The pattern presents a specific infrastructure designed for filtering input water and processing clean water for drinking.
Overall, the filter includes two parts, the filtering and the storing, which take place in two separate buckets connected by a pipe.
At the first stage, the filtering, water need to be purified is poured into the barrel from a bottle which is handled by a worker, after which the impure water begin to pure. There are three filter layers inside the construction, the first tier is constituted with sand and the medium layer is equipped with charcoal, while the last tier is filled with gravel, in which install the one end of the hose and the other end stretches out the barrel. After penetrating through the sand layer, the water flows into the charcoal layer for a further cleaning process, after which it continues to pure in the final gravel layer until it is ready for leaving and outputting through the pipe.
After transferring by the pipe, the clean drinking water is removed into the second barrel, namely the drinking water storage tank, preparing for people to have a drink. People just need to turn on the tap when they want to drink clean water.