The Brihanmumbai Municipal Corporation (BMC) has completed work on the first phase of the underground sewage tunnel under the ongoing Mithi River Rejuvenation Project to improve the water quality of Mithi River. An event to mark the ‘breakthrough’ of the first phase of the sewage tunnel was held at Kurla Park on Tuesday.

The tunnel is being constructed from Bapat nullah and Safed Pul nullah to the Dharavi Sewage Treatment Plant. The total length of the underground sewage tunnel is 6.70 km, with an average depth of about 15 metres. Of this, the first phase covered 1.8 km. The entire work will be completed in three phases. The second phase of the project will be taken up at Kanakia Zillion (SCLR Junction), Sahar-Kurla Road and the third phase at Bapat nullah. The project will have a total capacity to transport 400 million litres of sewage per day and currently, it will handle 168 million litres of non-monsoon flow per day.