STP Cossipore Chitpore - South Dumdum Wastewater Treatment Plant, West Bengal

STP Cossipore Chitpore is a major wastewater treatment facility located in Bangur, South Dumdum, within the Kolkata Metropolitan Area in West Bengal, India. The plant serves a population of approximately 300,654, classifying it as a large agglomeration under Indian urban wastewater management standards. As a large-scale plant, it is expected to provide at least secondary treatment under India's environmental regulations, which align with the National River Conservation Plan and the Water (Prevention and Control of Pollution) Act, 1974. The plant's designed capacity is 1.00 million liters per day, supporting the densely populated urban region. The treated effluent from the plant likely discharges into the Hooghly River, a distributary of the Ganges, which flows into the Bay of Bengal. This river system is ecologically significant, supporting diverse aquatic life and providing water for millions. The plant plays a crucial role in reducing pollution loads in this sensitive riverine environment.

The plant's treated wastewater likely enters the Hooghly River, a major distributary of the Ganges, which flows through the Sundarbans delta before reaching the Bay of Bengal. This region supports a rich ecosystem, including the Sundarbans mangrove forest, a critical habitat for the Bengal tiger and numerous aquatic species. The plant helps mitigate nutrient and pathogen pollution, protecting downstream water quality and biodiversity.