Learning Centre » Your water supply

Your water supply: Geelong region

Image shows the West Barwon Reservoir in the Otway Ranges, 100% full and 'spilling' (overflowing). The photo is taken overlooking the spillway, with the outlet tower clearly visible and the forrested catchment in the background.

West Barwon Reservoir, in the Otways, is one of Geelong's major water catchments. 

Geelong’s drinking water is predominantly sourced from forested catchments on the upper Barwon and Moorabool rivers.

During periods of drought, additional water can be sourced from the Victorian water grid via Melbourne and underground aquifers in Barwon Downs and Anglesea. 

An increasing number of businesses across the region use recycled water and new residential subdivsions in Armstrong Creek and Torquay North are connected to Class A recycled water via a dedicated 'purple pipe' network.



Barwon river system

Much of our drinking water in Geelong comes from the West Barwon Reservoir, near the township of Forrest in the Otway Ranges National Park.

The reservoir sits at the base of a 51 square kilometre catchment on the West Barwon River.

Water is fed via a 57-kilometre channel to the Wurdee Boluc storage reservoir, south of Winchelsea. The Wurdee Boluc channel also takes water from smaller tributaries and diversions en-route.

Water is filtered, disinfected and fluoridated at the Wurdee Boluc Water Treatment Plant before being delivered to customers throughout the greater Geelong region (including the Bellarine Peninsula and Surf Coast) via a network of pipes, pumping stations, covered storage basins and tanks.



Moorabool river system

A number of reservoirs north of Geelong comprise the upper Moorabool river system. Korweinguboora, Bostock and Stony Creek reservoirs make up the East Moorabool system, while Lal Lal reservoir, near Ballarat, is the main storage on the West Moorabool River. Lal Lal Reservoir is jointly managed by Barwon Water and Central Highlands Water, with Barwon Water allowed one third of its water.

Water from the Moorabool catchments is filtered, disinfected and fluoridated at the Moorabool Water Treatment Plant at She Oaks. The treated water is gravity-fed to Meredith, Lethbridge and storages around Geelong.



Alternative supplies

A number of alternative water supply options are available to boost supplies in dry conditions.


Barwon Downs borefield

Six bores, between 300 and 630 metres deep can extract up to 55 million litres a day, depending on demand, from an underground aquifer.

The groundwater is pre-treated on site to remove dissolved minerals such as iron, and then piped to the Wurdee Boluc Reservoir, where it is mixed with surface water.

Water is extracted from Barwon Downs under a groundwater extraction licence granted by Southern Rural Water.


Anglesea borefield

The Anglesea borefield comprises seven bores across two sites. The bores tap into the Lower Eastern View Formation, a vast aquifer some 700 metres below ground.

In times of drought, the borefield can supply up to 20 million litres a day (around one-fifth of Geelong's demand).

Groundwater is pre-treated to remove dissolved minerals, and then piped to the Wurdee Boluc storage where it is mixed with other water sources.

Water is extracted from the Anglesea borefield under a bulk entitlement issued by the Victorian Government. 

  More on the Anglesea Borefield project


Melbourne to Geelong Pipeline

The Melbourne to Geelong Pipeline is a 59-kilometre underground pipe connecting Melbourne's water grid at Cowies Hill, west of Werribee to Geelong's storage basins at Lovely Banks.

The pipeline can deliver up to 16,000 million litres of water a year; roughly half of the region's usage.

  More on the Melbourne to Geelong Pipeline project