Following the successful editions in 2022, 2023 and 2024, the section on EnvironChemtox (MCT), in collaboration with the University of Amsterdam, VU, WUR and the University of Antwerp, will organize a fourth PFAS symposium, this time in Amsterdam on Thursday 25 September 2025. Everyone interested in the environmental occurrence, fate and exposure, bioaccumulation, and the possible eco(toxico)logical risks of PFAS is welcome to attend!