美国PFAS饮用水法规

主要条款

The rule sets enforceable maximum contaminant levels of 4 nanograms per litre for PFOA and PFOS individually, individual limits for PFHxS, PFNA and HFPO-DA (GenX), and a hazard-index limit for mixtures of those and PFBS. Public water systems must complete initial monitoring and, where exceedances occur, install treatment within the compliance timetable.

Because it is the first comprehensive national standard of its kind, the rule functions as an international reference point and a demand catalyst for treatment technologies.