Trade Waste
Around 10 per cent of wastewater volume comes from trade waste, which is the liquid and material discharged by business. This includes solids, fat, oil, grease, solvents, emulsions and chemicals that come from industrial or trade processes.
We have a small number of trade waste customers which are controlled through a permit system. This is because trade waste can contain substances that are detrimental to the wastewater system, treatment plant process and the environment.
By comparison, residential and other commercial sources make up 90 per cent of our wastewater volume.
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