Clean Air Act (CAA)

The Clean Air Act (CAA) is a U.S. federal law aimed at controlling air pollution. Established in 1963 and expanded in subsequent years, it authorizes the Environmental Protection Agency (EPA) to set and enforce air quality standards. The CAA regulates six common pollutants—like carbon monoxide and sulfur dioxide—critical to public health and the environment. It also addresses issues like vehicle emissions and industrial pollution, promoting cleaner air through state and federal cooperation. The goal is to protect public health, welfare, and the environment from harmful air pollution.