Explain briefly the need to conserve water.

We need to conserve water for the following reasons-

1. The over exploitation of ground water often results in the lowering of water table.
2. The loss of vegetation causes drought and reduction of rainfall and lowering of the water table.
3. Irrigation utilises more than 90% of the total freshwater.
4. The increase in population results in water scarcity.
5. Our water resources are polluted and their water can hardly be used without adequate treatment.