RAINWATER HARVESTING :
It means capturing rain where it falls or capturing the run off water in your own village or town. And taking measures to keep that water clean by not allowing polluting activities to take place in the catchments.
Therefore, water harvesting can be undertaken through a variety of ways.
1. Capturing runoff from rooftops.
2. Capturing runoff from local catchments
3. Capturing seasonal flood waters from local streams
Rainwater is the purest Form of water but when it falls on Rooftop or Ground, the water will get mixed with dirt particles and become polluted. To overcome this problem Rainwater Harvesting Filters are must in the process of Harvesting.