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Information about the work of  Orange City Council, located in the Central West of NSW

Liquid Trade Waste

Sewerage systemOrange City Council has a number of statutory responsibilities for the approval of liquid trade waste discharged to the sewerage system under the Local Government Act 1993. Council obligations include risk management, cost recovery, approvals, monitoring and ensuring licence conditions of the Sewerage Treatment Plant are met. Council has developed a  Policy for the Discharge of Liquid Trade Waste to the Sewerage System [1368KB] which outlines requirements and procedures for the management of Liquid trade waste.


Council's management of liquid trade waste is overseen by the NSW Office of Water (NOW, formerly  Dept. of Water and Energy – DWE) in accordance with the  Liquid Trade Waste Management Guidelines 2009 [2.04MB]  and  Best Practice Management of Water Supply and Sewerage Guidelines May 2007 [1.72MB] .

What is liquid trade waste?

Liquid trade waste means all liquid waste other than sewage of a domestic nature. Activities producing liquid trade waste include, but are not limited to:

  •   business/commercial premises (eg beautician, hairdresser, motel, café, butcher, service station, dentist);
  •   industrial premises;
  •   community/public premises (eg school, college, hospital, craft clubs);
  •   trade activities (eg mobile carpet cleaners);
  •   saleyards, racecourses, stables and kennels not associated with households; and
  •   any commercial activity carried out at a residential premises.


Sewer systems are generally designed to cater for domestic waste and liquid trade waste may exert greater demands on sewer. Management of liquid trade waste is required to:

  • Protect community assets, e.g. sewer mains, pumping stations and sewage treatment facilities from damage by trade waste;
  • Protect the environment - some substances, such as metals or pesticides may pass through the treatment facility unchanged and accumulate in the environment.  Other substances may adversely affect the biological processes and the quality of the treated effluent and biosolids;
  • Protect public and worker health and safety - people working in and around the sewerage system can be harmed if toxic substances are discharged into the sewer.

A person wishing to discharge liquid trade waste to sewer must obtain Council's approval as per section 68 of the Local Government Act 1993.  This applies to new trade waste dischargers, those whose approval has expired, or where there is a change to operations.

Applying for Liquid Trade Waste Approval Guide has been developed to assist dischargers with the approval process.

    Guide to applying for Liquid Trade Waste Approval [240KB]

Liquid Trade Waste Classifications

Four classifications (A, B, C or S) of liquid trade waste have been established for concurrence purposes which are based on business types and volume of discharge. A classification guide is included in the 'Applying for Liquid Trade Waste Approval Guide'. Separate application forms are available for each classification and are available for download.

  Class A Application Form 2017 [252KB]
Class B Application Form 2017 [254KB]
Class C Application Form 2017 [394KB]
Form C2 - Food Preparation [410KB] PDF Icon Class S Application Form [299KB]
  Form C3 - Mechanical Workshops [196KB]    
  Form C4 - Laboratory [185KB]    
Form C5 - Animal Wash [189KB]    

Liquid Trade Waste Charging

Council provides sewerage and liquid trade waste services on a commercial basis, with cost recovery through sewerage and liquid trade waste fees and charges.  For trade waste charging purposes liquid trade waste dischargers are divided into three charging categories:

Category 1 dischargers requiring nil or minimal pre-treatment;
Category 2 dischargers requiring prescribed pre-treatment; and
Category 3 large dischargers (over 20kL/day) and industrial waste

 The fees and charges that apply to each category are detailed in the Orange City Council Management Plan.

Further Information

For further information or assistance please contact Orange City Council's Trade Waste Officer on 1300 650 511.