Chandannagar Khalisani Chinsurah Highly Wastewater Treatment Plant, West Bengal

Chandannagar Khalisani Chinsurah Highly is a wastewater treatment plant located in Chandannagar, West Bengal, within the Kolkata Metropolitan Area. The plant serves a population of approximately 121,331, classifying it as a medium-to-large agglomeration under Indian urban wastewater management standards. It is situated in the Hooghly district, near the banks of the Hooghly River. As an operational facility, the plant is expected to comply with India's Central Pollution Control Board (CPCB) discharge standards, which mandate secondary treatment for municipal wastewater. For agglomerations of this scale, tertiary treatment may be required if discharging into sensitive water bodies. Typical plants in this region employ activated sludge or oxidation pond systems. The treated effluent likely discharges into the Hooghly River, a distributary of the Ganges, which flows into the Bay of Bengal. The Hooghly River supports diverse aquatic life and is a critical water source for the region. The plant plays a key role in reducing pollution loads to this ecologically significant river system.

The plant's treated effluent likely enters the Hooghly River, which flows through West Bengal and ultimately drains into the Bay of Bengal. The Hooghly is a vital waterway supporting fisheries, agriculture, and biodiversity, including the Gangetic dolphin. Downstream, the river forms the Sundarbans delta, a vast mangrove ecosystem that provides critical habitat for numerous species. Effective wastewater treatment is essential to protect these downstream environments from nutrient pollution and pathogens.