BWSSB to implement IISc-developed zero bacteria technology in apartment STPs

NT Correspondent

Bengaluru: The Bangalore Water Supply and Sewerage Board (BWSSB) is exploring the implementation of Zero Bacteria technology, developed by scientists at the Indian Institute of Science (IISc), to enhance the quality of wastewater treated in apartment sewage treatment plants (STPs), BWSSB Chairman Ram Prasath Manohar said on Tuesday. Speaking at the IGSTC (Indo-German Science and Technology Centre) Bilateral Workshop 2025 at IISc, he highlighted the ongoing efforts by the water board to promote sustainable groundwater management in Bengaluru.

To achieve this, a task force comprising IISc, the Central Groundwater Authority, and BWSSB has been established to monitor borewells, he said. Advanced artificial intelligence technology is being employed to prevent groundwater misuse, assess current levels and develop strategies for efficient utilisation during the summer months, Manohar added. Emphasising the importance of water security, he underscored the need for innovative solutions to address future challenges. According to him, Bengaluru's apartments generate significant quantities of wastewater, and following the NGT order, most complexes have installed STPs.

While treated water from these plants is commonly used for gardening, cleaning, and even resale, some developers—through CREDAI—have raised concerns about water quality. "To address these concerns, BWSSB is considering the adoption of IISc's Zero Bacteria technology, which produces water of superior quality compared to the conventional one."