The water cycle Wastwater treatment plant Wastewater treatment plants treat wastewater, also known as sewage, from the sewerage system. Once the waste is treated it is then either discharged to the environment or it is recycled as effluent reuse. A wetland is a low-lying area of land often inundated or permanently covered by shallow water. There are many different types of wetlands which can be found all the way from the coast to the middle of the Australian continent. The many types of wetlands may also be referred to as marshes, mangroves, swamps, bogs or billabongs.
Wetlands are rich in biodiversity and are the home to many unique wildlife species.
They also can provide a seasonal home for migratory birds from all over the world. They play a major role in the water cycle by storing and filtering water and replenishing underground water supplies. Wetlands can also be effective in cleaning polluted water by reducing aquatic plant nutrients, suspended solids and oxygen demands. Reservoirs Water is transferred from the dams and treatment plants either by gravity or pumping stations to the storage water reservoirs. These reservoirs are human-made water storage areas, usually on high land.