



Product Description

foundation.
Rigorous Performance, Verified Data
Each filter created is a testament to a firm commitment to transparency. Undergoing meticulous testing procedures, the filters come with verified performance data that make sure you receive water filtration you can count on. This product was designed exclusively to enhance municipal tap water. With each drop filtered, rest assured, you’re enjoying the pinnacle of water filtration.
Reinforced Stem Saver Design
Recognizing the challenges of filter handling and maintenance, the BOROUX foundation. have been re-engineered with the innovative Stem Saver. This advancement fortifies the most vulnerable part of the filter—its stem—against breakage, ensuring it can endure the rigors of regular cleaning and handling.
Uncompromising Quality, Direct to You
The BOROUX foundation. stands out by offering premium filtration directly to your doorstep. Eliminating middlemen ensures that each filter is a blend of top-notch quality and value. This direct-to-consumer approach provides superior hydration without the premium cost.
Designed for Universal Fit
Our filter is meticulously designed to seamlessly integrate with most gravity-fed water filtration systems. Whether it’s refreshing your existing setup or initiating a new journey in water wellness, the filters have been crafted for adaptability.
BOROUX foundation. black filters


Simplicity
The lowercase styling of ‘foundation.’ in our name speaks to the inherent simplicity of BOROUX. By choosing ‘foundation’, we reflect the straightforward and essential nature of our water filtration solutions—designed to be uncomplicated and accessible.


Finality
The period at the end of “foundation.” symbolizes finality and completeness. It’s a subtle way of saying that BOROUX foundation. is the definitive answer to water filtration needs. It’s a complete solution, and there’s nothing more to add – it’s the final word in water filtration.


Grounded
Just as the name “foundation.” is grounded (with the period acting as an anchor), BOROUX is grounded in nature and its commitment to the environment. The name resonates with the brand’s dedication to being a reliable foundation for filtered water solutions.


BOROUX foundation. black filters
BOROUX foundation black filters are compatible with popular water filtration systems. They ensure years of reliable service with a lifespan of up to 6,000 gallons per filter (12,000 gallons per pair). The filters, equipped with Stem Saver technology, are reinforced for added durability during handling and cleaning.
Box Includes: -Two BOROUX foundation filters -Blue Priming Tool -Red Dye Test Solution -Tan Priming Tool -Product Insert *Based on independent testing for the reduction of chlorine at 6,000 gallons per filter. While testing was performed under standard laboratory conditions, actual performance may vary. The contaminants or other substances removed or reduced by these filters are not necessarily in all users’ water. Filter performance may vary based on local water conditions.
BOROUX foundation. black filters
Specifications
Filter Capacity: Up to 12,000 gallons per pair depending on the quality of the influent water.*
Dimensions: 2.75” x 2.75” x 9.75” Composition: Filters are comprised of a specialized blend of activated carbon. The BOROUX foundation filters contain silver, an antimicrobial agent, to prevent microorganisms from degrading the product itself. This filter is not intended to filter microorganisms. Compatibility: Fits most gravity-fed water filtration systems and fluoride filters. Coverage: BOROUX foundation filters are protected by a 1-year quality pledge. For further details on our pledge provisions, please contact customer support. Maintenance: Scrub the BOROUX foundation filters every 3-6 months. Using an abrasive scouring pad, carefully scrub the surface of the filters for several minutes. DO NOT use soap or detergents on the filters. Re-prime the filters, install, and perform the red dye test to ensure proper installation of the filters. Replacement Filter: BOROUX foundation filter / Model BX·FND9·2
Compatible Water Systems

Key Features The BOROUX foundation. is designed with versatility in mind, fitting seamlessly with a range of systems. Below is a list of popular systems the filters fit in. Rigorous Performance, Verified Data Reinforced Stem Saver Design Uncompromising Quality, Direct to You Two Decades of Trusted Legacy Compatibility
The BOROUX foundation. filter is meticulously designed to seamlessly integrate with most gravity-fed water filtration systems including Berkey, ProOne, Alexapure Pro, Doulton, Patriot Pure Ultimate, and more. Whether it’s refreshing your existing setup or initiating a new journey in water wellness, the filters have been crafted for broad compatibility with gravity-fed systems.
Don’t see your system listed? We’re here to help determine compatibility. Your feedback helps us expand our list of compatible systems.
The BOROUX foundation. is designed with versatility in mind, fitting seamlessly with a range of systems. Below is a list of popular systems the filters fit in. Berkey
Travel Berkey Big Berkey Berkey Light Royal Berkey Imperial Berkey Crown Berkey
Others
AlexaPure AlexaPure Pro
Aquacera Terra2
Doulton Pioneer SS4 LP4
Patriot Pure Patriot Pure Ultimate
ProOne Big+ Big II
Waterdrop Waterdrop King Tank
Add to Cart
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Customer Reviews
4.8 out of 5 stars 40
4.6 out of 5 stars 1,556
Price
$399.00$399.00 $408.00$408.00
Capacity
3 Gallons 3.25 Gallons
Dimensions
23″ tall x 9″ wide 23″ tall x 9.5″ wide
Included Filters
(2) BOROUX foundation filters (2) Black Berkey filters
Filter Lifespan
Up to 12,000 gallons Up to 6,000 gallons
Test Results
Verified tests following real-world usage and to maximum claimed gallonage. Outdated, extrapolated test results. Many contaminants only tested to 500ml (two cups).
Manufacturer Lifetime pledge on Stainless Steel Chambers
✓
X
Spigot
Stainless Steel Spigot with Ceramic Valve Plastic ($23 upgrade)
Optional Stand
$30 $52
60-Day Trial
✓
X
Stem Saver
✓
X
Compatible Fit: It is designed to fit perfectly in the BOROUX legacy water filter system and most gravity-fed water filter systems, including a direct replacement filter for the Berkey BF2 BB9-2 fitting the Travel Berkey, Big Berkey, Berkey Light, Royal Berkey, Imperial Berkey, and Crown Berkey.
Advanced Filtration Technology: NSF/ANSI/CAN 372 certified by WQA, the BOROUX foundation black replacement filters feature premium activated carbon to effectively filter chlorine, lead, chromium, mercury, and countless other contaminants. Ensuring pristine, great-tasting water that is perfect for you and your family to enjoy with peace of mind.
Reinforced Stem Saver Design: The BOROUX foundation has been re-engineered with the innovative Stem Saver. This advancement fortifies the filter’s most vulnerable part—its stem—against breakage, ensuring it can endure the rigors of regular cleaning and handling.
Long-Lasting Performance: Enjoy up to 12,000 gallons of filtered water per set of two filters, which provide reliable and extended filtration for all your hydration needs.
Uncompromising Quality – Direct to You: The BOROUX foundation. stands out by offering premium filtration directly to your doorstep. Eliminating middlemen ensures that each filter is a blend of top-notch quality and value. This direct-to-consumer approach provides superior hydration without the premium cost.
Customers say
Customers find the water filter fits perfectly, lasts a long time, and is affordable. They appreciate its ease of installation and water clarity, with one customer noting it filters out pretty much everything. While some customers say the water tastes good, others report that the taste is noticeably worse.




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