It is learnt that water is first thing created in the universe before anything. Since water is absolutely essential to human life so it should not be surprising that it is an important component of human history. Yet it is surprising how little attention water receives in historical accounts. Human have generally settled near convenient sources of water. Most of the great ancient civilizations depend on a particular source of water. Water was also an important source of power in the period before the industrial revolution. Even though steam power made water power less necessary. Water remained an essential component in all kinds of manufacturing processes.
It is used for healthy growth of farm crops and is used in the manufacturing of many products. Human beings, animals and plants need water to survive. It is odorless, colorless, and tasteless liquid. It is the nature’s most important gift to survive. It is necessary for the digestion and absorption of food and helps to maintain proper muscle tone. Water is known as natural solvent. Water has 3 states: solid like ice, liquid like water, gas like steam. All the human uses require fresh water. 97% of the water on the earth is salted and only 3% is fresh water, slightly over two third of this is frozen in glaciers and polar ice caps. Water molecule contains 2 hydrogen and an oxygen atom. Roughly 70% of an adult’s body is made up of water. At birth, water accounts for approximately 80% of infant’s body weight. The daily recommended amount of water is 8 cups per day, not all of this must be consumed is in the liquid form. Nearly every food or drink item provides some water to body.