Waste water generated in the entire campus is treated at 3 sewage treatment plants of combined capacity of 55 lakh litres/ day, 2 sullage treatment plants of capacity 3.2 lakh litres/ day
The three Rs; Reduce, Recycle, Reuse is applied for management of the water resource at Manipal. Treated water from the sullage treatment plant is re-circulated to the flush system. Treated water from the other plants is used for gardening and arboriculture. Dried sludge generated as a by-product is used as manure for gardens.