I thought the main source of PFAS from firefighting was from the actual chemicals used to suppress the fires, but that might be specifically a US military thing

I thought the main source of PFAS from firefighting was from the actual chemicals used to suppress the fires, but that might be specifically a US military thing: Firefighting Foam: DOD is Working to Address Challenges to Transitioning to PFAS-Free Alternatives: https://www.gao.gov/products/gao-24-107322 https://www.gao.gov/products/gao-24-107322