EPA final rule implements statutory addition of PFHxS-Na to TRI as a chemical of special concern (100 lb threshold)

EPA issued a final rule updating the TRI list to add sodium perfluorohexanesulfonate (PFHxS‑Na) as a PFAS subject to EPCRA §313 toxic chemical release reporting and designated it a chemical of special concern. TRI-covered facilities that manufacture, process, or otherwise use PFHxS‑Na must begin tracking releases and waste management starting January 1, 2026 (Reporting Year 2026), and submit the first TRI reports by July 1, 2027. The reporting threshold is 100 lbs, increasing compliance tracking and reporting obligations for affected facilities.