The picture illustrates how clean water is filtered. Overall, there are two main stages in the process : filtration above storage drunk and storage and consumption a lower tank.
Regarding equipment, a sizable storage drum with a plastic lid to avoid exposing the water to environmental factors. The plastic barrel is made up of three layers, which are sand, charcoal and gravel. This filtration barrel is conncted to a storage drunk by a curved pipe.
At the beginning of the process, impure water is poured into a container, where the filtering process takes place. The water passes through the layers of sand, charcoal and gravel to eliminate impurities. After successfully filtering, the water flow a specialist pipe into the storage tank, where is ready for consumption by pressing the tap open.