ProjectsKAUN?

Water supply and sewerage scheme

T.K. Halli–Vajarahalli transmission mainT.K. Halli to Bengaluru's 110 added villages

Cauvery Water Supply Scheme Stage V

Cauvery Stage V adds a 775 MLD treatment and transmission system from T.K. Halli and was planned to extend water and sewerage service to 110 villages added to Bengaluru. The water-supply system opened in October 2024 after successive deadline changes, but public updates through 2026 still described incomplete connections, sewerage works and legal obstacles at specific facilities. The main evidence gap is a current package-by-package completion, payment and deadline register covering the whole scheme.

Responsible agency

BWSSB

Bangalore Water Supply and Sewerage Board (BWSSB)

Affected current wards

Not attached to wards. The sources reviewed have no ward-level service map for the 110 villages.

Open accountability gap

The public record has no single, current completion target for the remaining sewerage and connection work.

Treatment capacity

775 MLD

The Stage V treatment plant at T.K. Halli, per the plant contractor's award announcement.

JICA loan

₹4,336 Cr

JPY 81,060 million (about ₹4,336 crore), per JICA. Its 2017 appraisal estimated the whole project at JPY 153,837 million; news reports give a ₹5,500–5,550 crore project cost.

Connections

~2 of 3.5 lakh

BWSSB data reported by The Hindu in October 2025. JICA's launch note set a 4 lakh target, so the target itself is not reconciled.

Villages served

110

Villages added to Bengaluru that the scheme is meant to serve, per JICA.

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Deadline and scope trail

NEWEST FIRST

  1. Legal and sewerage obstacles reported

    The Hans India, attributing information to BWSSB officials, reported land disputes affecting a Chokkanahalli reservoir and a Supreme Court case stalling a 25 MLD Varthur sewage-treatment plant. The report did not identify the case number or order, so those litigation details remain unverified in the primary court record reviewed.

    Attributed report
    The Hans India ↗

  2. Connection rollout remained incomplete

    The Hindu reported BWSSB data showing about 2 lakh connections against a 3.5 lakh target, including 87,000 added in the year after inauguration; it also reported that 24,000 applications citywide were held up by occupancy-certificate rules, without a Stage V breakup.

    Attributed report
    The Hindu ↗

  3. Stage V water-supply system inaugurated

    JICA recorded the unveiling at T.K. Halli on 16 October 2024. The same note said JICA anticipates the full opening of the project and the inauguration of wastewater treatment facilities.

    Verified record
    Japan International Cooperation Agency ↗

  4. July commissioning target announced

    BWSSB officials said physical work, gap filling and testing would finish by June-end and public benefit would begin in the first week of July.

    Attributed report
    The New Indian Express ↗

  5. May commissioning target missed

    BWSSB's chairman had publicly targeted commissioning by May 2024; June reporting said the launch moved first to June and then to the first week of July.

    Attributed report
    The New Indian Express ↗The New Indian Express ↗

  6. Six-month extension also passed

    The December 2023 report said the state had granted a six-month extension from July to December 2023, while BWSSB then expected infrastructure by March 2024 and commissioning by May 2024.

    Attributed report
    The New Indian Express ↗

  7. July 2023 completion date missed

    Later reporting said the state had extended the project's July 2023 deadline by six months.

    Attributed report
    The New Indian Express ↗

  8. Second JICA loan signed

    JICA announced a JPY 37,068 million loan, approximately ₹2,391 crore, for Phase 3 (II) water-supply and sewerage facilities.

    Verified record
    Japan International Cooperation Agency ↗

  9. T.K. Halli treatment-plant order announced

    Toshiba announced that BWSSB awarded SUEZ India and Toshiba Water Solutions the design, construction and commissioning work for the 775 MLD T.K. Halli plant, with seven years of operations and maintenance and a stated 30-month construction period.

    Attributed report
    Toshiba Infrastructure Systems & Solutions Corporation ↗

  10. First JICA loan agreement

    JICA's ex-ante evaluation records the Phase 3 (I) loan agreement and a project schedule beginning in January 2018.

    Verified record
    Japan International Cooperation Agency ↗

Known, contested, missing

Responsible agency

Verified record

BWSSB

JICA names BWSSB as executing agency.

AS OF 2017-12-01

Contractor

Attributed report

SUEZ India and Toshiba (T.K. Halli plant)

Toshiba's order announcement names the joint awardees and package scope. A consolidated primary contractor register for every Stage V package was not found in the public sources reviewed.

AS OF 2020-11-05

Accepted cost

Attributed report

No current official rupee total

JICA's 2017 appraisal estimated the project at JPY 153,837 million, including a JPY 81,060 million loan (about ₹4,336 crore). News reports cite a ₹5,500–5,550 crore project cost. No current official rupee total was found in the public sources reviewed.

AS OF 2026-01-14

Litigation

Attributed report

Two disputes reported; case details not public

A 2026 report attributes these obstacles to BWSSB officials, but the case title, number and court order were not found in the public sources reviewed.

AS OF 2026-01-14

Source ledger

  1. 01
    Ex-Ante Evaluation: Bengaluru Water Supply and Sewerage Project (Phase 3) (I)

    Japan International Cooperation Agency · 2017-12-01 · official

  2. 02
  3. 03
  4. 04
    110 villages to get Cauvery water only by May-end

    The New Indian Express · 2023-12-23 · news

  5. 05
    Expect delay with Cauvery Stage V project

    The New Indian Express · 2024-06-07 · news

  6. 06
    Unveiling of the JICA-funded 5th stage of Cauvery Water Supply Scheme

    Japan International Cooperation Agency · 2024-10-16 · official

  7. 07
  8. 08
    Legal hurdles delay Cauvery Stage V Project

    The Hans India · 2026-01-14 · news