Preparing for UCMR 6: Understanding Occurrence of Trifluoroacetic Acid and Emerging Ultrashort-Chain PFAS (Request for Proposals)

Description: Project Objectives: Characterize the occurrence of trifluoroacetic acid (TFA) and other ultrashort-chain organofluorine compounds included in the Sixth Unregulated Contaminant Monitoring Rule (UCMR 6) in representative U.S. drinking water systems. Evaluate changes across existing full-scale treatment processes using source and finished water samples to identify treatment trains that demonstrate measurable removal or reduction of these compounds. Develop a response and communication protocol to support utilities when communicating the results of the sampling and potential detection of TFA and other UCMR 6 ultrashort-chain organofluorine compounds.