The two presentations highlighted complementary approaches to managing PFAS contamination in groundwater through improved treatment technologies. The first evaluated surface-modified clay adsorbents (FLUORO-SORB®) against granular activated carbon (GAC) and ion exchange (IX) resins, including hybrid treatment configurations, to improve PFAS removal efficiency, media longevity, and cost-effectiveness in complex water matrices. The second assessed the use of colloidal activated carbon barriers installed in PFAS-impacted aquifers to prevent contaminant migration. Field results demonstrated significant reductions in PFAS concentrations and mass flux while maintaining groundwater flow. Collectively, these studies demonstrate advances in both aboveground water treatment and in situ remediation technologies, providing valuable information on media selection, treatment performance, long-term effectiveness, and practical implementation challenges. The findings support DoW efforts to improve PFAS treatment capabilities and reduce the migration and environmental impacts of PFAS contamination.