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BOROUX foundation.™ Filter


BOROUX foundation.™ filters are versatile compatible with popular water filtration systems. They ensure years of reliable service with a lifespan of up to 3,000 gallons per filter (6,000 gallons per pair). The filters, equipped with Stem Saver technology, are reinforced for added durability during handling and cleaning.

  • We are currently accepting pre-orders for BOROUX foundation. Expected shipping date is mid-December 2023. Currently, we are unable to ship to California or Iowa.
  • This filter is not intended to filter microorganisms.
Key Features

The BOROUX foundation.™ 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 compatibility, including almost all gravity-fed water filtration systems.

Product information


Lowercase letters are often perceived as simpler and more approachable than their uppercase counterparts. It emphasizes the straightforward nature of Boroux products. The name foundation reflects simplicity without the need for embellishment.


The period at the end of "foundation." symbolizes finality and completeness. It's a subtle way of saying that Boroux's 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.


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.

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 guarantee 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.


Filter Capacity   Up to 6,000 gallons per pair depending on the quality of the influent water.¹
View Test Results 
Dimensions 2.75” x 2.75” x 9.75”
Compatibility Fits most gravity-fed water filtration systems and fluoride filters.

Warranty Coverage  BOROUX foundation.™ filters are protected by a 1-year quality warranty. For further details on our warranty 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


What's in the box?

  • Two BOROUX foundation. filters
  • Blue Silicone Primer
  • Red Dye Test Solution
  • Tan Priming Button
  • Product Insert

¹-Based on independent testing for the reduction of chlorine at 3,000 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.

Frequently Asked Questions

How long do the filters last?

The filter lifespan will vary depending on the source water and contamination level. The recommendation for when to replace depends on several factors. For example, for filtering chlorine, the filters last for 6,000 gallons per pair. See recommendations for other contaminants.

How do the filters work?

Boroux foundation filters work by absorbing and trapping contaminant molecules. The carbon attracts and absorbs molecules with a certain chemical charge. They stick to the carbon, like how a magnet attracts metal. The tiny pores of the carbon block are so small that they physically block and trap tiny particles. It's similar to a sieve or strainer.

What is the Boroux filter made of?

A specialized blend of activated carbon.

More FAQS here

The Story

Building on the legacy of 25 years in the water filter industry, BOROUX® emerges as a beacon of our commitment to holistic health, personal empowerment, and environmental stewardship. Every drop we filter is a testament to our innovative spirit, ethical dedication, and transparent practices that set new benchmarks. With Boroux, hydration takes on a deeper meaning—it's a journey of enhanced well-being, driven by superior quality, cutting-edge technology, and respect for our planet. Our brand resonates with these values, mirroring our aspiration to uplift lives while cherishing the world we inhabit and maintaining open communication with our community.