The diagram illustrates the process of harvesting rainwater for drinking usage in an Australian town.
Overall, it can be seen that there are approximately six steps in the process, starting with the collection of rain and ending with the delivery of treated potable water to the residents.
Initially, the process commences with capturing the rainwater on the rooftops of each house in the town. After that, the rainwater runs down through a system of drain pipes to the water filter, where it undergoes a process of filtering to remove impurities found in the water. Once the water is filtered, it moves through another pipe to a large storage tank.
When water is needed, it is delivered to another similar sized water tank, known as water treatment, where the water is treated with chemicals to make it safe to drink. Finally, treated pure water is pumped through another set of pipes to each individual house, where residents can access drinking water through their water faucets.