RAINWATER HARVESTING

Rainwater harvesting?(RWH) is the collection and storage of rain, rather than allowing it to run off. Rainwater is collected from a roof-like surface and redirected to a tank, cistern, deep pit (well, shaft, or borehole),?aquifer, or a reservoir with percolation, so that it seeps down and restores the ground water. Dew and fog can also be collected with nets or other tools.

Rainwater harvesting is one of the simplest and oldest methods of?self-supply of water?for households, having been used in India and other countries for many thousands of years.

Rooftop rainwater harvesting is used to provide drinking water, domestic water, water for livestock, water for small irrigation, and a way to replenish groundwater levels.