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Where your water comes from

We use a number of water sources to supply customers.

Having access to multiple sources ensures we can meet demand, cater for a growing population and manage water supplies when inflows are low.

When local supplies are low, or reservoirs are at decreased capacity, supply changes ensure our customers have access to water that is safe, healthy to drink and meets the Australian Drinking Water Guidelines.

When water supply changes take effect, some customers may notice a slight change in taste. Naturally occurring minerals can affect how water tastes, without affecting the water quality.

The below table shows the available and current water sources for each town that Western Water services. It is subject to change at any time.

Town

Available sources

Current source
Last change

Bacchus Marsh & Darley

Merrimu Reservoir

Djerriwarrh Reservoir

Melbourne supply system

Merrimu Reservoir

May 2019

Bulla

Rosslynne Reservoir

Melbourne supply system

Melbourne supply system

May 2016

Diggers Rest

Rosslynne Reservoir

Melbourne supply system

Melbourne supply system

May 2016

Gisborne, New Gisborne and Gisborne South

Rosslynne Reservoir

Melbourne supply system

Melbourne supply system

March 2021

Lancefield*

Lancefield surface water (Garden Hut Reservoir, Lancefield Basin)

Lancefield ground water (local bores)

Local surface water (Rosslynne Reservoir, Romsey surface water)

Melbourne supply system

Lancefield surface water

Lancefield ground water

Melbourne supply system

March 2021

Macedon and Mount Macedon

Rosslynne Reservoir

Melbourne supply system

Melbourne supply system

March 2021

Melton and Melton South

Merrimu Reservoir

Djerriwarrh Reservoir

Melbourne supply system

Melbourne supply system

Merrimu Reservoir

April 2021

Myrniong*

Pykes Creek Reservoir

Pykes Creek Reservoir

N/A

Riddells Creek

Rosslynne Reservoir

Melbourne supply system

Melbourne supply system

March 2021

Rockbank

Merrimu Reservoir

Djerriwarrh Reservoir

Melbourne supply system

Melbourne supply system

June 2016

Romsey*

Romsey surface water (Kerrie Reservoir, Wright Reservoir)

Romsey ground water (local bore)

Rosslynne Reservoir

Melbourne supply system

Romsey surface water

Melbourne supply system

March 2021

Sunbury

Rosslynne Reservoir

Melbourne supply system

Melbourne supply system

May 2016

Woodend*

Woodend system (Campaspe Reservoir, Graham Brock Reservoir, Reservoir C and Mount Macedon reservoirs)

Rosslynne Reservoir

Melbourne supply system

Woodend system

November 2019

* These towns only receive fluoridated water when supplied with water from outside their normal water source. For example, in times of drought water may come from Melbourne or be brought in from other sources. The long term levels of fluoride during these times are below what is expected from a normal fluoridated water supply. For more information about fluoride, visit the Department of Health and Human Services website or call their hotline on 1300 761 874.


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