City West Water and Western Water merged on 1 July 2021 creating Greater Western Water.

GWW is one of 3 retail water corporations serving customers in metropolitan Melbourne. It provides drinking water, sewerage, trade waste and recycled water services to residential and business customers from Melbourne’s Central Business District (CBD) all the way to Lancefield in the Macedon Ranges.

Greater Western Water services more than 430,000 homes and over 1.2 million people from 130 different cultural backgrounds in some of Australia’s fastest growing suburbs.

Greater Western Water also serves major tourist attractions such as Melbourne Zoo and Melbourne Museum and global events including the Australian Open tennis tournament, Melbourne International Comedy Festival and the AFL Grand Final.

Want to know more? View the data for all 18 water corporations.

Aboriginal acknowledgement

Greater Western Water respectfully acknowledges the Traditional Owners of the lands and waters upon which it works and operates, the people of the Kulin Nation. It pays its deepest respects to the traditional custodians past, present and future. Greater Western Water acknowledges the continued cultural, social and spiritual connections that Aboriginal people have with the lands and waters, and recognises and values that the Traditional Owner groups have cared for and protected them for thousands of generations.

Greater Western Water will further develop its partnership with the Traditional Owner groups to ensure their contributions to the future of the water management landscape and to maintain their cultural and spiritual connection.

Local government councils

Local government city councils serviced by Greater Western Water include:

  • Brimbank
  • Hobsons Bay
  • Maribyrnong
  • Melbourne (north of Yarra River)
  • Moonee Valley
  • Wyndham
  • Yarra
  • Melton
  • Hume
    • Macedon Ranges
    • Moorabool

Water sources

Along with the other 2 metropolitan water retailers, Greater Western Water purchases bulk water from wholesaler Melbourne Water.

This water is sourced from the Thomson River and Yarra River catchments and supplied to Greater Western Water from 3 main locations:

  • Silvan Reservoir near Mount Dandenong
  • Sugarloaf Reservoir near Yarra Glen
  • Greenvale Reservoir near Somerton

Assets at a glance

Greater Western Water operates and maintains a range of assets, including the following water and sewerage infrastructure.

Board of Directors

The Board of Directors is responsible for Greater Western Water’s strategic planning and is accountable to the Minister for Water for the corporation’s performance. The Board is supported and advised by the Executive, who oversees the corporation’s day-to-day management under the leadership of the Managing Director.

Find out more about Greater Western Water's board.

More information


Address: 1 McNab Ave, Footscray VIC 3011

Postal: Locked Bag 350, Sunshine VIC 3020

Phone: 13 16 91

Page last updated: 19/10/22