What Is AFFF or Firefighting Foam?

Aqueous Film-Forming Foam (AFFF) is a firefighting foam used to control fires by forming a thick film on fuel surfaces, cutting off oxygen and suppressing flammable vapor. It has been widely used by firefighters, military bases, and airports since the 1960s. However, health organizations, including the Environmental Protection Agency (EPA), Center for Disease Control (CDC), and American Cancer Society (ACS), have raised concerns about the use of PFAS, or per- and polyfluoroalkyl substances, which are key ingredients in AFFF.

PFAS are a group of chemicals that persist in the environment and have been linked to various cancers, based on numerous studies. Regular exposure to PFAS is common due to its presence in the air, soil, water, and processed foods. Long-term exposure to contaminated resources can lead to negative health impacts.