Do ZeroWater Filters Remove Fluoride? (2023 Update)

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Dr. Matthew Hannan | My Dental Advocate
Author: Matt Hannan, DDS
Updated: August 7, 2023
Do ZeroWater Filters Remove Fluoride? | My Dental Advocate

Water filtration systems have become a popular choice for many households looking to improve the quality of their drinking water. ZeroWater and Brita are two of the most well-known brands in the market, with millions of users worldwide.

While Brita uses a basic filtration system, ZeroWater boasts a 5-stage filtration process that removes almost all dissolved solids from water.

In this article, we will explore the technology behind ZeroWater and answer a critical question – does ZeroWater filter fluoride? As a dentist, I have seen the benefits of fluoridated water for oral health, but excessive fluoride intake can also have adverse effects.

So, let’s dive deeper and examine this topic from a dental perspective.

 Recommended Reading: Dental Fluoride | The Ultimate Guide

Does ZeroWater Remove Fluoride?

Yes, ZeroWater removes 99% of fluoride, along with many metals and inorganic non-metals. In addition, ZeroWater’s 5-Stage Ion Exchange Filter is the only pour-through water filter NSF certified to reduce PFOA/PFOS, lead, and chromium.

ZeroWater Inorganic Non-metals Chart | My Dental Advocate
Source ZeroWater

The Five-Stage Filtration System of ZeroWater

According to ZeroWater’s website, the 5-stage filters are the only pour-through filter NSF certified to reduce lead, chromium & PFOA/PFOS. In addition, every 5-stage filtration system comes with a TDS meter. So, you can check the level of dissolved solids before and after filtering your drinking water.

The ZeroWater 5-stage water filtration system undergoes strict internal quality control testing for accuracy and consistency in the product’s specification to ensure the removal of harmful contaminants and guaranteed clean water quality.

Five-Stage Filtration Steps

  1. Course filter screen
  2. Foam distributor
  3. Multi-layer activated carbon & oxidation reduction alloy
  4. Dual comprehensive ION EXCHANGE resin
  5. Ultra-fine screen & non-woven membrane layers

What are Total Dissolved Solids (TDS)?

Total dissolved solids (TDS) measurements comprise a water sample’s non-organic and organic sediments. Enter your zip code on ZeroWater’s website to retrieve your area’s average TDS reading.

ZeroWater TDS Chart | My Dental Advocate
Source ZeroWater

What are PFOA and PFOS?

PFAS are widely used chemicals in many consumer, commercial, and industrial products. Their widespread use is primarily due to their water-resistant properties.

For example, PFOS is an indestructible compound that repels water, grease, and dirt. They are often used to coat pans or rain gear. In addition, PFOA is very good at repelling oil and water. However, they are not biodegradable and regrettably last in the environment for a long time.

According to the Environmental Protection Agency (EPA)

“PFOA and PFOS are extremely persistent in the environment and resistant to typical environmental degradation processes. As a result, they are widely distributed across the higher trophic levels and found in soil, air, and groundwater sites across the United States. The toxicity, mobility and bioaccumulation potential of PFOS and PFOA pose potential adverse effects for the environment and human health.”

Recommended Reading: Does Reverse Osmosis Remove Fluoride? (Dentist’s Thoughts)

What is Fluoride? Why is it in water?

Fluoride is a naturally occurring mineral found in soil, water, and various types of food. It is well known for strengthening tooth enamel and preventing cavities, which is why it is often added to public drinking water supplies.

Water fluoridation began in some parts of the United States in 1945 after scientists noted that people living in areas with higher water fluoride levels had fewer cavities. Starting in 1962, the United States Public Health Service (PHS) recommended that public water supplies contain fluoride to help prevent tooth decay.

Benefits of Fluoride in Drinking Water

  • Strengthens tooth enamel
  • Prevents cavities
  • Promotes oral health
  • Cost-effective and widely available

Despite its benefits, some people choose to remove fluoride from their drinking water due to personal beliefs or health concerns. However, it is essential to note that the appropriate amount of fluoride in drinking water has been determined by the US Public Health Service and the World Health Organization to be safe and effective for promoting oral health.

Natural drinking water sources in the US also have some fluoride in them. Surface water sources (such as lakes and rivers) in the US have an average level of about 0.2 milligrams of fluoride per liter of water (mg/L), although levels can be much higher in some places than others.

American Dental Association

“When used as directed or within the context of community water fluoridation programs, fluoride is a safe and effective agent that can prevent and control dental caries.”

Fluoride remineralizes weakened tooth enamel by repairing and reinforcing it from further acid attacks. The remineralization effect of fluoride can reverse the early decay process and create a tooth surface that is more resistant to decay.
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Brita vs. ZeroWater Filtration Systems

Brita and ZeroWater are well-known names for water, but with so many models, it can be difficult to discern which water pitcher filter system is best for your home. Each has pros and cons that need to be considered.

After detailing ZeroWater’s strengths, let’s take a closer look at Brita water filters and how it compares to ZeroWater.

Recommended Reading: Do Brita Filters Remove Fluoride? (2023 Update)

ZeroWater TDS Compare | My Dental Advocate
Source ZeroWater

Brita Filtration System

Brita filters are uniquely designed to remove impurities, contaminants, and unpleasant tastes and odors from drinking water. The filters use activated carbon to absorb and trap these substances, making the water cleaner and more enjoyable to drink. However, unlike ZeroWater, Brita filters only removed 3% of fluoride, whereas ZeroWater removed 99%, according to this research article.

Components and mechanism of Brita Filters

  • Activated carbon – absorbs and traps impurities
  • Ion exchange resin – removes positively charged contaminants
  • Micro-screen – filters out sediment and other particles

According to a recent study, hollow-fiber membrane filters did not affect fluoride concentrations in fluoridated water, but activated-carbon filters removed some fluoride.

Best ZeroWater Filtration Systems

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

Alternatives for Removing Fluoride from Drinking Water

ZeroWater removes 99% of fluoride from the water; however, alternative systems exist. These alternatives range from water filtration systems to simple household solutions, and each has its benefits and limitations.

Water Filtration Systems for Removing Fluoride

  • Reverse Osmosis: This process uses a semipermeable membrane to remove impurities from water. Reverse osmosis systems effectively remove fluoride and other contaminants such as lead and chlorine.
  • Distillation: This process involves heating water to boiling and collecting the steam. The steam is then condensed back into the water, leaving behind impurities, including fluoride.
  • Deionization Systems: These water treatment systems remove ions, specifically salts and minerals, from water through ion exchange.
  • Activated Alumina: This is a type of ceramic material that is specifically designed to remove fluoride from water. Activated alumina filters are typically used in large-scale water treatment plants but can also be used in home filtration systems.
ZeroWater 5-Stage Filter | My Dental Advocate
Source ZeroWater

Household Solutions for Removing Fluoride

  • Using fluoride-removing filters or pitcher inserts (ZeroWater)

Do your research and consider the alternatives for removing fluoride from drinking water, thinking about each option’s effectiveness, cost, and practicality. Additionally, it’s important to note that some options may not effectively remove all forms of fluoride and may not remove other impurities and contaminants in water.

The Importance of Clean Drinking Water

Access to clean and safe drinking water is crucial for good health and well-being. Clean drinking water is essential for hydration, and it also plays a role in preventing certain diseases and conditions.

  • Water helps regulate body temperature
  • Water helps transport nutrients and waste products
  • Water helps lubricate joints and tissues
  • Water aids digestion and elimination

Disease Prevention

  • Water helps prevent dehydration, which can lead to serious health problems
  • Water helps prevent certain waterborne illnesses and diseases
  • Water helps prevent chronic conditions such as kidney stones and urinary tract infections

Ensure that the drinking water we consume is clean and free from impurities and contaminants. This includes using water filtration systems, boiling water, or alternative household solutions to remove impurities from drinking water. Drinking clean water can improve health and well-being and is essential to a healthy lifestyle.

The Controversy Surrounding Fluoride in Drinking Water

The controversy surrounding fluoride has led to several studies on the safety and efficacy of fluoridation. While some of these studies have found that fluoride can benefit oral health, others have raised concerns about its potential health risks. The World Health Organization, for example, has stated that fluoride levels in drinking water should not exceed 1.5 mg/L due to the potential for adverse health effects at higher levels.

One of the primary concerns of critics of fluoride is that it is added to the drinking water supply without consent. While some believe it is necessary to improve public health, others argue that it amounts to mass medication and violates individual freedom. The controversy has resulted in many communities opting out of fluoridation or placing restrictions on the levels of fluoride that can be added to drinking water.

Fluoride Research Statistics

Consider these statistics according to a recent article about ingested fluoride:

  1. Fluoride is present in water sources ranging from 0.1 to 10 mg/L.
  2. Fluoride is added to water in the US in the range of 0.7-1.2 mg/L to prevent dental cavities.
  3. Fluoride can cause dental fluorosis, a cosmetic condition characterized by discoloration and mottling of the enamel at doses above 2 mg/L.
  4. Chronic exposure to high fluoride levels (above 4 mg/L) has been linked to several adverse health effects, including skeletal fluorosis and decreased bone density.
  5. Long-term exposure to high fluoride levels has also been associated with decreased IQ in children and cognitive decline in elderly populations.

Fluoride Key Points

Key points to fluoride use according to the American Dental Association:

  • The ADA recognizes fluoride and community water fluoridation as safe and effective in preventing tooth decay for children and adults. For more information, please visit the ADA Fluoride in Water resource page.
  • Fluoride is a mineral found in all natural water sources and is the ionic form of the trace element fluorine, commonly found in the environment; fluorine reaches water sources by leaching from soil and rocks into groundwater.
  • When used as directed or within the context of community water fluoridation programs, fluoride is a safe and effective agent that can be used to prevent and control dental caries.
  • Fluoride can be delivered topically and systemically. Topical fluorides strengthen teeth already present in the mouth, making them more decay-resistant, while systemic fluorides are ingested and incorporated into forming tooth structures. Systemic fluorides also provide topical protection because fluoride is present in saliva, which continually bathes the teeth.
  • Self-applied topical fluorides include toothpaste, mouth rinses, and gels. Professionally applied topical fluorides include higher-strength rinses, gels, and foams; fluoride varnishes; and silver diamine fluoride.
  • Community water fluoridation is the process of adjusting the fluoride content of fluoride-deficient water to the recommended level for optimal dental health, which is currently recommended at 0.7 parts fluoride per million parts water.
  • Many bottled waters on the market do not contain optimal levels of fluoride. In addition, some types of home water treatment systems (e.g., reverse osmosis and distillation systems) can reduce the fluoride levels in water supplies, potentially decreasing the decay-preventive effects of optimally fluoridated water; however, carbon/charcoal filtration systems do not remove fluoride.
  • Fluoride supplements can be prescribed for children ages 6 months to 16 years at high risk for tooth decay, and whose primary drinking water has a low fluoride concentration.
  • A potential risk of fluoride use is the development of fluorosis, which may occur when excess fluoride levels are ingested during tooth development. Fluorosis varies in appearance from white striations to stained pitting of enamel.

Fluoride Resources

Frequently asked questions (FAQ)


ZeroWater's 5-stage system claims to remove virtually all dissolved solids, making it superior to Brita's single-stage filtration.

Fluoridated water can have benefits for dental health, but excessive consumption can have adverse effects.

Fluoride is controversial due to conflicting opinions on its safety and efficacy as a cavity preventative.

My Experience & Expertise

As a dentist, it is essential to understand the effects of water filtration systems on fluoride levels in drinking water. ZeroWater’s 5-stage filtration system is NSF certified to reduce lead, chromium, PFOA/PFOS, and 99% of fluoride.

In addition, this advanced filtration system comes with a TDS meter to monitor the level of dissolved solids before and after filtering. Fluoride is a naturally occurring mineral that provides numerous benefits for oral health and is widely recommended by the US Public Health Service and World Health Organization.

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!