The Delhi Jal Board (DJB) has completed the Delhi Interceptor Sewerage Project (ISP). As per the independent assessment conducted by Delhi Technological University and the Delhi Jal Board, the sewage trapping part of ISP has been completed. The project has an estimated cost of Rs 24.54 billion.
The scope of work involved cutting off the sewage flowing into Yamuna through building trunk drains and treating it before it enters the river and intercepting the smaller sewers by the trunk sewer line running along the large drains and blocking them from meeting the main drains while diverting the raw sewage to sewage treatment plants.