The diagram illustrates the process of gathering and transforming rainwater into drinking water in an Australian town. Overall, this process contains four main stages where rainwater is collected, filtered, stored, and treated for household consumption.
As rainwater falls down to the roof, it is accumulated using a draining system consisting of drains attached on the side of each house. All these drains are then connected underground, leading the rainwater to flow into a tube where it gets filtered to remove any dirt and impurities. The filtered water then travels through a pipe to a tank where water is stored.
From this point water goes through the treatment process. It flows into another tank with chemicals inside to make sure it is safe for consumption. After this stage of the process, the water becomes drinkable and travels along the pipes to each household, generating clean water for people in the town to use.