Rainwater harvesting systems consist of the following components:
Catchment- Used to collect and store the captured rainwater.
Conveyance system – It is used to transport the harvested water from the catchment to the recharge zone.
Flush- It is used to flush out the first spell of rain.
Filter – Used for filtering the collected rainwater and removing pollutants.
Tanks and recharge structures: Used to store the filtered water which is ready to use.
The process of rainwater harvesting involves the collection and storage of rainwater with the help of artificially designed systems that run off naturally or man-made catchment areas like- the rooftop, compounds, rock surfaces, hill slopes, and artificially repaired impervious or semi-pervious land surfaces.