The diagram shows the process of collecting and treating rainwater for drinking purposes in an Australian town. The system involves several stages, beginning with collection from individual houses and culminating in the delivery of potable water.
The process commences with rainwater falling on the roofs of houses. From there, it is collected and channeled down through drains. This initial collected water then flows into a series of four large storage tanks, presumably situated at different houses or collection points, as indicated by the arrows pointing from each house to its respective tank. These tanks are interconnected, allowing the water to flow from one to the next, suggesting a communal or networked collection system.
Following this initial collection, the water is directed towards a water filter. This stage is crucial for removing physical impurities from the rainwater. After filtration, the water proceeds to a large storage tank, acting as a reservoir for the filtered water. From this storage, the water is then transferred to a “Water Treatment” facility. Here, chemicals are added to the water, likely for disinfection and further purification, to ensure it is safe for consumption. Finally, the treated water is pumped out, ready to be distributed as “Drinking Water” to the town’s residents.
In summary, the diagram effectively outlines a multi-stage rainwater harvesting and treatment system. It highlights the journey of water from rooftops, through initial collection and filtration, chemical treatment, and finally, its transformation into safe drinking water for the community.