Finally, there's incontrovertible evidence to confirm what was always known to be behind the capital's water woes: illegal usage and leakage. Official supplier Delhi Jal Board (DJB) has calculated that the total water lost in the city is about 260 million gallons per day (mgd). Of this, 15 to 20 per cent goes down the drain (spillage). The rest is untraceable.

As per the master plan for 2001, while south zone's water demand is 36 mgd