Melbourne’s sewerage system
Our city is always changing. By 2030, nearly 6 million Melburnians will be flushing the toilet, increasing the volume of wastewater that will come through our sewerage system.
Through 400 kilometres of underground pipes and sewers, we manage and treat our city’s sewage, ensuring the health of our environment, our communities and our families.
Safe and reliable water supply
Sewerage is made up of 99% water. That's why we’re recovering Melbourne’s wastewater, treating it and turning it into recycled water for non-drinking purposes.
Find out more about how our recycled water helps take the pressure off drinking water supplies.
Fair and affordable water bills
Every Melburnian deserves safe and reliable sewerage services.
That’s why we’re investing in sewerage infrastructure to reduce future repair and replacement costs, ensuring we maintain a strong, sustainable sewerage system for years to come.
The sewerage charge on your water bill keeps our sewerage network running. It also funds improvements to the sewerage system as our city continues to change and more Melburnians flush their toilet.
Find out how our 2026 Price Submission is ensuring fair bills for everyone
Protecting our natural environment
By 2030, nearly 6 million Melburnians will be flushing the toilet. That means more sewage coming into our system that must be treated.
That’s why at the Western Treatment Plant, we purposefully manage our nutrient-rich lagoons, to create an ideal habitat for birds and other wildlife.
Resilient and sustainable sewerage infrastructure
We’re planning ahead to ensure Melbourne’s sewerage infrastructure can withstand future challenges.
We’re investing in advanced technologies to reduce future repair and replacement costs, ensuring we maintain a strong, sustainable sewerage system for years to come.