Desalination Plant securing our water supply
The Victorian Government has ordered 125 gigalitres (GL) of water from the Desalination Plant for next financial year to secure our water supplies in the face of population growth, climate change and falling rainfall.
The order mirrors last year’s and won’t result in any increase to average water bills for Melbourne households – which are already among the lowest in the country.
Although 2020 started wetter than average, rainfall in 2019 was five per cent lower than the 30-year average across Melbourne’s four major catchments.
Over the last five years, Melbourne has used around 68 gigalitres (GL) more water each year than what flows into our catchments naturally.
Desalinated water has made up the difference – supplying 190 GL into Melbourne’s supply system since the plant was turned on in 2016-17.
Without vital rain-independent water from the plant, Melbourne’s water storages would be 50.4 per cent or 10.8 per cent lower than the 61.2 per cent capacity they are at today.
As well as providing vital water for Melbourne, it also underpins water security for Geelong, Ballarat and other regional areas such as South Gippsland.
“This order will boost water security and supply for Melbourne and major regional centres without increasing water bills for households,” Water Minister Lisa Neville said.
“The fact is it’s raining less and we’re using more water – the desal plant makes up the difference, ensuring we have enough water to meet growing demand.”
Melbourne Water’s Executive General Manager Service Delivery Dr Nerina Di Lorenzo said: “Drought and the impact of bushfires across Victoria and other parts of south-east Australia in recent months have highlighted the importance of improving our water security through increasing water storages.”
“We are acting now by planning for the future so our city can handle the challenges of continued population growth, increasingly high temperatures and reduced water availability.”