The shower glass never looks clean. The tap has a white crust around the base. The bathroom tiles have a dull haze that no amount of ordinary floor cleaner touches. That is limescale — the calcium and magnesium that Delhi NCR water carries, left behind on the surface every time a drop of water dries there instead of being wiped away.
The good news is that fresh limescale is easy. It dissolves in mild acid, and a bottle of white vinegar or a lemon will shift most of what is on your glass and chrome. The bad news is twofold: old, built-up scale can take several rounds and a lot of patience, and the same mild acid that rescues your shower glass will permanently damage a marble or granite surface. Delhi homes are full of stone flooring and stone counters, so this is the single most important thing on the page.
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In this guide
Why does Delhi water leave white marks on everything?
Because the water is hard, and hardness is just dissolved mineral. When water sits on a surface and evaporates, the water leaves — the mineral does not. What stays behind is a thin white deposit, and every drying drop adds another layer to it.
- It builds in layers, so it gets harder to remove with time. A day-old spot wipes off. A year of untouched shower glass has a bonded crust that needs repeated soaking.
- Heat makes it worse. Anything that heats hard water — the geyser, the kettle, the iron — drives minerals out faster, which is why the scale around a hot tap is usually thicker.
- On glass it can become permanent. Left long enough, limescale starts to etch into the glass surface itself. At that point cleaning will improve it but never fully restore the clarity.
- Borewell and tanker supply are often harder than piped supply. Many parts of NCR run on one or the other, and homes on borewell water usually see scale build noticeably faster.
That is the reason the habits matter as much as the cleaning method — drying a surface takes ten seconds, and removing a year of scale takes an afternoon. Our hard water habits for a Delhi home page covers the prevention side; this page is about getting rid of what is already there.
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Mild acid plus dwell time plus a non-scratching pad. The mistake almost everyone makes is scrubbing hard for two minutes instead of letting the acid sit for twenty.
- Warm the vinegar slightly and soak, do not spray-and-wipe. Plain white vinegar works. Warm it a little, soak an old cloth or paper towels in it, and press them flat against the glass so they stay wet against the scale for fifteen to twenty minutes.
- Then work it with a non-scratch pad. A white nylon pad or the soft side of a kitchen scrub. Never steel wool, never a blade, never a hard abrasive powder — those leave fine scratches that catch even more scale afterwards.
- Rinse fully, then dry the glass. Rinsing without drying just deposits a fresh layer of scale as it dries. Dry it with a squeegee or a microfibre cloth.
- Repeat rather than escalate. Heavy scale usually needs two or three cycles. Two gentle rounds beat one aggressive round that scratches the glass.
- Finish with a squeegee habit. Thirty seconds of squeegee after each shower keeps glass clear for years. This is the only genuinely permanent fix.
For mirrors, be more careful still: never let liquid run down to the bottom edge, because it seeps behind the silvering and causes the black spotting you see on old bathroom mirrors. Apply to the cloth, not to the mirror.
Taps, showerheads and steel: descaling without wrecking the finish
Soak rather than scrub, and keep the acid off any coloured or coated finish. Chrome and stainless steel tolerate a vinegar soak well. Matt black, brushed gold, bronze and other coated finishes do not — acid strips them.
- Bag the tap. Half-fill a small polythene bag with vinegar, slip it over the spout so the crusted part is submerged, and tie it on with a rubber band for an hour. It descales the parts you cannot reach.
- Unscrew the aerator and the showerhead and soak them separately. The mesh inside is where scale kills water flow. Soak, brush with an old toothbrush, rinse and refit. A weak tap is very often nothing but a blocked aerator.
- Do not soak coated or coloured fittings. Wipe them with a damp cloth and a drop of dish soap only. If you do not know what the finish is, test on the underside first.
- Rinse thoroughly and dry. Acid left sitting on any metal for hours will start to dull it, and a wet fitting immediately starts collecting new scale.
- Never mix cleaners. Acidic descaler and bleach or any chlorine-based cleaner together release a dangerous gas. One product, rinse, then the next — never both in the same bucket.
If the flow does not recover after a proper descale, the restriction is further up the supply line rather than at the outlet, and that is a plumbing question rather than a cleaning one.
Tiles yes, marble never: the acid rule
This is the part that costs people money. Glazed ceramic and vitrified tiles can take mild acid. Marble, granite, Kota stone, limestone and most natural stone cannot. Acid does not stain those surfaces — it dissolves them, leaving a dull, rough patch called an etch mark that no cleaning will bring back.
- Safe on glazed ceramic and vitrified tile: diluted white vinegar or a bathroom limescale remover, left to dwell, then scrubbed and rinsed well. Test a hidden corner first, especially on textured or anti-skid tiles.
- Never on marble, granite or any natural stone: vinegar, lemon, acidic toilet cleaner, descaling powder, or any product whose label says it removes limescale or hard water stains. One accidental splash leaves a permanent mark.
- On stone, use a pH-neutral stone cleaner and plain water. Mineral film on stone is wiped away while it is fresh, not dissolved later.
- Watch the grout, not just the tile. Cement grout is also attacked by strong acid, which softens it and makes it shed and discolour faster.
- Never use acidic toilet cleaner on the floor. This is the commonest way marble and stone floors in Delhi bathrooms get ruined — the bottle gets tipped out onto the floor to "clean it properly", and the damage is done in minutes.
Stone that has already been etched or dulled needs mechanical restoration rather than cleaning — grinding and re-polishing the surface. What that involves and what drives the cost is covered in marble polishing in Delhi, and day-to-day care is in cleaning marble and granite floors.
When is hard water staining a job worth paying for?
Do the vinegar rounds first — they clear most household scale for the price of a bottle. It is worth bringing in a professional when:
- Years of scale have built up across a whole bathroom. This is hours of dwell-and-scrub work on glass, tiles, grout and fittings, and it is a standard part of a bathroom deep clean rather than something to do on a weekday evening.
- Stone floors or counters are dull, etched or watermarked. That is a polishing job, not a cleaning job, and it needs machines and abrasives.
- The staining is on high or exterior glass. Outside-facing windows above the ground floor are a safety question before they are a cleaning one.
- The white film keeps coming back within days of cleaning. That points at the supply itself — a very hard borewell or tanker source, or a tank that needs cleaning. Our water tank cleaning page covers the tank side.
If you are booking, say clearly which surfaces are natural stone before the team starts and ask what they intend to use on the bathroom floor. A cleaner who answers that question properly is telling you they know the difference between tile and stone. Related reading: bathroom deep cleaning and bathroom care tips for a Delhi home.
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Get free quotes →Frequently asked questions
How do I remove hard water stains from shower glass?
Can I use vinegar on a marble floor to remove water stains?
What removes limescale from taps and showerheads?
Why do my bathroom tiles look hazy even after cleaning?
Is it safe to mix vinegar and bleach to remove hard water stains?
Can hard water stains be permanent?
How we put this guide together
This guide is compiled from common Delhi NCR service patterns and reviewed by the XpertWorker team. XpertWorker connects you with independent, local professionals — we never charge you a paisa, and each professional sets their own price and quotes you free.