The short answer: It depends on your building. Core Pune runs on dam supply and is usually moderate, but borewell and tanker water across the newer townships is genuinely hard, often above 500 ppm TDS. That calcium and magnesium coats the strand, roughens the cuticle and leaves the scalp tight and flaky, so hair snaps and dries faster. A chelating shampoo lifts those minerals off and rinses them away, which is where deSal fits.
Moved to Pune and suddenly finding more hair on the comb and a scalp that feels tight after every wash? Do not blame your shampoo yet. Check the water first. Here is how to tell, and what actually works.
Is Pune water hard? It splits by source
Pune has two water stories. The core city (Kothrud, Aundh, Shivajinagar, Deccan, Camp) drinks dam supply from Khadakwasla, Panshet and Varasgaon, which usually lands in the moderate range, roughly 200 to 500 ppm TDS. Most people tolerate that fine.
The trouble is the borewell and tanker belt: Hadapsar, Mundhwa, Kharadi, Wagholi, and the PCMC townships around Wakad, Hinjewadi and Ravet. That is groundwater, and Central Ground Water Board data for the Pune district records bores well past the desirable limit, with some pockets crossing 800 ppm and higher. On the WHO scale (soft 0 to 60, moderately hard 61 to 120, hard 121 to 180, very hard above 180 mg/L CaCO3), most of that belt sits firmly in "very hard".
That is why a Kothrud flat and a Wakad high-rise, two friends comparing notes, can behave nothing alike. Even neighbours on a single road diverge, since tanker sourcing and bore depth shift week to week.
Does hard water actually damage hair?
Yes, and it is measurable. In controlled testing, hair soaked in hard water showed lower tensile and breaking strength than hair in distilled water, roughly 234 versus 255 (PMC6028999, P=0.001). A separate study at a lower hardness, around 212 ppm, found no significant difference (PMC3927171), which tells you the real damage kicks in at genuinely hard levels, exactly what Pune's borewell water delivers.
The mechanism is simple. Calcium and magnesium bind to the hair and settle as a mineral film. That film roughens the cuticle so strands feel dry, frizzy and brittle and snap more easily. It also blocks lather and stops conditioner absorbing, so every wash compounds the last. This is breakage and dullness, not shedding from the root. Hard water makes normal daily fall look and feel far worse than it is.
Why the scalp feels tight and flaky
The same minerals leave the scalp too. Hard water plus shampoo forms an insoluble scum that sits at an alkaline pH, while a healthy scalp is acidic at about 4.5 to 5.5. Push the scalp alkaline and you disrupt the acid mantle, which is why it feels tight, itchy and flaky within weeks of moving. An alkaline scalp is also friendlier to Malassezia, the yeast linked to dandruff and flaking (PMC2923939, British Journal of Dermatology). Most shampoos do not help here, because in an analysis of over a hundred shampoos most ran too alkaline (PMC4158629); an acidic wash keeps the cuticle flat and cuts friction.
To be clear, this is a scalp point, not a facial-skincare one. If your face feels dry after a Pune bath, that is a barrier and moisturiser conversation with a dermatologist, not something a shampoo touches.
How to check your own water in five minutes
No lab required to begin. Drop a bit of liquid soap into a bottle filled from your tap, then shake it hard: a rich foam over clear water points to soft, while weak foam under a cloudy, milky film points to hard. An inexpensive pocket TDS meter reads a rough mineral figure within moments, and it earns its keep when you want to weigh one tanker load against the next. Want the precise value? Reach for a hardness strip or a lab test from a BIS-accredited facility. India's drinking-water norms peg a desirable TDS near 500 and acceptable hardness near 200 mg/L, which means numbers sitting well over those deserve a response. Check again once a quarter, since the city's tanker blend and reservoir levels rise and fall across the seasons.
What actually helps, honestly
Bathing with stored RO water really does cut breakage, and plenty of Pune households keep buckets of it on hand for that reason, yet lugging those buckets to every single wash is no way to live. Vinegar or yogurt rinses de-scale a little for one wash and do nothing for the next.
A shower filter is worth understanding clearly. It reduces chlorine and sediment, which helps, but it does not remove the calcium and magnesium hardness. Measure your TDS before and after one and it reads about the same, so the hardness still reaches your hair. Filters that claim to "condition" or "sequester" minerals do not remove what is already bound to the strand from earlier washes either. That is the gap a chelating shampoo closes: instead of neutralising a mineral and leaving it parked in the fibre, it lifts it off and rinses it away. A plain clarifying shampoo strips oil and buildup but may not bind metal ions at all, so it is not the same tool.
Where deSal fits
deSal Hard Water Defense is a chelating shampoo built for exactly this water. Disodium EDTA and citric acid grab the calcium and magnesium bound to the hair and rinse them off, at pH 5.45 so the scalp is not pushed alkaline every wash, with panthenol, hyaluronic acid and argan oil to put moisture back. It is about ₹765 for 220 ml, roughly ₹3.5 per ml. It came out of months of R&D by two IIT Roorkee engineers, bench-tested against genuinely hard water above 500 TDS rather than clean lab tap, and it is in-vivo tested for skin safety (Mascot Spincontrol: dermatologically tested, clinically tested, non-irritant). Chelation is established chemistry that removes bound calcium and magnesium, a real mechanism with real testing.
More cities: for water hardness and hair advice across other Indian cities, see the hard water by Indian city guide.
FAQ
Is Pune water hard or soft? That comes down to where it originates. The core city runs on dam supply that stays moderate, generally 200 to 500 ppm TDS, whereas the borewell and tanker water feeding many neighbourhoods is truly hard, a few pockets running past 800 ppm. Because what arrives changes from one building to the next, a fast soap or TDS check at home is the only dependable way to pin down your own supply.
Which Pune areas have the hardest water? The stiffest readings cluster across the borewell and tanker belt: Hadapsar, Mundhwa, Kharadi, Wagholi, and PCMC townships like Wakad and Hinjewadi. Dam-fed core zones such as Kothrud, Aundh and Deccan are usually softer. It varies by society and bore depth, so test rather than trust the area name.
Does hard water cause hair fall in Pune? Not from the root. Hard water weakens and roughens the strand so it breaks more easily, and irritates the scalp, which makes normal shedding look far worse. Reducing the mineral load protects hair, but sleep, diet, stress and medical causes matter too.
Will a shower filter fix it? Partly. A filter cuts chlorine and sediment but does not remove the calcium and magnesium hardness, so TDS reads about the same after it and the hardness still reaches your hair. A chelating shampoo removes the minerals bound to the strand, which a filter cannot.
Is a chelating shampoo the same as a clarifying shampoo? Not quite. Clarifying strips oil and product buildup; chelating specifically binds metal ions like calcium and magnesium. Many chelating shampoos clarify too, but a plain clarifying shampoo may not chelate.
Sources
- Hard water, calcium deposition and reduced hair breaking strength: PMC6028999
- Lower hardness (around 212 ppm) showed no significant difference: PMC3927171
- Shampoo pH, cuticle friction and breakage: Gavazzoni Dias et al., Int J Trichology 2014, PMC4158629
- Alkaline scalp, Malassezia and dandruff: British Journal of Dermatology, PMC2923939
- WHO hardness classification bands (mg/L CaCO3)
- Central Ground Water Board groundwater data, Pune district
