Yarra Valley Water


Yarra Valley Water completes vital project in Melbourne’s booming outer north

Yarra Valley Water has finished work on the Kalkallo Creek Main Sewer, a critical piece of infrastructure which will help to manage sewage for up to 420,000 people by 2040 in Melbourne’s northern growth corridor. 

The $32 million sewer will collect sewage flows from 39,400 houses between Donnybrook Road and Wallan and is an integral part of the area’s sewerage system which will grow to 120,000 houses in the next 20 years.

Yarra Valley Water Managing Director, Pat McCafferty said that the new sewer is purpose-built to service the impending growth in the area.

“When the outer north is completed, it will be bigger than Geelong. We’ve invested heavily in this project now so it’s built to last and we don’t have to do extra work to expand it in the foreseeable future,” Mr McCafferty said.


The mammoth project began in April 2017 and was executed using large tunnel boring machines to dig a tunnel and then push lengths of pipe though the underground tunnel hole.

Trenchless technology was used to reduce the construction impact on the surrounding environment and prevent works from affecting existing infrastructure installed by other agencies.

The Kalkallo Creek Main Sewer is just one of the important projects that Yarra Valley Water is delivering in the region which is one of Australia’s fastest growing areas.

Mr McCafferty said that Yarra Valley Water is working hard to deliver the infrastructure that Melbourne’s outer north will rely on.

“The number of people who will soon call this area home is mind-blowing and we’re working really hard to ensure that the water and sewerage services can keep up with demand for years to come”, Mr McCafferty said.


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