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Berkey BK4X2-BB Big Berkey Drinking Water Filtration System with 4 Filters - 2 Black Filters and 2 Fluoride Filters

by Berkey
4.4 out of 5 stars 352 customer reviews
| 121 answered questions

List Price: $340.00
Price: $288.50 & FREE Shipping. Details
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Sold by COLORADO DISTRIBUTORS and Fulfilled by Amazon. Gift-wrap available.
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  • Purifies up to 3.5 gallons per hour
  • Filter Life: Up to 3,000 gallons per filter element
  • Holding Capacity: 2.25 Gallons
  • Cleanable, Self-Sterilizing Filters
  • High Grade 304 Stainless Steel
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31 new from $279.51 1 used from $230.80
$288.50 & FREE Shipping. Details In Stock. Sold by COLORADO DISTRIBUTORS and Fulfilled by Amazon. Gift-wrap available.

Frequently Bought Together

  • Berkey BK4X2-BB Big Berkey Drinking Water Filtration System with 4 Filters - 2 Black Filters and 2 Fluoride Filters
  • +
  • Berkey Stainless Steel Wire Stand with Rubberized Non-skid Feet for Big Berkey and Other Medium Sized Gravity Fed Water Filters
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  • BIG Berkey Water View Sight Glass
Total price: $355.49
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Product Description

Product Description

The versatile Big Berkey system is the ideal system for use at home with small or medium sized families, travel, outdoor activities or during unexpected emergencies. This powerful system purifies both treated water and untreated raw water from such sources as remote lakes, streams, stagnant ponds and water supplies in foreign countries, where regulations may be substandard at best. Perfect for everyday use, outdoor activities and a must in hostile environments where electricity, water pressure or treated water may not be available. The Big Berkey system removes pathogenic bacteria, cysts and parasites entirely and extracts harmful chemicals such as herbicides, pesticides, VOCs, organic solvents, radon 222 and trihalomethanes. It also reduces nitrates, nitrites and unhealthy minerals such as lead and mercury. The Berkey water filter system is so powerful it can remove food coloring from water without removing the beneficial minerals your body needs. Virtually no other system can duplicate this performance. Constructed of highly polished 304 stainless steel, the system comes complete with four purification elements and utilizes the latest technological advances. The Big Berkey has a storage capacity of about 2.25 gallons (8.5 liters) and when in use it stands 19.25" in height with a diameter of 8.5". The upper chamber nests within the lower chamber for transport and stands only 13" in height.

From the Manufacturer

The versatile Big Berkey system is the ideal system for use at home with small or medium sized families, travel, outdoor activities or during unexpected emergencies. This powerful system purifies both treated water and untreated raw water from such sources as remote lakes, streams, stagnant ponds and water supplies in foreign countries, where regulations may be substandard at best. Perfect for everyday use, outdoor activities and a must in hostile environments where electricity, water pressure or treated water may not be available. The Big Berkey system removes pathogenic bacteria, cysts and parasites entirely and extracts harmful chemicals such as herbicides, pesticides, VOCs, organic solvents, radon 222 and trihalomethanes. It also reduces nitrates, nitrites and unhealthy minerals such as lead and mercury. This system is so powerful it can remove food coloring from water without removing the beneficial minerals your body needs. Virtually no other system can duplicate this performance. Constructed of highly polished 304 stainless steel, the system comes complete with four purification elements and utilizes the latest technological advances. This system has a storage capacity of about 2.25 gallons (8.5 liters) and when in use it stands 19.25" in height with a diameter of 8.5". The upper chamber nests within the lower chamber for transport and stands only 13" in height. Configured with four Black Berkey purification elements the system will purify up to 7 Gallons (13.3 liters) per hour.

Product Information

Technical Details

Part Number BK4x2
Item Weight 9 pounds
Product Dimensions 8.5 x 8.5 x 19.2 inches
Origin USA
Item model number BK4x2-BB-PF-2
Finish Stainless Steel
Material Stainless Steel
Item Package Quantity 1
Flow Rate 2 GPH
Batteries Included? No
Batteries Required? No

Additional Information

ASIN B00BWIX1EQ
Customer Reviews
4.4 out of 5 stars 352 customer reviews

4.4 out of 5 stars
Best Sellers Rank #2,017 in Home Improvements (See top 100)
Shipping Weight 9 pounds (View shipping rates and policies)
Domestic Shipping This item is also available for shipping to select countries outside the U.S.
International Shipping This item can be shipped to select countries outside of the U.S. Learn More
Date First Available November 3, 2009

Warranty & Support

Product Warranty: For warranty information about this product, please click here

Customer Reviews

Top Customer Reviews

Verified Purchase
We've read lots of reviews but couldn't find a definitive review, so we decided to test our unfiltered tap water (in Southern California) and with our new Big Berkey Filtered water and here are the results:

Our unfiltered tap water was generally acceptable by the lab with the following notable exceptions:

1. Arsenic: 2.5 parts per billion (ppb) - lab considered this reason for "caution"
2. Uranium 238: 3.1 ppb - also "caution"
3. Aluminum: 94 ppb - caution
4. Fluoride: 0.8 parts per million (ppm) - EPA has not established levels for this category

Here are our results with the Big Berkey (using 2 black filters and 2 fluoride/arsenic filters):

1. Arsenic: less than 1 ppb - lab considers "acceptable"
2. Uranium 238: less than 1 ppb - acceptable
3. Aluminum: 19 ppb - acceptable
4. Fluoride: 0.4 ppm (I wonder if we used 4 fluoride filters instead of 2 if the fluoride would be removed completely)

Items of note, the lab that tested the water is a professional lab (not a home kit) and there are three levels of interpretation: acceptable (safe), caution (consider filtering) and unacceptable (contact municipality and consider alternative sources). The lab uses ICP-MS method to test the water.

Hope this helps. Disclaimer: I have no relationship to the company....I just wanted to know whether or not the filters work!
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Big Berkey must be used everyday or bacteria will grow in dry filters, If you go on vacation have some one baby sit your Berkey, take it with you, dry out filters for 3.5 weeks turning everyday or just buy new filters for $107. Berkey needs to inform customers about this. I had to call Berkey to find out this information.
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Verified Purchase
As far as water filtration goes, the Big Berkey coupled with its flouride filtration design is a lead competitor. It turned my foul tasting tap water into my favorite beverage. Not only that, there is research which suggests this filter surpasses its filtration claims. You don't have to worry about pesticides, heavy metals, viruses, or bacteria. But, there are several design flaws.

Cons: If you're putting this together for the first time remember to prime your flouride filters. I recommend you repeat the priming process 3 or 4 times! Don't use what they suggest (30-60 second intervals). To remove the bitter taste I had to disassemble my unit and prime each filter 4 times for 90 seconds on each end. That, in theory, is a total of 8 priming attempts! As you switch from end to end you will see a glimpse of milky water. Repeat until you do not and don't skimp on the duration. I still taste an extremely minor bitter hue to the water, but again it's not noticeable. If you want to save yourself some time and frustration, bite the bullet and prime these filters BEFORE HAND. The Black Berkey filters, however, prime wonderfully according to the instructions.

NOW ONTO THE SPIGOT. I came home to a soaked floor three or four times. The beveled washer will not sit flush as easily as they depict. Remember to visually line up the washer so that you can see no gaps when tightening it. I also recommened you tighten it a quarter turn as they say, but tighten the nut inside the unit as much as you can. I got fed up on the last attempt. I woke up to a wet floor, grabbed gloves, and fiddled with the nut while water was still in it. This way I could MAKE SURE it didn't leak. Long story short you need to overtighten the internal nut in order for it to not leak. If you don't get lucky lining it up then you will have water everywhere.
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Verified Purchase
I purchased this item with a focus on fluoride removal. I've tried other products in the past which have claimed to reduce a significant amount of fluoride but (upon testing) did not lived up to their claims.

The Berkey System caught my attention after reading positive reviews, watching related videos on youtube and doing a bit of research. In the end I can say that I am 100% satisfied with this system.

I initially took my time setting up the system as to assure it was done properly. I read stories about people ruining their filters by improperly installing them (ie., screwing the filter on too tight). Also, prior to using the filters they must be "primed" by flushing them with water. The filters must be flushed in the correct direction and doing so takes a a little bit of skill. I flushed the PF-2 filters for 20 seconds according to the Berkey Manual Instructions, however the factory dust that discolors the water with a white foggyness did not flush out in just 20 seconds. In fact, it took me about 90 seconds to completely flush them out.

In anycase, after they were primed, I screwed everything to the canister very carefully according to the instructions. I then filled the canister up with 2 1/2 gallons of water and then discarded the first filtered batch. I filled up the canister again for a second batch and when that completed I tasted the water.... Wow! the water tasted great. I filled up a glass of Berkey Filtered water and another glass of regular tap water and compared side by side. I could not notice any difference in the look of the water. However, the difference in smell was significant. The Berkey filtered water smelled like water should; clear, crisp and odor free. The tap water (i kid you not) in comparison smelled a bit like sewage.
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