Ohio Radon Information
Ohio Radon Program:
Radon Website: WebsiteRadon Contact:
Active Radon Program: Yes
Require License for Radon Professionals: Yes
Ohio Radon Levels
Ohio has a user submitted radon level of 8.46. This is based on data submitted from visitors on our site. Learn more here.
EPA Radon Levels
Ohio has 88 counties and 53 (60%) have been assigned Zone 1 counties by the EPA. Zone 1 counties have the highest potential to have homes test higher than 4 pCi/L. Ohio's state radon zone average is 1.4, which is the average of all county zone ratings the EPA has assigned the state, ranking it 14 among all states.
The radon levels in Ohio are above average in many areas of the state. There’s an increased risk for all homeowners, which is why we recommend testing exposure levels at least twice a year.
Ohio Radon Mitigation and Testing
Need your home tested for radon? Already know you have high levels and need a radon reduction system installed? Finding qualified Radon professionals can be difficult, but we've put together a list of Ohio contractors to help you save time.
Ohio Radon Mitigation
We have compiled a list of qualified radon mitigation contractors.
Find Radon Mitigation Contractors here
Ohio Radon Testing
Need your home or office tested for Radon? We have compiled a list of qualified radon testing contractors.
Find Radon Testing Contractors here
Ohio Radon Contractor License Information
Does Ohio require contractors to be licensed? Yes.
What are the licensing requirements? The requirements are as follows:
1. Attend and complete an approved course.
2. Take and pass the national certification examination offered through the National Radon Safety Board (NRSB) or National Radon Proficiency Program (NRPP).
3. Register with the state radon program.
Those looking for a radon certification can take qualified third party courses offered by the NRPP or AASRT. The state will then endorse said professionals and add them to the official directory.
Ohio Radon Real Estate Requirements
Does the state of Ohio require radon testing for all real estate transactions? No
However both the state of Ohio and the EPA recommend that a home or residence should be tested before a real estate transaction is carried out. Even though Ohio does not require radon testing, we certainly recommend you have a test performed before you purchase a home. If you decide to perform a test after and find elevated levels, there is no reason to panic. Ohio radon mitigation is not expensive compared to the dangers and a system can be implemented in a relatively short period of time.
Ohio Radon Map
Zone 1 (1): Potential for radon levels above 4 pCi/L according to EPA
Zone 2 (2): Potential for radon levels between 2 pCi/L and 4 pCi/L according to the EPA
Zone 3 (3): Lowest EPA level with expected radon levels at or below 2 pCi/L
Disclaimer: It is strongly recommended that all households, schools and office spaces test radon levels individually. The EPA Radon Zone data is not an indicator of individual test results, but a guideline for strategic planning. Toxic radon levels can be found in all counties, regardless of their zone rating. While we make efforts to keep this information up to date, it is derived from thirdparty sources which may not be accurate or reflect the most current statistics.
About Ohio
Ohio is the 34th most expansive state in terms of size and the 7th most populous. It also happens to be the 10th most densely populated state in the entire US.
Ohio does have an active radon program, dedicated to educating citizens about the risks associated with the deadly gas. You can find more information on Radon, testing and mitigation at the official page.