According to Bureau of Indian Standards (BIS) code 1172-1993 the per capita water requirement for the cities with habitations more than 100,000 with full flushing systems require 150-200 Liters per day. This may come down to 135 Liters per capita for Economically Weaker section of the society. In this context, Chandigarh is providing more water per capita than required. Water demand based on the current population (census 2011) is around 426.50 MLD. This includes 158.25 MLD for domestic consumption, 29.09 MLD for commercials/ industrial demand, 46.15 MLD for community/ institutional demand, 20.07 MLD for standpost lavatory blocks and a wastage of water nearly 15% stands at 38.04 MLD. In addition horticultural water demand is 134.90 MLD.