Overview
BWSSB Sewage Treatment Plant at Bellandhur in Bengaluru, India, is an operational facility managing municipal wastewater. It serves the city's sanitation infrastructure under India's environmental regulations.
The BWSSB Sewage Treatment Plant at Bellandhur is a key component of Bengaluru's wastewater management network, operated by the Bangalore Water Supply and Sewerage Board. Located in the Bellandhur area, this plant handles sewage from surrounding urban zones, contributing to the city's efforts to treat domestic wastewater before discharge. As an operational plant in India, it falls under the country's environmental protection framework, including the Water (Prevention and Control of Pollution) Act of 1974 and the National Green Tribunal guidelines. The plant's capacity and population served align with typical urban treatment facilities in Bengaluru. The treated effluent from this plant is discharged into local water bodies, ultimately reaching the Bellandur Lake, a prominent water body in the region. Bellandur Lake is part of the Koramangala-Challaghatta valley drainage system, which flows into the Dakshina Pinakini River and eventually into the Bay of Bengal. The plant plays a crucial role in reducing pollution loads in this sensitive urban watershed, supporting aquatic life and downstream water quality.
Environmental context
The plant discharges into the Bellandur Lake, a key water body in Bengaluru's drainage network. This lake is part of the Koramangala-Challaghatta valley, which drains into the Dakshina Pinakini River and ultimately the Bay of Bengal. The watershed supports diverse aquatic ecosystems and is important for local biodiversity, though it faces pressures from urbanization and industrial runoff. Effective treatment at this plant helps mitigate eutrophication and protect downstream habitats.
Frequently asked questions
The plant is located in the Bellandhur area of Bengaluru, Karnataka, India. It serves the surrounding urban neighborhoods as part of the city's wastewater infrastructure.
It serves a densely populated urban area in Bengaluru. Indian sewage treatment plants of this scale typically serve tens of thousands to hundreds of thousands of residents.
The treated effluent is discharged into local drainage channels that flow into Bellandur Lake, a major water body in the region. From there, water moves through the Koramangala-Challaghatta valley system to the Dakshina Pinakini River and eventually the Bay of Bengal.
The plant operates under India's Water (Prevention and Control of Pollution) Act, 1974, and is subject to standards set by the Central Pollution Control Board (CPCB) and the Karnataka State Pollution Control Board (KSPCB). These regulations mandate treatment levels for discharge into inland surface waters.
Most sewage treatment plants in Bengaluru use biological treatment processes such as activated sludge or sequencing batch reactors. Tertiary treatment is increasingly adopted to meet stricter discharge standards, especially for plants discharging into sensitive water bodies like Bellandur Lake.
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