The Delhi government has cleared a Rs 1,950-crore project to tap drains carrying sewage from colonies not connected to the city sewers. Interceptor sewers to be used for tapping is seen by the government as a temporary solution to the problem of untreated water reaching the Yamuna. The government plans to lay sewers throughout the city in the long run.

The project is a toned down version of a Rs 3,150-crore proposal first mooted by the Delhi Jal Board in 2006. It involves laying 50 km of interceptors, 2-3 metres in diameter, to intercept 150 small drains discharging into three major drains in the capital