How to Safely Remove Water Spots from Quartz Countertops

How to Safely Remove Water Spots from Quartz Countertops


How to Remove Hard Water Spots from Quartz Countertops

Hard water stains and hard water spots are common nuisances in kitchens, yet can be difficult to clean.  In order to simplify the process and keep your quartz countertops safe and protected, we will explain what hard water stains are, why they are difficult to remove from quartz countertops, and provide a straightforward and essential “Do and Don’t” list as a guide for removing them.


What Are Hard Water Spots?

Hard water spots typically show up around the sink and faucet areas on kitchen countertops.  They are called by a variety of different names such as mineral deposits, calcium, or limescale, and they typically appear as chalky stains that won’t wipe away.  Often times we may wipe our countertops with water or leave water to dry in our sinks.  When the water evaporates, it leaves leftover minerals that bond to the surface like a magnet, leaving water spots.  These marks still occur even with a water softener; softeners just create a softer form of hard water.

Difficulty Cleaning Hard Water Spots

All engineered stones such as quartz countertops must be cleaned with pH-neutral cleaners.  This is because non-neutral cleaners (meaning acidic or alkaline-based) can chemically react with the resins used in quartz counters, permanently damaging the look of the surface.  Hard water spots, unfortunately, can not be removed by pH-neutral cleaners, making them difficult to clean.  Although certain cleaning products specialize in removing such deposits, the large majority of them are acidic or alkaline-based. This is why prevention is key.  If you may have used such cleaners on your surface, see What is Etching?
With this in mind, here is our list of guidelines for removing hard water spots and mineral deposits from quartz countertops:

How to Clean Hard Water Spots 


  1. Use grade #0000 super-fine steel wool to remove light water spots

  2. Carefully use a new, sharp straight-razor or scraper to remove stubborn, heavy spots

  3. Take preventative measures to prevent water stains and mineral deposits from building up



  1. Don’t use chemical solutions on quartz countertops to remove water spots

  2. Don’t use vinegar, or lemon juice, they can etch your surface

  3. Don’t use non-neutral household cleaners on your quartz

  4. Don’t use water and dish soap to clean your quartz, as they can lead to more water spots, mineral deposits, and soap-scum build-ups 

Preventing Water Stains and Mineral Deposits

As mentioned earlier, prevention is key when dealing with quartz surfaces. Though soap and water may be a simple way to remove messes, they increase your risk of developing water spots, and will create a cloudy haze over time due to soap scum build-up. Similar to washing glass with a soapy wet rag or sponge and never rinsing it, doing the same on your quartz will make it lose its shine. As a result, we recommend purchasing a pH-neutral cleaner or treatment that does not require a rinse. pH-neutral cleaners can not remove water spots or mineral deposits, nor can water and soap.  For this reason, it is beneficial to consider treatments with protective formulas such as ioSeal, which can defend against deposits and common issues such as staining or fading.


We hope this information has served well to clarify and simplify cleaning in the future.  With a history of more than 25 years of experience in the stone-installation and stone-care industries, we believe in educating consumers into stone-care professionals. With that in mind, if any further questions about your stone surface exist, reach out to us at and we will help to spread the solution.


Discover the "ioSeal™ Advantage on Quartz"

  • An additional level of protection against stains, hard water spots, calcium and limescale buildup.
  • Helps protect against UV rays and fading
  • Safe to use on unsaturated polyester resin, natural and engineered stones
  • Leaves a smooth look and reflective feel
  • Colors become vibrant

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  • Sam Munro
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