The Kolkata Municipal Corporation (KMC) has sanctioned a substantial investment of Rs 581 million for the comprehensive overhaul of the city’s sewerage infrastructure.
This initiative aims to enhance the city’s resilience against urban flooding, particularly during the monsoon season, and to improve the overall quality of life for its residents. Kolkata’s existing sewerage system, largely comprising century-old brick sewers, has long struggled to cope with the challenges posed by rapid urbanisation, increased rainfall, and climate change. The city’s drainage capacity has been further compromised by heavy siltation, undersized infrastructure, and the encroachment upon natural water bodies. These factors have led to widespread waterlogging, disrupting daily life and causing significant economic losses.
The KMC’s Rs 581 million investment is part of a broader strategy to modernise the city’s drainage and sewerage systems. This includes the refurbishment of critical infrastructure, the installation of advanced pumping stations, and the implementation of innovative technologies to enhance stormwater management. A cornerstone of the KMC’s plan is the refurbishment of the 148-year-old Town Outfall Sewer Line, which stretches from Moulali to the Palmer Bridge drainage pumping station. This brick sewer, one of the oldest functioning lines in the world, has been heavily silted and structurally compromised over time. The proposed upgrades aim to desilt and reinforce the sewer, increasing its capacity to handle stormwater from over 30 wards, thereby providing relief to approximately 1 million residents.
Additionally, the KMC plans to modernise several major drainage pumping stations, including the Palmer Bridge station. This involves the installation of high-capacity pumps and the construction of deeper sumps to facilitate the swift removal of stormwater. These enhancements are expected to significantly reduce the duration and severity of waterlogging in affected areas. In line with contemporary urban management practices, the KMC is integrating technology into its sewerage and drainage operations. The introduction of an IT-based asset management system will enable real-time monitoring and maintenance of infrastructure, improving operational efficiency and response times during emergencies. Furthermore, the KMC is exploring the use of treated sewage water for non-potable purposes, such as irrigation and road cleaning, to conserve potable water resources and promote sustainability.
This initiative underscores the KMC’s commitment to creating a sustainable, climate-resilient, and equitable urban environment. By investing in modern infrastructure and adopting innovative solutions, the KMC aims to mitigate the adverse impacts of waterlogging, enhance public health, and foster economic growth. The project also aligns with broader national goals of promoting smart cities and sustainable urban development. As Kolkata continues to grow and evolve, the KMC’s proactive approach to upgrading its sewerage and drainage systems sets a precedent for other cities grappling with similar challenges. Through these concerted efforts, Kolkata is taking significant strides towards becoming a model of urban resilience and sustainability.
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Kolkatas Rs 581 Million Sewer Overhaul to Combat Waterlogging