PFAS in the environment is gaining attention across the US due to its occurrence, toxicity, and chemistry. The fate of PFAS and its transport mechanisms are important to understand as PFAS are being detected in wastewater and biosolids. PFAS contributions to wastewater can come from several sources. Adding to the fate of PFAS is the unique chemistry of PFAS compounds. The carbon-fluorine bond found in PFAS compounds is the strongest bond in nature. These carbon-fluorine bonds do not break under normal environmental conditions, and requires advanced technology to remove or destroy PFAS in water and solids. As regulatory agencies at the state and federal levels start to investigate PFAS contamination in host of environmental matrices, it is becoming apparent of the importance to understand the sources and receivers of PFAS contamination in the environment. The USEPA continues to work from its 2021 PFAS Strategic Roadmap, and we are seeing more PFAS regulations being proposed and finalized that can affect the wastewater industry. In December 2023, the USEPA released its second annual progress report on the PFAS Strategic Roadmap. In this report, the EPA is highlighting its significant progress on PFAS since 2021. Some key regulations that are important for the wastewater industry that will be covered, include the Effluent Limitations Guidelines (ELGs), Toxics Release Inventory (TRI), Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA), Toxic Substances Control Act (TSCA), and finalizing the risk assessment for PFOA/PFOS in biosolids. Another key PFAS initiative for the wastewater industry that will be covered is the USEPA’s Guidance to States to Reduce Harmful PFAS Pollution, which focuses on PFAS discharges to POTWs and Pretreatment programs. Applicable PFAS test methods and compound lists are important considerations, and selected test methods will be covered. As Draft Method EPA 1633 moves closer to becoming a final approved method, understanding the applicability of this method is important for the wastewater industry. Field sampling for PFAS is very restrictive due to the low PFAS reporting limits for wastewater and biosolids. Proper field sampling techniques will be covered for both wastewater and biosolids sampling. Field quality control samples such as field blanks, equipment blanks, and trip blanks are important to consider when developing sampling plan. Understanding these field sampling considerations are key to limiting any potential for cross-contamination of PFAS when collecting wastewater and biosolid samples. In this presentation you will learn about: • PFAS Federal and State Regulatory update • PFAS Sources for industrial wastewater • PFAS Implications for Biosolids and Sludge • PFAS Test Methods and Compounds • PFAS Field Sampling and Resources