Advanced Oxidation Processes (AOP) for PFAS: A Comprehensive Guide Introduction: The Challenge of PFAS Per- and polyfluoroalkyl substances (PFAS), often referred to as "forever chemicals," present significant environmental challenges, particularly in water quality management. As of July 30, 2025, the U.S. Environmental Protection Agency (EPA) has declared PFAS a critical pollutant, prompting stringent regulations aimed […]