Need of conserve water

Why should we conserve water ?

1. We all know that only a small fraction of water available on the Earth for the use of plants ,animals and humans. Most of the water is in the oceans and it cannot be used directly .The total amount of water on earth remains the same ,but, the amount of portable water is decreasing day by day.
2. The demand for water is increasing day by day. In many cities, long queues for collection of water are common. Also, more and more water is being used by industries.These factors are leading of shortage of water in many parts of all over the world. So, it is very necessary to save water.
3. Why we can't use ocean sea water:
• Oceans cover a major part of the earth.Oceans and seas has many salts dissolved in it ,the water is saline. So, we cannot drink it and other domestic, agricultural and industrial needs.
• The famous line of the poem "Rime of Ancient Mariner" written by S.T. Coleridge in 1798:
• "Water water every where
• Nor any drop to drink"
• Here, poet said that the ship lost in the ocean and they can't drink the water of ocean because it is not good for health.
• Ocean and sea water can also fail your kidney.

Rain water harvesting : 

 Rooftop rainwater harvesting: 

In this system, we collect rainwater from the rooftop to a storage tank, through using pipes.This water may contain soil and dust of roof and need filtering before it is used for any purpose. Instead of storing water in tank, we can go directly in the pit in the ground. This then seeps into the soil to recharge the ground water.