Depicted in the given illustration is the process of purifying water to the drinkable one.
Overall, allocated water goes through a simple apparatus comprising two prime parts that are connected: the filter and the storage, and noticeably, despite being situated at a close vicinity to another, the filter is a bit above the storage drum.
At the outset, unpurified water is poured into the filter drum, which is then covered by a plastic lid; from which, the process commences. Liquid should have the impurities completely eliminated, after having infused through the three subsequent layers of substance, namely sand, charcoal, and gravel respectively. Once the filtering stages have completed, water is qualified for consumption, ending up lying at the bottom of the barrel.
The process, hitherto be succeeded by the liquid-pumping stage, in which drinking water is sucked on by a designated pipeline, being delivered to the closed storage vessel for later use. At the bottom of the barrel, located a fixed faucet, from which water can be taken.