Comment submitted by U.S. Chamber of Commerce et al.

Summary: A coalition of trade associations and industry groups argues that the draft Drinking Water Contaminant Candidate List 6 (CCL 6) is overly broad and lacks sufficient scientific data, specifically regarding chemical groups like PFAS, microplastics, and pharmaceuticals. They request that the EPA adopt a more disciplined, risk-based approach with clear definitions and validated analytical methods before proceeding with these listings.