Cross References:BS 5449BS 5955-8BS EN 12828BS EN 12831BS EN 14336BS EN 14743BS EN 14868 Water Supply (Water Fittings) Regulations 1999Health and Safety at Work, etc. ActControl of Substances Hazardous to Health Regulations 2002Building Regulations 2000.Building Regulations 2000. Approved Document L1Building (Scotland) Regulations 2004Building Regulations (Northern Ireland) 2000Trade Effluent (Proscribed Processes and Substances) Regulations 1989Hazardous Waste (England and Wales) Regulations 2005Special Waste (Scotland) Regulations 1996Hazardous Waste (Wales) Regulations 2005Hazardous Waste Regulations (Northern Ireland) 2005Scottish Water. Water Byelaws 2004