India, April 11 -- The Public Works Department (PWD) has started work on the construction of an underground water storage sump with a capacity of 6.75 lakh litres in southwest Delhi, aimed at addressing persistent waterlogging in areas such as Dwarka and along the Urban Extension Road-II (UER-II) corridor.

According to officials, the project involves the construction of an underground tank equipped with inlet and screening chambers, along with the laying of a 1,000 mm diameter ductile iron pipeline connecting Jharoda village to the Mungeshpur drain.

The project has been sanctioned at an estimated cost of approximately Rs.9.63 crore and is expected to be completed within four months from the start of work. Officials said the civil compon...