Prep first
Before you start
- Blot standing water now with a dry, white cloth or paper towels.
- Press and lift; wiping spreads the water across the stone.
- Test any cleaner on a hidden spot before using it on the mark.
Yes, water can mark granite, and it usually shows up as a ring or a dull patch on the polished surface. A fresh mark lifts with quick blotting, but one that sits and dries can set, and some set-in stains may never be completely removed. Wipe it up before it dries, since that is when it comes out easiest.
A water stain on a granite countertop or sink usually responds to a pH-neutral stone cleaner, so skip anything acidic. If a dark stain on black granite still shows once it's dry, a poultice is the next thing to try. Check the mark again after each round so you can tell whether it's fading.
Before you start
What granite can take
Safe to use1
- Water
Use with care6
- Hot water
- Chlorine bleach
- Oxygen bleach
- Solvents (alcohol, spot removers)
- Acids (vinegar, lemon)
- Heat, once the stain is out
Avoid1
- Scrubbing and abrasives
7 items
What you'll need
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- Dry white absorbent cloth or paper towelsTo blot the water up without spreading it. (opens Amazon)
- Mild soapFor the quick flush before the main clean. (opens Amazon)
- Soft clothTo dry the area without leaving marks. (opens Amazon)
- Neutral stone cleanerThe cleaner for the main clean and for mixing the poultice. (opens Amazon)
- White absorbent powderThe base of the poultice that draws the mark out.
- Plastic wrapTo cover the poultice so it doesn't dry out during the wait. (opens Amazon)
- Distilled waterTo rinse off the poultice after it has done its work.
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6 steps
Step by step
Step 1 of 6
Blot up the standing water
Press a dry, white absorbent cloth or paper towels onto the water right away. Don't wipe, since wiping spreads it across the stone.
Step 2 of 6
Flush the area with mild soap
Flush the spot with water and a mild, pH-neutral soap that isn't dish soap, then rinse several times. Dry it with a soft cloth before you judge how much of the mark is left.
Step 3 of 6
Clean with a neutral stone cleaner
Work a neutral stone cleaner over the whole mark, not just the darkest part, then rinse and dry the area. If the mark is gone, you're finished; if it isn't, move on to the poultice.
Careful. Don't use dish soap or other improper cleaners: dish soap can leave a dulling film, and improper cleaners break down the sealer.
Step 4 of 624 to 48 hours
Apply a poultice to stubborn marks
Mix a white absorbent powder with the neutral stone cleaner into a paste, and spread it 1/4 to 1/2 inch thick over the mark. Cover it with plastic and leave it in place for the full 24 to 48 hours.
Tip. Press the plastic down at the edges so the paste doesn't dry out early.
Careful. Don't use whiting or fuller's earth with acid chemicals in a poultice: the reaction cancels it.
Step 5 of 6
Rinse and repeat if needed
Once the paste has dried, lift it off and rinse the area with distilled water. Difficult stains may take up to five applications, so repeat the poultice until the mark is gone or stops changing.
Tip. Let the stone dry fully between rounds so you can see what's left.
Step 6 of 6
Call a pro if the mark stays
If the stain remains after the poultice rounds, call your stone supplier, installer or a restoration specialist. Stronger products tried at home can damage the stone, so stop there.
If you'd rather buy than mix
Best products for water stains on granite
Look for a neutral stone cleaner and a white absorbent powder for the poultice. Choose products made for stone, and leave out anything that isn't.
Granite Gold® Daily Cleaner
How we picked these: each product is made for this type of stain, its maker doesn't warn against using it on granite, and its directions fit the steps above.
Finished the steps? How does it look?
Nice work. Let it dry completely and check it again in good light. Here is what done looks like:
How to tell it's really gone →A faint mark usually needs one more round, not a stronger product.
See what to do for what you're seeing →Heavy buildup usually takes more than one round.
Heavy or long-standing buildup →When to call a professional →How to tell it's working
The mark is gone when it looks the same as the stone around it once it's fully dry. If a mark still shows after the poultice has been rinsed, go back to the poultice rather than scrubbing harder.
What changes for yours
Adjust for your granite
Water on granite countertops
On a countertop the same steps apply, but work the cleaner from the outside edge of the ring toward the middle so the water isn't pushed further in. Blot a spill right away, because countertops get wet throughout the day and a fresh ring lifts more easily.
If the seal looks worn or the stone is unsealed, stop after the blot and flush and call your stone supplier before using a poultice on that spot. Otherwise, the poultice is the right next step for a ring that stays.
Water on granite sinks and around faucets
Around a sink and faucet, water builds up in the same spot every day, and that buildup can leave dull areas on the stone. Start with the blot and the flush, then the neutral stone cleaner, so you can see what the cleaning has actually done.
Dry the area after every use so water doesn't sit there. Dull areas that remain after cleaning mean the buildup has gone too far, so call a stone restoration specialist rather than adding more products.
Water on granite floors, slabs, headstones, and other surfaces
On a polished granite floor, use the same steps and dry the spot fully before anyone walks on it. Blot quickly, before the water spreads across the floor.
For a headstone or outdoor slab, test the cleaner on a hidden spot first. Then call a stone restoration specialist before trying a poultice.
Heavy or long-standing buildup
A mark that has been there for a long time is drawn out with the poultice rather than wiped away. Leave the poultice in place for the full 24 to 48 hours and repeat it if the mark is still visible.
A mark that has dried and set after a food or drink spill can be treated with a stronger mix: 12% hydrogen peroxide with a few drops of ammonia, used indoors. Apply it as a set-in treatment, not as a routine clean, and rinse the area well afterward.
Some stains may never be completely removed, and deep rust can be permanent. If the mark still shows after the poultice and the stronger mix, call a stone restoration specialist rather than trying harsher products.
Vinegar, baking soda, peroxide and more
Do home remedies work on water stains on granite?
Many home remedies for water marks were written for wood, fabric or glass, and some can harm granite. Here is how each common one fits this stone.
Skip5Avoid1
What makes it worse
Mistakes to avoid
Don't scrub with scouring powders or pads
Scouring powders and creams may scratch stone, and scrub pads act like abrasives on it. Blot, flush, and use the neutral stone cleaner instead, and let the poultice do the work on a stubborn mark.
Don't use vinegar or other acidic cleaners
Granite can contain acid-sensitive trace minerals, so acidic cleaners can harm it even though the stone is generally tough. Use the neutral stone cleaner from the steps instead.
Don't mix bleach and ammonia
The mix creates a toxic gas that can be lethal. Keep bleach well away from ammonia whenever you clean, including when you use the stronger set-in treatment.
Don't use hydrofluoric acid rust removers
Rust removers containing hydrofluoric acid attack all stones, including granite and quartzite. For a rust mark, use the poultice from the steps instead.
Troubleshooting
If the stain is still there
Pick what you're seeing:
The dark spot is still there after cleaning
Make sure the area is completely dry before judging it. If it remains, apply a poultice under plastic for 24 to 48 hours.
The poultice helped but didn't finish the job
Rinse with distilled water, let the stone dry, and apply another poultice. Stubborn marks often need several rounds.
The surface looks dull around the sink
Ignored water buildup can leave dull areas that call for stone restoration. Contact a restoration specialist.
The counter darkens every time it gets wet
The sealer is likely worn. Clean with a neutral stone cleaner and ask your installer about resealing.
When to call a professional
Call your stone supplier, installer or a restoration specialist for stains that resist poulticing, deep rust or copper stains, deeper scratches and nicks, and etching you can't polish out. Dull areas around sinks from ignored water buildup also call for stone restoration rather than more cleaning.
Questions
Does water stain granite?
Water can leave a ring or a dull mark on granite, especially when it sits. Blot it up quickly, then follow the steps above.
Do black or dark granite need a different method?
Dark or black granite gets the same first steps: blot, flush, then clean with the neutral stone cleaner. Test the cleaner and poultice on a hidden spot first, and if a dark mark stays after the poultice, call a stone specialist rather than trying stronger products.
Is there a water stain remover for granite?
You don't need a special water-stain remover for granite. The neutral stone cleaner covers routine marks, and a poultice covers the ones that stay.
Will a water ring on granite be permanent?
A fresh ring usually lifts with the blot and cleaning steps, while an older mark may need several poultice rounds. Check the result after each round so you know whether the mark is still changing.
Can I use hot water on granite?
Warm water is what routine cleaning calls for, so you don't need hot water to deal with a water mark. The flush step uses plain water with mild soap, which is enough for a fresh spot.
Water Stains on other materials
Other stains on granite
Start from the bigger picture
How we know this
Every method, amount and warning here comes from university extension services, industry bodies and product makers. We read them, check every step for unsafe combinations and changed amounts, and write it up so you can follow it.