The provided diagram illustrates a simple system that turns water into clean water.
Overall, the diagram depicts the key stages related to this process. Also, it is clear from the illustration that there are several noteworthy observations to be made.
This water filter contains two storage drums, which are connected with a tube. These drums have removable plastic lids. The first drum consists of three layers: sand, charcoal, and gravel. Initially, water is added to the upper storage drum. As the first step of the filtration process, water is filtered through the first sand layer. Next, water is passed through the charcoal layer, which is in the middle. Then, water is filtered through the gravel layer at the bottom. After that, the filtered water is passed to the other storage drum through the tube. Finally, the filtered drinking water can be used through the tap at the bottom of the barrel.