Radon is a very common problem for schools, childcare facilities, and other similarly large buildings. According to the EPA, 1 in 5 schools in the US has at least one classroom with elevated levels of radon beyond the action level of 4 pCi/L. This means that approximately 70,000 classrooms across the country.
While radon is dangerous to everyone, children are even more susceptible to its effects due to their smaller size and still-developing lungs. However, due to the size, design, and complicated nature of their ventilation systems, schools are often some of the most difficult to treat for radon and require multiple phases to get accurate testing results.