How to Sterilize Quartz Countertops

Quartz countertops are an increasingly popular choice for kitchen and bathroom remodeling projects. Made from ground quartz combined with resins and pigments, these non-porous surfaces are praised for their durability, low maintenance, and stylish appearance. However, like any surface in your home, quartz counters require regular cleaning to prevent the buildup of bacteria and germs. Here is a guide on the best practices for sterilizing quartz countertops.

Why Sterilize Quartz Countertops?

Sterilizing your quartz countertops helps kill harmful germs, bacteria, viruses, and mold that can accumulate on the surface. Here are some key reasons to regularly disinfect your quartz:

  • Prevent Foodborne Illnesses: Quartz can harbor Salmonella, E. coli and other bacteria that can cause food poisoning if allowed to spread. Sterilizing kills these pathogens.
  • Protect Against Viruses: Viruses like the flu, common cold, and norovirus can survive on quartz. Disinfecting helps stop the spread of illnesses.
  • Remove Mold & Mildew: With moisture, mold and mildew can grow in tiny crevices. Sterilizing prevents growth and removes existing mold.
  • Improve Air Quality: Disinfecting quartz eliminates germs that can circulate into the air and be breathed in, improving indoor air quality.
  • Enhance Cleanliness: Sterilizing removes soils and stains for a visibly cleaner, fresher look.

Regularly sterilizing your quartz countertops is vital for protecting your family’s health and maintaining a pristine, appealing kitchen or bath space.

How to Sterilize Quartz Countertops

Fortunately, sterilizing quartz is a straightforward process. Here are some effective methods:

Daily Cleaning

  • Use a gentle quartz cleaner daily. Look for PH-neutral cleaners specifically formulated for quartz.
  • Spray or wipe the cleaner over the entire surface. Let it sit briefly before wiping clean with a soft cloth or sponge.
  • For stuck-on messes, use a non-abrasive scrubbing pad and gently scrub the area before wiping.

Weekly Disinfecting

  • Make a disinfecting solution of 1 part bleach to 10 parts water.
  • Apply the solution liberally over the entire counter and let sit for 5-10 minutes.
  • Rinse thoroughly with clean water and wipe dry with a microfiber cloth.

Deep Cleaning as Needed

  • Make a paste of baking soda and hydrogen peroxide. Spread over soiled areas.
  • Let bubble for 5 minutes before rinsing and drying thoroughly.
  • For mold or mildew, use an antimicrobial quartz cleaner according to label instructions.

Other Tips

  • Avoid abrasive pads or cleansers that can damage the quartz surface.
  • Disinfect sinks, faucets, and backsplashes too.
  • Allow quartz to completely dry after sterilizing to prevent new mold growth.
  • Wipe up spills quickly to prevent staining.

Choosing the Best Disinfectants

Look for sterilizing products specifically formulated for non-porous quartz surfaces. Recommended options include:

  • Quartz Cleaner: Use a daily quartz cleaner to remove soils. Look for non-abrasive, PH-balanced formula.
  • Diluted Bleach: A bleach and water solution effectively kills germs and mildew on quartz.
  • Hydrogen Peroxide: Mixed with baking soda, hydrogen peroxide bubbles away grime.
  • Tea Tree & Eucalyptus Oil: Natural disinfecting oils help sanitize quartz.
  • Antimicrobial Cleaner: Specialty disinfectants kill mold and bacteria.

When in doubt, reference your quartz manufacturer’s care recommendations for their approved cleaning products. Avoid abrasive compounds that could scratch or dull the surface.

Maintaining a Sanitary Quartz Countertop

Sterilizing your quartz counters only takes a few minutes but pays off in a healthier, cleaner kitchen. Follow these best practices:

  • Disinfect high-touch areas like around the sink after use.
  • Clean up spills ASAP to prevent stains and growth of bacteria.
  • Wash surfaces thoroughly with soap and water before disinfecting.
  • Allow quartz to completely air dry after sterilizing.
  • Disinfect sinks, fixtures, and backsplashes too for a totally clean space.
  • Replace sponges/rags weekly to prevent spreading germs.
  • Inspect for mold growth around sinks and windows monthly.
  • Deep clean quartz 1-2 times per month or as needed.

With regular sterilizing, you can keep your beautiful quartz countertops free of hazardous bacteria and molds. Be sure to use cleaning products specifically designed for quartz and always thoroughly rinse and dry the surface after disinfecting. Consistent, proper sterilization habits keep this popular surface safe and hygienic for food prep and bathing.

Frequently Asked Questions About Sterilizing Quartz Countertops

How often should I disinfect my quartz counters?

It’s recommended to deep clean quartz counters 1-2 times per month with a thorough disinfecting. However, high-traffic areas around sinks and stoves should be cleaned daily or after heavy use to kill bacteria and prevent buildup.

What’s the best way to sanitize quartz?

An effective sanitizing solution for quartz can be made with 1 part bleach diluted in 10 parts water. Apply the solution and let sit 5-10 minutes before rinsing. Hydrogen peroxide, antimicrobial cleaners, and concentrated quartz disinfectants also work well.

Can I use vinegar to clean quartz?

White vinegar is too acidic for quartz and can dull the surface over time. Avoid vinegar, lemon juice, abrasives, or strong chemicals. Stick to PH-neutral cleaners specifically formulated for quartz.

How do I remove mold from my quartz countertop?

If mold is present, clean the affected area with an antimicrobial quartz cleaner according to label instructions. Allow to sit 10 minutes before scrubbing and rinsing clean. Repeat as needed until mold is removed. Prevent future growth by addressing any moisture issues.

Does quartz need to be sealed?

No, quartz does not require sealing. The resins used to manufacture quartz make it non-porous and impervious to stains and moisture. Avoid sealants or waxes that could cause buildup on the surface.

Can I use rubbing alcohol to disinfect quartz?

Rubbing alcohol can disinfect quartz counters in a pinch but should not replace regular cleaners. It may not remove heavy soils. Make sure to dilute alcohol and rinse surfaces thoroughly after use.


Regular sterilization keeps quartz looking like new while protecting your family from illness-causing germs and bacteria. Be sure to use only non-abrasive cleaners designed specifically for quartz. Disinfect high-use areas after each use, and deep clean the entire counter 1-2 times per month. With the proper products and techniques, maintaining sanitary quartz countertops is simple and effective. Consistent cleaning habits prevent the growth and spread of hazardous germs on this popular countertop material.