Corner of Spencer and Siddeley Street
Early January 2026 until April 2026
We will continue works to move other underground services.
Project overview
We’re building approximately 750 metres of new sewer pipes under Melbourne’s CBD and Docklands, to double the capacity of the sewer. The new pipeline will be installed under Flinders Lane, Spencer Street, Siddeley Street and Wurundjeri Way.
This project will be delivered by Aqua Metro for Greater Western Water.
We’re committed to letting local communities know about our works. If you live in the area, we’ll send you a letter with more information before we start construction. As the project continues, we’ll keep you updated.
Project update
This is a notice under section 175 of the Water Act 1989 (Vic).
Due to population growth Greater Western Water intends to build a new sewer on Siddeley Street, Flinders Lane, Spencer Street and Wurundjeri way to improve the network and ensure reliable sewer services for the local community.
Construction activities would affect residents and businesses on Flinders Lane, Spencer Street, Flinders Street, Siddeley Street and Wurundjeri Way.
If you wish to make a submission about the proposed construction, you can send your submission to Greater Western Water either by:
Mail: Locked Bag 350, Sunshine VIC 3020
Email: engagement@gww.com.au
Online: gww.com.au/contact-us
Submissions must be received no later than close of business Friday 19 December 2025.
If no submissions are received, Greater Western Water intends to carry out the construction works from Monday 6 January 2026.
For general enquiries regarding this notice or the proposed works please connect with us via gww.com.au/contact-us or call 13 44 99 and we will get back to you as soon as possible during business hours Monday to Friday.
Construction of the new sewer
Major construction on the new sewer is expected to start in April 2026. If you live or work near our works, we will update you and provide more specific details before our construction starts.
Location of sewer construction
The line on the map below shows where we will install the underground sewer pipe. The pins show the location of our construction sites.
We will be completing our work in stages, at a few construction sites at a time, to reduce impacts on the local area.
Current and upcoming works
We are currently taking a break over the holiday period. You will see some of our equipment stored in the area. We'll do regular checks for security and safety.
From early 2026, we will restart works to prepare for construction of the new sewer.
Sign up for project updates
Do you live, work or visit the area around our construction? Stay up to date on works happening near you by filling in the form below.
We'll only contact you about this project.
