Per- and polyfluoroalkyl substances (PFAS), also known as “forever chemicals,” have been a growing concern for drinking water utilities due to recent regulations and the persistence of these compounds in the environment. Proven PFAS removal technologies such as granular activated carbon (GAC), ion exchange (IX), and high pressure membranes are the first step in removing these compounds from the environment. However, each of these technologies create a challenging PFAS-laden waste – either solid or liquid – that needs to be processed to prevent the removed PFAS compounds from making their way back into the environment. Once the media’s PFAS adsorptive capacity is reached, GAC has a unique “end of life” option called thermal reactivation, which has been practiced for decades. GAC reactivation can provide a closed-loop option for the removal of PFAS compounds from the environment while restoring the media to a virgin-like state for reuse. This presentation will focus on two published, peer-reviewed case studies investigating the fate of PFAS through the reactivation process at full-scale reactivation facilities that process PFAS-laden spent GAC. Under typical full-scale operating conditions, the reactivation process achieved a PFAS destruction and removal efficiency (DRE) of over 99.9% on spent GAC from a municipal application and over 99.99% on spent GAC from an industrial application, as quantified using EPA’s OTM-45 methodology. The reactivation process not only removed the measured PFAS compounds from the spent GAC below detectable levels but also demonstrated no detectable products of incomplete combustion or destruction (PICs/PIDs) or reformed PFAS at the stack outlet per EPA’s OTM-50 and Methods 0010/8270. The conclusions from the two studies further support the viability of custom municipal reactivated GAC media as a cost-effective option for utilities across the country concerned about PFAS-laden waste.