Water quality · Bengaluru
Borewell water TDS in Rajajinagar: is it safe to drink?
A plain-English read on Rajajinagar's water — how hard it typically is, what that means for TDS and drinking safety, and how to check your own supply.
Rajajinagar typically has hard water
Homes around Rajajinagar draw a mix of Cauvery supply and borewell groundwater. TDS often sits above the ideal 500 ppm mark; a test is worth it.
This is a directional, area-level signal — not a measurement of your building's water. Boreholes vary street to street.
What TDS is safe to drink? (BIS limits)
| TDS (ppm) | What it means |
|---|---|
| Under 300 | Excellent — soft, good-tasting. |
| 300 – 500 | Good — within the BIS acceptable limit. |
| 500 – 2000 | Above the acceptable limit; BIS permits it only where no better source exists. Hard, often tastes off — filtering helps. |
| Over 2000 | Beyond the BIS permissible limit — not recommended for drinking without treatment. |
Source: BIS IS 10500:2012 drinking-water specification. Total hardness limits are 200 mg/L (acceptable) and 600 mg/L (permissible).
Check your own Rajajinagar water
Area signals only get you so far — get a read for your specific home, then see the right filtration if you need it.
Rajajinagar water — frequently asked
Is borewell water in Rajajinagar safe to drink?
Homes around Rajajinagar typically have hard water from a mix of Cauvery supply and borewell groundwater. TDS often sits above the ideal 500 ppm mark; a test is worth it. Hardness and TDS are directional area signals, not a measurement — test your own supply before deciding, and treat or filter if it reads above the BIS acceptable limit.
What TDS level is safe for drinking water in India?
Under the BIS standard (IS 10500), a TDS of up to 500 ppm is acceptable for drinking water. Between 500 and 2000 ppm is permissible only where no better source exists; above 2000 ppm is not recommended for drinking. By palatability, under 300 ppm is excellent and 600–900 ppm is only fair.
Do I need an RO purifier in Rajajinagar?
If your supply tests above ~500 ppm TDS or runs hard, an RO or a hardness-appropriate filter helps with taste, scaling, and appliance life. In hard-water areas an RO is often worthwhile — but confirm your reading first; over-purifying already-soft water isn't necessary.
Why is Rajajinagar water hard?
It is a mix of Cauvery supply and borewell groundwater. Bengaluru's Cauvery-supplied core runs softer, while borewell-dependent peripheral and IT-corridor zones draw hard groundwater with higher dissolved minerals.