What counts as hard water?
Water with TDS above 300 ppm is classified as hard. Above 500 ppm is considered very hard or extreme. In both cases, ordinary bathroom cleaners will not adequately remove the mineral deposits these water sources leave behind.
The below data is compiled from municipal water reports, groundwater surveys, and water quality testing across major Indian cities. All values are representative ranges — TDS varies by locality, season, and source.
City-by-city TDS data
| City | TDS Range | Classification |
|---|---|---|
| Jodhpur | 600–900 ppm | EXTREME |
| Jaipur | 500–700 ppm | EXTREME |
| Rajkot | 500–700 ppm | EXTREME |
| Agra | 500–700 ppm | EXTREME |
| Gurugram | 450–650 ppm | EXTREME |
| Meerut | 450–650 ppm | EXTREME |
| Delhi | 400–600 ppm | EXTREME |
| Ahmedabad | 400–600 ppm | EXTREME |
| Faridabad | 400–600 ppm | EXTREME |
| Kanpur | 400–600 ppm | EXTREME |
| Ludhiana | 400–600 ppm | EXTREME |
| Noida | 380–580 ppm | EXTREME |
| Surat | 350–550 ppm | HIGH |
| Ghaziabad | 350–550 ppm | HIGH |
| Amritsar | 350–550 ppm | HIGH |
| Patna | 350–550 ppm | HIGH |
| Lucknow | 350–500 ppm | HIGH |
| Vadodara | 350–500 ppm | HIGH |
| Varanasi | 300–500 ppm | HIGH |
| Nagpur | 300–500 ppm | HIGH |
| Bengaluru (borewell) | 300–600 ppm | HIGH |
| Indore | 300–500 ppm | HIGH |
| Chandigarh | 250–400 ppm | HIGH |
| Bhopal | 250–400 ppm | HIGH |
| Hyderabad | 200–400 ppm | MODERATE |
| Pune | 200–400 ppm | MODERATE |
| Chennai | 200–350 ppm | MODERATE |
| Mumbai | 150–300 ppm | MODERATE |
| Kolkata | 150–250 ppm | MODERATE |
| Dehradun | 150–300 ppm | MODERATE |
What high TDS does to your home
In EXTREME-rated cities, mineral deposits form on shower glass within days of cleaning. The buildup is rapid enough that surfaces develop a permanently etched appearance within months if not treated with an acid-based formula.
In HIGH-rated cities, buildup forms within one to two weeks. Standard cleaners provide minimal improvement. An acid formula is necessary for effective removal.
In MODERATE-rated cities, standard descalers work with some effort. However, borewell water in even "moderate" areas can spike to HIGH levels during dry seasons.
The borewell exception
Many cities — particularly in Bengaluru, Hyderabad, and Pune — show moderate municipal water TDS, but a significant proportion of buildings use borewell water for non-drinking purposes including bathrooms. Borewell TDS in these cities regularly exceeds 500–800 ppm.
If you're in a nominally moderate city but see heavy scale on your glass, your building likely draws from a borewell. The problem is just as severe.
Check your specific pincode
City-level data is a starting point. TDS varies significantly by locality — sometimes by 200+ ppm between neighbourhoods in the same city.
Use our pincode TDS checker on the homepage for a more specific estimate for your area.
If you can see white marks on your shower glass, your water is hard enough that Fighter will make a measurable difference.