disease transmission.

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Family in the kitchen

Radon gas in Ohio

Central Ohio has relatively high natural concentrations of uranium from glacial deposits and shale, which during radioactive decay, produces radium and radon.

The EPA’s current radon action level is four picocuries of radon per liter of air (4 pCi/L). Most counties in central Ohio have high potential for radon, with predicted average indoor greater than the EPA action level. According to one study cited by Ohio Department of Natural Resources Department of Geological Survey, 38% of Ohio’s 88 counties had average indoor radon levels above 4.0 pCi/L, but Licking County’s average was above 8.0 pCi/L. Seven Ohio counties—Carroll, Fairfield, Franklin, Harrison, Knox, Pickaway, and Ross—had average indoor Radon concentrations between 6 and 8 pCi/L.

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Home with radon gas

How does radon get into my home?

Radon is odorless, colorless, and tasteless; it is an inert noble gas. Radon is a naturally-occurring, carcinogenic, radioactive gas produced by the decay of radium in the soil. Radon gas exposure is the greatest single source of natural, ionizing, background radiation, only surpassed by medical radiation.

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