The U.S. Environmental Protection Agency (EPA) proposed on January 17, 2025, to clarify the timeframe for when companies must first notify a customer that one of its mixtures or trade name products contains a per- or polyfluoroalkyl substance (PFAS) listed on the Toxics Release Inventory (TRI). 90 Fed. Reg. 5795. The National Defense Authorization Act for Fiscal Year 2020 (NDAA) adds certain PFAS automatically to the TRI beginning January 1 of the year following specific triggering events. According to EPA’s January 17, 2025, press release, EPA is proposing the rule in response to questions from industry regarding the effective date of supplier notifications for PFAS added to the TRI pursuant to the NDAA. Stakeholders questioned whether the supplier notification requirements for such PFAS begin on January 1, when the PFAS are added to the statutory TRI chemical list, or upon EPA completing a rulemaking to include the added PFAS in the Code of Federal Regulations. EPA states that the proposed rule would clarify that the supplier notification requirement for these PFAS starts immediately when they are added to the TRI (January 1) by explicitly defining PFAS added to the TRI by the NDAA as TRI chemicals. EPA notes that as TRI chemicals, they are immediately covered by the TRI regulation’s supplier notification provision, as well as all other TRI reporting requirements. Supplier notifications must begin with the first shipment of the calendar year in which the chemical addition to the TRI is effective. Comments are due February 18, 2025.