Clean Water Standards for PFAS Act of 2025

The Clean Water Standards for PFAS Act of 2025 (HR 6668) was introduced on December 11, 2025, by Rep. Pappas (D-NH) and referred to the House Transportation and Infrastructure Committee. The bill requires EPA to publish human health water quality criteria for all measurable PFAS substances within 3 years of enactment, and to establish effluent limitations guidelines for priority industry categories discharging PFAS. As of February 2026, the bill was referred to the Subcommittee on Water Resources and Environment, where it remains in early-stage committee review. A companion bill (S3457) has been introduced in the Senate and referred to the Environment and Public Works Committee. The critical funding mechanism here is zero: the bill authorizes NO federal funds for compliance. It imposes a regulatory mandate that forces private capital expenditure by obligated parties. Water utilities ($AWK) must invest in PFAS treatment infrastructure; chemical manufacturers ($MMM, $DD, $DOW) must clean up historical and continuing discharges. The Congressional Budget Office would score this as raising costs on industry with no direct federal outlay — a classic unfunded mandate. The only structural beneficiaries are water treatment technology providers ($XYL, and unlisted pure-plays like Calgon Carbon/Kuraray) that sell the filtration and destruction equipment utilities and manufacturers must purchase. The companion bill (S3457) in the Senate increases passage probability modestly, but the bill still faces a long path: full committee markups, floor votes in both chambers, conference, and presidential signature. Early stage with a single House sponsor means this is unlikely to move before the 2028 election cycle unless PFAS contamination drives public pressure. However, the regulatory TREND is clear regardless — EPA has already proposed PFAS drinking water standards under the Safe Drinking Water Act; Clean Water Act discharge rules are a natural next step regardless of this specific bill's passage. Industry participants are already under EPA pressure via enforcement actions and consent decrees, so incremental regulatory costs are priced into $MMM at $146 and $DD at $45.33. The Presidential Determination of April 20, 2026, under the Defense Production Act for large-scale energy infrastructure is not directly relevant to PFAS regulation — it focuses on domestic energy and manufacturing. There is no conflict or amplification between the DPA determination and this bill.