Two-third of the earth’s surface is covered by water and the human body consists 75% of it, from it is clear that water is one of the prime elements responsible for life on earth.
Without water we can’t survive everywhere water is needed for various purposes as follows:
- For cooking and drinking
- For heating and air cooling
- For growing crops
- For bathing and washing
- For watering lawns and gardens
- For street washing
- For fire fighting
- For recreation in swimming pool, foundations and cascades
- For power generation and various industrial processes, etc.
Ancient civilization developed along the river banks due to the availability of water for domestic and irrigation purpose.