BOROUX Foundation black filters are compatible with popular water filtration systems. We recommend replacing a pair of BOROUX Foundation Filters every 12 months. Filter lifespan will vary depending on source water quality and usage. A pair of filters is warranted and guaranteed to filter effectively for 12 months. The black carbon filter elements are equipped with Stem Saver technology for added durability during handling and cleaning.
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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.
List of compatible water systems
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To comply with state regulations, BOROUX filters are only for use to reduce chlorine, chloramine, microplastics, and nominal Particulate Class I in California and Iowa.
The contaminants listed below this warning do not pertain to our California and Iowa compliant products.
Our state-of-the-art filtration technology doesn’t just filter water; it transforms it. By removing up to 99.97% of harmful contaminants, BOROUX Foundation™ filters ensures your water is as pristine and refreshing as nature intended. Explore the specific contaminants our filters eliminate and how exposure to them can impact your health.
Every System comes with our advanced Foundation™ Filters (Set of 2) that deliver exceptional water quality and lasting performance.
Filter Capacity |
We recommend replacing a pair of BOROUX Foundation Filters every 12 months. Filter lifespan will vary depending on source water quality and usage. |
Dimensions |
2.75” x 8.5” 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. |
Warranty Coverage |
The BOROUX Foundation Filters are warranted to be free from defects in material and workmanship for one year from the date of purchase. This warranty does not cover failures resulting from abuse, misuse, alteration, damage, failure to follow installation and use instructions, or wear consistent with the expected filter lifespan. If the product is deemed defective, we will replace it. Proof of purchase, a description of the product, and an explanation of the alleged defect must be provided to process a warranty claim. |
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 Manufactured in the United States with domestic and internationally sourced materials |
Box Includes |
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¹ - 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.
The BOROUX Foundation Filters designed with versatility in mind, fitting seamlessly with a range of systems. Below is a list of popular systems the filters fit in.
SYSTEM |
MODEL |
Berkey® |
Travel Berkey® |
AlexaPure® |
AlexaPure Pro® |
Aquacera® |
Terra2 |
Doulton® |
GSS |
British Berkefeld® |
6L |
Patriot Pure |
Patriot Pure Ultimate |
ProOne® |
Big+ |
Waterdrop® |
Waterdrop® King Tank |
Don’t see your system listed? We’re here to help determine compatibility. Your feedback helps us expand our list of compatible systems. If you don't see your filtration system model, please send us an email at contact@boroux.com with the make, model, filter housing dimensions, and any other important specifications.
The BOROUX Foundation Filters are WQA certified to NSF/ANSI 42, NSF/ANSI/CAN 401, and NSF/ANSI/CAN 372. All of the certicate testing is performed by the Water Quality Assosciation (WQA).
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.
We recommend replacing a pair of BOROUX Foundation Filters every 12 months. Filter lifespan will vary depending on source water quality and usage.
A pair of filters is warrantied and guaranteed to effectively filter for 12 months.
A specialized blend of activated carbon.
See thefull list and the latest contaminanttest results.
The BOROUX Foundation Filter is not intended to filter microorganisms.
We’re excited to announce an upgrade to our Foundation Filters: transitioning from the original blue stem savers to a new, integrated black stem saver design. Unlike the previous version, was attached to the Foundation Filters with a food grade adhesive, the new stem savers are precision molded directly into the filter. This streamlined, one-piece construction enhances product durability and reduces the need for adhesives. The result is a stronger, more reliable filter that meets our highest standards for performance and quality. The filters with a pink stem saver are only available for the states of California and Iowa.
