“Since two channels of the drain are working at present, the sewage water flows back and gushes into the houses of people living in residential colonies in the low-lying areas of Nizamuddin East and West, Siddharth Nagar Extension, Pant Nagar and Jangpura and even a three to four hours’ rain can create mess for nearly 1.5 lakh Delhiites living in this belt,” lament residents.