Staff Reporter

65 MGD water will be released and it is expected to reach residents in South, South West, East and North East Delhi.

NEW DELHI: After a long wait, water will finally be released from the 140 MGD Sonia Vihar Water Treatment Plant on a trial basis from Tuesday. To begin with about 65 MGD water would be released and it is expected to reach over a million residents in South, South West, East and North East Delhi.

The plant, which has been running behind schedule by over three years, had been undergoing flushing since May 21 after Uttar Pradesh had released about 70 cusecs of water for the same.

This was followed by release of another 35 cusecs on June 1, 70 cusecs on June 10 and 300 cusecs on June 28.

The Rs. 750-crore Sonia Vihar Project comprises water treatment plant built at a cost of Rs. 188 crores, raw water conduit from Muradnagar up to the plant which was built by DJB through UP Jal Nigam at a cost of Rs. 158 crores, a network of transmission and feeder lines of 84 kms laid in three phases at a cost of Rs. 230 crores, and underground reservoirs which are at different stages of commissioning.

The release of water, DJB said, is being done after a careful analysis of the command area of the existing WTPs and the hydraulics of the distribution network. While around 65 MGD will be released in the first phase, further releases would be carried out in a controlled manner in the coming months. It said all the existing underground reservoirs, transmission and feeder mains and other peripheral and distribution network are being comprehensively tested so that the ability to absorb the additional quantum of water in terms of pumping hours, supply duration and pressure is thoroughly utilised.

Stating that the release of additional quantity of water with increased pressure can temporarily result in rise in turbidity level in the water received by the consumers, the DJB said this was usual outcome of the commissioning of a new WTP. While the water would be potable, it has advised consumers to keep their taps running to drain out the water received initially and use it once the turbidity level has receded.

The commissioning of the plant, capable of treating 635 million litres of water per day, and its network and interlinking with the existing system will not only help in better water supply coverage and distribution in South and East Delhi, it would also gradually result in improved supplies in other areas through displacement. When fully commissioned, the plant, spread over 35 acres, will cater to about four million people in Delhi.

This 90-million litre storage capacity plant is also supposed to have less than 1.5 per cent wastage of water as against 8 per cent in conventional plants with minimal wastage of chemicals in treatment process.