The diagram illustrates the process of collecting and reusing rainwater for household consumption. Overall, rainwater passes through multiple stages, from collection in tanks to treatment for safe usage, before returning to domestic systems.
At the first stage, rainfall is gathered from rooftops and directed into a storage tank beside the house. This water can then follow two different routes. One leads to the drinking water supply after being purified in a treatment facility, while the other is used directly for household tasks such as washing and cleaning.
Wastewater generated from domestic activities is transported to a treatment plant. After being processed, part of it is recycled back to homes, while the excess is discharged into natural waterways. Meanwhile, stormwater that flows over the ground is sent through a separate treatment system before being released into rivers.
As for the working mechanism, the system functions on a cycle of collection, purification, and redistribution. Rainfall is first stored and filtered, then either consumed directly or treated for drinking purposes. Used water is not wasted; instead, it is processed and partly reused, while the surplus is safely returned to the environment. This closed-loop design ensures efficiency in water supply and reduces unnecessary loss.