Does Filtering Water Remove Fluoride? (2023 Update)

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Dr. Matthew Hannan | My Dental Advocate
Author: Matt Hannan, DDS
Updated: August 7, 2023
Does Filtering Water Remove Fluoride (Dentist's Thoughts) | My Dental Advocate

Fluoride is a mineral added to drinking water for decades to improve dental health. However, only some enjoy fluoride in their drinking water, and many wonder if filtering their water can remove this mineral.

This blog post will explore the science behind fluoride removal from water and the best methods for ensuring your drinking water is free of this mineral from a dentist’s perspective.

 Recommended Reading: Dental Fluoride | The Ultimate Guide

Does Filtering Water Remove Fluoride?

Yes, some water filtration systems can remove fluoride from drinking water. However, the effectiveness of a water filter in removing fluoride depends on the type of filter and the level of fluoride present in the water.

According to the American Dental Association (ADA), fluoridated community water systems serve almost 75 percent of the U.S. population as of 2012.

Understanding Fluoride in Drinking Water

Fluoride is a mineral that has been added to public drinking water for over 70 years to improve oral health. The goal of water fluoridation is to reduce the occurrence of tooth decay and promote overall oral hygiene.

As a dentist, I have seen firsthand the benefits of fluoride in preventing cavities in my patients. This is why I support the fluoridation of community water supplies, as it is a cost-effective public health measure.

In the U.S., the average annual cost of fluoridating the water supply ranges from $0.50 per person in large communities to $3.00 per person in smaller communities. These small costs can lead to significant benefits in terms of oral health for communities.

Fluoride is the 13th most abundant element in the world and can be found in various environmental forms, including air, soil, rocks, and water.

What is Fluoride and How Does it Get into Our Drinking Water?

  • Fluoride is a mineral found in rocks and soil.
  • Fluoride can enter drinking water supplies from natural sources or from water treatment facilities’ addition of fluoride compounds.
  • Fluoride is added to drinking water to maintain the recommended level of 0.7-1.2 mg/L, which is considered optimal for oral health.
  • The Environmental Protection Agency (EPA) regulates the amount of fluoride in drinking water, ensuring that it is within safe levels for consumption.
Recommended Reading: Does Reverse Osmosis Remove Fluoride? (Dentist’s Thoughts)

Water Fluoridation | My Dental Advocate

The Importance of Fluoride in Dental Health

Fluoride is an essential mineral for maintaining strong, healthy teeth and gums. It works by strengthening tooth enamel and reducing the formation of cavities. Fluoride also helps to reverse early signs of tooth decay and can reduce the risk of gum disease. Let’s explore the role of fluoride in promoting dental health and how it can help to prevent tooth decay and gum disease.

Fluoride was introduced as a preventative measure for dental caries in 1945 in Grand Rapids, Michigan.

The Role of Fluoride in Preventing Tooth Decay and Gum Disease

  • Tooth decay occurs when acid produced by plaque bacteria erodes the enamel on teeth. Fluoride helps to strengthen enamel, making it more resistant to erosion.
  • Fluoride also helps to remineralize the teeth by replenishing minerals that have been lost due to tooth decay.
  • Fluoride can reduce plaque formation, a sticky film of bacteria that forms on teeth and contributes to gum disease.
  • Regular exposure to fluoride through drinking water or topical applications can help reduce the risk of tooth decay and gum disease, promoting oral health.
Recommended Reading: Do ZeroWater Filters Remove Fluoride? (2023 Update)

The Pros and Cons of Fluoride in Drinking Water

The addition of fluoride to public drinking water has been controversial for many years. On the one hand, fluoride has been proven to improve oral health by preventing tooth decay and reducing the risk of gum disease.

On the other hand, some individuals are concerned about the potential health risks associated with fluoride consumption. In this section, we’ll examine the pros and cons of fluoride in drinking water to help you decide on its use.


  • Improved oral health: Fluoride has been shown to strengthen tooth enamel, reduce the formation of cavities, and reverse early signs of tooth decay. This can lead to improved oral health and a reduced risk of gum disease.
  • Cost-effective: Fluoridation of public drinking water is a cost-effective way to improve oral health for many people.
  • Convenient: With fluoride readily available in public drinking water, individuals do not need to seek out other sources of fluoride, such as supplements or topical treatments.


  • Potential health risks: Some individuals are concerned about the potential health risks associated with consuming fluoride, such as an increased risk of bone fractures or problems with the nervous system.
  • Overdose: Although rare, it is possible to consume too much fluoride, leading to a condition known as dental fluorosis, characterized by discoloration and mottling of the teeth.
  • Ethical concerns: Some people object to having fluoride added to their drinking water without consent, seeing it as infringing on their freedom.

A report from the U.S. Surgeon General in 2000 estimated that 51 million school hours are lost yearly because of dental-related illness. Without water fluoridation, that number is much higher.

The Science Behind Fluoride Removal from Water

Fluoride removal from drinking water is a process that can be accomplished through various methods. Below is a detailed explanation of the science behind fluoride removal, including the techniques used and the factors affecting their efficacy.

  • Ion Exchange Resins: Ion exchange resins are a type of water treatment technology that can effectively remove fluoride from tap water. The process involves passing water through a bed of ion exchange resin beads, which are charged with positively charged ions. Fluoride ions in the water are exchanged for these positively charged ions, effectively removing the fluoride. ZeroWater filters fluoride using this technique.
  • Reverse Osmosis: Reverse osmosis is another method to remove fluoride from tap water. This process involves forcing water through a semi-permeable membrane, which only allows water molecules to pass through, effectively removing contaminants, including fluoride.
  • Activated Alumina: Activated alumina is a type of absorbent material that can be used to remove fluoride from drinking water. The process involves passing water over a bed of activated alumina, which adsorbs the fluoride ions, effectively removing them from the water.

The effectiveness of these methods can be affected by various factors, including the type and quality of the filtration system, the initial fluoride concentration in the water, and the pH level of the water. Therefore, it is essential to consult a professional or conduct thorough research to determine the best method of fluoride removal for your specific needs and circumstances.

Recommended Reading: The Truth About Fluoride and Teeth Whitening (Dentist’s Perspective)

Common Water Filters and Their Effectiveness in Removing Fluoride

There are a variety of water filters available on the market today, each with its strengths and limitations when it comes to removing fluoride from drinking water. Some common water filters include:

  • Pitcher-style filters: Pitcher-style filters are simple and affordable, but their effectiveness in removing fluoride is limited. Most pitcher-style filters contain activated carbon, which can reduce chlorine and other contaminants. ZeroWater filters fluoride using a 5-stage system.
  • Reverse osmosis systems: Reverse osmosis systems are highly effective in removing fluoride from drinking water and a range of other contaminants. However, they can be expensive and require a significant amount of water to operate.
  • Distillation systems: Distillation systems work by boiling water and capturing the steam, effectively removing a wide range of contaminants, including fluoride. However, distillation systems can also be expensive and consume significant energy.

The U.S. Centers for Disease Control and Prevention (CDC) has cited community water fluoridation as one of 10 outstanding public health achievements of the 20th century.

Are there any Concerns with Removing Fluoride from Drinking water?

Some of the potential concerns with removing fluoride from drinking water include the following:

  • Reduced oral health: By removing fluoride from drinking water, individuals may be at increased risk of developing tooth decay and gum disease. This is particularly true for children who need fluoride to create strong, healthy teeth.
  • Inadequate exposure to fluoride: In areas where the fluoride levels in drinking water are naturally low, removing fluoride from the water can result in insufficient exposure to the mineral, which is necessary for good oral health.
  • Lack of consistency: Removing fluoride from drinking water can result in inconsistencies in fluoride exposure, as some individuals may still receive fluoride from other sources, such as toothpaste, mouthwash, and dietary supplements.

The Best Water Filters for Removing Fluoride and Other Contaminants

ZeroWater 5-Stage Water Filter Replacement
$59.99 $54.99 ($13.75 / Count)

ZEROWATER REPLACEMENT FILTERS: Ensure you are drinking pure-tasting, cleaner water by replacing your Zero Water pitcher filters regularly. Our replacement filters fit in all Zero Water pitchers and water dispensers, from the smallest pitcher to the largest.

FIVE-STAGE WATER FILTRATION: Unlike many water filters & pitchers, Zero Water filters use 5 stages of filtration to bring you cleaner, better-tasting water. Instead of carbon filtering only, our filters use Ion Exchange Technology to reduce contaminants.

NOT AN ORDINARY WATER FILTER: Zero Water filters filter water in 5 stages, are NSF certified to reduce lead and other heavy metals. Zero water removes 99. 6% of total dissolved solids, 2X more than the leading brand (tested by independent lab).

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09/24/2023 08:40 pm GMT

ZeroWater 12-Cup Ready-Pour Water Filter Pitcher

12 CUP WATER FILTER PITCHER: You'll always have cleaner, pure-tasting water in your fridge with our BPA-Free, water pitcher filter. Use the included TDS meter to monitor water quality!

FIVE-STAGE WATER FILTRATION: Unlike many water filters & pitchers, a ZeroWater water pitcher with filter for tap water use 5 stages of filtration, to bring you cleaner, better tasting water.

NOT AN ORDINARY WATER FILTER: A ZeroWater water pitcher filters water in 5 stages and is NSF certified to reduce lead and other heavy metals. Zerowater removes 99.6% of total dissolved solids, 2X more than the leading brand.

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09/24/2023 08:45 pm GMT

ZeroWater TDSmeter-20 ZT-2 Electronic Water Tester
$17.99 $15.99

*Easy To Use

*Measure total dissolved solids in water

*Know exactly when to change filters

*Compare water samples

GET THE LEAD OUT: ZeroWater filters are the only pour-through filters NSF Certified to remove chromium & lead. Our pitchers, tumblers, & dispensers remove virtually all solids for the purest tasting water.

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09/24/2023 08:50 pm GMT

APEC Water Systems ROES-50 Essence Series Top Tier 5-Stage Certified Ultra Safe Reverse Osmosis Drinking Water Filter System

Supreme quality - designed, engineered, and assembled in USA to guarantee water safety & your health. WQA is certified to provide unlimited clean, refreshing crisp, tasting water superior to bottled water. Tank Dimensions-11 x 11 x 15 inches

Premium long-lasting filters remove up to 99% of contaminants such as chlorine, taste, odor, VOCs, as well as toxic fluoride, arsenic, lead, nitrates, heavy metals and 1000+ contaminants. Max Total Dissolved Solids - 2000 ppm. Feed Water Pressure 40-85 psi

America's No.1 rated water filter brand with 20 years of success guaranteeing trouble free, noise-free system for long-lasting, dependable, pure drinking water. 2-year extended manufacturer warranty is available upon registration

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09/24/2023 07:30 pm GMT

Tips for Maintaining Your Water Filter to Ensure Effective Fluoride Removal

It is vital to maintain your water filter to ensure that your water filter continues to remove fluoride and other contaminants from your drinking water. Here are some tips for keeping your water filter to ensure effective fluoride removal:

  • Regular filter cartridge replacement: Regularly replacing the filter cartridges in your water filter is essential for ensuring that it effectively removes fluoride and other contaminants from your drinking water. Most water filters have specific guidelines for how often to replace the filter cartridges, so it is essential to follow these guidelines to maintain the effectiveness of your water filter.
  • Cleaning your water filter: Regular cleaning can ensure that it continues to operate effectively and remove contaminants, including fluoride, from your drinking water. Depending on your type of water filter, cleaning may involve cleaning the filter cartridges, wiping down the exterior of the filter, and more.
  • Monitoring water quality: Regularly monitoring your drinking water quality can help you determine if your water filter is operating effectively and removing fluoride and other contaminants. You can test the quality of your drinking water using a water test kit or by sending a sample to a professional water testing laboratory.

By correctly maintaining your water filter and following these tips, you can ensure that it effectively removes fluoride and other contaminants from your drinking water, helping protect your health and well-being.

Fluoride Research Statistics

  • Currently, around 370 million people in 27 countries consume fluoridated water.
  • Fifty million consume naturally occurring fluoride.
  • Fluoride was introduced as a preventative measure for dental caries in 1945 in Grand Rapids.
  • Studies prove water fluoridation continues to be effective in reducing dental decay by at least 25% in children and adults.
  • The average cost per year for U.S. communities to fluoridate the water ranges from $.50 per person for large communities to $3.00 per person for small communities.

Fluoride Resources

Frequently asked questions (FAQ)


Boiling tap water does not remove fluoride. Fluoride is a mineral that is not readily eliminated through boiling or evaporation, so the concentration of fluoride remains constant in boiled water. To remove fluoride from drinking water, it is necessary to use a water filter specifically designed to remove fluoride.

Distilled water is a type of purified water that is created by boiling water and then collecting the condensation, which leaves behind most impurities including minerals, salts, and chemicals. Fluoride is one of the minerals that can be removed from water through distillation, so distilled water generally does not contain fluoride.

Yes, some refrigerator filters are capable of removing fluoride from drinking water. It is important to choose a filter that specifically states it removes fluoride and to regularly replace the filter cartridge to maintain its effectiveness.

My Experience & Expertise

As a practicing dentist, I have extensive experience using fluoride in my work. Fluoride is a powerful tool in preventing tooth decay and treating dental issues, and I have seen its effectiveness firsthand in my patients. In my experience, fluoride is an integral part of a comprehensive approach to oral health and hygiene, and it plays a critical role in preventing and treating dental problems.

Knowledge is power when cultivating healthy dental habits. The more informed you are, the better positioned you’ll be to prevent avoidable and potentially costly dental procedures for you and your family. Watch for future blog posts, where we’ll continue sharing important information, product reviews and practical advice!