Which method is commonly used to measure radon levels in a residential setting?

The use of radon test kits is the standard method for measuring radon levels in residential settings. These kits are specifically designed to detect and quantify the concentration of radon gas in the indoor air over a defined period. They come in two main types: short-term and long-term test kits. Short-term kits typically measure radon levels for a few days to a week, while long-term kits evaluate levels over several months, providing a more accurate representation of average radon exposure in a home.

Radon test kits are accessible and user-friendly, allowing homeowners to easily monitor radon levels. When deployed properly, they can give reliable results that inform actionable decisions about remediation if radon levels exceed the EPA’s action level of 4 picocuries per liter.

The other options listed, while they relate to air quality or safety, do not specifically measure radon levels. Smoke detectors are designed to detect smoke from fires, air quality monitors may measure a range of pollutants but are not focused on radon, and water testing kits evaluate contaminants in water rather than airborne radon levels. Therefore, radon test kits are indeed the appropriate choice for measuring radon in the home environment.