In schools, which area should be specifically tested for radon levels?

The focus on testing first-floor classrooms for radon levels is grounded in the fact that radon is a naturally occurring, colorless, odorless gas that can seep into buildings from the ground. Since radon originates from uranium decay in soil, its concentration tends to be higher in lower levels of buildings where ground contact is more prevalent.

First-floor classrooms are particularly relevant because they are often situated directly above or in close proximity to the ground, making them vulnerable to radon entry. In school settings, where children spend significant amounts of time, it is crucial to ensure that these environments are safe and free from harmful levels of radon exposure.

While other areas such as gymnasiums, cafeterias, and libraries can also harbor radon, they may not necessarily be on the first floor or as directly connected to the ground as classrooms typically are. Testing in first-floor classrooms provides a focused and practical approach to assess and mitigate potential radon risks in areas where children are regularly present and engaged in learning activities.