The EPA recommends taking action if your home or building is found to have a radon level higher than 4.0 pCi/L. Over time, ...

It's no secret that Iowa has a Radon problem.70% of homes in our state test for levels above federal safety standards. The ...

The EPA says no level of radon is safe and advises that mitigation efforts be taken when radon concentration reaches 148 becquerels per cubic meter; the study considered concentrations as low as ...

Radon, even at levels below EPA guideline for mitigation, is linked to childhood leukemia. ScienceDaily . Retrieved June 2, 2025 from www.sciencedaily.com / releases / 2024 / 09 / 240930212851.htm ...

The EPA recommends fixing homes with readings above four picocuries but to consider mitigation between two and four picocuries. Divver said the state doesn’t agree with using the lower threshold.

But the EPA action level has remained where it is mostly as a matter of practicality. "The EPA chose 4 pCi/L as the action level," he wrote, "because it is a level that can usually be achieved with ...

The EPA recommends taking action if your home or building is found to have a radon level higher than 4.0 pCi/L. Over time, exposure to higher levels of radon could lead to lung cancer.

A study of more than 700 counties across multiple U.S. states found a link between childhood leukemia and levels of decaying radon gas, including those lower than the federal guideline for mitigation.