EPA final rule adds sodium perfluorohexanesulfonate (PFHxS‑Na) to TRI as a chemical of special concern (100 lb threshold) with reporting starting in 2026

EPA finalized a TRI expansion adding sodium perfluorohexanesulfonate (PFHxS‑Na) to EPCRA §313 (TRI). PFHxS‑Na is designated a chemical of special concern with a 100 lb reporting threshold, meaning covered facilities must begin tracking releases and other reportable activities during the 2026 reporting year (starting Jan 1, 2026). The first TRI submission covering this new listing is due July 1, 2027. Compliance teams should update chemical inventories, release tracking, and TRI applicability determinations accordingly.