Liquid Trade Waste means any liquid, and any substances contained in it, which is produced by an industrial or commercial activity.
Due to its concentration levels, liquid trade waste may require pre-treatment prior to being discharged into the sewerage system in order to protect public health, worker safety, the environment and the city's sewerage system.
Examples of some industries that generate liquid trade waste are laundries, restaurants, butchers, food processors, metal finishers, service stations and chemical manufacturers.
Hand basins, toilets, showers and baths at the workplace are considered domestic waste and do not require special approval or treatment.