EPA final rule adds sodium perfluorohexanesulfonate (PFHxS‑Na) to TRI reporting (chemical of special concern; 100 lb threshold)

EPA finalized action expanding TRI (EPCRA §313) PFAS reporting by adding sodium perfluorohexanesulfonate (PFHxS‑Na) as a TRI-listed chemical. PFHxS‑Na is identified as a TRI “chemical of special concern” with a stated 100 lb reporting threshold. Covered facilities must begin tracking releases and other reportable waste-management quantities beginning January 1, 2026 (Reporting Year 2026), with first TRI reports due July 1, 2027. Compliance teams should confirm applicability (NAICS, employee/threshold criteria) and update TRI chemical lists, calculation methods, supplier communications, and data-collection systems to capture PFHxS‑Na quantities across releases, transfers, and waste management.