afff

Firefighting foam, also known as aqueous film-forming foam (AFFF), has been a staple in the industry for over a century, used extensively by the U.S. military, airports, and local fire departments to combat fuel-based fires. These synthetic foams contain a class of man-made chemicals called per- and polyfluoroalkyl substances (PFAS), including the notorious compounds perfluorooctane sulfonate (PFOS) and perfluorooctanoic acid (PFOA).