Washington DC Radon Information
Washington DC Radon Program:Radon Website: Website
Radon Contact: Keith Keemer
Active Radon Program: Yes
Require License for Radon Professionals: No
Washington DC Radon Levels
EPA Radon Levels
Washington DC has counties and (0%) 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. Washington DC's state radon zone average is , which is the average of all county zone ratings the EPA has assigned the state, ranking it among all states.
The radon levels in DC 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.
Washington DC 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 Washington DC
Washington DC, formerly known as the District of Columbia, is the capital of the United States. As per the US Constitution, the District is under jurisdiction of the US Congress and as such it is not considered a part of any state. It is the 24th most populous area in the country with a population that totaled 646,449 in 2013. It is also the 7th largest metropolitan area in the entire country.
DC 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.