The illustration below gives us information about structure of water filter and how it works to provide us drinking water.
The cleanising process requires 2 barrels,hose and some type of filters. Impure water passes through 3 steps of filtration and at the end gets to the storage tank of drinking water.
Impure water pours into the first barrel which construction contains 3-staged filters. It stars with sand,follows by charcoal and ends with gravel. Both of tanks linked to each other by pipe.
Afterwards,produced clean water gets into second barrel which is storage tank for drinking water by hose. The hose is used as filter and as tube to pump water and do not let debries get into second tank. The second tank is bigger and has a tap for pouring it.
