Rainwater harvesting is done in two ways; one is, harvesting rainwater from rooftops of buildings and using the same for domestic purposes after proper filtering. The other is by diverting storm water and water harvested from rooftops to abandoned bore wells.

In case of the first, rainwater is collected from roof tops from existing down takes, connected to a common header and led to a trickling sand filter having individual filtering capacity of 10000 litres/ hour. The filtered water is then led to a nearby sump and used for domestic purposes. Chlorination if required is done before being pumped to users. This scheme is adopted for twenty buildings within the campus.

For recharging dry bore wells a pit of size 2m x 2m x 2m is excavated around the dead bore well and the casing pipe is fitted with a V-wire filter. The filter media is filled in the pit around the well. Storm water drains and roof top rainwater is then diverted into this pit. The rainwater gets filtered and enters the bore well through the V-wire filter. This scheme is adopted in 11 locations around the campus.