BOROUX Proactive™ Fluoride Filter
The BOROUX Proactive Fluoride Filter is an advanced, alumina-free solution designed to reduce up to 99% of fluoride from your drinking water. Featuring a patent-pending upflow design and dual-layer nano-carbon filtration. Crafted with a durable 304 stainless steel shell, this filter is compatible with both BOROUX Foundation Filters and Black Berkey® elements, making it a versatile addition to your existing system . Each pair of filters offers a capacity of up to 1,000 gallons.
Note: As this is a newly released product, it is not eligible for any prior or current discount offers
Key Features
- 99.9% fluoride reduction Learn More
- 1,000 gallon capacity
- Dual-Layer filtration
- Patent-Pending design
- 304 stainless steel shell
- Independently Tested & Verified
Compatibility
The BOROUX Proactive Fluoride Filter is an add-on filter located in the lower chamber and must be attached to a filter housed in the upper chamber. They are compatible with the BOROUX Foundation Filter and Black Berkey® Replacement Elements.
Whether it's replacing your existing Berkey® PF-2® Fluoride Elements or initiating a new journey, the filters have been crafted for safe fluoride reduction.
Product information
We offer free shipping on all orders over $60 to the U.S.
Boroux encourages customers to test products once they are received. For this reason, we accept returns of products in new or used condition. If you are not satisfied with the purchase for any reason, within 60 days of receiving the package, please get in touch with Customer Service.

99.9% Fluoride Reduction
Industry-leading removal rate using innovative aluminum-free technology
Learn More

Up to 1,000 Gallons ¹
Long-lasting performance for 6-12 months of clean water
Our rigorous testing demonstrates exceptional fluoride removal capabilities throughout the filter's lifespan. The chart below shows real-world performance data from independent laboratory testing.
Key Performance Metrics
- Over 99% fluoride reduction in the first 280 gallons
- Maintains 78.9% average reduction up to 1000 gallons
- Minimum 47.4% reduction at 1000 gallons


Experience superior water filtration with our innovative two-stage system. The BOROUX Proactive Fluoride Filter works in perfect harmony with the BOROUX Foundation Filter to deliver exceptionally clean water.
STAGE 1
Foundation Filter: Initial Filtration

Water first passes through the activated-carbon BOROUX Foundation filter, which:
- Reduces chlorine, sediment, and other contaminants
- Improves taste and odor
- Prepares water for fluoride removal
STAGE 2
Proactive Filter: Advanced Fluoride Removal

The pre-filtered water then flows through our patent-pending dual-layer system:
- Layer 1: Advanced granulated carbon for initial polishing
- Layer 2: Hybrid nano-carbon media for final fluoride capture
- Upflow design maximizes contact time and efficiency
UPFLOW DESIGN
How It Works:

- Water flows through dual-layer media, enhancing contact with filtration materials
- Filtered water exits from the top, using the full surface area of the filter
- Upflow design increases efficiency and extends filter life by up to 20%
The BOROUX Proactive Fluoride Filter is designed to work with:
- BOROUX foundation™ filter
- Black Berkey® Replacement Elements

Prime the Filter
Use the included priming tools to prime the Proactive Filter.

Attach to Foundation Filter
Thread the Proactive Filter onto the stem of your BOROUX Foundation Filter.

Fill & Enjoy
Fill the upper chamber with water and enjoy your filtered water.
Health Implications of Fluoride Exposure
According to the Fluoride Action Network, ~95% of the reporting domestic water suppliers in the US have fluoride levels of 0.7 parts per million or less.
Understanding Fluoride's Impact on Health
-
Dental and Skeletal Fluorosis
Long-term exposure can lead to dental discoloration and skeletal problems. -
Neurological Effects
Research suggests potential impacts on cognitive development and function. -
Endocrine Disruption
Potential interference with thyroid and other endocrine system functions.
Protecting Vulnerable Populations
Certain groups are particularly sensitive to fluoride exposure:
- Infants and young children
- Pregnant women
- Elderly individuals
- People with kidney conditions
- Those with compromised immune systems
Our filtration system is specifically designed to provide comprehensive protection for these vulnerable groups.

Specifications
Filter Capacity | Up to 1,000 gallons per pair, depending on the quality of the influent water. ¹ |
Dimensions | 2.67” x 2.67” x 7” |
Composition | Filters are comprised of a specialized blend of activated carbon specifically formulated to address fluoride. |
Compatibility |
The BOROUX Proactive Fluoride Filter is designed to be used with the BOROUX foundation™ filter as well as the Black Berkey® Replacement Elements. |
Warranty Coverage |
The filter media is covered by a 6-month limited warranty, which includes defects in materials or performance under normal use conditions. The stainless steel shell is backed by a lifetime warranty against defects in material and workmanship. |
Maintenance | We recommend cleaning the shells of the fluoride filter monthly. Since the water running through the fluoride filter is pre-filtered, there is no need to clean the filters. Reprime the filters if you experience a reduced flow. |
Replacement Filter | BOROUX Proactive™ fluoride filter / Model BX·F·2 |
Box Includes |
|
¹ - Based on independent testing for the reduction of fluoride at 1,000 gallons per set of filters. While testing was performed under standard laboratory conditions, actual performance may vary. Filter performance may vary based on local water conditions.
This product is not yet available for California and Iowa residents.
Frequently Asked Questions
How does the BOROUX Proactive Fluoride Filter work?
The BOROUX Proactive Fluoride Filter attaches to the stem of the BOROUX Foundation Filter and is suspended in the lower chamber.
The water passes through the BOROUX Foundation filter. Then water first comes in contact with the granulated carbon in the inner layer of the fluoride filters.
Then, the water filters through the nano-carbon outer layer. The upflow design of the stainless steel shell, makes the water stay in contact with the outer layer for a prolonged period of time, providing superior filtration.
The filtered water exits the top of stainless steel shell through the outlet holes and into the lower chamber.
How long do the BOROUX Proactive Fluoride Filters last?
A pair of BOROUX Proactive Fluoride Filters should be replaced every 1,000 gallons, which is approximately 6-12 months of use.
What are the BOROUX Proactive Fluoride Filters made of?
- Activated granulated carbon
- Proprietary nano-carbon
- Surgical-grade stainless steel
Where are the BOROUX Proactive Fluoride Filters made?
Proudly crafted in the USA with globally sourced materials.
How did BOROUX test the fluoride filter?
- The new BOROUX fluoride filter has been tested to 500 gallons per filter or 1000 gallons per pair of filters.
- The influent test water had a concentration of 0.7 ppm (parts per million) of fluoride.
Why does the water taste a bit different with the Fluoride Filters?
When first using our new fluoride filters, you might notice a slight earthy or mineral taste. This is completely normal and temporary. Here's why:
- Our fluoride-reducing filters use highly effective filtration media that may impart a mild taste at first.
- As the filters begin working, there's a brief "break-in" period where natural elements from the media may slightly affect the taste.
- After flushing a few gallons through the system, the taste typically neutralizes and your water will return to its clean, crisp flavor.
Tip: For best results, we recommend running 3–5 gallons of water through your system before regular use. This helps rinse the filters and minimize any initial flavor changes.

Revolutionary New Fluoride Filter
Protect your family's health with the BOROUX Proactive Fluoride Filter. Engineered as an advanced enhancement to the BOROUX Foundation Filter, this patent-pending filtration system removes up to 99.9% of fluoride....