West Bengal has strengthened its push for river rejuvenation and urban sanitation with the operationalisation of two major sewerage treatment projects under Phase II of the Namami Gange Mission during the financial year 2025–26. The projects aim to significantly reduce the flow of untreated wastewater into the Ganga River, officials said.
The first project, commissioned at Maheshtala in South 24 Parganas district, has been developed at an estimated cost of ₹286.97 crore under the Hybrid Annuity Model. It includes an Interception, Diversion and Treatment system along with a modern Sewage Treatment Plant (STP) of 35 MLD capacity, catering to Maheshtala and adjoining densely populated areas.
The second project, completed in Jangipur and Raghunathganj in Murshidabad district, involves two STPs with a combined capacity of 13 MLD and an 11.38-km sewerage network. Built at a cost of about ₹68.47 crore, it has been executed under the Design–Build–Operate–Transfer model. Both projects use Sequential Batch Reactor technology and comply with National Green Tribunal norms. According to the National Mission for Clean Ganga, the initiatives will improve water quality, enhance public health and support sustainable urban development. In Kolkata, the commissioning of these projects could boost demand for advanced water-treatment technologies, civil construction services and environmental engineering firms operating in Kolkata, while reinforcing the city’s role as a hub for infrastructure-led growth in eastern India.