There are several CWA authorities that can be used to address PFAS in surface water, including authroizing EPA and states to limit or prohibit discharges of PFAS in the National Pollutant Discharge Elimination System (NPDES) permits they issue, or requiring EPA to establish technolgy-based Effluent Limitation Guidelines for industrial dischargers.
Webpage
ECOS/ERIS PFAS Risk Communications Hub
ECOS and ASTHO in 2018 developed a clearinhouse of PFAS risk communication resources and FAQs on how to communicate to four key audiences (the public, media, legislatures, and clinicians) about PFAS.