How to Remove Water Stains from Granite

What Causes Water Stains on Granite?

Water stains on granite come in two forms: surface water spots (mineral deposits left when water evaporates) and dark water marks (moisture that has soaked into the stone). Both are common, and both can be treated — but they require different approaches.

Type 1: White Water Spots (Hard Water Deposits)

These appear as cloudy, chalky rings or spots, usually near the sink or where glasses sit. They're caused by minerals in tap water — calcium and magnesium — left behind after the water evaporates.

What You'll Need

• Microfiber cleaning cloths
• Weiman Granite Cleaner
• Dawn Platinum Dish Soap
• Warm water

⚠️ Do NOT use vinegar or CLR on granite — even though these work on other surfaces, they will etch and permanently damage granite.

How to Remove White Water Spots

1. Dampen a microfiber cloth with warm water and wipe the area to soften the deposits.
2. Apply a small amount of Weiman Granite Cleaner to the cloth and rub gently in circular motions.
3. For stubborn spots, make a paste of baking soda and water, apply to the spot, and let sit for 5 minutes before wiping away.
4. Rinse with a clean damp cloth and dry immediately.

Type 2: Dark Water Marks (Moisture Absorption)

These appear as darker patches on the granite, usually after a wet item has been left sitting on the surface. This happens when water bypasses a weakened sealant and soaks into the porous stone.

How to Remove Dark Water Marks

1. First, let the area dry completely — sometimes the mark disappears on its own as the moisture evaporates.
2. If the mark remains after drying, the sealant may be compromised. Clean the area with Weiman Granite Cleaner.
3. Once clean and dry, apply a fresh coat of Weiman Granite Sealer to prevent future absorption.

Preventing Water Stains on Granite

• Dry the surface immediately after any water contact — especially near the sink.
• Use coasters under glasses and bottles.
• Maintain your sealant — a well-sealed granite surface repels water rather than absorbing it. Test annually by dropping water on the surface; if it beads, you're good.
• Wipe up splashes from the faucet area daily.

When to Reseal

If water marks keep returning or the stone absorbs water quickly, it's time to reseal. The Weiman Granite & Stone Sealer is easy to apply at home and provides lasting protection against moisture and staining.

Final Thoughts

Water stains on granite are frustrating but fixable. The key is knowing which type you're dealing with and using stone-safe products. Most importantly, keep your sealant in good shape — it's your granite's best defense against water damage.