The Trade Waste Code is a key document of the Trade Waste Management System. It establishes the criteria under which approval will be granted to allow a trade waste customer to discharge trade waste to Power and Water’s sewerage system under Section 82(2) of the Water Supply and Sewerage Services Act.

We are currently seeking feedback on the proposed Trade Waste Code 2022 Material Amendments.

See the proposed full copy of the Draft Trade Waste Code which includes the below amendments.

If you have any concerns or feedback about the proposed changes complete this online form.

Trade waste code feedback form

The consultation period will end on Wednesday 31 August 2022.

Power and Water will publish the revised code online if there are no objections to the planned modifications.

Trade Waste Code 2017 versus 2022

Summary of material ammendments

Amendment No.Section Removal from 2017 version of Trade Waste Code Summary of the addition/update to the 2022 revision of Trade Waste Code Explanation for amendments
1 Contents   1.  Customer Category now includes Deemed Customers

2. Reworded Non-compliance "Events"

3. Non-compliance for failure to install or maintain equipment

Inclusion of a deemed customer for minimal discharge.

Provided more clarity and distinguished the difference between noncompliant discharge events compared to being a non-compliant customer.

2 Introduction Trade Waste Customer
Management diagram
  Removed the diagram as it is no longer suitable and updated the document formatting as per Power and Water’s new branding.
3 Scope Form and content of standard

1. Customer agreement categories

2. Non-compliance

To simplify what the scope of the Code is and to include non-compliance.
4 Prohibited
perfluoroalkyl and polyfluoroalkyl substances
Power and Water do not accept PFAS or PFOS contaminated waste to sewer.
5   Contaminate columns

1. Compliance

2. Risk Ranking

3. Customer Category

4. Deemed Customer

5. Reclassification of non-compliant Category A
and B customers

Customer Category is not based on the type of discharge therefore removed the levels of SS, BOD, TN and TDS. Customer Category is determined based on volume, risk rank and compliance.

Customers with minimal volume where no pre-treatment is required will now be categorised as a deemed customer. Implementing this category aligns with other Water Utilities.

The ability to temporarily reclassify non-compliant Category A and B customers to Category C providing the mechanism to apply fees and charges who fail to meet their approval obligations until compliance is met.

6 Pre-treatment

1. Addition to business types:
Day care, catering, food trucks, commercial
swimming pools

2. Addition to pre-treatment equipment
Prohibited pre-treatment equipment fruit and vegetable peelers, macerators, food waste disposal units, under sink grease guardians where there is no downstream treatment

Condensed the list of Business Types and inserted more relevant business types that the customer would recognise and relate more too.

Prohibited pre-treatment equipment that has constantly caused issues within Power and Water sewerage network causing blockages is now identified as prohibited in the Code to align with other utilities and assist with reducing potential sewer blockages.

7 Risk rank


Textile finishing

Wool Carbonising

History based on sampling



Defence Establishments

History updated to base on compliance

Updated business activities that were more relevant to be carried out in Northern Territory for customers to relate too.

To contribute to risk ranking weighting is whether the customer is compliant or not. The Trade Waste Management System has been updated to be able to identify whether a customer is compliant or not.

8 Non-compliance Non-compliance procedures Updated wording to Non-compliance Events
Description on reclassifying customer to a Category C failure to maintain equipment due to noncompliance

Provides clarity on a non-compliant one off event (major or minor) compared to being a non-compliant customer.

Encourages compliance with ensuring customer maintains pre-treatment equipment as per the customers discharge agreement requirements.

9 Appendix B-
Trade Waste
  Updated discharge factors to align with other
Discharge factors have been updated nationally therefore have aligned with other utilities.