Around 10% 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. By comparison, residential and other commercial sources make up 90 per cent of our wastewater volume.
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. To apply for a new trade waste connection, you can download the application form and submit it at the Council office or email it to tradewaste@colabsolutions.govt.nz.
