Demand amid losses Total water supply in Delhi: 3,800 million litres a day (MLD) as per the survey by Centre for Science and Environment (CSE) in 2005-06 Per person water availability: 241 lpcd Demand for water in Delhi: 251 lpcd (as of 2011) of which 172 lpcd is for domestic purpose Water losses: 52% water is lost through leakages or is unaccounted for Net water availability: 1,824 MLD or 115 litres per person Total Demand: 3,973 MLD (2008-09) Demand and supply gap (after losses): 2,149 MLD Population served by the water supply network: 75 per cent Delhi's own water resources meet only 15% of the total demand 88% water requirement from surface water, including water from the Yamuna river, the Ganga and the Bhakra dam.12% from ground water 184 MLD water is sourced from the city's tubewells According to the Central Ground Water Board, in 1977, only 25 % areas in Delhi had saline water. Now almost 45% has brackish water, which is not recommended for domestic use Total water supply connections: 1,715,000 (according to Delhi Jal Board) Supply range: As little as 29 lpcd in Mehrauli zone in south Delhi to a high of 509 lpcd in the privileged residential zone of Delhi Cantonment and 462 lpcd in New Delhi Municipal Corporation area (as per CSE survey) Sewage generated by Delhi: 4,456 MLD (as per Central Pollution Control Board data; includes domestic and industrial sewage) Sewage generated from the city 656 MLD more than the water supplied Bhagirathi: 734 MLD (already operational as it feeds Sonia Vihar treatment plant) Renuka Dam on Giri (proposed): 1,399 MLD Lakhvar Vyasi and Kisau dams (proposed): 1,685 MLD DJB proposes to meet shortage of up to 757.08 MLD by developing a system of tubewells in flood plains of western Uttar Pradesh and Haryana Delhi's projected water requirement: 6,965.15 MLD (as per Delhi Development Authority's Master Plan-2021) Projected shortfall in supply: 3,406.87 MLD (if proposed projects not completed) Shortfall (after assuming Bhagirathi and other proposed projects including Renuka Dam start supply water): 1,745.07 MLD - Compiled by Anupam Chakravartty |