NEW DELHI, Oct. 15 -- Delhi has completed two new water treatment units at a combined cost of Rs.850 crore, but the added treatment capacity is yet to translate into increased water supply because the city has no additional raw water, people familiar with the matter said.

Together, the two plants in Dwarka and Chandrawal can process 155 million gallons of drinking water a day, nearly 60% of the city's 250 MGD water demand-supply deficit.

Delhi gets most of its water from nine treatment plants with a combined capacity of 864 million gallons per day (MGD). Another 136 MGD is sourced from tubewells and borewells.

A senior official of the Delhi Jal Board said the Dwarka Phase-2 plant in south-west Delhi was ready but unlikely to become ope...