8 Best Fluoride Water Filters (November 2023)

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Our team has tested the fluoride removal capability of multitudes of filters, and these are the best performers.

If you want to remove fluoride from your water, you need to look beyond the more basic carbon-based water filter. Complex filter media blends are needed to reduce this contaminant – and only the very best filters are up for the job.  

Generally, only filters that use reverse osmosis, activated alumina, or char carbon, or specialized (and often patented) filtration media can target fluoride. But of all these options, which water filters are best for fluoride removal? There’s no one-size-fits-all solution, and we know that different filters appeal to different people and situations.

Given that fluoride is such a difficult contaminant to target, it’s essential that you invest wisely in an at-home water filtration system that’s capable of bringing your water’s fluoride levels down to 0. To help you out, we’ve meticulously researched and reviewed the best fluoride water filters and shared our top recommended picks in this guide. 

🥇 Best Fluoride Water Filters

📊 Comparison Chart of Fluoride Water Filters

SystemClearly Filtered Water Pitcher
Clearly Filtered Water Pitcher
Waterdrop G3 P800
Waterdrop G3 P800 Reverse Osmosis System
Epic Pure Dispenser
Epic Pure Water Filter Dispenser
AquaTru Countertop RO
AquaTru countertop reverse osmosis water filtration system
Clearly Filtered Under Sink Filtration System
Clearly Filtered Under Sink Filtration System
Pure Water Mini-Classic CT
Pure Water Mini-Classic CT
Clearly Filtered Water Bottle
Clearly Filtered Insulated Stainless Steel Filtered Water Bottle
Fluoride Reduction Rate99.5%99%98%99%93.5%90.7%99.9%99.5%
Total Contaminants Reduced365+1,000+1,000+200+83+232+1000+220+
Certifications or TestingNSF 42, 53, 401 & 473NSF 58 & 372NSF 58 (in progress)NSF 42, 53, 401 & P473NSF 42, 53, 58, 401 & P473NSF 42, 53 & 401-NSF 42, 53 & 401
Filter Life100 gal.6, 12, 24 months6, 12, 24 months150 gal.600 – 1,200 gal.2,000 Gal.n/a25 Gal.
Annual Cost~$140~$145~$180~$140~$80$396-$440n/a$25 – $50
WarrantyLifetime1 year1 yearLifetime1 yearLifetime15 years on stainless steel
2 year on electronics

🏷️ The Best Fluoride Water Filters in the News: The Latest Deals and Discounts

Below, we’ve shared all the latest news, discounts, and deals that we could find for the filters in this guide. We update the below information regularly, so you might not find the same deals if you check back later.

  • Clearly Filtered: Get 20% off on filtration systems – Black Friday Sale
  • Waterdrop: Get up to 50% off through November 26
  • RKIN: Buy 1 get 50% off another item, offer lasts till Black Friday
  • Epic Water Filters: Free replacement filter if you recycle four filters

⭐ Reviews – Best Water Filters That Remove Fluoride 2023


We used the Clearly Filtered Water Pitcher to filter water in Steamboat Springs and Fort Collins, Colorado, which contains both natural and synthetic fluoride. We were particularly keen to test this system because of just how many contaminants it can remove for a filter of its kind. The pitcher felt lightweight but sturdy out of the box, and with its 10-cup capacity, it didn’t take up too much room on our countertop and could be carried even when full of water.

When we got the Clearly Filtered pitcher to review, its upfront cost was about $90, making it one of the most affordable systems on this list. We did note that it’s generally around $30-$40 more expensive than other water filter pitchers, but with its exceptional contaminant removal abilities, this price was fair to us. Our predicted spend on filter changes is around $140, and there’s the option to save money upfront and on replacement filters by opting into Clearly Filtered’s auto-ship option. We found that each filter cartridge lasted around 3.5 months – within Clearly Filtered’s predicted filter lifespan of up to 100 gallons, or 4 months. That was slightly better than average compared to most other pitcher filters we’ve reviewed, which have a filter lifespan of 2-3 months at most.

Pitcher Only$90
Pitcher + 3 Pack$245
Pitcher + 6 Pack$395

Best For:

Folks looking for the very best fluoride water filter pitcher, offering the convenience and affordability of a water pitcher and the reassurance of third-party testing for fluoride reduction.

What We Like:
  • Removes more fluoride than any other filter we tested for this guide
  • Also removes more contaminants in general 
  • Low upfront cost
  • Portable and convenient for on-the-go filtration
What We Don’t Like:
  • Needs refilling regularly
  • Gravity filtration doesn’t offer instant access to filtered water
Brian holding the reservoir with attached filer cartridge of Clearly Filtered Pitcher

Reduces 99.5% Fluoride

The main feature that drew us to the Clearly Filtered pitcher was its ability to reduce fluoride up to 99.54%, according to the manufacturer’s independent test results. Of all the systems we tested for this review, the CF pitcher had the highest % for fluoride removal based on third-party testing. Sadly, there’s no NSF/ANSI or WQA performance certification for removing fluoride specifically, but we were reassured to see that the Clearly Filtered pitcher is WQA certified to NSF/ANSI Standard 42, for the reduction of chlorine and other aesthetic contaminants, and Standard 53, for the reduction of PFOA/PFOS. It gave us the impression that if Clearly Filtered could get certified for fluoride removal, they likely would. 

Generally, we were blown away by the CF pitcher’s ability to remove hundreds of contaminants alongside fluoride, including 99.5% lead, 99.9% PFAS, 99.9% chlorine and chloramine, VOCs, pesticides, chromium-6, and much more – essentially all the contaminants we’d be concerned about in our water. We compared the pitcher’s fluoride removal performance to some of the other most popular filter pitchers we’d tested, including Brita, ZeroWater, and PUR. The CF pitcher knocked them all out of the park – the Brita pitcher can’t remove any fluoride, while ZeroWater removes up to 99% of fluoride (although the UK website says that the same pitcher removes 41% of fluoride) and the PUR pitchers (including the PUR Plus) can’t remove fluoride at all. What did that tell us? Fluoride removal is difficult, and most pitchers can’t handle it – which makes Clearly Filtered’s offering even more impressive in our eyes. 

Simple Gravity-Fed Filtration

Performance aside, our general notes on the Clearly Filtered pitcher were that we found it easy to quickly assemble, disassemble, and use at home or take with us as a fluoride reduction solution on the go. We also noted that the pitcher was more of a convenient fluoride solution than most other filters we tested for this guide. We didn’t need to install the filter at our water line – we simply assembled the pitcher in less than five minutes, primed the filters (a speedy process thanks to the included reusable priming bag), and filled the pitcher with water. Changing the filters was a simple matter of two clicks.

As we anticipated, the speed of water filtration was pretty slow and steady. The slower water filtration speed could be a downside for some people – don’t expect instant access to water. But we knew from past experience reviewing gravity filters that we’d need patience, and honestly, we’d prefer a filter with a slower flow rate that was clearly giving the water plenty of contact time with the filter media. Generally, a long water contact time means a more thorough filtration process. 

Brian pouring filtered water from Clearly Filtered Water Pitcher

Read the full review: Clearly Filtered water pitcher


We installed and tested the Waterdrop G3P800 in Parker, CO. Appearance- and function-wise, the system was nothing like we’d tested before. It’s a tankless RO system intended for under-sink installation, and features just a single sleek, space-saving unit that contains all three filters (including a carbon filter and an RO membrane). Most of the more conventional under-sink RO systems we tested took up a lot of under-sink space and were difficult to install, but the G3P800 unit’s tankless design only took up a fraction of our available space and required a much less challenging install. 

It does have a few downsides compared to the Clearly Filtered pitcher, though, and price is one of them. During our review period, the unit cost just under $1,000 upfront, and we estimated that we’d spend around $155 per year on filter replacements (including 2 pre-filters, 1 post carbon block filter, and the RO membrane). We also wish that the remineralization post-filter was included in the upfront spend and not an optional add-on at an extra cost, since reverse osmosis removes healthy minerals from water, which can affect its taste. Though expensive, we still concluded that the Waterdrop G3P800 is fantastic value for money for anyone who wants a modern, more efficient take on the reliable RO process, which offers guaranteed removal of the majority of TDS – including fluoride.

Remineralization Filter$29.99Adding minerals back to water
Refrigerator Connector$32.99Connect RO system to refrigerator water line
Buying Tip: Spend that extra $30 on the remineralization post-filter. You’ll much prefer the taste and quality of your purified RO water with added minerals. 

Best For:

Anyone who has the budget for the very best of the best under-sink reverse osmosis system with an official NSF certification for fluoride removal (very rare!).

What We Like: 
  • IAPMO certified to remove 99% fluoride
  • Also removes nearly all dissolved solids & purifies water
  • Good efficiency ratio
  • Modern and space-saving
What We Don’t Like: 
  • Wastes water during filtration process
  • Expensive
Waterdrop g3 p800 reverse osmosis system installed under kitchen sink

Reduced 100% Fluoride 

As we expected from a reverse osmosis system, the G3P800 can reduce the majority of dissolved solids in water, including 99% of fluoride. Even better, the system has been officially IAPMO tested and certified to the following NSF performance Standards: Standard 42, for aesthetic contaminants, and Standard 58, for reverse osmosis performance, including fluoride removal. We see official certifications as the most reassuring proof of performance that a water filtration system can have, so if you want to be certain that your chosen filter performs as advertised, the G3P800 is a solid choice. 

We wanted to see how the G3P800 performed when treating our own water supply, so we tested our water before and after using the system. Our unfiltered tap water contained 0.3 mg/L of fluoride pre-filtration, and after it had been filtered by the Waterdrop unit, it contained 0 mg/L of fluoride, meaning that the system had effectively removed 100% of this mineral. It removed other contaminants effectively, too, including 100% arsenic and lead (down from 0.0029 mg/L and 0.0008 mg/L), as well as copper, barium, nitrate, TDS, and more.  

Here’s a summary of the performance of Waterdrop G3 P800 as assessed through our third-party laboratory analysis.

ContaminantPre-FiltrationPost-Filtration % Reduction
Total Dissolved Solids84 PPM15 PPM82.14%
Arsenic0.0029 PPM0 PPM100%
Barium0.0283 PPM0.0033 PPM88.34%
Calcium20.2 PPM2.6 PPM87.13%
Chloride2.2 PPM0 PPM100%
Copper0.203 PPM0 PPM100%
Fluoride0.3 PPM0 PPM100%
Lead0.0008 PPM0 PPM100%
Magnesium2.13 PPM0.27 PPM87.32%
Manganese0.0048 PPM0 PPM100%
Nitrate (as N)1.1 PPM0.1 PPM90.91%
Potassium2.12 PPM0 PPM100%
Selenium0.0015 PPM0 PPM100%
Sodium9.33 PPM1.65 PPM82.32%
Strontium0.199 PPM0.025 PPM87.44%
Sulfate7.8 PPM0 PPM100%

Good Efficiency & Water Production Rate

There are a few other performance features – both good and bad – that we noted about the GSP800. Like all RO systems, the unit wastes water during the pure water production process, and there are plenty of fluoride water filters on this list that waste no water whatsoever for folks who want to avoid this. That said, its 3:1 pure water to wastewater efficiency ratio is one of the best ratios we’ve seen for reverse osmosis systems, which is likely helped by the fact that the unit uses a DOW® reverse osmosis membrane with a higher quality and a longer life, helping it to remove all contaminants with accuracy and efficiency. We were also impressed with the  800-gallon-per-day water production rate, which is faster than any other point-of-use tankless reverse osmosis system we’ve ever tested. Plus, from an ease-of-use perspective, we enjoyed monitoring our water’s TDS with the two built-in TDS meters – on the body of the unit and one on the smart faucet – so we always knew whether the system was performing properly.  We also found the built-in filter life tracker handy, eliminating the need for us to set calendar reminders to change our filters.

Waterdrop g3 p800 smart faucet TDS reading

Read the full review: Waterdrop G3 P800 Review (2023)


We tested the RKIN U1 on our water in Steamboat Springs, CO, and found its modern take on the classic reverse osmosis process refreshing. Unlike the Waterdrop unit, the U1 is a freestanding system that doesn’t connect to a waterline. Instead, we installed it on our kitchen countertop and plugged it into a power supply (it uses an electric pump to send water through the filters). After we’d assembled the unit, we simply filled it with water and switched it on. Straight away, we loved the filtered water temperature selection and the various presets on the smart display, and the filter life indicator, which changed color to tell us when the filters needed replacing. 

There are a few particularly smart features of the RKIN U1, including hot and cold filtered water dispensing, hydrogen technologies, remineralization, and more. So we weren’t surprised at the $575 price tag (at the time of our review). It’s around half the price of the Waterdrop G3P800, but it’s still a costly investment. Plus, our projected annual maintenance spend of $100-$150 was quite high, too, so this is a unit for somebody with a bigger budget for sure.  

2-Year Filter Bundle$290
Turntable $260

Best For:

Folks who want a modern countertop RO fluoride removal solution that’s more high-tech and offers more performance features than similar models.

What We Like:
  • IAPMO tested for 98% fluoride removal
  • TDS reduction of up to 94%
  • Numerous smart features, including filtered water at your chosen temperature
  • Decent efficiency ratio
What We Don’t Like: 
  • Quite costly
  • Requires lots of tank empties and refills
Brian holding the RKIN U1 from end to end

Up to 98% Fluoride Removal

The main reason for producing this guide was to compare the fluoride removal abilities of the best filters for this purpose, so for us, the RKIN U1’s IAMPO-tested ability to remove 98% fluoride was its main selling point. We reached out to RKIN to learn more about the U1’s testing, and we were told that they’re currently in the process of obtaining an NSF certification for its performance – even better. Alongside fluoride, the unit also has third-party IAPMO testing for the reduction of lead, chromium 3 and chromium 6, TDS, PFOS, and PFOA. So, as we expected given its reverse osmosis performance, it’s an all-rounder. 

You know we like to validate testing claims where possible, and we were able to conduct our own lab testing to see whether the U1 could remove fluoride from our own water source. Our initial water’s fluoride concentration came in at 1.5 mg/L, and post-filtration, this had been reduced to 0 mg/L, meaning we got the best results: 100% fluoride removal. Alongside fluoride, the U1 also removed 100% of uranium, chloride, molybdenum, zinc, copper, and phosphorus, as well as nitrate, TDS, and more. Our water tasted clean, fresh, and chemical-free – much purer than our unfiltered tap water. 

Examine our laboratory testing data for the RKIN U1 below.

ContaminantPre-Filtration Post-Filtration % Reduction
Barium0.014 PPM 0.0087 PPM 37.86%
Calcium23.9 PPM3.6 PPM84.94%
Chloride9.2 PPM0 PPM100%
Copper0.0525 PPM0 PPM100%
Fluoride1.5 PPM0 PPM100%
Lead0.0009 PPM0 PPM100%
Magnesium6.08 PPM0.39 PPM93.59%
Molybdenum0.0047 PPM0 PPM100%
Nitrate (as N)2.1 PPM0.2 PPM90.48%
Phosphorus1.1 PPM0 PPM100%
Sodium9.91 PPM1.2 PPM87.89%
Strontium0.108 PPM2.42 PPM+2140.74%
Sulfate7.6 PPM1.6 PPM78.95%
Total Dissolved Solids112 PPM23 PPM79.46%
Uranium0.0182 PPM0 PPM100%
Zinc0.559 PPM0 PPM100%

Unique Countertop Purification

In terms of the RO filtration process, the RKIN U1 isn’t too different from other RO systems we’ve tested. It contains the three key filtration stages we expect to see for reverse osmosis: a sediment filter, an RO membrane, and a carbon filter. But we were the most intrigued to test the system’s two less common additional filtration stages: the alkaline post-filter (which isn’t guaranteed in all RO systems or is an add-on, as with the Waterdrop system), and a hydrogen infusion filter (a truly unique treatment stage that we’ve only ever seen on much more expensive systems, making the U1 something really special in this category of filters). The remineralization filter made our water pleasantly alkaline, and the hydrogen filter gave our water a negative ORP reading of 340. 

We also wanted to test the U1 on two more important performance factors for RO systems: efficiency ratio and water delivery speed. This RKIN unit doesn’t quite compare to the Waterdrop system’s 3:1 pure-to-wastewater ratio – it has a 1:1 ratio, which meant that 1 gallon of our water was wasted for every 1 gallon purified. This is still far better than the 1:4 efficiency ratio of a conventional RO system, but we still found that we had to regularly empty the wastewater tank as we were using the system throughout the day. The 75 GPD water flow is also significantly slower than the Waterdrop system’s, but this wasn’t an issue for us – we generally found that enough purified water was always available when we wanted it. 

Read the full review: RKIN U1 Countertop Reverse Osmosis System Review


We noted a few things about the Epic Pure dispenser compared to the other filters we tested. Based on our analysis of the dispenser’s third-party testing data (more on this later) we knew that it removed fewer overall contaminants than our top choice, the Clearly Filtered pitcher, but that certainly wasn’t to say it was lacking – it’s tested to remove 200+ contaminants and has great fluoride reduction abilities. Upon unboxing, we were pleased with the unit’s bigger filtered water capacity of 1.5 gallons, which meant fewer refills for us, although the filter’s 3-4 month lifespan wasn’t anything special. 

We know that many folks don’t want to spend a fortune on a fancy system with all the frills when their priority is just to remove fluoride and make their water safe to drink. We identified the Epic Pure dispenser as an ideal solution for smaller budgets, costing just $75 at the time of our review. We found that we could save even more money upfront by subscribing to receive a replacement filter every 2-6 months with Epic’s Clean Water Club, which took the initial price down to $60 and knocked 20% off replacement filters. Our estimated annual spend, given the average 3-4-month filter life and our review of filter prices, was about $160.

Best For:

Anyone looking for the best-value, no-install portable fluoride water filter that has a bigger filtered water holding capacity than the Clearly Filtered pitcher, at the same great value for money.

What We Like: 
  • Tested to remove up to 97.88% fluoride
  • Also removes 200+ other contaminants
  • Portable like the Clearly Filtered Pitcher, but with a bigger holding capacity
  • Budget-friendly
What We Don’t Like: 
  • No official certifications for contaminant removal
  • Slower rate of filtration
Epic Pure Water Filter Dispenser on countertop

Removes 97% Fluoride

Our priority was to look for performance certifications or at least independent testing to NSF/ANSI Standards when finding the best water filters for fluoride removal in this guide. We were pleased to see that the Epic Pure Dispenser has independent testing to NSF/ANSI Standards 42, 53, and 401 for the removal of more than 200 contaminants, including up to 97.88% fluoride, as well as chlorine, arsenic, nitrate, lead, PFAS, VOCs, and most other contaminants we were concerned about. We’d love to see Epic obtain an official performance certification to give us that extra reassurance, and we plan to test our own water to see specifically what the Pure Dispenser can remove in our situation. 

Simple, Practical Design

Since we knew the Epic Pure Dispenser was a more affordable option, we didn’t expect all the bells and whistles of a more expensive system. But all the important features were there, including the high-quality filter, which is one of the best we’ve tested for contaminant removal in a gravity system of this kind. There were a few other features that we found helpful, too, including the filter change timer, which meant we never had to guess when replacement filters were needed. We do wish the filters lasted a bit longer, though – their rated lifespan is 150 gallons, and ours lasted just over 3 months before we needed a replacement. As with all systems, the exact filter lifespan depends on your water usage and quality, but from experience, we definitely were more aware of when this dispenser’s filters needed changing due to the gravity filtration process. Once the filter got too clogged, the filtration speed became too slow to put up with. 

We found the Epic dispenser easier to clean, again thanks to its simple design, as well as the fact that it’s dishwasher safe (although for clarity, Epic recommends hand-washing it when possible). The dispenser was the perfect size for storing on the middle shelf in our fridge, and we were pleased to be able to return our used filters back to the manufacturer and take advantage of their recycling program, which entitles you to a free filter for returning 4 used filters.

Water filter pitcher cartridge recycling program

Read the full review: Epic Pure Filter Dispenser Review


F− Reduction Rate93.5%
Total Contaminants Removed83+
Certifications or TestingNSF 42, 53, 58, 401 & P473
Filter Life600 – 1,200 gal.
Warranty1 year
Annual Cost~$80

When we got the AquaTru for testing, we had the choice between four different models: 

  • The Classic (AquaTru’s baseline model)
  • The Classic Connect (the same as the Classic but connects via WiFi to the manufacturer’s app and provides info on filter lifespan, water consumption, and more)
  • The Alkaline Classic (like the Classic but with an alkaline VOC mineral boost filter, rather than the standard VOC filter)
  • The Alkaline Connect (comes with both the WiFi compatibility and the alkaline VOC mineral boost filter)
AquaTru ConfigurationsInclusionsPrice
ClassicRO + VOC Filter$449
ConnectWifi RO + VOC Filter$499
Alkaline ClassicRO + Alkaline Boost VOC Filter$469
Alkaline ConnectWifi RO + Alkaline Boost VOC Filter$519

We found that there weren’t many differences between the models, but different models were likely best for different situations. Based on our research, we’d recommend the Classic for folks looking for the most affordable model – it removes just as much fluoride as the other models, so if you’re not bothered about extras or add-ons, there’s no need to spend your money. However, we recommend considering the upgrades – especially the models offering remineralization (with calcium and magnesium, NOT fluoride) to further improve your water quality. Filters last 6-24 months, depending on the filter in question, and our projected annual maintenance spend was manageable, at around $80.

We went for the Alkaline Classic because, as we mentioned, we prefer the taste and health benefits of remineralized RO water, and we’d recommend this model to anyone who can afford to spend an extra $20 upfront on remineralization. At the time of our review, prices ranged from $469 to $519, so you’re paying just slightly less upfront for this system than you are for the RKIN U1. What might sway you towards this system when it lacks the U1’s fancy hot and cold water dispensing and hydrogen infusion? You may prefer the fact that the AquaTru unit has an official IAPMO certification for fluoride removal. We’ve discussed performance in more detail later. 

Best For:

People looking specifically for a reverse osmosis fluoride water filter that has a certified performance without the time-consuming, permanent installation of an under-sink RO filter.

What We Like:
  • Removes 93.5% fluoride
  • Also rejects the majority of other dissolved solids with RO membrane
  • One of the lowest wastewater ratios we’ve seen (only 20% is lost)
  • NSF certified performance
What We Don’t Like: 
  • Even though it’s efficient, it still wastes water
  • Doesn’t remove quite as much fluoride as competitors
Brian installing the filter cartridges of AquaTru Countertop RO System

Certified Fluoride Removal

What makes the AquaTru unit a standout for fluoride removal? In our eyes, it’s the fact that the unit is officially certified to NSF standards by IAPMO for the removal of 83 contaminants, including 93.5% fluoride. We had the chance to test this system’s performance on our own water supply, taking samples of our water before and after filtration. Our unfiltered water contained elevated levels of fluoride at 1.5 mg/L, and we were pleased to see that our filtered water contained 0 mg/L of this mineral, meaning that the AquaTru system had effectively removed 100% fluoride. The system also removed 100% lead, chloroform, and THMs (two disinfection byproducts), and around 64% TDS, so we definitely felt reassured that it was pulling out all the stops performance-wise. 

See the results of our third-party laboratory testing for AquaTru in the table below.

ContaminantPre-FiltrationPost-Filtration% Reduction
Barium0.014 PPM0 PPM100.00%
Calcium23.9 PPM0.7 PPM97.07%
Chloride9.2 PPM0 PPM100.00%
Copper0.0525 PPM0 PPM100.00%
Fluoride1.5 PPM0 PPM100.00%
Lead0.0009 PPM0 PPM100.00%
Magnesium6.08 PPM0.36 PPM94.08%
Molybdenum0.0047 PPM0 PPM100.00%
Nitrate (as N)2.1 PPM0 PPM100.00%
Phosphorus1.1 PPM0 PPM100.00%
Sodium9.91 PPM0 PPM100.00%
Strontium0.108 PPM0 PPM100.00%
Sulfate7.6 PPM0 PPM100.00%
Total Dissolved Solids112 PPM12 PPM89.29%
Uranium0.0182 PPM0 PPM100.00%
Zinc0.559 PPM0 PPM100.00%

Plus, it has a better pure water-to-wastewater ratio than our top under-sink RO system, the Waterdrop G3P800 (4:1 versus 3:1), and a much better efficiency ratio than our top countertop RO system, the RKIN U1 (4:1 versus 1:1). Still, this unit came second-place to the U1 for us because it’s not as smart or modern, and it doesn’t have built-in remineralization (this is an add-on at an extra cost) or hydrogen infusion (this isn’t available at all). 

If you’re wondering about water delivery speed, the AquaTru uses a pressure pump to boost the speed of filtration, but this purified water then sits in a tank, which is dispensed with gravity pressure. We found that the pressure would decrease as the tank was emptied, so it’d take longer to dispense water from an emptier tank.

Read the Full Review: AquaTru Countertop RO Filter Review


The Clearly Filtered Under Sink Filtration System might not reduce quite as much fluoride as our top choice, the Clearly Filtered pitcher, (just under 91% vs 99.5%), but we wanted to try it out because of the unique perks of an under-sink system like this one – primarily on-demand filtration (just turn on the tap for instant access to water). We were also blown away by the contaminants that the CF Under-Sink System had been third-party tested to remove: a total of 232+ impurities. We installed the unit and tested it on our municipal water supply in Fort Collins, CO. 

First, let’s talk about what we received and how much it cost. There are three stages within this filter system: the priming carbon filter, the heavy metals and VOC filter, and the fluoride filter (yes, the unit has a dedicated fluoride filter, which is super reassuring if fluoride removal is your most desired outcome). When we got the system to review, the upfront cost was $495. The filters have a 2,000-gallon lifespan – in our situation, we estimated they’d last 12-15 months, but if you use more water than average, they might need replacing after as little as 9 months. Our projected annual spend was within $200. 

Best For:

Folks looking for an on-demand fluoride filtration solution that reduces more than 90% fluoride and costs about half the price of the best under-sink RO system.

  • Reduces 90% fluoride
  • Also tested to remove 200+ other common contaminants
  • Tested to various NSF Standards for performance
  • Impressive 2,000-gallon (9-15-month) filter lifespan
  • Reduced our water flow by around 50%
  • Three separate filters to replace = more maintenance
Brian pointing the filter stages of Clearly Filtered Under Sink System

Dedicated Fluoride Removal

As we mentioned, the Clearly Filtered Under Sink System has a filter that’s specifically designed for filtering fluoride, which means it offers more focused fluoride removal with a filter media specifically designed for this purpose, rather than fluoride removal being an added benefit of a more generic media. According to independent lab results, the system can reduce fluoride by 90.65%, as well as targeting the other contaminants we were most concerned about in our water, including lead, PFAS, VOCs, chromium-6, chlorine (which it’s WQA certified to remove), pesticides, and much more. 

On-Demand Water Filtration

Performance aside, let’s look at how the Clearly Filtered Under Sink System worked in our home. We installed it ourselves in less than 30 minutes, and we think most people would find it easy to DIY install, regardless of handy skills. There was no separate faucet or drain line to install – we just needed Teflon tape and a wrench. Plus, we didn’t have to deal with any of the side effects of an under-sink RO system like the Waterdrop unit, including mineral loss (the CF system retains healthy minerals) and wastewater (this system uses filtration, not membrane separation, so 100% of the water was delivered to our faucet). 

Once the unit was up and running, we were keen to see how the system affected flow rate from our faucet, since the manufacturer claimed it would only reduce flow rate by about 20%. We timed how long it took to fill a glass before filtration, then did the same test after installing the system. Our initial time was around 4 seconds, while the time with the filter installed was around 8 seconds, meaning that our water flow had been reduced by about 50% – not quite the 20% as claimed by Clearly Filtered, but still adequate for our situation. 

Read the Full Review: Clearly Filtered Under-Sink System Review


There are a few features that make this water distiller better than the other filters on this list – and a few setbacks, too. From our own experience testing and comparing different water treatment solutions, we know that distillation reduces up to 99.99% of all total dissolved solids, including fluoride, making it one of the most effective choices on this list. BUT, it takes this unit 3.5 hours to produce just 0.8 gallons of water, so it’s the slowest water purification method by far. 

The distiller isn’t cheap, either, costing $750 upfront. The good news is that our projected annual spend was at least the lowest on this list: $0. There are no filters to change, so as long as you have access to electricity and clean the unit as and when needed, it’ll provide the same thorough water purification year after year. 

Best For:

Anyone who wants to remove fluoride and almost every other drinking water contaminant, and doesn’t mind waiting a long time for the results.

What We Like: 
  • Removes up to 99% fluoride
  • Purifies water
  • Costs nothing to maintain
  • Just needs an electricity connection
What We Don’t Like: 
  • Very long water purification time
  • Expensive upfront cost

Reliable Water Purification

As a water distiller, the Pure Water Mini-Classic CT boils water, causing steam to rise. The steam travels into a condensing coil, where it is cooled by a fan and condenses back into purified water droplets. There’s also an optional carbon filter in the spout that removes lingering VOCs and polishes water, giving a better overall taste. Here’s where you could choose to spend a bit of money (replacement packs for water distillers cost $11-$25 depending on who you buy from and how many are in the pack), but we don’t think the carbon filter is essential in most cases – it just depends on what’s in your water. If fluoride removal is your priority, you don’t need the separate filter for this purpose because the distillation process itself has been proven to effectively remove all minerals, including fluoride.

We couldn’t find any test results for the Pure Water Mini-Classic CT online, which is a shame. But like all distillers, this countertop distiller reduces virtually 100% TDS, including waterborne pathogens, minerals, salts, chemicals, metals, and more. That’s everything removed, so expect your water to taste a bit flat due to the lack of minerals. 

Our Tip: Buy some mineral drops to add to your water post-distillation, which will improve its taste and make it healthier for drinking.

We’ve tested a number of water distiller units in our time, and they tend to be a bit bulky and clunky in design. We preferred the Pure Water Mini-Classic distiller’s design because the distilled water container sits in a dedicated slot in the unit itself, which gives it a tidier, more compact appearance. We identified a number of features that make this countertop distiller safe and easy to use: the boiling chamber is removable for quick cleaning, the safety shut-off and automatic timer prevent potentially dangerous system faults, and the 1-gallon glass jar is easy to carry and pour from.


Clearly Filtered offers filtered water bottles in a few different materials, but the stainless steel bottle is our favorite because we found it to be the sturdiest and most durable, and we liked that it could keep our water cold for up to 24 hours. Like many water bottle filters, the Clearly Filtered Bottle uses straw filtration to send water through the straw, giving instant access to filtered water. Something we did find from personal testing is that it takes a bit of work to drink from this bottle. Because the filter is attached to the straw, it was our own sucking force that sent water up through the filter and the straw, so sipping from the straw required more effort. 

At the time of our review, we could buy the bottle in two sizes: 20 ounces and 32 ounces. There was also a 12-ounce kids’ version. We went for the 32-ounce bottle, which costs just under $70, since this could hold almost 1 liter of water. We preferred the largest bottle size because it reduced how often we needed to refill it in public. But if you have a smaller bag or don’t want to be weighed down by a heavy bottle, we’d recommend going for the smaller 20-ounce version, which costs around $60. The estimated filter lifespan is about 25 gallons, or 6 months, and our annual projected spend on maintenance was pretty low, at $25-$50. 

Clearly Filtered Insulated Bottles OptionsPrice
20 oz Bottle$65
32 oz Bottle$75

Best For:

Anyone who wants the most convenient, portable fluoride reduction solution from a reliable brand, which is ideal for vacations, travel, or simply taking to work.

What We Like: 
  • Reduces 99.5% fluoride
  • Also removes 220+ other contaminants
  • Convenient personal filtration solution
  • Affordable
What We Don’t Like: 
  • Bottle can only be used with straw due to filter design
  • Sipping from the straw requires effort
Features of the clearly filtered water bottle

99.5% Fluoride Reduction

Once again, Clearly Filtered dominated another water filter category for fluoride removal and overall contaminant removal. According to third-party test results shared online, the Stainless Steel Filtered Water Bottle can reduce up to 99.5% fluoride. This was super reassuring to us, especially since we’d be taking our water bottle with us to work and on the go, so we’d likey encounter water supplies with varying levels of fluoride day-to-day. The filtered water bottle has also been tested to NSF Standards 42, 53, and 401, to reduce 220 contaminants, including >99.5% chlorine, >99.3% lead, >99.2% pharmaceuticals, pesticides, herbicides, VOCs, and more. Again, this is what we wanted to see given that we wouldn’t only be drinking water from a single source – we could potentially come across water supplies contaminated with a variety of contaminants, and it was reassuring to know that the CF Water Bottle could target most of the impurities we were concerned about.  

Read the full review: Clearly Filtered Water Bottle Reviews

📚 Methodology: How We Shortlisted & Tested The Best Fluoride Water Filters

When we reviewed, tested, and ranked the best fluoride filters for this guide, we used the following key ranking factors as reference: 

Filter Type

First, we started by considering the different filters available for removing fluoride, and how different systems might be better for different budgets and situations. 

We identified the following key filters for this purpose: 

  • Countertop water filters – including gravity filters and revere osmosis systems, which are standalone units (some require an electricity connection).
  • Under-sink water filters – connected to the cold water line underneath the kitchen sink. When you turn your faucet on, water flows through the filter and back into the pipe, where it comes out of the kitchen sink faucet.
  • Water distiller units – work by boiling water and evaporating it into steam, and condensing that steam back into liquid form. During the evaporation process, many contaminants – including fluoride – remain left behind in the boiling chamber.
  • Faucet water filters – compact filters that attach to the end of a kitchen faucet. When a faucet is turned on, water flows through the faucet, and then the filter, before coming out of the filter’s spout. 
  • Water pitcher filters – the cheapest option for removing fluoride. 

Not all of these water filter types are guaranteed to remove fluoride, but listing our possible options gave us a good starting point from which we could conduct further research and find the best products for different circumstances. 

% of Fluoride Removal 

Since fluoride removal was our main outcome when reviewing the filters for this guide, it was our most important ranking factor overall. 

We identified that the very best fluoride removal water filters could remove at least 85-90% fluoride, so this is what we looked for when shortlisting the systems for this list.  

Testing and/or Certifications

Another super important consideration we made was whether or not our selected fluoride filters had third-party testing or certifications as proof of their performance. Our research told us that generally, a water filter can’t be specifically certified for fluoride removal, although it is possible for some systems –  for instance, a reverse osmosis system can be certified to NSF Standard 58 for RO purification, with fluoride being one of the contaminants that it’s tested to remove. 

However, since many of the filters we reviewed were non-RO systems, our priority was to look for third-party laboratory testing for fluoride removal. This gave us the reassurance that a filter’s performance had been validated by a third party, rather than only having the manufacturer’s word to go off. 

Filter Lifespan

We know that most people would prefer to commit to as little maintenance as possible for a fluoride water filter, but many folks would be happy to increase their maintenance for specific unique benefits. For instance, water filter pitchers were among the cheapest filters we tested, but a side effect of their affordable upfront cost was their shorter 2-4-month filter life. Also, reverse osmosis systems removed the most contaminants from our water, but they typically had 3-4 separate filters that all needed changing according to their own schedules. 

Of the fluoride removal filters we tested, the average filter lifespan was 3-12 months. Generally, we’d know when we needed to replace a filter because it became significantly slower at filtering water.

Other Contaminants in Water

Our main goal was to find water filters that could best remove fluoride from our water, but we also considered the other contaminants that these flyers could potentially remove. It’s unlikely that you’re only dealing with fluoride in your water – for instance, our water source also contained trace levels of lead, disinfection byproducts, and nitrate. Our advice is to search online for your area’s most recent Water Quality Report or test your water at home, then make a note of any other contaminants that you want to remove. 

In our testing, we found that many of the best fluoride water filters could remove tens, or even hundreds, of other contaminants, including lead, PFAS, chromium-6, chlorine and chloramine, pesticides, VOCs, pharmaceuticals, disinfection byproducts, and more. Second-place to fluoride removal, we ranked systems that were tested to remove the most contaminants higher on our list. 


As we mentioned earlier, we know that not everyone has the same budget for a fluoride water filter, and that’s why cost was something else we considered when ranking the filters in this guide. 

Our aim wasn’t to look for the most affordable filter we could find, at the expense of everything else – contaminant removal, material quality, filter life, and so on. Instead, we researched the average prices for the different fluoride filters we’d identified, then looked for the best-value filters within these categories based on their performance and unique features. 

We’ve featured both costly and more affordable systems on this list. For instance, reverse osmosis systems are on the more expensive end, but we knew that some folks would rather spend a lot of money upfront for the reassurance of purified water. On the other end, faucet filters and pitcher filters are more affordable, but we didn’t compromise here – our shortlisted systems still had to meet our high expectations for removing fluoride and other contaminants. 

Company Reputation & Customer Reviews

Finally, we wanted to make sure that the filters we were recommending were generally favored by customers and were sold by reputable manufacturers. 

While our reviews were largely based on our own research and testing, we wanted to ensure that we took the general customer experience into account when ranking the filters on this list. Brand reputation was also an essential factor for us to keep in mind – we only reviewed filters offered by manufacturers with a history of making quality products and offering quality customer support. 

❔ Frequently Asked Questions

What is the best water filter to remove fluoride?

The best water filter to remove fluoride depends on your budget, how you prefer to treat your water, and what other contaminants (if any) you want to remove. For instance, if you want an affordable solution to reduce fluoride in your water, a water filter pitcher like the Clearly Filtered pitcher is best. Or, if you want to thoroughly purify your water, removing fluoride and all other impurities, a reverse osmosis system like the Waterdrop G3P800 is best. 

Are there any water filters that remove fluoride?

Yes. While fluoride is more difficult to remove than many other contaminants, there are a few water filters that can remove this mineral. Don’t assume that your chosen water filter is capable of fluoride removal – look for test data that lists the contaminants that the filter can remove, and make sure it can reduce fluoride by at least 85-90%. 

Which water filter pitchers remove fluoride?

A few water pitchers can remove fluoride, including the Clearly Filtered Pitcher (our top recommendation, which can reduce >99.5% fluoride), the ZeroWater Pitcher, and the Epic Pure Pitcher.

Do Brita water filters remove fluoride?

No, Brita water filters don’t remove fluoride. Brita pitchers can only remove a handful of contaminants, and fluoride isn’t one of them. 

Is it good to filter out fluoride?

It’s not technically essential to filter out fluoride, but we personally don’t feel comfortable drinking this mineral in our water. There are several possible health risks of fluoride that make us opposed to ingesting it. Our advice is to do your research and make a decision for yourself whether or not you want to remove it from your water.

🤓 About Our Experts

WaterFilterGuru.com‘s Founder and lead Water Filter Specialist Brian Campbell researched, reviewed, and tested the water filters featured in this guide. You can learn more about Brian in the author bio below. 

  • Brian Campbell
    Founder, Water Treatment Specialist

    Brian Campbell is a water treatment specialist and water expert based in Denver, Colorado. He's always been obsessed with water quality, and has spent years testing all kinds of treatment devices from simple pitchers and portable devices to complex whole home systems.

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