6 Best Fluoride Water Filters (Based on Our Lab Testing)

🤝 Our content is written by humans, not AI robots. Learn More

The best fluoride water filters completely eliminated fluoride from our water in our testing, and they also reduced dozens of other common drinking water contaminants.  

We test all the water filters in our reviews and guides using our own metrics-driven assessment process. 

All the filters in this guide were personally tested by Brian Campbell, an experienced WQA Certified Water Specialist (CWS) and Certified Water Treatment Representative (CWR) who has been reviewing water filters for over a decade.

Our Testing & Selection Process

The 6 Best Water Filters that Remove Fluoride

ProductAquaTru countertop reverse osmosis water filtration system
Waterdrop G3 P800 Reverse Osmosis System
Waterdrop G3 P800
Clearly Filtered Pitcher
Clearly Filtered Pitcher
ZeroWater Ready-Pour Pitcher
ProOne Big+ gravity-fed water filter
ProOne Big+
Price$449.00+$539 - $999$90.00$749.95$39.99229.95+
CertificationsNSF/ANSI 42, 53, 58, 401, and P473NSF/ANSI 58, 372NSF/ANSI 42, 53-NSF/ANSI 42, 53NSF 42 (materials safety only)
Filter Capacity600 – 1,200 gallons550/ 1100/ 2900 gallons100 gallons792 – 1,200 gallons20 - 40 gallons1,00-1,200 gallons
Cost per Gallon$0.11$0.11$0.55$0.08$0.70$0.41
Warranty1 year1 year2 years1 year90 days5 years
Read ReviewAquaTru reviewWaterdrop G3 RO reviewClearly Filtered reviewRKIN U1 reviewZeroWater pitcher reviewProOne Big review

AquaTru Performance

We awarded the AquaTru a 9.90 for its health-related contaminants reduction. In our testing, it eliminated 100% of fluoride, as well as all the other contaminants with possible health effects detected in our water: lead, uranium, strontium, molybdenum, and barium.

The system got an equally high score of 9.90 for reducing aesthetic contaminants, owing to its 100% chlorine reduction. 

What really impressed us about the AquaTru is that it has been IAPMO certified to NSF Standards 42, 53, 58, 401, and P473 for the reduction of all 83 contaminants that AquaTru claims it can reduce. The system has also been certified for materials safety and has an NSF 372 certification for lead-free design.  

Wastewater is a side effect of the RO process, and conventional RO systems are known for being inefficient and wasteful. The AquaTru is, by contrast, the most efficient countertop RO system we’ve tested, with a 4:1 recovery rate, meaning that only 1 gallon of water is wasted for every 4 gallons purified. 

Setup and maintenance were a breeze with this unit. It’s a plug-and-play machine that arrived partially assembled, and maintenance was easy and surprisingly affordable given that we had multiple filters to replace. We awarded the AquaTru a 10.00 for setup and a 9.75 for maintenance. 

We think the AquaTru just makes sense for anyone who wants to eliminate fluoride and all the other impurities in their water, using a system that has been extensively certified for its performance and design.

Health Related Contaminants9.90
Aesthetic Related Contaminants9.90
Performance CertificationCertified for 100% of reduction claims
Filtration Rate0.08 GPM
Component QualityOutstanding
Component CertificationExceptional
Servicing RequirementsOutstanding
Costs$0.11/ gallon
Warranty Length1 year
ShippingFree shipping
Returns30 days

Waterdrop G3 P800 Performance

The Waterdrop G3 P800 received a 9.20 score for contaminant reduction. Our test data showed that it eliminated 100% fluoride, chlorine, arsenic, chloride, copper, lead, manganese, potassium, and selenium in our water.

It also reduced 90% nitrate, 88% barium, 87% calcium, magnesium, and strontium, and 82% sodium. 

We were also pleased to see that the system has been IAPMO certified to NSF 42, NSF 58, and NSF 53, for reducing fluoride, chlorine, TDS, cadmium, hexavalent chromium, and selenium. Its certifications aren’t as extensive as AquaTru’s, though. 

The G3 P800 secured a 9.70 for design. It’s a smart system, with TDS meters on the faucet and unit body for monitoring the performance of the filters, a built-in filter life tracker, and a UV purifier to protect against recontamination of the filtered water leaving the unit. It’s only missing a built-in remineralization filter – Waterdrop sells one separately at an extra cost.

Waterdrop g3 p800 reverse osmosis system UV sterilizer

Setup was trickier with this Waterdrop system, and its 7.00 score in this category reflects the challenges we faced when installing it underneath our sink. 

Installing the system took us around 1 hour 30 minutes, and connecting the pipes and drilling a hole for the RO wastewater line required some hands-on DIY work. But once the system was installed, maintenance was easy – we awarded the G3 P800 a 10.00 score because the filters were easy to change and had a low ongoing cost of just $0.11/ gallon.

Waterdrop King Tank
Overall Score: 9.10

Waterdrop King Tank

Another great offering by Waterdrop is the King Tank, a stainless steel gravity-fed countertop water filtration system, which also reduced 100% fluoride in our testing (it has dedicated fluoride filters for this purpose). Plus, the unit reduced 100% manganese, 93% copper, 40% barium, and more. It’s a more affordable alternative to RO and doesn’t waste water.

Read our full King Tank review here

We recommend the Waterdrop G3 P800 to folks who want a certified, reliable, and highly effective means of removing fluoride and many other impurities from their water supply, with the benefit of filtered water on demand from your kitchen faucet. 

Health Related Contaminants9.50
Aesthetic Related Contaminants3.50
Performance CertificationCertified for 100% of reduction claims
Filtration Rate600 or 800 GPD
Component QualityOutstanding
Component CertificationCertified
Servicing RequirementsExceptional
Costs$0.11/ gallon (w/o remineralization), $0.13/ gallon (w/ remineralization)

Clearly Filtered Performance

We gave the Clearly Filtered pitcher a score of 8.24 for contaminant reduction. As well as reducing 100% fluoride, it also eliminated uranium, chlorine, and copper, and reduced 86% barium, 67% strontium, 53% molybdenum, and 11% nitrate. 

However, 0.0054 PPM of cobalt appeared in our filtered water, which reduced its score slightly in this category.

Clearly Filtered’s WQA performance certifications (to NSF/ANSI Standard 42 and Standard 53, for the reduction of chlorine, PFOA, and PFOS) are reassuring, although again, it doesn’t quite compare to AquaTru because it’s only certified to reduce 3 out of the 365+ contaminants it’s claimed to reduce. Also, it isn’t certified for fluoride reduction, which is disappointing.

Although the CF pitcher has a more basic design than the RO systems we tested, it got one of the highest scores of all the pitchers in its category: 9.70. We noted that the pitcher’s BPA-free Tritan plastic design felt thicker, sturdier, and better-made than most of its competitors, and we were pleased to see that it’s certified both for materials safety and for lead-free design

Brian holding the Clearly Filtered Pitcher

In our testing, the pitcher filtered 0.5 gallons of water in 13 minutes and 12 seconds, giving it a filtration rate of 2.27 GPH.

We think the Clearly Filtered Pitcher is the best fluoride filter for people who don’t want the commitment of an expensive machine and prefer the simplicity and portability of one of the best-performing water filter pitchers.

Health Related Contaminants83
Aesthetic Related Contaminants99
Performance CertificationCertified for 0.82% of reduction claims
Filtration Rate2.27 GPH
Component QualityOutstanding
Component CertificationCertified
Servicing RequirementsOutstanding
Costs$0.55/ gallon
Warranty Length2 years
ShippingFree shipping all orders
Returns30 days

RKIN U1 Performance

In the contaminant reduction category, the RKIN U1 obtained a 9.00 score. It reduced 100% fluoride, lead, chlorine, uranium, copper, molybdenum, and zinc, and greatly reduced nitrate, barium, and sulfate.

But it doesn’t have a performance certification, which is why we didn’t recommend it as our top choice. 

The system is another countertop unit, so again, we found it easy to install and maintain – we awarded it 10.00 and 9.75 scores for setup & servicing. Like the AquaTru, the U1 arrived partially installed, and it has a dedicated flush function, so we didn’t have to prime or wash the filters manually. Its cost-per-gallon of $0.0809 means that it’s super affordable to maintain, even if its upfront cost is higher than any of the other filters on this list. 

We measured the U1’s filtration rate as 0.07 GPM, which was almost exactly the same as AquaTru’s (0.08 GPM). 

The U1 didn’t do as well in the design category. Despite having a few impressive design features, like its sophisticated touch-screen display panel, we weren’t blown away by its component quality. We gave it a score of 7.50 because it’s mostly made from plastic and isn’t certified for materials safety.

RKIN U1 touch screen display and buttons

Our favorite feature of the RKIN U1 was that we could dispense hot or cold water and use the different presets to dispense purified water for different purposes. We think the U1 is a worthy investment for folks with big budgets who love to own the latest high-tech products, especially people who want to be able to easily access purified hot water.

Health Related Contaminants9.30
Aesthetic Related Contaminants9.90
Performance CertificationNot certified for any reduction claims
Filtration Rate0.07 GPM
Component QualityOutstanding
Component CertificationNot certified
Servicing RequirementsExceptional
Warranty Length1 year
ShippingFree shipping on orders over $175 to lower 48 states
Returns30 days

ZeroWater Performance

ZeroWater’s score for contaminant reduction was 8.34, and, like the other filters in this guide, it reduced 100% fluoride. Other contaminants that were completely eliminated were nitrate, chlorine, barium, uranium, strontium, molybdenum, and sulfate. Plus, 97% copper was reduced. 

The filter did a really great job of reducing contaminants with health effects, but its score was impacted by the presence of 3.4 PPB of chloroform in our filtered water, which indicated that ZeroWater doesn’t effectively address disinfection byproducts. We also weren’t impressed with the filter reducing healthy minerals just so ZeroWater can claim TDS reduction down to 0. 

It was good to see that the filter has been certified to NSF Standard 42 and Standard 53 for reducing chlorine taste and odors, PFOA, PFOS, mercury, lead, and hexavalent chromium. But it didn’t get the top score here because it doesn’t have a fluoride reduction certification, and it isn’t certified for all 24 contaminants that ZeroWater says it can reduce.

The ZeroWater pitcher is the only pitcher we’ve tested so far that requires no filter prep whatsoever. We could just wash the pitcher and reservoir, install the filter, and start using it straight away – no priming, flushing, or soaking required. We gave it a 9.50 score in this category. 

We appreciated that we could use the TDS meter to determine when the filter needed changing, but the filter capacity is very low at just 40 gallons (meaning it needed replacing as often as once every 1-2 weeks). This gave it a much higher ongoing cost of $0.70/ gallon, which was almost three times the cost per gallon of its competitors. 

The ZeroWater pitcher got the best score – 10.00 – for filtration rate. It has a filtration speed of 2.62 GPH, based on its ability to filter 0.391 gallons of water in just under 9 minutes, so it’s slightly quicker than Clearly Filtered. 

We recommend the ZeroWater filter pitcher to folks who want an easy way to track their filter performance and are interested in reducing TDS alongside fluoride, at the expense of a higher ongoing cost and a shorter filter lifespan.

Overall Score8.62
Health Related Contaminants83
Aesthetic Related Contaminants99
Performance CertificationCertified for 25% of reduction claims
Filtration Rate2.62 GPH
Component QualityFair
Component CertificationCertified
Servicing RequirementsOutstanding
Costs$0.70/ gallon
Warranty LengthVessels 90 days, filters 30 days
ShippingFree shipping on orders above $60 to continental US
ReturnsNo returns

ProOne Big+ Performance

The Big+ got an 8.44 score overall for contaminant reduction. As well as reducing 100% of fluoride, it eliminated lead, copper, aluminum, and manganese in our water. But it only reduced just 47% of total THMs and 56% chloroform, and it doesn’t have a performance certification, so its score wasn’t as high as others in this category.

The system redeemed itself in our untreated water test. We awarded it a 10.00 score because it eliminated all three bacteria types that our test water contained. 

We had only positive things to say about the Big+ in the design category, and it got another 10.00 score from us. The filter elements have been NSF 42 certified for materials safety, and we noted that the unit’s stainless steel design felt sturdy and durable. 

Holding proone 2.0 cermic water filter

Setup was refreshingly easy compared to many other stainless steel units we tested. We just washed out the two chambers (which you may find tricky if you have a small sink), then scrubbed the filters with a scouring pad under running water. The whole process took less than 20 minutes thanks to the lack of filter priming required. 

There were a few categories that the Big+ performed less impressively in. The filter’s $0.41/ gallon servicing cost was higher than most other fluoride filters we reviewed, and its 0.77 GPH filtration rate was slower than many similar systems, so it got a lower score of 7.00 here. 

Because it can be used to filter untreated and treated water sources, we recommend the ProOne Big+ to anyone who wants an emergency preparedness system that they can safely use regardless of the quality of their incoming water supply.

Health Related Contaminants8.71
Aesthetic Related Contaminants9.9
Performance CertificationNot certified for any reduction claims
Filtration Rate0.77 GPH
Component QualityExceptional
Component CertificationExceptional
Servicing RequirementsGood
Warranty Length5 years
ShippingFree shipping on orders over $69.95 to the lower 48 states
Returns30 days
  • Brian Campbell
    President & CEO, CWS, CWR

    Brian Campbell, a WQA Certified Water Specialist (CWS) and Certified Water Treatment Representative (CWR) with 5+ years of experience, helps homeowners navigate the world of water treatment. After honing his skills at Hach Company, he founded his business to empower homeowners with the knowledge and tools to achieve safe, healthy water. Brian's tested countless devices, from simple pitchers to complex systems, helping his readers find the perfect fit for their unique needs.

Scroll to Top