Rainwater Harvesting
Rainwater Harvesting in urban areas is the process of collecting, filtering and using of rainwater, which falls on the rooftop (terrace or tile roof) and in the portico of the house.
Rainwater Harvesting Method:
Water falling on a flat rooftop should be made to run through a pipe connected to the roof and prevented from running off to the drainage on the roadside. This water should be filtered and stored in tanks constructed for the purpose of storing rainwater. In case of houses with sloped rooftops (R.C.C., Tiles and Asbestos), a gutter should be attached to the roof and the water collected in it should be made to go through a pipe attached to the end of the gutter. The water, which runs down from the pipe, should be filtered and stored in the rainwater harvest tanks. A good quality filter is needed for purifying the water. This is because, although the rainwater is basically pure, the water flowing from the rooftop usually will contain waste material in it.
Rainwater harvesting can be adopted in three methods. These are: recharging of bore wells near the house, recharging of ground water sources and collection of rainwater for reuse.
Borewell recharging
Ground water recharging
