Wannon Water Region Water Corporation has applied for a works approval to upgrade their sewage treatment plant (STP) in Elliot St, Warrnambool. The upgrade to the plant is needed to increase capacity to manage demand for sewage and wastewater treatment until 2040.

A copy of the works approval application (number 1003877) and its appendices can be viewed in the 'Supporting documents' section of this page.

For more information on the works approval process see EPA works approvals (publication 1523.2).


Submissions now available to view

Submissions on this works approval application are now closed. EPA received 83 submissions from members of the public.

All submissions are now available to view in the ‘supporting documents’ section on this page. Some submissions have attachments associated with them, which are also in the 'supporting documents' section, labelled by the contribution ID of the relevant submission.

A summary of the submissions has been included.

EPA will be holding an online conference in the coming weeks to better understand community concerns and to consider options to resolve concerns. More details will be made available shortly.

Previous updates

In-lieu of a face-to-face public forum, community were invited to ask questions to EPA and the proponent from 20 May 2020 - 24 June 2020. These can be viewed in the 'Q&A' tab on this page. If there are any further questions about the proposal, please email Info@wannonwater.com.au.

In response to requests from the local community for an extension of time for submissions, EPA has decided to extend the closing date for submissions to 1 July 2020, likewise the on-line Q&A has also been extended to 24 June 2020.

Wannon Water have provided further information following recent enquiries from the public. This information is separate to the works approval documentation and can be viewed here. A fact sheet has also been provided in the 'Supporting documents' section on this page.

What the application proposes

Wannon Water proposes installing a new inlet screening facility. The proposal also includes two new intermittently decanted extended aeration (IDEA) tanks at the site.

The existing STP treatment process begins with coarse inlet screening to remove solids and non-biodegradable materials prior to flows entering the IDEA tanks for treatment. Once treated, effluent undergoes further fine screening through a series of tertiary screens (currently Wannon Water is engaged in a project to install a 1 mm screen automated tertiary effluent screen) before being discharged directly into the Southern Ocean at Thunder Point.


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David Robinson

Project Manager - Licensing, EPA

Lauren Byrnes

Stakeholder Solutions Advisor - EPA

Chris Mahony

Project Manager - Warrnambool STP Upgrade


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