Cauvery Phase 6 project to boost Bengaluru’s water supply by 500 MLD from KRS reservoir

The Bengaluru Water Supply and Sewerage Board (BWSSB) plans to draw 6 TMC of water annually from the Krishna Raja Sagar (KRS) reservoir in Srirangapatna to strengthen water access in Bengaluru’s outskirts and fast-growing taluks.

In a major step toward addressing Bengaluru’s growing water demand, the Bengaluru Water Supply and Sewerage Board (BWSSB) has proposed the Cauvery Phase 6 Project, designed to supply an additional 500 million litres of water per day (MLD) to the city’s expanding outskirts.

The project plans to draw 6 TMC (thousand million cubic feet) of water annually from the Krishna Raja Sagar (KRS) reservoir in Srirangapatna, approximately 140 km from Bengaluru. This expansion will benefit peripheral regions including Devanahalli, Hoskote, Anekal, Bidadi, and Nelamangala, areas witnessing rapid residential and industrial growth.

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According to BWSSB officials, the project’s Detailed Project Report (DPR) has been submitted to the state government for approval. The estimated total project cost stands at around ₹5,177 crore, with land acquisition forming a major component of the expenditure.

The scheme requires 130 acres of land, out of which 85 acres belong to the government and 45 acres are privately owned. The compensation rate for private landowners is projected at ₹25 lakh per acre, bringing the land acquisition cost to around ₹380 crore.

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The land is spread across four major locations:

•    KRS, Srirangapatna: 24 acres of government land and 6 acres of private land (30 acres total)
•    Katteri Village: 31 acres of government and 19 acres of private land (50 acres total)
•    Ramanagara: 5 acres of government and 20 acres of private land (25 acres total)
•    Kengeri: 25 acres of government land, no private land (25 acres total)

Once approved, the project will ensure a more reliable and sustainable water network for Bengaluru’s peripheral zones, complementing the existing Cauvery Phases 1–5, which currently draw water from Torekadanahalli in Malavalli taluk.