Teacher background information
What is wastewater?
Wastewater is water that has been used by the community. It includes water used in the home (toilet, shower, sink, dishwashers and washing machines), as well as the liquid from some industrial manufacturing processes.
Every day WA consumers discharge more than 432 million litres of wastewater into wastewater systems. This is the equivalent to approximately 185 Olympic-sized swimming pools.
Where does wastewater go?
The wastewater from properties connected to Water Corporation’s wastewater system is collected in sewers and transported to a treatment plant. After treatment, the wastewater is disposed of in a way that is safe for our health and for the environment. Treated wastewater eventually returns to the water cycle, by being discharged to the ocean, rivers, streams, land or through evaporation.
Types of wastewater
Wastewater is made up of ‘greywater’ and ‘blackwater’. Greywater is wastewater from washing machines, showers, baths, wash basins, spa baths, laundry tubs and kitchens. Blackwater is wastewater from toilets, urinals or bidets.