Effluent / Trade Waste / Wastewater

Trade waste is defined by the EPA as all liquid waste generated by a commercial premises and discharged into a sewer system, other than human waste.  

Effluent is considered to be all treated waste that is to be discharged into a natural or man-made body of water.

All businesses that are looking to discharge trade waste to a sewer system must have either a permit or a trade waste agreement with their Council/EPA to allow discharge with the local water authority. Trade waste can be generated by industries such as;

  • Commercial food outlets or food and beverage manufacturers
  • Shopping centres
  • Service stations and mechanical  workshops
  • Hospitals and medical centres
  • Industry and manufacturing
  • Chemical manufacturers
  • Pesticide manufacturers 
  • Regulated waste receivers
  • Carwashes

Hydro Flow offers design and installation of trade waste systems, automated pH control, chemical supplies, servicing, maintenance, and sampling to help businesses comply with the requirements of each authority’s trade waste agreement.


Sampling is a requirement of a trade waste agreement and is undertaken to create a 24 hour composite sample which is analysed by an independent NATA accredited laboratory to ensure that waste being discharged is meeting the agreed trade waste limits.

Trade Waste Limits

The type of waste, the rate of discharge and the concentration permitted varies from state to state. Hydro Flow can help you understand these trade waste/effluent limits and design a chemical management program that can help to reduce waste, manage and decrease risk and meet target limits to achieve financial savings through the reduction of discharge fees.

Trade Waste Agreements

  • Industrial trade waste agreement is issued to all industrial trade waste customers that produce trade waste effluent that is considered of medium to high risk. 
  • Industrial trade waste consent is provided to industrial trade waste customers that are considered low risk. 
  • Commercial trade waste consent is primarily targeted to manage the risks associated with the disposal of greasy food waste into the sewer from commercial food premises such as restaurants, café's, bakeries, take away food outlets and butchers. 
  • Food waste agreement is designed specifically for customers who dispose food waste to sewer via food disposal units and potato and vegetable peelers. 
  • Tankered waste agreement allows EPA licensed waste transporters to cart and dispose of waste from septic tanks to specific sewage dumping points at specified times. 
  • Emergency trade waste agreement covers circumstances when a special one-off trade waste discharge agreement may be issued to a customer for a limited period of time.

Trade Waste Risk Classifications

The Water Authority will apply a Risk Classification based on your circumstances. By utilising the correct chemical management programs Hydro Flow works together with our clients to look at all potential possibilities to reduce the risks. Let Hydro Flow take the worry out of your trade waste water.