Senior Delhi Jal Board officials have said that the city will need to expand its sewage treatment capacity, considering its “population growth, urban expansion, and redevelopment of residential and commercial areas”, according to a Delhi Jal Board (DJB) document, accessed by The Indian Express. Different reports and data released by the government have indicated that the Capital has made only incremental progress in closing its sewage generation-treatment deficit and the gap now risks widening again.

A progress report by the Environment department shows that utilisation of installed treatment capacity has risen only marginally over the past three years — from 74.2% in 2022 to 79.16% in 2024 and 80.9% this year. Despite this improvement, the city continues to face a shortfall of around 174

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