Regulations for per- and polyfluoroalkyl substances (PFAS) continue to evolve, and new rules may affect metalworking operations. The EPA is exploring revisions to the Metal Finishing Effluent Guidelines (40 CFR Part 433) under the Clean Water Act.
As these regulations continue to shift amid ongoing litigation, manufacturers should understand a few guidelines and why waiting for final rulings could pose some operational risks.
The Current Stance
The most current regulations cover wastewater discharges from many industries, including:
Baseline discharge standards remain for now, but the EPA is closely monitoring chrome finishing operations, including plating, anodizing, etching and chromate coatings.
This is particularly important for facilities that have used, or continue to use, fume suppressants to control vapor emissions, as these suppressants are confirmed to introduce PFAS into industrial wastewater.
Potential PFAS Updates
For metalworking operations, the EPA is considering updating discharge limits to isolate PFAS in metal finishing effluent.
Official federal proposals are still being reviewed, but many Publicly Owned Treatment Works (POTWs) are implementing localized pretreatment restrictions, new mandates and surcharges on operations discharging to sewer.
What Can Metalworking Facilities Do Right Now?
Waiting for final rulings and regulatory updates can create production and compliance bottlenecks if operations aren’t prepared. Facilities can take a couple of steps now to keep processes and timelines on track for if and when new regulations take effect.
Connect with the experts at prab.com to learn how we customize fluid recycling and water recycling and reuse systems for your operation, fluid chemistry and production goals, helping you maintain compliance, save costs and continually optimize your process.
