It is a reality that water shortage is experienced in most of the countries all over the world. Even though more than half of water covers our planet, we cannot use that water because of its high salt content. Others put up water tanks to give solution to this problem. They save water into their water tanks so that they are assured that they have water to use every time their main source is unavailable. They fill their tanks for future use. Even the water to drink is most often comes from the water tank and without water tank you surely cannot endure the everyday life of living waterless.