How would you feel if somebody offers you a glass of clean drinking
water in scorching heat? Amazing! Isn’t it? Water is a fundamental
human need. It is one of the primary necessities, without it a living being
cannot survive. Each person on earth needs at least 20 to 50 litres of
clean, safe, drinkable water for drinking, cooking and to keep diseases at
bay. It is sad fact that there are billions of people around the world who
don’t have access to clean drinking water.