The diagram illustrates the reuse process of stormwater in a city in Australia.
Overall, there are five stages in the process of recycling rainwater, beginning with the collection of rainwater and ending with pumping clean water that was recycled into households for use.
Firstly, stormwater is collected, which flows from sewers to the main pipe located underground. Next, water is led to the plant for treatment and the elimination of unnecessary materials through a four-step process. Large items, such as plastic and trash are removed first. Then, the filtering of small particles and the elimination of bacteria, viruses ensure water quality. Furthermore, unwanted molecules and salt are removed.
Accordingly, the remaining water is treated with chlorine to ensure safety when using 4 mg of chlorine per liter of water. Next, treated water is stored in a water storage facility. Finally, recycled rainwater is pumped into houses when needed for daily life.