The diagram shows us the construction of simple water filter and how it works to produce clean water.
Overall, it consists of two huge tanks, one of them is responsible for purifying water, and other one is for storing.
Focusing on the construction of the filter first, it is a huge tank with cap that opens. Additionally, it has three levels of sand, charcoal and gravel, which filters dirty water.
Furthermore, gravel is located on the bottom of the filler and long tube is connected to it which moves the filtered water to another tank where purified drinking water is stored. The tank for storing drinking water is the same size and has a cap on the top. Also, there is small fduice on the bottom of it to poor some water.
