Trade waste guidelines and fact sheets

Trade waste guidelines and fact sheets

The most current version of each document is published on this site.

Older versions of these documents are available at request by emailing or by phone (08) 7424 1336.

We don't retrospectively apply revised or newly-issued conditions within guidelines to existing pre-treatment installations that we have previously approved, providing you:

  • comply with the original discharge permit conditions
  • do not create operational problems in the sewerage system.

Business Processes

Restricted used water


Fact Sheet Update Timeline

DocumentDate of ChangeDescription of changes

Approved Basic Trade Waste Pre-treatment Products

  • The list has been updated to incorporate the latest products for GRAF Australia (passive grease arrestors, the ‘Diamant’ models)and for Halgan (Oil Water Separators, the ‘OWHS’ models).
Basic Pre-treatment Devices – Design, Installation and Accessibility1/12/2018
  • The name has changed from “Basic Pre-treatment Devices Accessibility” to “Basic Pre-treatment Devices – Design, Installation and Accessibility”.
  • Section “Other matters” -  Specific explanations were added about a trade waste disconnector gully, pumped waste to a grease arrestor and the minimum length of a drain gravitating to an arrestor. Businesses needing a pre-treatment device greater than 5000L/h require flow meter installation.
Commercial Food Preparation and Service1/12/2018
  • Under the “Specific minimum capacities for certain activities” table: the list of business types not requiring a grease arrestor installation has been expanded to include the retail coffee shops, ice cream parlours (with no production on site)and juice/bubble tea/smoothies bars. The description for this category has been also expanded to include more examples.
Changes to retail coffee shop pre-treatment requirements1/12/2018
  • New fact sheet aiming to inform about important pre-treatment requirement change: grease arrestors are no longer required for retail coffee shops with no food preparation or cooking on site.

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