Department of Ecology
June, 2023
A brief history of PFAS
Per- and polyfluoroalkyl substances are collectively known as PFAS. The group comprises thousands of unique synthetic organic chemicals that are extremely stable and persistent. Commercially manufactured since the 1940s, PFAS compounds have been used in manufacturing common consumer products, such as carpeting, clothing, furniture, outdoor equipment, and food packaging. Many industries have also used PFAS, including aerospace, automotive, aviation, electronics, and medical industries. One major source of PFAS contamination is Aqueous Film Forming Foam (AFFF), which is used for fire training and extinguishing petroleum fires and other flammable liquids.
Continue reading “Guidance for Investigating and Remediating PFAS Contamination in Washington State”