There are processes and technologies in place to treat other contaminants. However, the efficacy of the existing technologies to treat PFAS remains largely unknown. Further, whether existing processes will lead to reduced or increased concentration in the treated water remains unknown largely due to the presence of metastable PFAS precursors. Utilities need to understand the fate, transport and transformation of these precursors to achieve compliance. Our approach is to partner with utilities to perform a whole system survey and identify critical technology gaps by analyzing existing processes, historical data and water source information, and help make well informed decisions. GHD’s Innovative Technology Laboratory is fully equipped with analytical capabilities to conduct treatability studies and determine promising and cost-effective treatment solutions. Our laboratory has been effectively utilized on several PFAS projects completed by our team.