The diagram illustrates how rainwater is collected, processed, and supplied as drinking water in an Australian town.
Overall, the process consists of several stages, beginning with rainwater collection from rooftops. The water is then filtered, stored, and treated with chemicals before being distributed to households for consumption.
Initially, when it rains, water is collected from rooftops through a system of gutters and directed into underground drainage pipes. These pipes transport the rainwater to a filtration unit, where large impurities are removed. Once filtered, the water flows into a storage tank.
Following this, the stored water is sent to a treatment plant, where it undergoes chemical purification to ensure it is safe for drinking. In the final stage, the treated water is pumped through a separate pipeline system and distributed to houses, making it suitable for drinking and other domestic uses.