Question

Rain water harvesting is compulsory today . why

Answer 1

With several government banning the use of groundwater in construction and making it mandatory for residential projects to have water harvesting units, most developers are meticulously following this directive, especially in Gurgaon.
There are 4 states that made rain water harvesting compulsory in all houses.
1. Rajasthan
2. Madhya Pradesh
3. Tamil Nadu
4. Maharashtra

Answer 2

Answer:

It reduces soil erosion and flood hazards by collecting rainwater and reducing the flow of stormwater to prevent urban flooding. Most buildings that utilize rainwater harvesting systems have a built-in catchment area on top of the roof, which has a capacity of collecting large volumes of water in case of rainstorms