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City Water PictureCityKarnataka

Bengaluru water picture

Published availability is Scarcity for 2025 and Absolute scarcity for 2050.

The two official published periods carry different water-availability classifications.

Where supplied water comes from

  • Cauvery RiverCauvery Water Supply Project, Phases I-V

Groundwater context

Before and after monsoon depth band
2–5 metres below the ground surface
Exact published band: 2 to 5 mbgl · 2023-24

Latest groundwater-quality evidence

No station-level numeric quality result is published on this page. The reviewed samples do not establish city-wide or tap-water quality.

Official institutions and periods

NITI Aayog; Central Ground Water Board; Department of Information and Public Relations, Government of Karnataka

2021-22 · 2022-23 · 2023-24 · 2025 · 2050 · 2024 assessment · 31 March 2026; reporting the Karnataka Budget 2026-27

This does not establish today’s household supply, pressure, continuity or tap-water safety.

See the full evidence and limitations

Where supplied water comes from

These relationships come from official utility or government publications. JalWater keeps operating, historical, proposed, and unproven evidence separate.

Operating relationships in reviewed official evidence

Cauvery River · Cauvery Water Supply Project, Phases I-V

Operating in the reviewed official evidence · Karnataka Budget 2026-27; article published 31 March 2026

River

The Government of Karnataka states that Bengaluru is supplied through five phases of the Cauvery Water Supply Project.

Authority
Government of Karnataka and Bangalore Water Supply and Sewerage Board
Geographic scope
Bengaluru city supply context described by the Government of Karnataka. The source does not establish supply to every property, daily continuity, pressure, or a neighbourhood-level allocation.
Evidence locator
Bengaluru infrastructure section; paragraph beginning 'To provide drinking water to about 1.4-crore people'
Limitation
This establishes the operating source system in the reviewed 2026 government record. JalWater does not reproduce the reported quantity, calculate source shares, or infer household delivery.

Source: Department of Information and Public Relations, Government of Karnataka · State Budget Focuses on Growth, Jobs, Infra Development. Open official source

Official proposals — not operating evidence

Cauvery Water Supply Project Phase VI · Cauvery Water Supply Project Phase VI

Official proposal — not operating evidence · Karnataka Budget 2026-27; article published 31 March 2026

River

The Government of Karnataka describes a sixth phase of the Cauvery project as a planned augmentation with JICA assistance.

Authority
Government of Karnataka
Geographic scope
Future Bengaluru water-supply planning described by the Government of Karnataka.
Evidence locator
Bengaluru infrastructure section; paragraph beginning 'To provide drinking water to about 1.4-crore people'
Limitation
This proves planned-project status only. It must not be presented as an operating source or as water currently available to households.

Source: Department of Information and Public Relations, Government of Karnataka · State Budget Focuses on Growth, Jobs, Infra Development. Open official source

Groundwater evidence

Before and after monsoon depth band

2–5 metres below the ground surface

2 to 5 mbgl · 2023-24

CGWB official extraction category: Over-exploited · 2024 assessment

This is a groundwater-resource category. It is not a drinking-water-quality or household-supply conclusion.

Published 2025 classification

Scarcity [500-1000 m3]

Published 2050 classification

Absolute scarcity [<500 m3]

JalWater preserves the official periods and bands. It does not invent intermediate years or infer a trend.

Current condition and water quality

Current source condition

JalWater has not verified a stable official current-condition feed for this city.

Groundwater-quality samples

Reviewed station records are dated 2021–2023 and do not represent city-wide or municipal tap-water quality. Their numeric values are not published here.

Official sources and limitations

Official publications used

  • Department of Information and Public Relations, Government of Karnataka

    State Budget Focuses on Growth, Jobs, Infra Development · 31 March 2026; reporting the Karnataka Budget 2026-27

    Bengaluru infrastructure section; paragraph beginning 'To provide drinking water to about 1.4-crore people'

    Open official source

What is not verified

  • No stable official current-condition feed has been verified for this city.
  • No reviewed evidence establishes today's household supply, pressure, continuity, or tap-water safety.
  • No reviewed evidence establishes a source share for every neighbourhood or property.
  • No rainfall or reservoir-status feed is used to change the published classifications.
  • Groundwater-quality station values are excluded from the public release candidate.

Publication method

JalWater publishes independently written factual summaries with prominent attribution and links to official primary sources. It does not reproduce protected tables, images, long passages, raw datasets, or source documents.

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