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Reclaimed water is treated wastewater available for reuse from our wastewater treatment plants. It's an important resource for GWMWater and the region. It has many benefits, such as:

  • helping to maintain community resources such as sports ovals, race courses and golf courses
  • encouraging regional growth by supporting community recreational spaces and local industry, such as vineyards
  • reducing the need for drinking water or raw water in irrigation
  • providing potable water substitution options
  • reducing environmental impacts from traditional river discharges

Ten of our 28 wastewater treatment plants are currently supplying reclaimed water across the region to participating customers.


Reclaimed water treatment

Our reclaimed water is treated to a Class C level according to EPA Victoria's guidelines. Under the guidelines, this water is used for:

  • urban areas that have restricted public access during irrigation
  • agricultural uses for vineyards
  • agricultural uses for grazing or as fodder for livestock
  • industrial uses for systems with no potential worker exposure

Reclaimed water is often stored in the winter and then used during the dry summer and autumn months when other water sources are scarce.


Reclaimed water releases 

We are currently discharging Class C recycled (reclaimed) water that meets with EPA requirements for use of reclaimed water from:

  • Ararat Wastewater Treatment Plant to the Hopkins River during August and October 2017.
  • Willaura Wastewater Treatment Plant to Cockajemmy Lake during September and October 2017.

Recent rainfall has led to a significant rise in recycled water held in storage at the wastewater treatment plant/s and wet weather discharges will occur. 

The discharge is not expected to create any adverse environmental impacts. A water quality monitoring program and a management plan have been developed and results are detailed in the documents below: 

Adobe PDF file icon 24x24 Ararat Wet Weather Release Report - 3 October 2017 (138kb, 2 pages)

Adobe PDF file icon 24x24 Willaura Wet Weather Release Report - 3 October 2017 (138kb, 2 pages)


Wet weather releases from the Horsham, Halls Gap St Arnaud and Stawell Wastewater Treatment Plants have ceased.


September 2017 reclaimed water reports

Adobe PDF file icon 24x24Ararat Adobe PDF file icon 24x24Edenhope
Adobe PDF file icon 24x24Halls Gap Adobe PDF file icon 24x24Horsham
Adobe PDF file icon 24x24Murtoa Adobe PDF file icon 24x24Nhill
Adobe PDF file icon 24x24St Arnaud Adobe PDF file icon 24x24Stawell
Adobe PDF file icon 24x24Warracknabeal Adobe PDF file icon 24x24Willaura


View reclaimed water management trigger points for REclaimed Water Stroage targets Halls Gap and Stawell September 2017

View 2016/17 reclaimed water reports

View 2015/16 reclaimed water reports


Interested in reclaimed water for your property?

GWMWater currently services a number of towns in the region with reclaimed water, but there are limitations to our supply capabilities. If you're interested in reclaimed water for your business or organisation, contact us to find out more.


Further information...

Adobe PDF file icon 24x24 National Guidelines For Water Recycling (937kB, 174 pages)

Published by: Environment Protection and Heritage Council

Date: May 2008





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