Proposed lake buffer zone reduction sparks environmental concerns in Bengaluru

Bengaluru's environmentalists have raised alarm over the state cabinet’s approval of the Tank Conservation and Development Authority (Amendment) Bill, 2025. The bill proposes reducing lake buffer zones to as little as three metres, potentially paving the way for commercial and industrial activities near ecologically sensitive areas.

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Several activists have criticised the move, warning that it could trigger a surge in encroachments and severely damage the city’s fragile wetland ecosystems. With Bengaluru having lost nearly 95% of its original wetlands, concerns are mounting that the remaining 5% are also under threat. The buffer zones, they argue, are essential to maintaining ecological balance by supporting flood control, groundwater recharge, and biodiversity.

Environmental groups argue that the bill prioritises real estate interests over ecological sustainability and public safety. They claim that this legislation could legitimize encroachments, especially in areas already facing severe urban pressure. Concerns were also raised over potential violations of central environmental regulations and National Green Tribunal (NGT) directives, which mandate protection of buffer zones.

Activists warn of increased risk of urban flooding, water scarcity, and loss of biodiversity if the proposal is enacted. They have called on the government to withdraw the amendment and instead enforce existing environmental protections, restore degraded lakes, and penalise encroachers to safeguard Bengaluru’s remaining wetlands.