8 Tips To Clean Hard Water Stains From Granite

After investing in luxurious, showroom-style granite countertops, the last thing you want is to see them marred by unsightly stains from hard water build-up. If you haven't installed a water softener yet, the hard water in your home can leave behind a noticeable residue. Luckily, we've gathered the best tips to proactively prevent hard water stains and effectively eliminate any that may have already formed on your stunning granite countertops.

1. Clean Any Standing Water

If there’s any water remaining on the granite, make sure to sop it up with a clean cloth ASAP to prevent further staining and damage. You should also make it a point to clean your granite daily with water and mild soap (or a cleaning product intended for stone). Don’t use abrasive or acidic products, which could damage the sealant on the granite.

2. Treat Immediately

If you notice a hard water spot, treat it immediately. Any spots or rings left behind by wet dishes should be removed ASAP to prevent those hard deposits from forming on your countertop.

3. Use Baking Soda

If, after wiping down and then cleaning the area, you still see hard water deposits, make a paste with baking soda and water. Apply the paste to the area and gently scrub it in using a soft-bristled brush. Rinse the area with water. Pat it completely dry with a microfiber cloth.

4. Try Talc

Talc, a mineral powder, is another product that works well against hard water stains. Mix equal parts talc and hydrogen peroxide to form a paste, and let the paste sit on the stain for five minutes. Next, scrub away the paste with a soft-bristled brush. You might need to repeat this one or two more times.

5. Mix Up a Poultice

A poultice is meant to be left on the stain for an extended period of time. Mix up a poultice with hydrogen peroxide and flour—you’ll need enough to create a thick paste with a similar texture to wet plaster. Apply the poultice to the stains, then cover the area with plastic wrap. Tape down the plastic wrap with painter’s tape and let the area sit for 24 hours. The next day, wipe the area with a clean, damp cloth, and give it a once-over with a mild soap and water. Make sure to wipe the countertop dry.

6. Get Sharp

If you have water rings forming around your faucet, you can try gently scraping them off with a razor blade. No razor blade around? A Brillo pad, used deliberately and gently, can also work. 

7. Call a Professional

If you’ve got too many water stains to count and want to spend your Saturday at the pool rather than mixing up poultices, call a professional house cleaning company near you. Chances are, they’ve dealt with this issue before and can make your granite look good as new in no time.

8. Install a Water Softener

Want to prevent hard water stains for good? Look into installing a water softener. The cost to install a water softener is $1,500 on average; long term, though, you’ll likely see lower water heating bills without all those hard minerals floating around.