Melbourne’s Water & Utilities – Are They Ready for 10 Million People?
Melbourne is growing fast. By mid this century, it is possible that our city might house 10 million people- nearly 2 times the current figure. Such growth is exhilarating but also poses a hard question, will our water, power and other vital resources be prepared to support such growth? And once you factor climate change into the equation, the task seems even larger.
This is not only about pipes, wires and large infrastructure. It is not only whether the parks that we walk will remain green, whether the tap water will be safe to drink, whether the lights will remain on during a 40-degree heatwave, or whether the families will afford their bills.
Water – From Dams to Desalination
Melbourne has been extremely dependent on its dams. They have done a good job, but rainfall is becoming less predictable due to the droughts and increasing summers. Wonthaggi desalination plant has become a huge reserve where seawater is transformed into drinking water. Desalination is costly, however, and some people believe that we should be utilizing more recycled water and stormwater harvesting.
When there are 10 million people running taps, watering gardens, filling swimming pools, etc. Will that go that deep with the existing system? The answer to this is likely no without a major investment.
Energy – Keeping the Lights On
The Melbourne power grid has been struggling years to meet the demand particularly in summer heatwave, whereby air conditioners strain the power grid to the ceiling. To this, the abandonment of gas and the adoption of electric cars, and the strain will only grow.
The positive aspect is that Victoria is spending a lot of money on renewables, such as solar and wind, and storage. However, infrastructure is not constructed instantly. This will require smarter grids, more battery storage and more resilient systems to withstand extreme weather. Otherwise, blackouts may increase.
Climate Change – The Wildcard
Climate change makes every planning challenge harder. We’re looking at longer dry spells, heavier downpours, and hotter peak days. For utilities, that means:
- Less predictable water supply.
- Higher demand for electricity.
- Greater flood risk in low-lying suburbs.
These aren’t distant problems. Melbourne has already seen flash floods in the CBD, power outages during summer, and water restrictions in the past two decades.
Affordability – Who Pays for Growth?
Big infrastructure projects don’t come cheap. Whether it’s a new desalination plant, a bigger power grid, or recycled water pipelines, someone has to foot the bill. Often, that cost trickles down to households through higher bills.
As Melbourne grows, the risk is that some families will struggle to keep up with rising costs. Affordability needs to be part of every planning decision, not an afterthought.
Are We Ready for 10 Million?
The truth is, Melbourne is partly ready—but not fully. We have world-class engineers, solid infrastructure, and a history of solving big problems. But with population growth and climate change moving faster than many expected, there’s no time to be complacent.
We need more forward planning, bigger investments in recycled water and renewables, and a strong focus on equity so that no one is left behind.
The Bottom Line
Melbourne can seize opportunities to be a global leader in terms of city preparation to a changing climate. That however will not occur when we wait until the crisis hits. It is not merely whether our utilities can serve 10 million people that is the question, but are we planning early enough to ensure that all Melburnians, now and in the future, have affordable access to water, energy, and other vital services.
What do you think—are we doing enough today to prepare for the Melbourne of tomorrow?
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