Western Trunk Sewer Upgrade Project

Shape Copy 3 Future

Melbourne Water is upgrading the Western Trunk Sewer, which runs from the Brooklyn Pumping Station to the Western Treatment Plant in Werribee. It is a vital part of our sewer network, which transfers 60 per cent of Melbourne’s sewage to the Western Treatment Plant.

The Western Trunk Sewer was constructed in the late 1980s and is at the end of its service life. The sewer main consists of 15.2km of deep tunnel from Brooklyn Pumping Station to Hoppers Crossing Pumping Station and 7.3km of shallow tunnel from Hoppers Crossing Pumping Station to the Western Treatment Plant.

As part of Melbourne Water’s regular inspection program, it was revealed that three sections of the sewer and six manholes were at the end of their service life. The three sections of the sewer that need to be upgraded are:

  • Wattle Avenue to Duncans Road, Werribee (adjacent to the Princes Freeway).
  • Nunniong Street to Kiely Avenue, Werribee (adjacent to the Princes Freeway).
  • Main Drive, Cocoroc (located on Melbourne Water land).

Upgrading sewers is complex so we will be investigating the best options to ensure we choose an approach that is safe, minimises impacts to the community, and ensures the sewer continues to operate effectively and efficiently.

Construction is expected to start in 2020 and be completed by late 2021.

Preliminary works

Before works on repairing the sewer can begin, testing is required on the current condition of the pipe. These works will be occurring from Monday 23 September to Friday 11 October 2019.

There will be no disruption to your water or sewer service during these investigation works.

Standard working hours

Working hours will be 7am to 5pm Monday to Friday.

Night works

We will be conducting some investigation works at night when the sewer flows are at their lowest. These night works will be occurring from Tuesday 8 October to Friday 11 October between 1am to 11am.

Contact us

For more information, please contact the Western Trunk Sewer Upgrade Project Team:

Last updated:
26 September 2019