PM 4/22: Chemicals in foam liquids for firefighting – a compilation of knowledge

The use of foam liquid in extinguishing fires, especially PFAS-based extinguishing foam liquids, has led to the pollution of the environment, including drinking water, by PFAS. However, it is not always easy to know what different foam liquids contain. Substances other than PFAS in PFAS-free foam liquids can also pollute the environment.