15 July 2026
2-minute read

John Holland appointed to lead early design phase for major Melbourne recycled water upgrade

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John Holland has been appointed to lead the early design phase of Yarra Valley Water’s new Wollert Recycled Water Treatment Facility.

The new, purpose-built recycled water facility will increase treatment capacity from 2.9 million litres per day to 10 million litres per day, supporting the future housing growth expected over the next two decades while reducing demand on Melbourne's drinking water supplies.

John Holland Executive General Manager Infrastructure Andy Hunter said the delivery team was looking forward to working closely with Yarra Valley Water to deliver an innovative recycled water facility that will support this growing community.

"John Holland brings a deep legacy and expertise in Class A treatment projects that help new communities thrive from day one," Mr Hunter said.

The upgraded facility will be built alongside the existing treatment plant site in Wollert, which will continue operating throughout the design and construction phases to ensure uninterrupted recycled water services.

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Yarra Valley Water General Manager Asset Services, Bridie Fennessy, said as Melbourne's north continues to grow rapidly, the project is an important investment in the infrastructure needed to support future communities while enabling more sustainable water use.

“Our existing Wollert plant has served the community for more than 15 years. This upgrade will significantly increase its capacity so it can continue supporting growth for decades to come.”

“John Holland brings strong technical expertise in delivering major infrastructure projects, and we’re pleased to work in partnership on such an important facility. Their appointment to lead the early design will help shape a modern, efficient facility that supports future growth and long-term reliability.

Once commissioned, the upgraded facility will support supplying all new homes in the Northern Growth Area to be connected to recycled water.

The new facility is expected to be commissioned in approximately four years.

Find out more about how John Holland provides the infrastructure that supplies safe drinking water and removes wastewater for communities across the nation.

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ACKNOWLEDGEMENT OF COUNTRY

John Holland pays respect to the Traditional Owners and Custodians of the land on which we work and live, and their connections to land, sea and community. We pay our respect to their Elders past and present and extend that respect to all First Nations peoples today.