The diagram illustrates the systematic process of accumulating rainwater for consumption in a town in Australia.
Overall, the rainwater collection consists of multiple stages designed to purify and store water before it is made available for drinking, while also providing a mechanism for excess water drainage.
Initially, the system begins by capturing of rainwater from rooftops, which is directed to a water filter. The filtration process eliminates debris and particulate matter to make sure that the water is suitably clean for the subsequent handling stage. In the water treatment phase, the water is further treated with chemicals in order to meet health and safety standards.
The treated water is piped directly to households and establishments to use as drinking water. It is noteworthy that any excess water that arises during the course of collection and purification is passed through a drain outlet, to prevent overflow and potential issues related to water management in the society.