This SERDP and ESTCP webinar presents novel technologies to remove per- and polyfluoroalkyl substances (PFAS) from groundwater and to develop high-performing PFAS-free fire-fighting foams. Specifically, investigators will discuss the development and optimization of cyclodextrin-based adsorbents to remove PFAS from groundwater, and the optimization of compressed air foam (CAF) and ultra-high pressure (UHF) foam delivery systems to improve the quality of commercial, off-the-shelf PFAS-free foams that meet stringent military specifications.