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 in kitchens, but difficult to clean from stone surfaces.  To simplify the process and keep your quartz countertops safe and protected, we will explain what causes hard water stains, the "Do's and Dont's" of removing them, and how to prevent them in the future.

Please note that removing water spots from granite countertops or composite granite sinks requires a different (and simpler) method.


What Causes Hard Water Spots?

Hard water spots generally show up around the sink and faucet areas on kitchen countertops.  They are composed of mineral deposits such as calcium or limescale, and appear as chalky stains that won’t wipe away. 

When cleaning with water, the water evaporates, leaving leftover minerals.  These minerals bond to the surface, building up into deposits.  These marks still occur even with a water softener; softeners just create a softer form of hard water.


Quartz-Safe Cleaners Can Not Remove Hard Water Spots

Quartz countertops are combined with acid-sensitive resins during their manufacturing, meaning they are vulnerable to chemical damage.  This causes acidic products such as vinegar, lemon juice, or acidic cleaners to eat through the resins, "etching" the surface. As a result, quartz requires pH-neutral cleaners.

Hard water spots, unfortunately, can not be removed by pH-neutral cleaners.  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.
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. For heavier spots, Carefully use a new, sharp straight-razor or scraper.

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



  1. Don’t use aggressive/strong cleaners on your quartz or granite countertop

  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 

 The easiest method of removing hard water spots from quartz is to use Super-Fine Steel wool (#0000 grade).  Begin in an inconspicuous (hidden) area, buffing the surface in a circular motion.  Ensure the area is undamaged, and proceed to mimic the technique along the water spots.  This should be enough to remove light mineral deposits from the surface.

If heavier deposits exist, it may be best to carefully scrape them off of the surface with a straight razor.

Preventing Water Stains and Mineral Deposits

Removal is difficult, so prevention is key. 

Many individuals clean their countertops with soapy water, but this should be avoided. Like washing glass with a soapy ret wag or sponge, doing this to your quartz can create a cloudy haze over time.  This is because often times the water will dry, leaving leftover minerals or soap-scum.

For this reason, it's recommended to utilize a pH-neutral cleaner that is formulated for your surface, or to use a product designed for preventing water spots.

Although quartz must be cleaned with pH-neutral cleaners, it is worth noting that pH-neutral cleaners can not remove water spots or mineral deposits, nor can water and soap.  For this reason, it is beneficial to consider ioSeal-containing treatments, 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

Helpful Links:

Previous Post Next Post

  • Sam Munro
Comments 2
  • Sam

    Hi Connie,

    From the information you have given, we are unable to give a definite diagnosis for the issue. There is more information we would need to know, such as when the circled appeared, if you used the product before or after, which exact products you haves used on the sink, etc. It is possible that the circles could be a result from heat damage such as hot cups; however, the most common cause of this issue is damage from abrasive products (windex, CLR, oven cleaners, vinegar, lemon, etc.).

    If the circles are a surface-stain or residue issue, follow our recommendations and try to remove them from the surface with grade #0000 ultra-fine steel wool. If this does not work, then the issue is due to heat damage, chemical etching, or something similar. Our product, the CTP Multi-Surface Treatment, is an excellent treatment for preventing and defending your quartz countertop from hard water stains and mineral deposits; however, it is not able to remove mineral deposits/hard water stains or reverse etching/heat damage.

  • Connie Gurule
    Connie Gurule

    New white quartz. Cloudy circles 4 as if hot cup was set there. Had to have men who installed. They will not take responsibility. Read all cleaning recommendations & use Weissman to clean. Any way to remove, return original shine? Your product?

Leave a comment
Your Name:*
Email Address:*
Message: *

Please note: comments must be approved before they are published.

* Required Fields