The provided diagram illustrates the process of rain water harvesting in an Australian Town, highlighting the collection of rain water and then treating into drinking water.
Overall, the process of converting rain water into drinking water involves a series of steps. These steps involves: collection, filteration, storage, water treatment, and then conversion into drinking water.
Initially, all the rainwater is streamlined from the roof using a drain and transfered for underground water filteration. This filtered water is then stored underground in a storage. Moving forward, the filtered water is sent using a pipeline to water treatment plant, in this plant further decontamination of water is done through chemical. Finally, the water is free from all the impurities and is sent to local households via pipeline. This procedure is called rain water harvesting.
In conclusion, it seems like the most eco-friendly way of water treatment, as it does not require to dig deep holes and drpping the ground water level.