BWSSB floats tenders to supply ultra-pure treated water for Peenya Industries

BWSSB has floated tenders to supply 4 MLD of tertiary treated water from Nagasandra STP to Peenya Industrial Area, marking Bengaluru’s first dual-pipeline system exclusively for industrial, non-potable use.

Sewerage Board (BWSSB) has floated tenders to supply ultra-pure treated water to the Peenya Industrial Area, regarded as the largest industrial hub in Asia.

Under the project, BWSSB will supply 4 million litres per day (MLD) of treated water from the Nagasandra Sewage Treatment Plant (STP) to industries in Peenya. While the existing STP output already meets National Green Tribunal (NGT) standards, BWSSB has decided to add an additional tertiary treatment stage to further enhance water quality before industrial use.

BWSSB Chairman V. Ram Prasath Manohar said the additional treatment will make the water “ultra-pure,” improving user acceptance and increasing its shelf life for industrial applications. To achieve this, BWSSB will establish a new tertiary treatment plant at Nagasandra STP.

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The board has already tested this model through a pilot tertiary treatment plant of 70 KLD capacity at Kadubeesanahalli STP. The same technology will now be replicated at Nagasandra. The tertiary treatment facility will be developed under a Public Private Partnership (PPP) model, and BWSSB is currently searching for a suitable private partner. Once finalised, the plant is expected to become operational within three to four months.

In parallel, BWSSB will invest around ₹27 crore to build critical infrastructure for water distribution. This includes laying a 27-km distribution pipeline from the Nagasandra STP to Peenya industries, constructing a Sump-cum-Pump House, and setting up an overhead tank with a capacity of 5 lakh litres.

A key feature of the project is the introduction of a dual piping system, ensuring that treated wastewater meant for non-potable industrial use does not mix with drinking water supply. BWSSB officials say this is the first such project of its kind in Bengaluru.

Explaining the broader vision, Mr. Manohar said BWSSB is working with the motto “Cauvery for Homes, Ultra Pure Treated Water for Industries.” He added that the board is open to extending similar partnerships to other industrial clusters in the city to reduce dependence on fresh Cauvery water.

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