Regulation 1 Citation and commencementI1 England and Wales These Regulations may be cited as the Trade Effluents (Prescribed Processes and Substances) Regulations 1992 and shall come into force on 20th March 1992. Annotations Commencement I1 Reg. 1 in force at 20.3.1992, see reg. 1 ← Introduction Regulation 1 Regulation 2 →