Supporting customers while investing in water security
Wannon Water’s 2024/25 Annual Report highlights a year of steady performance and careful planning in challenging environmental conditions.
During some of the driest 18 months on record and devastating Grampians bushfires, the organisation ensured reliable water supplies by transferring water through the Rocklands Pipeline for the first time, added access points to enhance water carting, and supported customers in need.
The dry conditions also affected infrastructure, with crews responding to 335 bursts and leaks on water mains, valves, and fire plugs – 31 per cent more than the previous year.
Despite these challenges, the organisation delivered 13,026 million litres of drinking water and treated 9,811 million litres of sewage and trade waste.

Managing Director, Steven Waterhouse reaffirmed Wannon Water’s commitment to the region. He said providing support to customers continued to be a key focus, with concessions and rebates playing a critical role, particularly in rural areas affected by the extended drought.
“We recognise that challenging conditions impacted an increasing number of our customers, with rising costs of living a major factor,” Mr Waterhouse said.
“Water conservation remains a priority, with the average residential water use increasing to 183 litres a day. Campaigns such as Every Drop Counts and WaterSmart digital loggers encourage responsible water use while helping customers lower costs.”
Ongoing major projects include the $10 million Gellibrand River Restoration and Supply Resilience Project, the $52 million Quality Water for Wannon Program, and the $85 million Warrnambool Sewage Treatment Plant Upgrade. These projects will ensure the ongoing security of water and sewage services.
Other major projects included the commissioning of a new bore to provide additional security of supply for Port Campbell, Peterborough and Timboon and an upgrade of an 11-million-litre clear water storage tank at the Hamilton Water Treatment Plant.
The annual report is now available online.