Water quality · Bengaluru
Borewell water TDS & hardness by Bengaluru area
How hard the water runs across Bengaluru — and what it means for TDS and drinking safety. Borewell-fed peripheral zones run hardest; the Cauvery-supplied core runs softer. Pick your area for the details.
very hard water
hard water
moderately hard water
Bands are directional, area-level signals from Bengaluru zone groundwater studies (CGWB district profile, peer-reviewed zone studies, BWSSB Cauvery-stage data) — not a measurement of your building. Sources compiled 2026-05-18.
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Borewell TDS in Bengaluru — frequently asked
Which Bengaluru areas have the hardest borewell water?
Borewell-dependent peripheral and IT-corridor zones — Whitefield, Bellandur, Sarjapur Road, Electronic City, Bommasandra and Yelahanka — typically run very hard. The Cauvery-supplied core (Jayanagar, Malleshwaram, Indiranagar) runs softer.
What TDS level is safe for drinking water in India?
Under BIS IS 10500, up to 500 ppm TDS is acceptable for drinking water; 500–2000 ppm is permissible only where no better source exists; above 2000 ppm is not recommended without treatment.
Are these TDS readings exact for my home?
No — these are directional, area-level signals from zone groundwater studies, not a measurement of your building. Boreholes vary street to street. Run the free water-quality check for a read on your own supply.