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Big Berkey 2.25 Gal Gravity Water Filter System with BB9-2 Filters

  • Based on 4,372 reviews
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Set name: Standard System (2 Black Filters)


Features

  • GRAVITY-FED FILTRATION FOR EVERYDAY HOUSEHOLD USE:- The Big Berkey Gravity-Fed Water Filter System features a 2.25-gallon capacity designed for everyday drinking water needs. Ideal for homes, apartments, offices, and RVs, it provides filtered water for drinking, coffee, tea, cooking, and filling reusable water bottles. No electricity, plumbing, tools or water pressure are required. Designed for approximately 14 people.
  • INCLUDES 2 AUTHENTIC BLACK BERKEY FILTER ELEMENTS: Includes two authentic Black Berkey filter elements (BB9-2), the Gold Standard in gravity-fed water filtration. The elements are designed to reduce a broad range of commonly found contaminants that may be present in treated drinking water sources and may affect drinking water quality, taste, and odor.
  • DURABLE STAINLESS STEEL COUNTERTOP DESIGN:- Constructed from polished AISI 304 stainless steel, the Big Berkey System is built for long-lasting everyday use. Its countertop design measures approximately 8.5 inches in diameter and 19.25 inches tall when assembled. The upper chamber nests inside the lower chamber for more compact storage when disassembled.
  • SIMPLE SETUP WITH NO ELECTRICITY OR PLUMBING:- Simply prime the Black Berkey filter elements, install them in the upper chamber, and fill with tap water. Gravity moves water through the filter elements into the lower chamber for everyday filtered water. No electricity, plumbing, permanent installation, or specialized tools are typically required. Includes two authentic Black Berkey filter elements, priming button, blocking plugs, washers, and assembly instructions.
  • ECONOMICAL & LONG-LASTING PERFORMANCE:- The Big Berkey Gravity-Fed Water Filter System provides economical everyday drinking water filtration for just pennies per gallon. Each pair of authentic Black Berkey filter elements provides up to 6,000 gallons of filtered water before replacement is recommended. Additional pairs of Black Berkey filter elements (sold separately) each add up to 6,000 gallons of filtration capacity. Actual filter life may vary depending on influent water quality, usage, and maintenance

Description

The 2.25-gallon Big Berkey System can be used on a countertop in your kitchen or office to transform bad-tasting tap water into delicious drinking water that's also ideal for making your favorite beverages or cooking. Black Berkey Elements (the original BB9-2) are composed of a unique, proprietary blend of multiple media types backed by testing from accredited, third-party labs. Black Berkey Elements remove or dramatically reduce over 200+ typical contaminants that could be present in freshwater sources. Authentic Black Berkey Elements are capable of greater contaminant reduction and a longer lifespan than virtually any of the other filter elements on the market. Berkey systems are simple and easy to use and require no electricity, costly installation, or tools, providing economical, long-lasting water filtration for just pennies a gallon. Berkey systems are simple and easy to use and require no electricity, costly installation, or tools, providing economical, long-lasting water filtration for just pennies a gallon. Berkey systems have been used for over two decades in homes every day around the world by discerning consumers who trust the quality of authentic Berkey systems to meet their drinking water needs. Berkey gravity-fed water systems are available in 7 sizes. Optional accessories also available (sold separately or included with some system bundles) include our Berkey Sight Glass Spigot, Berkey Stainless Steel Spigot, Stainless Steel Berkey Water View Spigot, Berkey Base Stainless Steel Stand and Berkey PF-2 Fluoride and Arsenic Reduction Elements. Berkey systems can be used at home or on the go. No electricity, costly installation, or tools required. Berkey water filtration systems equipped with Black Berkey Elements have been tested by third-party labs to remove or reduce over 200+ commonly found contaminants from drinking water sources. Don’t settle for lookalike systems, accessories or filters that say "the same as Berkey", "compatible with" or "replacement for" or "fits" Berkey products. Always go with the brand you can trust—original, authentic Berkey filters and systems that exceed the reduction capabilities of cheap knock-off and lookalike brands.

Specs & Other Info

SpecificationDetails
BrandBerkey
Key FeatureChlorine Filtration
Dimensions8.5"L x 8.5"W x 19.25"H
Package TypeBottle
InstallationCountertop
Power RequirementGravity Operation
Weight7.35 lbs
ModelBER-BU2 / BK4X2-BB
Flow Rate0.03 GPM
Max Temperature1°C
ManufacturerBerkey
Part NumberBER-BU2
DiscontinuedNo
Capacity2.25 Gallons
ColorClear
FinishStainless Steel
Material Thickness11 cm
Included in Package1 Unit
Number of Components1
Batteries NeededNo
Warranty6 months, Black Berkey elements: 2 years prorated
AvailabilitySince July 11, 2008
Shipping RestrictionsNot ship to California/Iowa

Frequently asked questions

The two Black Berkey Elements (BB9-2 Filters) in your Big Berkey can filter approximately 6,000 gallons of water before needing replacement. For an average family of four, this typically means replacing the filters every 2 to 3 years, depending on your water consumption and the quality of water being filtered.

Yes, the Big Berkey system can remove fluoride from your water, but you will need to purchase an additional set of PF-2 fluoride filters. These filters attach to the bottom of the Black Berkey Elements and together they efficiently remove fluoride and arsenic from your water.

Absolutely, the Big Berkey is highly effective at filtering well water, removing bacteria, viruses, and other contaminants common in well water sources. It's important to test your well water periodically to know which contaminants are present, as this can affect the lifespan of your filters.

The Big Berkey operates using a gravity-fed system. Water is poured into the upper chamber, where it gradually filters down through the Black Berkey Elements into the lower chamber, ready for use. This design eliminates the need for electricity, making the Big Berkey ideal for use in any situation, including emergencies or off-grid living.

Top Amazon Reviews

🚀 Abunda's Overview

This is our summary and key points to consider based on customer reviews.


The Berkey water filter comes highly recommended by users for its superior ability to improve water taste and filter out impurities and contaminants, including chemicals and bacteria. Praised for the quality of materials and ease of setup, despite some initial challenges with priming, the filter boasts a long lifespan which is seen as cost-effective over time. The standout feature for many is the significant improvement in water taste, likening it to high-quality bottled water and encouraging increased water consumption among users.

Pros

  • 🚰 Superior water taste, compared to both tap and other filters
  • ✅ Filters out a wide range of contaminants, including chemicals and bacteria
  • 🛠 Easy setup and use, enhancing the user experience
  • 💸 Long filter lifespan, offering good long-term value
  • 🥇 High-quality materials, ensuring durability and reliability
  • 🎉 Encourages increased water consumption due to improved taste

Cons

  • 💵 Initial cost and filter replacement can be pricey
  • 🔧 Priming the filter can be challenging
  • 📏 Size may be too large for some kitchen spaces
  • 👎 Potential for leaks if overfilled

Should I Buy It?

Yes, if you're looking for a high-quality water filter that greatly improves the taste of your water and effectively filters out a wide range of impurities, the Berkey water filter is a worthwhile investment. Despite its higher upfront cost, its longevity and performance offer great value over time.


  • Great Water Filter Would Buy Again
Set name: Standard System + Fluoride Filters
This Big Berkey water filter works well. I used AI to find the best water filters and this product was recommended as number one. Doing the math, I realized that this product is overall cheaper than bottled gallons of water from the store, and much easier on the back too. I've had no leakage whatsoever so far, and I've used for nearly three months now. The steel construction is very durable and looks nice on the counter. The water filtration is great -I taste only water now. Beautifully clear, and no chemical taste whatsoever. I would purchase again. The one who does not love has not become acquainted with God [does not and never did know Him], for God is love. [He is the originator of love, and it is an enduring attribute of His nature.] 1 John 4:8 AMP For God so loved the world that he gave his one and only Son, that whoever believes in him shall not perish but have eternal life. John 3:16 NIV for all have sinned and fall short of the glory of God Romans 3:23 NIV And I give them eternal life, and they will never, ever [by any means] perish; and no one will ever snatch them out of My hand. John 10:28 AMP Anyone whose name was not found written in the book of life was thrown into the lake of fire. Revelation 20:15 NIV Then these [unbelieving people] will go away into eternal (unending) punishment, but those who are righteous and in right standing with God [will go, by His remarkable grace] into eternal (unending) life.” Matthew 25:46 AMP ... show more
Reviewed in the United States on June 15, 2026 by Austin David Lilly

  • Works Great
Set name: Standard System (2 Black Filters)
I bought this for a grid down backup, as it is rated to filter surface water not only tap water. It took about one hour to assemble the unit and prime the filters. My tap has a spray nozzle, which means I had to use the alternate primer fitting, but the red dye test came out clean on the first attempt, so the filters were fully primed. I used 1-3/4 gallons of water to fill the tank, leaving a little air space above the filters. It took 2-1/4 hours to filter the entire tank. There was one quart remaining in the upper tank when it finished. The water tastes great and I'm quite happy with the unit. ... show more
Reviewed in the United States on September 5, 2026 by Ginger

  • Awesome purchase for Berkey water filter system
Set name: Standard System (2 Black Filters)
I love my birthday water filter. Use all of my pets water out of this. I have to refill it every few days. Filters last forever. I would totally purchase one of these again. I highly recommend. I've had it for about a year and a half and have never had any type of leaking issues and it still has the plastic water dispenser spout. ... show more
Reviewed in the United States on September 9, 2026 by Kindle Customer

  • Great product !!
Set name: Standard System (2 Black Filters)
Fantastic water system. Best tasting water ever. Easy to assemble. Need to put in some effort to prime black elements. Also bought arsenic/fluoride reduction filters. Worth it.
Reviewed in the United States on August 14, 2026 by Sravan Kumar

  • Peace of mind knowing my water is filtered pure and taste great
Set name: Standard System + Fluoride Filters
Love my Berkey water filter system. It gives me peace of mind knowing my water is filtered pure and taste great. I use it every day filtering my tap water. Love the 2.25 gal size and the design is beautiful on my counter.
Reviewed in the United States on July 16, 2026 by Amazon Customer

  • Great investment
Set name: Standard System (2 Black Filters)
My husband and I decided to purchase a water filter after the East Palestine, Ohio train derailment. We didn't want to go with the typical, mainstream brita water filter or the one that connects to a faucet. We have had those before and the filter has to be changed frequently. We liked that the Berkey filters out forever chemicals, specifically the chemicals spilled during the derailment. It also filters out over 200 contaminants, chemicals and bacteria. Setup was fairly easy, however priming the elements was challenging due to the adapter that fit onto our faucet which was a struggle. The life span of the filters is amazing, as they only need to be changed every 11,000 gallons. Although the filters are pricey, around $170ish for 2, they are worth it in the long run. Using the filter is easy. Once set up, just pour water in the top, put the lid back on and you're good to go. Quality of the materials is unmatched. We purchased a stand off Amazon that elevates the element, which you definitely need. Hoping to get the stainless steel spigot soon to replace the plastic one that came with the product. Lastly, I have to say the water tastes AMAZING. Like water should taste. It rivals the taste of Fiji, our preferred bottled water. Our family initially made fun of us for spending so much money on a water filter, but once they tasted it they plan on purchasing one. I was never a big water drinker before, but now I find myself drinking lots of it. We fill up multiple containers of it whenever we leave the house. Great product, give it a try! ... show more
Reviewed in the United States on May 11, 2023 by Sarah Albondante

  • Beware of Used/Reconditioned Berkeys! :(
Set name: Standard System (2 Black Filters)
I ordered a Big Berkey through Amazon in September 2017. The description said "Sold by: Amazon.com Services, Inc $208.11 Condition: Used - Very Good - Item has no cosmetic scratches or blemishes. Item has no cracks or dents. Item will come repackaged." The Berkey arrived with a small dent in the body, which I decided I could live with. Then when I put it together, I discovered that the black plastic wingnuts were both stripped. Buying new ones online was pretty expensive ($30 for a replacement parts kit), and I read a link that said you could secure the wingnuts with plumber's tape. So I did that, and it seemed to work. In retrospect, I should have AT LEAST complained to Amazon when I discovered the dent and the stripped wingnuts... but I thought they'd make me send the whole thing back, which would be difficult as I don't have a car. The other thing I should ABSOLUTELY have done, which I didn't, was the red food color test. The Berkey black filters are able to filter out red dye 40 and 3 (but not other colors, and not natural dyes); when a unit is assembled and red food color is added to the top chamber water, it's a way of telling whether the system is filtering properly. I didn't have enough red food color available (at that time, it said it needed a tablespoon/gallon!), so I just sort of assumed (again, stupidly) that it was working, and went ahead and used it. It seemed to work. How was I to know? Then this past week, I finally got around to doing the red food coloring test, following a cleaning and repriming. .. and BOTH filters failed. The water came through red, even after I got new wing nuts, and had my husband tighten them (they're supposed to be finger-tight, not pliers-tight, which is probably how the ones that came with it got stripped, by whoever had it before me). I also noticed that both filters had some scratches and minor chipping at the top, which was certainly nothing I'd done. Lesson: IF you are so foolish as to buy a used Berkey from Amazon.com Services, inc (or anybody else, for that matter), make sure to run the red food color test RIGHT AWAY, and hope they will honor your 30-day warranty. I now have no recourse but to go to Berkey and buy new filters for $120, and hope they work. At least if I buy them from Berkey, they come with a warranty! But I"m just sick to think that for the past year and a half, I've been carefully NOT filtering our tap water... and running it past plumber's tape, as well! :( ... show more
Reviewed in the United States on March 23, 2019 by Holly Masri

  • Best choice!
Set name: Standard System (2 Black Filters)
Bought Feb 22, 2025: still leaks from the spicket. So it has to stay on my little sink area. That’s really not good since the area is so small and I bought it to go else where. It’s very good besides that. Easy to clean and pour and it makes getting water easily accessible for my child. The stainless steel means it’s long lasting. Love the look. The filter is lasting a long time and I leave by the ocean. So cleaning the filers hasn’t need to be done since I bought it. It’s September now. The package came with a blue facet piece to clean the filters and it’s better than the brown rings before. No other complaints other than the spiked leaking. Strange cause I bought a new one after moving and the first one doesn’t leak at all ... show more
Reviewed in the United States on October 1, 2025 by Mommy

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