Water Sensitive SA

Maintenance of proprietary stormwater treatment devices

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Maintenance of proprietary stormwater treatment devices

Images of stormwater treatment devices

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PLEASE NOTE: Change of date to 20 October due to the 22 September National Day of Mourning public holiday.

Need guidance on the maintenance requirements of the major GPTs and other proprietary devices available in Australia today?

Join us to learn how your Council or organisation can achieve the best performance and value from your significant investment in environmental protection assets.

This course will take participants through the national Guidelines for the maintenance of stormwater treatment measures 2020 and provide valuable advice on maintenance of these assets:

  • planning and budgeting
  • asset information
  • cleaning specifications, tools and methods
  • stakeholder involvement
  • waste disposal
  • removal targets and product performance specifications
  • typical errors in cleaning process and how to avoid them
  • how to report and what to report, and how to use this information to optimise asset function and maintenance programs
  • auditing assets, upgrades & decommissioning
  • asset handover
  • dewatering of GPTs.

The afternoon session will include visits to a range of proprietary products for stormwater treatment focusing on best-practice cleaning techniques.

Stormwater NSW initiated the preparation of the national guidelines, which provide guidance in how to maintain your stormwater quality treatment solutions. The guideline was written to fill a significant gap that existed in the market with regard to the dozens of proprietary solutions available. A modified version of the guideline will be provided to participants focusing purely on the elements relating to proprietary products to compliment the Water Sensitive SA WSUD Inspection and maintenance guidelines that focus predominantly on vegetated WSUD assets.

The national stormwater treatment guideline includes a standard one-page cleaning specification for the model of all GPTs and proprietary products currently available in Australia. Councils can use these to define cleaning specifications for cleaning contractors to quote in a consistent manner.

Who should attend

  • Development assessment engineers
  • Cleaning contractors
  • Maintenance staff
  • Council stormwater engineers
  • Anyone else who deals with stormwater.

What’s included

  • Digital copy of the Guidelines for the maintenance of stormwater treatment measures 2020 (South Australian edition), per organisation, which can be shared throughout your organisation (each participating organisation is required to purchase a single digital guideline at a cost of $195 + GST).
  • Hard copy (B&W) of the guidelines for each participant.



  • Water Sensitive SA Partners – $250 + GST and booking fee
  • Stormwater SA members – $250 + GST and booking fee
  • Non-partners – $400 + GST and booking fee


  • Participating organisations – $195 + GST (1 ONLY required per organisation)

Trainer’s biography

Murray Powell, Optimal Stormwater

Murray Powell spent four years with the NSW EPA, before joining a proprietor, then a consultant and a Council. He opened his own company in stormwater management – Optimal Stormwater – 13 years ago. Murray has been on the Stormwater Industry Association committee almost since its inception in the early 1990s, and is a past President of Stormwater NSW.

Over the past 13 years Murray has expanded from GPTs into full stormwater harvesting systems, as they are a logical extension and almost all harvesting systems require a GPT for the primary treatment component. Murray also heads the auditing team (when required) to go underground and discover why GPTs aren’t always living up to expectations. He has made numerous presentations on stormwater treatment and maintenance of these systems, and is the key author of the new Government Guidelines for the Maintenance of Stormwater Treatment Measures 2022.


Apex Park Comunity Facility
616 Burbridge Road
West Beach,
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Registration: 8:45am

October 20 @ 9:00 am
October 20 @ 5:00 pm
Apex Park Comunity Facility
616 Burbridge Road
West Beach

Acknowledgement of Country

Water Sensitive SA acknowledges Aboriginal people as the First Peoples and Nations of the lands and waters we live and work upon, and we pay our respects to their Elders past, present and emerging. We acknowledge and respect the deep spiritual connection and the relationship that Aboriginal and Torres Strait Islander people have to Country.