Water filter · countertop
Big Berkey Gravity System
Genuinely cheap per gallon, but 'tested to' lab claims with no NSF certification. The deception case.
Flags
- · Marketed for lead removal but not NSF/53 certified for lead.
- · Marketed for PFAS removal but not certified to P473 (or 53+401).
- · No third-party certification on the NSF/WQA/IAPMO database. 'Tested to' is not 'certified to'.
Flags indicate missing certifications or data gaps under our rubric, not a confirmed finding that a product fails to perform.
Recalls and advisories
- [EPA] Black Berkey elements have faced an EPA/FIFRA regulatory matter affecting availability; verify current status before purchase. source
Total cost of ownership
- Cost / gallon
- $0.028
- ~Annual filters
- $31/yr
Certifications
No third-party certification on an official database. Any performance claims are unverified.
Overview
The Big Berkey Gravity System is a countertop water filter. It carries no accredited NSF, WQA, or IAPMO certification - its contaminant claims are "tested to" lab results, not certifications. It is also marketed for lead, PFOA, PFOS, chlorine taste and odor, fluoride, for which we found no accredited third-party certification (so we award no certification credit; this is not a finding that it fails to reduce them). Running cost works out to about $0.028 per gallon.
By the numbers
- Certified to reduce
- nothing certified (claims are 'tested to' only)
- Marketed, no certification found
- lead, PFOA, PFOS, chlorine taste and odor, fluoride
- Format
- countertop
- Cartridge life
- 6,000 gallons
- Cost per gallon
- $0.028
- Annual filter cost (~1,100 gal)
- $31/yr
- Install
- gravity countertop, no plumbing
Strengths
- No standout strengths in our scoring.
Watch-outs
- - Verified Contaminant Reduction: 0.0/10
- - Certification Independence: 3.0/10
- - Marketed for lead removal but not NSF/53 certified for lead.
- - Marketed for PFAS removal but not certified to P473 (or 53+401).
- - No third-party certification on the NSF/WQA/IAPMO database. 'Tested to' is not 'certified to'.
Who it is for
- · Cost-conscious buyers - very low cost per gallon
Who should skip it
- · Anyone who needs verified contaminant removal - this product is not certified
- · Anyone buying specifically for lead - it is marketed for it but not certified
What to know before buying
- · Black Berkey elements are not NSF/WQA certified; the brand relies on its own commissioned third-party 'tested to' lab data rather than independent certification.
- · In late 2022 the EPA classified Black Berkey elements as pesticide devices under FIFRA due to their silver content, leading to a stop-sale dispute that has affected availability.
- · Replacement Black Berkey elements (BB9-2) are sold in pairs and rated by the manufacturer for about 6,000 gallons each; fluoride reduction requires separate add-on PF-2 filters.
How it scored
Verified Contaminant Reduction
0.0/10 · 35%Held NSF/WQA/IAPMO certifications for the contaminants that matter. A claim is not a certification.
- ·No third-party contaminant certification Aclaims only, uncertified - No NSF/WQA/IAPMO certification. Performance claims are unverified.
Total Cost of Ownership
5.0/10 · 25%Computed cost per gallon vs the format-class median. The number nobody surfaces.
- +5Cost per gallon vs class median A$0.028/gal (below class median) - Computed cost per gallon scored against the format-class median.
Certification Independence
3.0/10 · 15%Certified on the official database vs self-claimed 'tested to' marketing.
- ·Not verifiable on a certification database Ano database listing - No third-party certification listing. 'Tested to NSF standards' earns no certification credit.
- +3Per-contaminant reduction disclosed Bperformance data sheet - Publishes percent reduction per contaminant at rated capacity.
- ·Marketing exceeds certified scope Aclaims beyond certified scope - Marketing emphasizes contaminants the certifications do not cover.
Capacity & Flow Fit
5.0/10 · 15%Cartridge life and flow appropriate to the format.
- +3Cartridge life fits the format B6000 gal (norm 450) - Rated cartridge life is appropriate for this filter format.
- +2Honestly rated filter life Bgallon rating matches typical use - Months claim matches the gallon rating at typical use.
Practical Fit
7.0/10 · 10%Install, footprint, and source-water readiness.
- +5Install type disclosed Cgravity countertop, no plumbing - Install method and difficulty are disclosed up front.
- +2Predictable replacement schedule Chonest life rating - Replacement schedule is predictable from the honest gallon rating.
FAQ
- Is the Big Berkey NSF certified?
- No. Berkey is not NSF, WQA, or IAPMO certified; its contaminant claims come from manufacturer-commissioned lab testing rather than an independent certification body.
- Why has Berkey availability been disrupted?
- The EPA classified the silver-containing Black Berkey elements as pesticide devices under FIFRA in 2022, triggering a stop-sale order and litigation that has affected stock of replacement elements.
Related guides
This score is our opinion under our published rubric, not a statement of objective fact or a lab test of this product. We score what third-party certifications prove; absence of a certification means we found no verification, not that a product fails to perform. Last reviewed 2026-05-29. Scored under water-v1.0. Prices and certifications are re-verified on a cadence; see the methodology for how each rule fires.