Do Water Filters Remove Fluoride? By Filter Type and Brand
Some do. Reverse osmosis can: 178 of the 547 active NSF/ANSI 58 listings in our copy of the certification directories carry a fluoride claim. Idaho DEQ states that typical charcoal-based pitcher filters do not remove fluoride. In that copy, no PUR or Berkey listing carries one, and the one Brita listing that does is a reverse osmosis system.
Key numbers
0.7 mg/L
U.S. Public Health Service recommendation
The U.S. Public Health Service recommends 0.7 mg/L for community water systems that add fluoride.
Verified
1.5 mg/L
WHO guideline value
The World Health Organization's guideline value for fluoride in drinking water is 1.5 mg/L.
Verified
1.5 mg/L
National Toxicology Program (2024)
NTP's 2024 monograph concluded, with moderate confidence, that drinking water containing more than 1.5 mg/L is associated with lower IQ in children.
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2.0 mg/L
EPA secondary standard (non-enforceable)
EPA's secondary (non-enforceable) standard for fluoride is 2.0 mg/L, and exceeding it requires a special public notice.
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4.0 mg/L
EPA maximum contaminant level (enforceable)
EPA's enforceable maximum contaminant level (MCL) for fluoride is 4.0 mg/L, and its health goal (MCLG) is also 4.0 mg/L.
Verified
Fluoride verdicts by filter type and brand
Each row gives what the certification listings record for one filter type or brand, from our copy of the NSF, WQA and IAPMO certification directories as of 2026-10-05, and what other cited sources say.
A fluoride claim missing from our copy is not proof that a product is uncertified: our copy is one reading of each directory, on the date above.
Our copy of IAPMO's directory records each listing's product category, not the contaminants it is certified for, so IAPMO listings are reported separately: they neither confirm nor rule out a fluoride claim.
| Filter type or brand | Certification listings (as of 2026-10-05) | Other cited evidence |
|---|---|---|
| Reverse osmosis | 178 of 547 active NSF/ANSI 58 listings carry a fluoride claim; 54 more are IAPMO listings our copy records by product category only. | Idaho DEQ: point-of-use reverse osmosis and distillation have proven effective for removing fluoride. |
| Brita | One listing carries a fluoride claim: the Brita Total360 BRDROS (NSF/ANSI 58).NSF listing: Brita Total360 BRDROS | None cited on this page |
| ZeroWater | No NSF or WQA listing carries a fluoride claim; 5 IAPMO listings our copy records by product category only. | None cited on this page |
| PUR | No listing carries a fluoride claim (none of 300 active entries). | None cited on this page |
| AquaTru | No NSF or WQA listing carries a fluoride claim; 8 of 11 entries are IAPMO listings our copy records by product category only. | None cited on this page |
| Berkey | No listing carries a fluoride claim (none of 3 active entries). | None cited on this page |
| Refrigerator filters | No listing the index classes as a refrigerator filter carries a fluoride claim (none of 695 active entries). | None cited on this page |
| Distillers | No certification data for this type in our index | Idaho DEQ states that point-of-use distillation and reverse osmosis have proven effective for removing fluoride. |
| Activated alumina and bone char | No certification data for this type in our index | EPA lists activated alumina and reverse osmosis, applied at the treatment plant, as the best available technologies for meeting its fluoride limit. The World Health Organization notes that bone char (bone charcoal) can take up fluoride from water. |
| Whole-house systems | No listing the index classes as a whole-house system carries a fluoride claim (none of 46 active entries). | None cited on this page |
Reverse osmosis
Of the 547 active NSF/ANSI 58 listings in our copy of the NSF, WQA and IAPMO certification directories (as of 2026-10-05), 178 carry a fluoride claim (140 NSF and 38 WQA). Another 54 are IAPMO listings, which our copy records by product category only.
An NSF/ANSI 58 (reverse osmosis) listing can carry the claim "Fluoride Reduction": EcoWater Systems' ERO-175 listing carries it. To be certified for fluoride reduction under NSF/ANSI 58, a reverse osmosis system must lower a fluoride test challenge to no more than 1.5 mg/L. That is the standard's pass mark, not a removal percentage for any one system.
Idaho DEQ states that point-of-use distillation and reverse osmosis have proven effective for removing fluoride. EPA lists activated alumina and reverse osmosis, applied at the treatment plant, as the best available technologies for meeting its fluoride limit.
Brita
Idaho DEQ states that typical charcoal-based filters, such as pitcher filters, do not remove fluoride. That statement covers charcoal-based filters in general.
One of the 46 active certification entries on Brita's 18 records in our copy of the NSF, WQA and IAPMO certification directories (as of 2026-10-05) carries a fluoride claim: the Brita Total360 BRDROS, listed by Water Channel Partners under NSF/ANSI 58 with the claim "Fluoride". So the Brita-branded product with a fluoride claim is listed under the reverse osmosis standard, not as a pitcher filter.
ZeroWater
None of the 14 active certification entries on ZeroWater's 8 records in our copy of the NSF, WQA and IAPMO certification directories (as of 2026-10-05) carries a fluoride claim there. 5 of them are IAPMO listings, which our copy records only by product category: "Drinking Water Treatment Unit - Aesthetic Effects", "Drinking Water Treatment Units - Emerging Compounds/Incidental Contaminants" and "Water Treatment Product - Health Effects". For those, our copy neither confirms nor rules out a fluoride claim.
PUR
None of the 300 active certification entries on PUR's 112 records in our copy of the NSF, WQA and IAPMO certification directories (as of 2026-10-05) carries a fluoride claim. They are NSF/ANSI 42, NSF/ANSI 53 and NSF/ANSI 401 listings.
AquaTru
None of the 11 active certification entries on AquaTru's 11 records in our copy of the NSF, WQA and IAPMO certification directories (as of 2026-10-05) carries a fluoride claim there. 8 of them are IAPMO listings, which our copy records only by product category; the 2 under NSF/ANSI 58 read "Water Conditioners (Reverse Osmosis)". For those, our copy neither confirms nor rules out a fluoride claim.
Our index does not read the per-model detail on IAPMO certificates, so whether an AquaTru model carries a fluoride claim there is not answered here.
Berkey
None of the 3 active certification entries on Berkey's 3 records in our copy of the NSF, WQA and IAPMO certification directories (as of 2026-10-05) carries a fluoride claim. They are NSF/ANSI 42 listings.
Refrigerator filters
None of the 695 active certification entries on the 507 records our index classes as refrigerator filters carries a fluoride claim (our copy of the NSF, WQA and IAPMO certification directories, as of 2026-10-05). They are NSF/ANSI 42, NSF/ANSI 53 and NSF/ANSI 401 listings.
Idaho DEQ states that typical charcoal-based filters, such as pitcher filters, do not remove fluoride. That statement covers charcoal-based filters in general.
Distillers
Idaho DEQ states that point-of-use distillation and reverse osmosis have proven effective for removing fluoride.
Our copy of the certification directories has no distiller group, so this page makes no certification statement about distillers.
Activated alumina and bone char
EPA lists activated alumina and reverse osmosis, applied at the treatment plant, as the best available technologies for meeting its fluoride limit.
The World Health Organization notes that bone char (bone charcoal) can take up fluoride from water.
Our copy of the certification directories has no activated alumina or bone char group, so this page makes no certification statement about either.
Whole-house systems
None of the 46 active certification entries on the 27 records our index classes as whole-house systems carries a fluoride claim (our copy of the NSF, WQA and IAPMO certification directories, as of 2026-10-05). They are NSF/ANSI 42, NSF/ANSI 44 and NSF/ANSI 55 listings.
Certified vs claimed: what a listing records
A manufacturer's claim that a filter removes fluoride is the manufacturer's statement. WQA, which runs the Gold Seal testing and certification program, says a certified product has undergone evaluation and testing to verify that it will perform as its certified claims indicate. An NSF/ANSI 58 (reverse osmosis) listing can carry the claim "Fluoride Reduction": EcoWater Systems' ERO-175 listing carries it.
On NSF's NSF/ANSI 58 listing for EcoWater Systems, each certified model has its own row with its own claims. Our copy of IAPMO's directory records a product category for each listing instead.
More on fluoride
Sources
- TapWaterData analysis of the NSF, WQA and IAPMO certification listings. apps/website/src/lib/fluoride/cert-rows.json (Verified )
- Idaho Department of Environmental Quality. “Contaminants in Drinking Water”. https://www.deq.idaho.gov/water-quality/drinking-water/contaminants-in-drinking-water/ (Verified )
- U.S. Department of Health and Human Services Federal Panel on Community Water Fluoridation (Public Health Reports 2015;130(4):318–331). “U.S. Public Health Service Recommendation for Fluoride Concentration in Drinking Water for the Prevention of Dental Caries”. https://pmc.ncbi.nlm.nih.gov/articles/PMC4547570/ (Verified )
- World Health Organization. “Guidelines for drinking-water quality: fourth edition incorporating the first and second addenda (2022)”. https://iris.who.int/handle/10665/352532 (Verified )
- National Toxicology Program (NIEHS). “Fluoride Exposure: Neurodevelopment and Cognition”. https://ntp.niehs.nih.gov/whatwestudy/assessments/noncancer/completed/fluoride (Verified )
- U.S. Environmental Protection Agency. “Secondary Drinking Water Standards: Guidance for Nuisance Chemicals”. https://www.epa.gov/sdwa/secondary-drinking-water-standards-guidance-nuisance-chemicals (Verified )
- U.S. Environmental Protection Agency. “National Primary Drinking Water Regulations”. https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations (Verified )
- U.S. EPA, 40 CFR 142.61 (via LII). “40 CFR § 142.61 Variances from the maximum contaminant level for fluoride”. https://www.law.cornell.edu/cfr/text/40/142.61 (Verified )
- World Health Organization. “Fluoride in Drinking-water (Fawell et al., 2006), §5.2 Bone charcoal”. https://iris.who.int/handle/10665/43514 (Verified )
- NSF International. “NSF/ANSI 58 Listings: EcoWater Systems LLC”. https://info.nsf.org/Certified/DWTU/Listings.asp?Standard=058&CompanyName=EcoWater+Systems+LLC (Verified )
- Health Canada. “Guidelines for Canadian Drinking Water Quality: Guideline Technical Document – Fluoride (page 3)”. https://www.canada.ca/en/health-canada/services/publications/healthy-living/guidelines-canadian-drinking-water-quality-guideline-technical-document-fluoride/page-3-guidelines-canadian-drinking-water-quality-guideline-technical-document-fluoride.html (Verified )
- Water Quality Association. “Product Certification”. https://wqa.org/product-certification/ (Verified )
Last reviewed by TapWaterData Editorial. How we verify
Cite this page
"Do Water Filters Remove Fluoride? By Filter Type and Brand". TapWaterData, last reviewed 2026-10-11. https://www.tapwaterdata.com/fluoride/do-filters-remove-fluoride