EPA Adds PFAS to TRI List for 2026 Reporting

On October 7, 2025, EPA announced the addition of a new PFAS to the Toxics Release Inventory (TRI): PFHxS-Na (CASRN 82382-12-5).  PFHxS-Na is a salt associated with the PFAS PFHxS (CASRN 335-46-4).

The addition takes effect January 1, 2026.  EPA will likely publish the formal amendment to the list of TRI-reportable chemicals in the Federal Register shortly.

Why Was This PFAS Added?

PFHxS-Na was automatically added to the TRI list after EPA finalized a toxicity value for PFHxS and its salts in a 2025 Integrated Risk Information System (IRIS) report.  Under the FY 2020 National Defense Authorization Act (NDAA), PFAS must be added to the TRI list when certain criteria—such as a finalized toxicity value—are met.

According to the announcement, the other PFAS identified in that IRIS assessment are already on the TRI list.

Implications for Reporting Entities

Supplier notifications for PFHxS-Na will be first required as of January 1, 2026, and reporting companies will be required to include PFHxS-Na in their Reporting Year 2026 reports, according to an EPA webpage.

With this update, EPA says that a total of 206 PFAS are now subject to TRI reporting.  The agency previously added nine PFAS to the TRI list in January 2025 for Reporting Year 2025 reports, which are due July 1, 2026.

In addition, EPA has proposed a rule to add 16 individual PFAS and 15 PFAS categories to the TRI list, while also formalizing the criteria for automatic PFAS additions.  The Trump administration’s Spring 2025 Unified Agenda indicates that EPA will finalize the rule in February 2026.

More on that rulemaking and EPA’s other TRI PFAS actions can be found in our TRI archive.