On June 15, 2026, the New Jersey Department of Environmental Protection (NJDEP) formally adopted regulations setting site remediation standards for perfluorononanoic acid (PFNA), perfluorooctane sulfonate (PFOS), perfluorooctanoic acid (PFOA), and hexafluoropropylene oxide dimer acid and its ammonium salt (HFPO-DA) (commonly known as GenX chemicals). In addition, NJDEP amended the Technical Requirements for Site Remediation so that remediation practitioners are now required to analyze for these four compounds and 2,3,7,8-tetrachlorodibenzo-p-dioxin when contaminants are unknown or not well documented at a contaminated site.

New Jersey is just one of many states adopting legislation related to per- and polyfluoroalkyl substances (PFAS). According to the National Conference of State Legislatures, over 300 PFAS-related bills were considered across 39 states in 2025. And PFAS legislative activity is likely to continue.

On May 18, 2026, the Environmental Protection Agency (EPA) announced a proposed rule to rescind regulations and maximum contaminant level (MCL) goals for perfluorohexane sulfonic acid (PFHxS), PFNA, hexafluoropropylene oxide dimer acid and its ammonium salt (HFPO-DA) (commonly known as GenX chemicals). Hazard index mixtures containing two or more of PFHxS, PFNA, HFPO-DA, and perfluorobutane sulfonic acid (PFBS) are also included in EPA’s proposed rule.

For other requirements and more information about the New Jersey regulation, click here. Comments on the proposed EPA rule are being accepted here until July 20, 2026.