All healthcare facilities--including very small quantity generators operating under 40 Code of Federal Regulations (CFR) §262.14 as adopted under §335.53 of this title (relating to General Standards Applicable to Generators of Hazardous Waste) in lieu of this subchapter--and reverse distributors are prohibited from discharging hazardous waste pharmaceuticals to a sewer system that passes through to a publicly-owned treatment works. Healthcare facilities and reverse distributors remain subject to the prohibitions in 40 CFR §403.5(b)(1).