The environmental departments of North Carolina, New Jersey, and New Mexico have petitioned the EPA to classify four PFAS chemicals as hazardous air pollutants under the Clean Air Act, citing serious public health concerns due to unregulated emissions. The requested substances include PFOA, PFOS, PFNA, and HFPO-DA, all of which are persistent in the environment and pose risks to air quality. The states argue that the addition of these chemicals to the hazardous list would help close a regulatory gap and mitigate airborne PFAS emissions, which have been linked to groundwater contamination. The EPA has previously acted on PFAS in drinking water, but the air pollution aspect remains largely unaddressed. North Carolina's DEQ highlighted the urgent need for regulation, especially given the historical emissions from facilities like Chemours. This collaborative effort reflects a growing recognition of the health risks posed by PFAS across multiple environmental media.