Berkey Overview
The Big Berkey is the flagship gravity water filter from New Millennium Concepts, Ltd. With its 304 stainless steel construction and proprietary Black Berkey filter elements, it has become the go-to choice for preppers, off-grid enthusiasts, and health-conscious households seeking comprehensive water filtration without electricity or plumbing.
Bottom line: The Big Berkey offers exceptional contaminant removal breadth and filter longevity, but the lack of NSF certification and premium price give some buyers pause. If you value portability, emergency preparedness, and comprehensive filtration over third-party certification, it's an excellent investment.
Black Berkey Element Performance
Berkey's proprietary filter elements combine a ceramic outer shell with a carbon composite core. Independent lab testing (not NSF) shows the following reduction rates:
| Contaminant | Tested Reduction | Category |
|---|
| E. coli | >99.9999% | Bacteria |
| Giardia lamblia | >99.99% | Protozoa |
| Cryptosporidium | >99.99% | Protozoa |
| Lead | 99.9%+ | Heavy metal |
| Mercury | 99.9%+ | Heavy metal |
| Chlorine | 99.9%+ | Chemical |
| VOCs | 99.9%+ | Chemical |
| Atrazine | 99.9% | Pesticide |
| Pharmaceuticals | 99.5%+ | Emerging |
| Iron | 99.6% | Mineral/metal |
Important: These results come from Berkey-commissioned independent lab testing, not NSF certification. Berkey has not pursued NSF/ANSI certification, which some consumers view as a red flag. However, the testing methodology and labs used are legitimate and the results are publicly available.
Berkey Model Comparison
| Model | Capacity | Max Elements | People | Price |
|---|
| Travel Berkey | 1.5 gal | 2 | 1-2 | $250-300 |
| Big Berkey | 2.25 gal | 4 | 2-4 | $350-400 |
| Royal Berkey | 3.25 gal | 4 | 4-6 | $450-500 |
| Imperial Berkey | 4.5 gal | 6 | 6-10 | $550-600 |
| Crown Berkey | 6 gal | 8 | 8-12 | $650-700 |
Cost Per Gallon Analysis
| Factor | Big Berkey (2 elements) |
|---|
| Initial purchase | $375 |
| Element cost (pair) | $150 |
| Element life | 6,000 gal per element |
| Total filtered (2 elements) | 12,000 gal |
| Filter cost per gallon | $0.0125 |
| 3-year total (incl. unit) | $375 + $150 = $525 |
| True cost per gallon | $0.044 |
At $0.044 per gallon, the Big Berkey is far cheaper than bottled water ($1-3/gal) and comparable to pitcher filters on a per-gallon basis, despite the high upfront cost.
Fluoride Removal: The PF-2 Add-On
Standard Black Berkey elements do NOT remove fluoride. For fluoride reduction, Berkey offers PF-2 elements that install after the Black Berkey elements:
- Reduction rate: Up to 95% fluoride
- Also reduces: Arsenic V and pre-oxidized Arsenic III
- Lifespan: 1,000 gallons (shorter than Black elements)
- Cost: ~$65-75 per pair
- Additional cost per gallon: ~$0.065
PF-2 elements must be used in conjunction with Black Berkey elements — they are not standalone filters. They also extend the overall height of the system by about 2 inches.
Pros and Cons
Pros:
• 200+ contaminant reduction
• 6,000-gallon filter life
• No electricity needed
• Stainless steel (304)
• Portable for emergencies
• Cost-effective long-term
• Works on well/river/lake water
• Expandable (up to 4-8 elements)
Cons:
• No NSF certification
• High upfront cost ($350+)
• Slow (1-3.5 gal/hour)
• Large counter footprint
• Requires manual filling
• Fluoride removal costs extra
• Heavy when full (19+ lbs)
• Fake/counterfeit elements online
Frequently Asked Questions
Is Berkey better than reverse osmosis?For biological contaminants and portability, yes. For dissolved solids, fluoride, and comprehensive purification, no — RO removes more at the molecular level. Many households use both: RO for daily drinking water and Berkey as emergency backup.
Why doesn't Berkey have NSF certification?Berkey states that NSF certification is expensive and would require revealing proprietary filter technology. They argue their independent lab testing is sufficient. Critics note that NSF certification provides standardized third-party validation that consumers trust.
How do I avoid counterfeit Berkey filters?Buy directly from Berkey's official website or authorized dealers. Amazon has had counterfeit issues. If the price seems too good to be true, it probably is. Genuine Black Berkey elements have specific laser markings.
Can Berkey remove viruses?Berkey claims >99.999% virus reduction (MS2 and FR coliphage) in independent testing. However, without NSF certification for virus removal (NSF P231), this claim hasn't been independently verified to the same standard as certified systems.
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