Bone charcoal water filters are a bit of a hidden gem in the filtration world. The material starts as animal bones that are cleaned, left out in the sun and rain for at least 90 days, then dried completely.
Once those bones hit 1,472 degrees Fahrenheit, they carbonize into a 100% organic filter media. It doesn’t leave toxicity behind, and it actually preserves the beneficial minerals in your water.
What makes bone char special is its porosity — it’s roughly 100 times more porous than coconut carbon. That means it’s exceptionally good at absorbing fluoride and calcium-based contaminants.
If fluoride or heavy metals in your water supply keep you up at night, bone charcoal is one of the best filtration options you can get. Here are 10 systems we’ve tested and reviewed.
This 20-inch dual bone char carbon filter is the ultimate fluoride removal system. It provides cleaner, safer water without any electric supply and features minimal flow restrictions for whole-house use.
Quick Comparison Chart
| # | Bone Charcoal Water Filter | Our Rating | ||
|---|---|---|---|---|
| 1 |  |
AFWFilters BCBC-PENTEK | ★★★★★ | Check Price |
| 2 |  |
AFWFilters AABC-PENTEK | ★★★★★ | Check Price |
| 3 | |
AFWFilters BCRF-PENTEK | ★★★★☆ | Check Price |
| 4 |  |
Pentek GAC-20BB | ★★★★☆ | Check Price |
| 5 |  |
AFWFilters SDBC-PENTEK | ★★★★☆ | Check Price |
| 6 |  |
AFWFilters SDBCCB | ★★★★☆ | Check Price |
| 7 |  |
AFWFilters 3 Stage Kit | ★★★★☆ | Check Price |
| 8 |  |
AFWFilters CF1-4520-BC | ★★★★☆ | Check Price |
| 9 |  |
Hydronix 3 Stage Kit | ★★★★☆ | Check Price |
| 10 |  |
AFWFilters 3 Stage 20" | ★★★★☆ | Check Price |
1. AFWFilters BCBC-PENTEK — Best Overall
AFWFilters CF2-4520-BCBC-PENTEK Whole House Filter
This 20-inch dual bone char carbon filter provides the ultimate fluoride removal system with two PENTEK canister systems. It delivers cleaner, safer water without any electric supply.
Pros
- Double bone char carbon for maximum fluoride removal
- Easy installation with detailed guide included
- Standard flow rate designed for 2-4 bathroom homes
- Reduces water spray while changing filters
Cons
- Weighs 38.4 pounds making it heavy to handle
- Requires periodic cartridge replacement
- Large footprint for installation
This is a 20-inch 2-stage upgraded PENTEK big blue filter that has a dual bone char carbon filter. It’s the ultimate fluoride removal system and is preferred by a large number of customers who want the most thorough filtration available.
The double system of bone char filter efficiently improves water quality and reduces harmful substances in your supply. These two PENTEK canister systems will provide you with safer and cleaner water without any electric supply required.
The 20-inch high flow big blue bone char filter provides a larger surface area and fewer flow restrictions compared with 10-inch big blue systems. This allows for higher flow rates throughout your home plumbing.
Its large NPT connection minimizes flow restriction even further. The installation guide is straightforward and allows homeowners to set it up by themselves with basic plumbing knowledge.
If you’ve any doubts about installation, any plumber can install this product within 1 to 2 hours. The bone char cartridge reduces contaminants including heavy metals like fluoride, iron, lead, mercury, aluminum, manganese, and more.
The bone char filter also improves the taste of your water and removes foul odor, chlorine, herbicides, and other chemicals. However, this product is quite heavy at 38.4 pounds, so plan accordingly when handling it during installation.
2. AFWFilters AABC-PENTEK — Best Dual System
AFWFilters CF2-4520-AABC-PENTEK Whole House Filter
This 20-inch PENTEK big blue features two different compartments: bone char carbon and activated alumina. It provides dual-action filtration for full contaminant removal.
Pros
- Two different filtration systems for broader coverage
- Easy to install with included instructions
- Higher flow rate than standard 10-inch filters
- Activated alumina removes fluoride without releasing chemicals
Cons
- Weighs 39.6 pounds making handling difficult
- Not ideal if arsenic exceeds 10 ppb in your water
- Higher price point than single-stage systems
This is a 20-inch 2-stage updated PENTEK big blue whole house bone char system with two different compartments. One compartment contains bone char carbon while the other holds activated alumina.
This model is similar to the BCBC-PENTEK with dual bone char, but the main difference is the two distinct filtration systems working together. The PENTEK system provides users with safer and cleaner water through its dual approach.
The 20-inch high flow filters have more surface area compared with 10-inch big blue models. The larger area allows higher flow rates with minimal restrictions throughout your home.
The activated alumina efficiently removes fluoride and arsenic from the water. Both of these harmful substances can appear in water from municipal supplies, and excessive concentration can cause severe health problems.
While removing fluoride from water, activated alumina doesn’t release any chemicals back into the water stream. However, it’s better not to use this system if the concentration of arsenic in your water exceeds 10 ppb.
The bone char filter compartment removes heavy metals including mercury, iron, silver, aluminum, manganese, and bromine. It also reduces other chemical substances, herbicides, and chlorine effectively.
The weight of this product is 39.6 pounds, so you may need help during installation. However, the installation process itself is straightforward with the included guide.
3. AFWFilters BCRF-PENTEK — Best Radial Flow
AFWFilters CF2-4520-BCRF-PENTEK Whole House Filter
This 20-inch PENTEK features bone char carbon and radial flow activated carbon for detailed removal of fluoride, heavy metals, chlorine, herbicides, and pesticides.
Pros
- Easy installation for homeowners with basic plumbing skills
- Removes chemical substances and toxic heavy metals
- Radial flow carbon removes sand, particulates, and sediments
- Higher flow rate compared with standard carbon filters
Cons
- Weighs 35 pounds which is heavier than average
- Two-canister system requires more installation space
- Replacement filters add ongoing cost
The CF2-4520-BCRF-PENTEK is 20 inches and has two stages of upgraded PENTEK big blue filtration. Like other PENTEK models, this one has two filtration compartments: bone char carbon and radial flow activated carbon.
These two canister systems provide customers with safer and cleaner water for drinking and household use. The complete model includes 1-inch NPT outlet and inlet PENTEK with pressure relief valves, filters, and a mounting bracket.
The combination of radial flow activated carbon and bone char carbon effectively removes a wide range of harmful substances. It’s capable of removing fluoride, iron, mercury, silver, aluminum, bromine, manganese, and many more contaminants.
This product also removes toxic chemical substances like chlorine, herbicides, chloramines, pesticides, THM, and MTBE compared with standard carbon filters. The big blue filter has a diameter of approximately 4.5 inches, which provides more surface area and minimizes flow restrictions.
If you possess basic plumbing knowledge, you can set this up in your home within 1 to 2 hours. The weight of the product is 35 pounds, so having an extra pair of hands during installation is recommended.
4. Pentek GAC-20BB — Best 3-Stage
Pentek GAC-20BB Carbon Cartridge
This 3-stage PENTEK system features sediment 5 microns, GAC/KDF 55, and bone char carbon for thorough fluoride removal, toxic substance elimination, and taste improvement.
Pros
- Three-stage process for thorough contaminant removal
- Easy installation with detailed instructions
- Higher flow rate than standard filters
- Energy efficient with no electricity required
Cons
- Weighs 45 pounds making it the heaviest option
- Three canister system needs significant space
- Higher initial investment than single-stage units
This AFWFilters PENTEK big blue model has three stages for fluoride removal, harmful toxic substance elimination, and taste and odor improvement. The three media stages are sediment 5 microns, GAC/KDF 55, and bone char carbon.
These three canister PENTEK bone char carbon filters will provide you with safer and cleaner water without the need for electricity. The complete system includes a 1-inch NPT outlet and inlet PENTEK housing with pressure relief valves.
The bigger 4.5-inch diameter provides greater surface area and minimal flow restrictions compared with standard size filters. This results in higher service flow throughout your entire home.
The sediment 5-micron stage removes sand particles, dirt, and other particulate material from water, making it cleaner and free of unnecessary particles. The GAC/KDF55 compartment reduces heavy metals and removes the metallic taste from your water.
The bone char carbon stage removes arsenic, fluoride, radioactive isotopes, and other toxic chemical substances. You receive complete instructions on the installation process that will allow you to set up the entire system within a couple of hours.
The water filters are very energy-friendly as you don’t need to supply electricity to operate them. However, the weight of this product is 45 pounds, making it the heaviest option on our list.
5. AFWFilters SDBC-PENTEK — Best Sediment Combo
AFWFilters CF2-4520-SDBC-PENTEK Whole House Filter
This 20-inch PENTEK features sediment 5-micron and bone char carbon filtration stages. It removes sand, dirt, particulates, heavy metals, and chemical substances.
Pros
- Sediment 5-micron removes sand particles and dirt
- Easy installation with detailed guide included
- Energy-friendly with no electricity needed
- Greater surface area for minimal flow restriction
Cons
- Weighs 30 pounds which requires careful handling
- Two-stage only may not cover all contaminants
- Replacement filters need periodic purchasing
This 20-inch updated PENTEK big blue features two media stages: sediment 5 microns and bone char carbon. The sediment 5-micron filtering removes sand particles, dirt, and particulates to make water clearer and safer to drink.
The bone char stage removes heavy metals like fluoride, iron, lead, radioactive isotopes, phosphate compounds, mercury, bromine, silver, and manganese. It also eliminates harmful chemical substances along with chlorine, herbicides, and pesticides.
The complete system includes 1-inch NPT outlet and inlet PENTEK filter with pressure relief valves, a mounting bracket, and housing wrench. The big blue filters have a 4.5-inch diameter providing greater surface area and minimal water flow restriction.
You’ll receive an installation guide with detailed information about the filtration process. If you’ve basic plumbing knowledge, you can install it within 2 hours by yourself without any professional help.
The system provides cleaner and safer water, and you don’t need to supply electricity to operate it. The weight of this model is 30 pounds, and no batteries are needed for the system to function.
6. AFWFilters SDBCCB — Best 3-Stage Kit
AFWFilters SDBCCB 3 Stage Whole House Filter
This 3-stage big blue kit purifies water through sediment 5 microns, bone char, and activated carbon block stages. It improves taste and removes radioactive particles.
Pros
- Three stages remove fluoride, arsenic, and radioactive particles
- Replaceable filters for ongoing maintenance
- Improves water taste and removes foul odors
- Easy to install and manage daily
Cons
- Requires some plumbing knowledge for setup
- Multiple filter replacements increase ongoing costs
- May need professional help for complex installations
This AFWFilter comes with a 3-stage big blue kit, meaning water is purified through three separate stages. Many customers have found this bone char filtering system effective at improving the taste of their tap water.
The three stages include sediment 5 microns, bone char, and activated carbon block 5 microns. The 5-micron sediment is a polypropylene filter that provides higher dirt holding capacity.
The sediment stage removes dirt, sand, and other particulates from the water. The 20-inch bone char stage decreases the concentration of arsenic and fluoride as well as radioactive particles, odors, and tastes.
The 20-inch activated carbon block 5-micron absorbs chlorine, repairs the taste, and removes foul odors from your water. The activated carbon block also traps harmful chemical substances by absorbing them effectively.
The product weighs approximately 9 pounds, making it one of the lightest options on our list. You don’t need any batteries to operate the system, and you can manage this filter very easily.
To install it, you’ll need basic knowledge about the product, its components, sizes, and a few other features. The included documentation covers everything you need for a successful setup.
7. AFWFilters 3 Stage Kit — Best Upgradeable
AFWFilters 3 Stage Big Blue Filter Kit
This 3-stage kit features sediment, bone char carbon, and radial flow carbon filtration. It can be used to upgrade your existing 20-inch big blue system.
Pros
- Three stages can remove all harmful substances effectively
- Minimal flow restriction for consistent water pressure
- Can upgrade your present 20-inch blue filter system
- Easy installation for those with basic plumbing knowledge
Cons
- Weighs 14.57 pounds which adds shipping cost
- Three filters mean more parts to maintain
- Not a standalone system without existing housing
This kit has three stages for filtering water comprehensively. The first stage is the sediment 5 microns, a 100% polypropylene filter with graded density that removes dirt, sand particles, and particulates.
The second stage is bone char carbon that removes fluoride and arsenic from water as well as radioactive particles. The third stage is a radial flow carbon filter that eliminates chlorine, metallic taste from heavy metals, and foul odors to maintain a steady flow rate.
To upgrade your big 20-inch blue system, you can use this product. After installation, it includes 20-inch filter housings with dimensions of approximately 4.5 x 20 inches.
You can easily replace the filters whenever needed.
The weight of the item is approximately 14.57 pounds. There are a total of 3 filters included, and you don’t need any batteries to operate the system.
If you’ve basic plumbing knowledge, you can set it up within a couple of hours. You can also call a plumber to install the filter if you prefer professional assistance.
8. AFWFilters CF1-4520-BC — Best Single Canister
AFWFilters CF1-4520-BC-PENTEK Single Canister
This 20-inch single canister PENTEK uses bone char carbon to remove fluoride, radioactive isotopes, and heavy metals. It provides cleaner water without any electricity.
Pros
- Easy installation with detailed instructions provided
- Improves water quality by removing harmful substances
- High flow rate for consistent water delivery
- Replaceable filter for long-term maintenance
Cons
- Single stage may not address all contaminants
- Requires periodic filter replacement purchases
- Limited to bone char filtration only
This is a 20-inch single canister PENTEK that uses bone char carbon for filtering water effectively. The single canister design can efficiently reduce heavy metals like fluoride, radioactive isotopes, lead, iron, aluminum, silver, mercury, manganese, and bromine.
A bone char filter also removes other harmful chemical substances, foul odor, and improves the taste of your water. It can remove chlorine, fluoride, herbicides, chloramines, pesticides, and other substances from your supply.
This single bone char system provides cleaner and safer water, and you don’t need to supply electricity to operate it. The complete product includes a 1-inch NPT outlet and inlet PENTEK filter with a relief valve, mounting bracket, and filter housing wrench.
The bone char filter has a diameter of 4.5 inches, providing greater surface area and minimal flow restrictions. This allows for a greater flow rate compared with standard sized filters.
The manufacturer provides a detailed installation instruction guidebook that allows you to set up the system entirely on your own. The weight of the item is only 17.71 pounds, making it much more manageable than multi-canister systems.
9. Hydronix 3 Stage Kit — Best Alumina Combo
Hydronix RFK3-4520-SDAABC 3 Stage Filter Kit
This 20-inch big blue 3-stage kit features sediment 5-micron, activated alumina, and bone char carbon. Both alumina and bone char work together for maximum fluoride and arsenic removal.
Pros
- Both alumina and bone char remove arsenic and fluoride
- Sediment 5-micron filter improves water taste
- Easy installation procedure with included manual
- No batteries or electricity needed to operate
Cons
- Three stages require more maintenance attention
- Replacement filters for three stages increase costs
- Larger footprint than single-canister systems
This model is a 20-inch big blue 3-stage filter kit featuring sediment 5-micron, activated alumina, and bone char carbon filter stages. All the filters are replaceable for ongoing maintenance.
The 20-inch BB sediment has 5 microns and is 100% polypropylene. It contains excellent graded density which provides relatively higher dirt holding capacity, removing dirt, particulates, and sand particles from the water.
The second stage is a 20-inch BB activated alumina filter that reduces the level of fluoride and arsenic from the water. During the absorbing process, the activated alumina doesn’t release any hazardous byproducts into the water.
The third stage is a bone char filter that removes arsenic and fluoride from the water as well as radioactive particles. It also improves the taste and removes foul odors.
The dimensions are approximately 4.5 x 20 inches, and the weight is around 17 pounds. The installation process is straightforward, and the manufacturer provides a manual so you can set it up entirely by yourself.
10. AFWFilters 3 Stage 20” — Best Whole House
AFWFilters 3 Stage 20" Whole House Filter
This 3-stage 20-inch big blue system features sediment, activated alumina bone char carbon, and radial flow carbon for in-depth whole-house water filtration.
Pros
- Easy installation with complete guideline provided
- Activated alumina and bone char effectively remove fluoride and arsenic
- Maximum water flow with minimal pressure loss
- Complete three-stage filtration for whole-house use
Cons
- Weighs 42 pounds making installation challenging
- Three canister system requires significant space
- Higher cost for replacement filter sets
This is a 3-stage 20-inch big blue whole house activated alumina water filter. The three stages include sediment 5 microns, activated alumina bone char carbon, and radial flow carbon.
This three canister filtration system provides cleaner and safer water, and you don’t need to supply electricity for it to function. It removes a wide range of substances from your water supply.
The first stage sediment 5-micron filter removes dust and sand particles. The middle stage activated alumina bone char carbon system removes heavy metals, arsenic, and fluoride effectively.
The third stage radial flow carbon system removes all harmful chemical substances including chlorine, herbicides, and foul odors. Because of the greater surface area, there are minimal flow restrictions compared with standard filters.
The 20-inch high flow big blue filter has a diameter of 4.5 inches. The installation procedure is straightforward, and the manufacturer provides a complete guideline to set up the entire system.
The complete system includes 1-inch NPT outlet and inlet filter housing with pressure relief valves. The weight of this model is approximately 42 pounds, making it the heaviest system to install.
How We Evaluated
After conducting thorough research on the best bone charcoal water filters, we compiled this full list. We considered cost, installation ease, filtration quality, and customer feedback for each product.
All the water filters on this list are affordable, free of complex installation costs, high quality, and good for whole house use. They offer better and steady flow rates with minimal restrictions, and the filters are easy to replace when needed.
Buying Guide: Choosing the Best Bone Charcoal Water Filter
Number of Stages
Bone charcoal filters come in single, dual, and triple-stage configurations. More stages provide broader contaminant coverage but require more space and higher maintenance costs. See our guide to multi-stage water filters to compare different configurations.
Flow Rate
Look for systems with a 4.5-inch diameter big blue housing, which provides greater surface area and minimal flow restrictions. The 20-inch versions offer higher flow rates than standard 10-inch filters.
Weight
These systems range from 9 to 45 pounds, which affects installation difficulty. Consider whether you’ll need help during the installation process.
Contaminant Coverage
Bone char excels at removing fluoride, arsenic, and radioactive isotopes. If you also need chlorine and VOC removal, look for systems that combine bone char with activated carbon or radial flow carbon. For a DIY approach, learn how to build a DIY charcoal water filter using activated carbon.
Installation
Most systems include detailed installation instructions suitable for homeowners with basic plumbing knowledge. Professional installation typically takes 1 to 2 hours if you prefer expert assistance. For step-by-step guidance, see our article on how to install a whole house water filter. You can also compare bulk activated charcoal options as replacement media for these systems.
Frequently Asked Questions
It's made from animal bones that are cleaned, sun-dried for at least 90 days, then carbonized at 1472 degrees Fahrenheit. What you end up with is a highly porous, 100% organic material that's great at grabbing fluoride, heavy metals, and even radioactive isotopes out of water through adsorption.
For fluoride removal, bone charcoal wins hands down — it's roughly 100 times more porous than coconut carbon, which gives it a huge advantage at absorbing calcium-based contaminants. That said, coconut carbon is actually better at tackling chlorine and VOCs. That's why a lot of systems combine both for the best of both worlds.
Plan on swapping them out every 6 to 12 months, though the exact timing depends on your water quality and how much water you're running through the system daily. The manufacturer's replacement schedule is your best guide here.
Not necessarily. If you're comfortable with basic plumbing, most of these systems can be installed in 1 to 2 hours — they all come with detailed instructions. But if you're not confident working with pipes and fittings, there's no shame in calling a plumber.
Final Thoughts
If fluoride in your water is something you're concerned about, bone charcoal filters are genuinely one of the best solutions out there. Standard carbon filters just can't compete when it comes to fluoride removal.
We put this list together based on real customer feedback, filtration performance, ease of installation, and overall value. Every system here brings something different to the table, so the right pick really depends on your water quality and how much space you've got.
For whole-house fluoride, arsenic, and heavy metal removal, it's hard to go wrong with any of these. Just match the configuration to what your home actually needs.
The AFWFilters CF2-4520-BCBC-PENTEK is our top pick for the best bone charcoal water filter. Its dual bone char carbon system provides the ultimate fluoride removal while delivering clean, safe water for your entire home without any electricity required.
