120 Percolation Wells
Percolation wells across the campus capture rainwater and send it back into the ground, recharging the aquifer our borewells depend on.
Bengaluru’s groundwater is under severe stress, and construction is steadily sealing the soil that once let rain soak in. A percolation well gives that rainwater a way back into the aquifer.
- Each well is about 12 feet deep and 4 feet wide, built by hand.
- Concrete rings line the well, with pebble packing for stability and recharge.
- A perforated concrete slab, with a steel safety mesh beneath, closes the top.
- Each well can hold about 4,270 litres of rainwater at a time.
- Well sites are chosen using GIS, contour and hydrology studies of the campus.
Raises the water table
Replenishes aquifers so nearby wells don’t run dry.
Reduces flooding
Absorbs excess rainwater that would otherwise waterlog low-lying areas.
Low maintenance
Once built, the wells work passively, with de-silting before each monsoon.
Tapping the Rain That Falls on Campus
Sri Sathya Sai Institute of Higher Medical Sciences, Whitefield has made several Rainwater Harvesting initiatives over the years to tap and utilize the Rainwater falling on the campus.
1. Rainwater Harvesting Lake: A 25,00,000-liter man-made rainwater harvesting lake has been created in the year 2012 to capture majority of the water falling on the hospital terrace and roads on the right-hand side of the hospital and enrich the ground water. The main borewell supplying hospital is situated in this year and the yield has been very good from this borewall post this initiative.
2. Rainwater Harvesting tank for HVAC plant: Rainwater falling on the service block is captured into a 2,00,000-liter tank which supplies water for the HVAC plant. This ensures water saving and also provides soft water for this purpose.
3. Rainwater borewell recharge project has been done for two borewells on left-hand side of the hospital capturing water falling on the roads on this side.
On the whole majority of the rainwater falling on campus is utilized.