1. Roof top rain water is collected using a PVC pipe
2. Filtered using sand and bricks.
3. Underground pipe takes water to sumps from immediate usage
4. Excess water from the sump is taken to the well.
5. Water from the well recharges the underground.
6. Later take water from the well.
-Answered by priyanshu kumar On 03 October 2019:12:00:30 PM