<P> Rainwater harvesting is the accumulation and deposition of rainwater for reuse on - site, rather than allowing it to run off . Rainwater can be collected from rivers or roofs, and in many places, the water collected is redirected to a deep pit (well, shaft, or borehole), a reservoir with percolation, or collected from dew or fog with nets or other tools . Its uses include water for gardens, livestock, irrigation, domestic use with proper treatment, indoor heating for houses, etc . The harvested water can also be used as drinking water, longer - term storage, and for other purposes such as groundwater recharge . </P> <P> Rainwater harvesting is one of the simplest and oldest methods of self - supply of water for households usually financed by the user . </P>

Process of rooftop rainwater harvesting system followed in different parts of india
find me the text answering this question