The plant treats sewage using a series of large ponds, called lagoons - producing 40 billion litres of recycled water each year.

There are a number of physical factors that will affect the design of the drain which should be considered.

Sediment basins are ponds with open water that capture coarse sediment and litter carried by stormwater.

Swales are linear, depressed channels that collect and transfer stormwater.

Stormwater harvesting involves collecting, treating, storing and using stormwater runoff from urban areas.

Apply for a stormwater harvesting licence to connect to a stormwater drain, watercourse or open channel, or harvest stormwater from a waterway managed by Melbourne Water.

​Early planning is important to ensuring a successful WSUD project.

The concept design stage involves selecting the type, location and approximate size of stormwater treatments.

The functional design stage contains the next level of detail following the approved concept design.