US EPA Adds Nine More PFAS to Toxics Release Inventory

On January 3, 2025, the U.S. Environmental Protection Agency (EPA) expanded the Toxics Release Inventory (TRI) by adding nine per- and polyfluoroalkyl substances (PFAS). The nine PFAS were added to the TRI list as part of the Fiscal Year 2020 National Defense Authorization Act (NDAA), which mandates annual updates based on specified EPA activities. For the 2025 reporting year, facilities are required to track and submit reports on their use, release, or waste management of these PFAS by July 1, 2026, bringing the total number of PFAS subject to TRI reporting to 205. 

TRI data helps communities, organizations, and agencies track local chemical management, supporting transparency, accountability, and informed decision-making for families, workers, and communities nationwide. 

New additions 

The 2020 NDAA provision automatically adds PFAS to the TRI list after the agency finalizes their toxicity values.  

The nine PFAS which were added for 2025 after EPA finalized toxicity values in 2024, with identities not marked as confidential are: 

• Ammonium perfluorodecanoate (PFDA NH4) (CAS no. 3108-42-7) 

• Sodium perfluorodecanoate (PFDA-Na) (CAS no. 3830-45-3) 

• Perfluoro-3-methoxypropanoic acid (CAS no. 377-73-1) 

• 6:2 Fluorotelomer sulfonate acid (CAS no. 27619-97-2) 

• 6:2 Fluorotelomer sulfonate anion (CAS no. 425670-75-3) 

• 6:2 Fluorotelomer sulfonate potassium salt (CAS no. 59587-38-1) 

• 6:2 Fluorotelomer sulfonate ammonium salt (CAS no. 59587-39-2) 

• 6:2 Fluorotelomer sulfonate sodium salt (CAS no. 27619-94-9) 

• Acetic acid, [(γ-ω-perfluoro-C8-10-alkyl)thio] derivatives., Bu esters (CAS no. 3030471-22-5) 

Review of confidential business information 

Under NDAA Section 7321(e), EPA must review Confidential Business Information (CBI) claims before adding a PFAS to the TRI list if its identity is protected under 5 U.S.C. 552(a). Starting January 1, 2025, facilities must track activities involving these PFAS, with reports due by July 1, 2026. All PFAS on the TRI list, now 205 in total, are classified as chemicals of special concern, removing small concentration reporting exemptions.