Coliban Water is investing $40 million over the next decade in upgrades of its regional water and wastewater systems as part of its Big Water Build program. The initiative will enhance water treatment, storage and reclamation facilities across northern Victoria, ensuring services remain reliable and sustainable amid population growth and a changing climate.
The upgrades will increase treatment capacity, improve operational efficiency, and ensure continued delivery of safe, high-quality drinking water to more than 180,000 customers.
Managing Director Damian Wells said the program was designed to meet the region’s evolving water needs while supporting long-term sustainability.
“These essential upgrades will make sure we can continue to provide clean drinking water to our towns and suburbs,” Wells said. “By upgrading our ageing infrastructure, we’re ensuring greater reliability, readiness for growth, and a more environmentally friendly approach to water management.”
Delivering upgrades to protect public health and the environment
The Big Water Build will modernise both water and sewerage networks, with early projects prioritising critical upgrades to water treatment and reclamation plants. The improvements will help maintain water quality, water pressure and wastewater reliability, all of which are vital for public health.
In addition to improving efficiency, the upgrades will lower carbon emissions, increase the use of recycled water, and reduce noise and odour from treatment operations.
Around $30 million will be invested in the program’s first five years, with works to commence in Cohuna in early 2026, followed by projects in Axedale, Echuca, Malmsbury and Goornong. These efforts build on major upgrades already underway in Bendigo, supporting growth in Epsom, Huntly, Marong and Maiden Gully.
Collaborative delivery model strengthens local partnerships
To deliver the program efficiently, Coliban Water has appointed five delivery partners under a long-term partnership model.
Guidera O’Connor Construction, Laurie Curran Water, and Filtec International will lead mechanical and electrical works.
Civil and Earth Australia, along with Leed Engineering and Construction, will deliver civil and earthworks packages.
The model promotes strong relationships between utility and contractor teams, providing stability and opportunities for local suppliers, subcontractors and workers.
Wells said the approach ensures better outcomes for both Coliban Water and the communities it serves.
“By using the long-term partnership approach, we’re spending money more efficiently and building strong relationships with contractors who care about using local materials and supporting our communities,” he said.
Smart water technology driving sustainability outcomes
Coliban Water will integrate modern treatment technologies to enhance performance and sustainability across its plants.
In Cohuna, new infrastructure will include a pump station, upgraded pipelines, and systems that use ultraviolet light and powdered carbon to improve water quality. These works will ensure the utility can meet growing community demand while maintaining compliance with water quality standards.
Wells said the investment reflects Coliban Water’s forward-thinking approach to water and wastewater management.
“This is a win for our environment and our community,” he said. “We’re excited to deliver upgrades that ensure safe, reliable and sustainable services for generations to come.”
Supporting regional resilience through innovation
The $40 million investment supports Coliban Water’s broader mission to create a more resilient and adaptive network. By improving treatment capacity and investing in renewable-ready infrastructure, the program will future-proof the region’s water systems against drought, as well as growth and ageing assets.
“We’re not only investing in infrastructure,” Wells said, “we’re investing in the future health of our communities and the sustainability of our natural environment.”
For more information about ongoing projects under the Big Water Build, visit connect.coliban.com.au.