Trade and liquid hauled waste

Trade and liquid hauled waste

Trade waste

Trade waste is any used water and substances from commercial, industrial, business trade or manufacturing activities that are discharged to our sewerage system for removal and treatment. We accept trade waste into our sewers wherever possible, but to discharge trade waste, you must have authorisation and comply with the authorisation conditions.

Learn more about trade waste:

Liquid hauled waste

Liquid hauled waste is used water from industrial, commercial or domestic customers who are not connected to the sewerage network. It may also include some wastes not deemed appropriate for discharge to the sewerage network. This used water is delivered to one of our septic waste disposal stations by an approved liquid waste hauler.

It includes:

  • septic tank sludge
  • septic tank effluent
  • portable toilet contents
  • non-domestic sewage

One-off trade waste disposals also come under this category.

Learn more about liquid hauled waste:

Important documents

Trade waste discharge authorisation is required under Section 56 of the Water Industry Act 2012.

Our Restricted Wastewater Acceptance Framework tells you more about how we manage trade waste. It also includes information about authorisation compliance.

Information about contaminant concentrations is in the Restricted Wastewater Acceptance Standards. The standards also contain detail about other water characteristics we accept in our sewerage system.


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  • Gouger St
  • Adelaide
  • 18/11/2018
  • Water Supply On
  • 18/11/2018 04:36 PM - We are attending to an incident in Adelaide with no interruption to the water supply. The safety of our crews and customers comes first, and we always aim to minimise inconvenience by restoring services as quickly as we can. Reference Number WO: 06654774.
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  • William St
  • Springton
  • 18/11/2018
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  • Estimated start time and water supply off: 22/11/2018 09:00 AM
    Estimated restore time and water supply back on: 22/11/2018 03:00 PM

    We’re improving your services and undertaking maintenance work in Springton. Sometimes our crews need to temporarily interrupt the water supply to our customers and/or manage traffic while they are working. Temporary traffic management may remain in place until reinstatement of the impacted road is complete. We always aim to minimise inconvenience by restoring services as safely and quickly as we can.


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