How many types of water

We get water from various sources such as rivers, lakes, ponds, wells and springs. The rivers get their water from the melting of snow lying on the peaks of snow mountains called glaciers and also from rain. Rain also provides water to lakes, ponds and wells. Rain water is the purest form of natural water. Rain water is not salty so it is fit for drinking but becomes contaminated and impure when it flows into rivers, lakes and ponds. Spring water is also fit for drinking.

More than two-thirds of the earth is covered with water. Thus, ocean is the largest source of water. Water in oceans and seas has large amount of salt so it is not fit for drinking.

Water exists in all the three states – snow as solid, water as liquid and water vapour as gas. Snow is the solid state of water, tap water is the liquid state of water and water vapour in air is the water in gas state.