Desal Flows To Secure Melbourne’s Water Supply

19 March 2017

The first water from the Wonthaggi Desalination Plant has begun to flow into the Cardinia Reservoir helping to deliver water security for Victoria.

The delivery marks a significant milestone in guaranteeing a secure and resilient water grid – a grid that supports lives and livelihoods and combats the threat of reduced rainfall from climate change.

The benefits will reach well beyond Melbourne, bringing greater water security for communities across regional Victoria.

After an extra dry start to 2017, it will also bring extra security in the future to communities like Korumburra in South Gippsland, which is set to face water restrictions.

Based on a similar initiative in South Australia, Victoria will introduce a minimum annual water order from the Desalination Plant to be reviewed in three years, guaranteeing continued water security, better plant management and more steady prices for customers.

In a win for Melbourne households, Minister for Water Lisa Neville today also confirmed that water customers will not face additional charges on their water bills for this year’s 50 GL water order or the subsequent three minimum water orders.

This will save customers $12 for this year’s order on an annual average water bill. This will be done via efficiencies found within the water contract.

It comes after the former Liberal Government refused to use the desalination plant – preferring political point scoring over giving Victorian families and farmers the water security they need.

The latest Bureau of Meteorology data shows Victoria is set for an ‘Indian summer’, with temperatures in March well above average and rainfall at a decade-long low. Climate modelling also suggests there is an increased chance of El Niño forming later this year.

Rainfall across the four main catchments is 23 per cent below the 30-year average, with ten out of the last 12 weeks recording below average inflows into Melbourne’s storages. Since December 2016, Melbourne’s storages have fallen by 97 GL or 5.3 per cent.

Water storages have been decreasing since November and are now at 65.6 per cent – over 6 per cent below the same time two years ago. This is a reduction of approximately 112 GL.

Quotes attributable to Minister for Water Lisa Neville

We've learnt the lessons from the millennium drought and this secures our water supplies at a time when our reserves are decreasing.

“The minimum water order will help with the operation of the plant while not impacting on water bills.”

“The plant was not built to be turned on just when our water supply reached critical levels; instead its aim is to make sure that our supply doesn't fall to those levels in the first place.”

Reviewed 19 August 2020

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