A glass of drink water and filter cartridges at bright blue background

Alexapure vs Berkey: Which Gravity Filter Wins in 2021?

More people live in areas with more contaminated water than they realize and are unaware that not having clean water can become quite a serious health issue for them and their families. If you suspect that you might have high levels of some of these harmful contaminants you can call your local water authority or purchase an at-home water contaminant test.

If you are like most people and need a great water filter, you can turn to big brands like Alexapure and Berkey. But which one is best? Read on and find out the differences between these gravity filters with this in-depth guide!

Overview
Big Berkey BK4X2 Countertop Water Filter System with 2 Black Berkey Elements and 2 Fluoride Filters
Alexapure Pro Stainless Steel Water Filtration System - 5,000 Gallon Throughput Capacity
Title
Big Berkey Gravity Countertop Water Filter
Alexapure Pro Water Filtration System
Price
$407.00
$339.99
Rating
⭐⭐⭐⭐⭐
⭐⭐⭐⭐
Overview
Big Berkey BK4X2 Countertop Water Filter System with 2 Black Berkey Elements and 2 Fluoride Filters
Title
Big Berkey Gravity Countertop Water Filter
Price
$407.00
Rating
⭐⭐⭐⭐⭐
Overview
Alexapure Pro Stainless Steel Water Filtration System - 5,000 Gallon Throughput Capacity
Title
Alexapure Pro Water Filtration System
Price
$339.99
Rating
⭐⭐⭐⭐

What Are The Differences Between The Alexapure Pro And The Big Berkey Water Filters?

Now that you understand how countertop and gravity water filters work, we can get into the specifics of both the Big Berkey Gravity-Fed Countertop Water Filter and the Alexapure Pro Water Filtration System as well as their differences. In order to do that, we will look at five essential factors: filter effectiveness, capacity and flow rate, cost of ownership, ease of maintenance, and reliability.

In the end, we will have a full rundown of each of the filters’ characteristics and we will also name the overall winner. Before we get into each of the filter’s characteristics, it is important to note that both the Alexapure and the Berkey are a good option regardless: they are both effective, affordable, and long-lasting. They also work with both well water and city water and you can also use them in car camping, RV travel, traveling with a tiny home, or living fully off the grid with a rainwater catchment system.

Big Berkey BK4X2 Countertop Water Filter System with 2 Black Berkey Elements and 2 Fluoride Filters
  • Includes Big Berkey stainless steel housing (Upper, Lower, Lid and spigot etc.), 2 Black Berkey Filters, and 2 Fluoride Elements.

How Effective Are The Alexapure Pro And The Big Berkey Water Filters? Which Is More Effective?

Both the Big Berkey Gravity-Fed Countertop Water Filter and the Alexapure Pro Water Filtration System are quite effective water filters. Both of them remove 99.99 percent of a vast array of chemical, bacterial, virological, heavy metal, and pharmaceutical contaminants including e.coli, salmonella, petroleum products, arsenic, lead, and manganese.

Independent laboratory tests have verified that both water filters meet ANSI and NSF standards (American National Standards Institute and National Science Foundation) for the filtration of over 200 water contaminants, although neither of them has applied for proper NSF certification. Here is a simple rundown of some of the contaminants removed by both the Alexapure and Berkey:

Chlorine Removed:

  • Berkey – 99.9%
  • Alexapure – 99.9%

Chloroform Removed:

  • Berkey – 99.9%
  • Alexapure – 99.9%

Chromium VI Removed:

  • Berkey – 99.8%
  • Alexapure – 98.7%

Copper Removed:

  • Berkey – 99.9%
  • Alexapure – 99.0%

Lead Removed:

  • Berkey – 99.9%
  • Alexapure – 96.4%

You can check the full list of contaminants each of them removes individually on the manufacturers’ websites, and you can then compare them with the type of harmful contaminants found in your tap water by calling your local water authority or purchasing an at-home water contaminant test.

All in all, it is a tie for both the Big Berkey Gravity-Fed Countertop Water Filter and the Alexapure Pro Water Filtration System in terms of their effectiveness. However, it is important to note that for the Berkey filter, you have the option to purchase additional filters separately (such as fluoride filters) for additional contaminant filtration.

Alexapure Pro Stainless Steel Water Filtration System - 5,000 Gallon Throughput Capacity
438 Reviews
Alexapure Pro Stainless Steel Water Filtration System - 5,000 Gallon Throughput Capacity
  • Removes up to 99.9999% of 200+ water impurities, including lead, bacteria, viruses, cysts, chlorine, fluoride, TCP, E. coli

What Is The Cost Of Ownership Of The Alexapure Pro And The Big Berkey Water Filters? Which Is More Affordable?

This is another area in which both the Big Berkey Gravity-Fed Countertop Water Filter and the Alexapure Pro Water Filtration System are quite similar. They are both incredibly close in terms of price, but in the end, the Alexapure is the cheaper option over the Berkey.

The Berkey filters are more expensive than the Alexapure filters; however, they also last longer. While the Alexapure filters feature a filter life of around 5,000 gallons of water (or around 3 years of use until you have to purchase replacement filters), the Berkey ones will last you around 6,000 gallons of water (or around four years of use). So in the short term, the Alexapure filters are the cheapest option, but in the long term, the Berkey filters will likely cost you less money as the price per gallon for the Berkey is 4 cents while the price is 6.2 cents for the Alexapure.

What Is The Capacity and The Flow Rate Of The Alexapure Pro And The Big Berkey Water Filters? Which Has The Highest Capacity And Flow Rate?

Both the Big Berkey Gravity-Fed Countertop Water Filter and the Alexapure Pro Water Filtration System offer dual 2.25-gallon water tanks for a total capacity of 4.5 gallons of water. The Berkey filter (when featured with the maximum number of elements – four Black Berkey filter elements) provides a 7 gallons per hour flow rate while the Alexapure filter provides a 9.2 gallons per hour flow rate (also featured with the maximum number of filters).

These numbers can fluctuate depending on the types of filters you choose to put in your Berkey filter – while the Alexapure only features one type of filter, Berkey has several that you can choose from:

  • The Travel Berkey (1.5 gallons)
  • The Big Berkey (2.25 gallons)
  • The Royal Berkey (3.25 gallons)
  • The Imperial Berkey (4.5 gallons)
  • The Crown Berkey (6 gallons)
  • The Berkey Light (2.75 gallons) (made with BPA-free plastics)

This one is a hard one to judge since, on its face, the Alexapure is the more powerful water filter. On the other hand, however, the Berkey does offer a significant list of water filter choices, some of which would end up outperforming the Alexapure on both water capacity and water flow rate. Whichever water filter you believe to be the winner here will mainly depend on whether you would be willing to spend extra money for the higher capacity Berkey filters.

How Easy Are The Alexapure Pro And The Big Berkey Water Filters To Maintain? Which Has The Highest Ease Of Maintenance?

Both the Big Berkey Gravity-Fed Countertop Water Filter and the Alexapure Pro Water Filtration System are stainless steel water filters and they are quite identical in terms of their construction. They both have nesting stainless steel reservoirs with small spigots.

All you need in terms of maintenance is to remove the filters and clean the inside of the reservoirs with soap and water. You can put both of these products in the dishwasher also. The only other maintenance is priming, scouring, and replacing filters.

It is another tie for both the Alexapure and the Berkey system in this category. It is also important to note that while Alexapure offers a one-year warranty, Berkey offers an exclusive lifetime warranty, which might make a difference for you in terms of maintenance costs.

How Reliable Are The Alexapure Pro And The Big Berkey Water Filters? Which Is The Most Reliable?

As was mentioned above, both the Big Berkey Gravity-Fed Countertop Water Filter and the Alexapure Pro Water Filtration System come with nesting stainless steel bodies, removable filter elements, and very few parts that can actually wear out. However, the Berkey brand has been around for much longer than the Alexapure brand and is generally regarded as a very reliable water filter brand. This means that the general consensus is that the Berkey filters would win in this category.

What Is The Winner On This List (+An Overall Rundown Of The Alexapure Pro And The Big Berkey Water Filters)? 

Overview
Big Berkey BK4X2 Countertop Water Filter System with 2 Black Berkey Elements and 2 Fluoride Filters
Title
Big Berkey Gravity Countertop Water Filter
Price
$407.00
Rating
⭐⭐⭐⭐⭐
Overview
Big Berkey BK4X2 Countertop Water Filter System with 2 Black Berkey Elements and 2 Fluoride Filters
Title
Big Berkey Gravity Countertop Water Filter
Price
$407.00
Rating
⭐⭐⭐⭐⭐

In the end, it seems that although it is an extremely tight race, the Big Berkey Gravity-Fed Countertop Water Filter has a bit more advantages than the Alexapure Pro Water Filtration System. While we would recommend the Alexapure Pro Water Filtration System to those on a tighter budget, since it is cheaper, overall, the Big Berkey Gravity-Fed Countertop Water Filter seems to be the best water filter, and certainly the most popular choice.

Regardless, here you can find a full rundown of the features of each product so you can compare them better:

Big Berkey Gravity-Fed Countertop Water Filter:

  • It is the best overall option
  • It filters out 99.99 percent of potentially lethal viruses and pathogenic bacteria
  • It is certified to remove more than 200 known contaminants such as heavy metals, pharmaceuticals, and chemicals
  • It is EPA certified for peace of mind
  • There is a simple design that makes it incredibly easy to clean and maintain
  • The nesting tank design allows you to pack it up for more compact storage
  • The burnished stainless steel body allows it to fit in well with most settings
  • A water capacity of 2.25 gallons in each tank
  • It is rated 4.7 out of 5 on Amazon based on nearly 900 reviews

Alexapure Pro Water Filtration System:

  • It features the best value for money
  • It reduces up to 99.99 percent of over 200 different chemical, pathogenic, and pharmaceutical contaminants
  • It features a block filter with a hybrid ceramic shell
  • The nesting design makes it easy to disassemble for cleaning and storage
  • There is a 2.25-gallon tank capacity
  • The filter offers an extended lifespan even with daily use
  • The filters can filter 5,000 gallons before requiring replacement
  • With the purchase of the Super Flow Kit you can filter up to 20,000 gallons before filter replacements, and at a much faster rate
  • It is rated 4.8 out of 5 out of nearly 400 reviews
Overview
Big Berkey BK4X2 Countertop Water Filter System with 2 Black Berkey Elements and 2 Fluoride Filters
Alexapure Pro Stainless Steel Water Filtration System - 5,000 Gallon Throughput Capacity
Title
Big Berkey Gravity Countertop Water Filter
Alexapure Pro Water Filtration System
Price
$407.00
$339.99
Rating
⭐⭐⭐⭐⭐
⭐⭐⭐⭐
Overview
Big Berkey BK4X2 Countertop Water Filter System with 2 Black Berkey Elements and 2 Fluoride Filters
Title
Big Berkey Gravity Countertop Water Filter
Price
$407.00
Rating
⭐⭐⭐⭐⭐
Overview
Alexapure Pro Stainless Steel Water Filtration System - 5,000 Gallon Throughput Capacity
Title
Alexapure Pro Water Filtration System
Price
$339.99
Rating
⭐⭐⭐⭐

What Is A Gravity Water Filter?

There are several different ways through which you can filter water in your home. A gravity water filter is one of them. As the name suggests, this type of water filtration system uses gravity in order to filter through contaminated water. In this kind of water purifier system, there are two chambers, an upper chamber, and a lower chamber.

The contaminated water is poured into the upper chamber and the filtered water is collected in the lower chamber after it is passed through a carbon block filter element with microscopic pores. These pores are big enough to let water molecules through but small enough to not allow contaminants through. These kinds of water filters are more economic and do not require plumbing or electricity for them to function. There are many more types of water filters, which you can find here:

Reverse Osmosis Filter

  • It is an easy, fast and effective process
  • The micron size can be adapted to the type of contaminants in your home

Activated Alumina Filter

  • It is one of the only filters that effectively removes fluoride
  • It is inexpensive and effective
  • It can leak a small amount of aluminum

Ceramic Filter

  • It is a natural method
  • They can filter through bacteria and protozoans effectively
  • They are not as effective at removing viruses
  • There can be an increase in bacterial contamination with poor-quality filters

Water Distillation

  • It is highly effective
  • It can also improve the smell and taste of the water.
  • It is a slow process

Ultraviolet Water Purifying System

  • It kills bacteria, parasites, and viruses
  • It does not remove contaminants like minerals or lead

Activated Carbon Filter

  • It removes contaminants, bad odor, and taste
  • It does not require electricity
  • It does not eliminate minerals or salts

Granulated Carbon Filter

  • It is inexpensive
  • It is less effective
  • Water pressure has a significant influence on its effectiveness

Ion Exchange Filter

  • It can soften hard water
  • It does not require electricity
  • It requires regular maintenance
Overview
Big Berkey BK4X2 Countertop Water Filter System with 2 Black Berkey Elements and 2 Fluoride Filters
Alexapure Pro Stainless Steel Water Filtration System - 5,000 Gallon Throughput Capacity
Title
Big Berkey Gravity Countertop Water Filter
Alexapure Pro Water Filtration System
Price
$407.00
$339.99
Rating
⭐⭐⭐⭐⭐
⭐⭐⭐⭐
Overview
Big Berkey BK4X2 Countertop Water Filter System with 2 Black Berkey Elements and 2 Fluoride Filters
Title
Big Berkey Gravity Countertop Water Filter
Price
$407.00
Rating
⭐⭐⭐⭐⭐
Overview
Alexapure Pro Stainless Steel Water Filtration System - 5,000 Gallon Throughput Capacity
Title
Alexapure Pro Water Filtration System
Price
$339.99
Rating
⭐⭐⭐⭐

What Is A Countertop Water Filter?

This section refers to the placement of the water filter product in your home and how it is attached to your water line and your water supply. A countertop water filter refers to a kind of water filter that is attached to your sink faucet through a diverter tube and, as the name suggests, is placed on your countertop.

It diverts the incoming water from your faucet into the filter, gets filtered through the cartridges, and comes out through your filter’s own faucet and back into your sink. These kinds of filters often have a high capacity and they can switch easily between filtered and unfiltered water. They also require installation and often need a decent amount of space on your counter. If you would like to check out other types of water filter products, you can check out this next list:

The Water Pitcher Filter

  • They are a widespread and affordable solution
  • They are free-standing
  • They improve the taste and odor of water
  • They have a short shelf life and need to be replaced regularly

The Faucet Water Filter

  • They attach easily to any faucet
  • They are inexpensive
  • They filter water right at the tap
  • They slow the water flow

Whole-House Water Filters

  • They treat all water in the house
  • They can remove volatile organic compounds
  • They require professional maintenance

Under-Sink Water Filters

  • They are attached to your kitchen faucet
  • They can be used for drinking as well as cooking
  • They have a fast flow rate and are very effective
  • They are space-saving

Refrigerator Water Filters

  • It removes bad odors and tastes
  • It eliminates contaminants
  • It needs to be replaced regularly

Portable Water Filters

  • It has a small design for camping and hiking
  • It removes microorganisms
  • It only filters limited amounts at a time
Overview
Big Berkey BK4X2 Countertop Water Filter System with 2 Black Berkey Elements and 2 Fluoride Filters
Alexapure Pro Stainless Steel Water Filtration System - 5,000 Gallon Throughput Capacity
Title
Big Berkey Gravity Countertop Water Filter
Alexapure Pro Water Filtration System
Price
$407.00
$339.99
Rating
⭐⭐⭐⭐⭐
⭐⭐⭐⭐
Overview
Big Berkey BK4X2 Countertop Water Filter System with 2 Black Berkey Elements and 2 Fluoride Filters
Title
Big Berkey Gravity Countertop Water Filter
Price
$407.00
Rating
⭐⭐⭐⭐⭐
Overview
Alexapure Pro Stainless Steel Water Filtration System - 5,000 Gallon Throughput Capacity
Title
Alexapure Pro Water Filtration System
Price
$339.99
Rating
⭐⭐⭐⭐
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Joshua Perkins

Joshua spent ten years as a water systems technician in California before settling down with his wife and two young children in Nashville in 2018. Through all of his experience, he learned the benefits and shortfalls of so many different types of water filtration systems, from pitchers to whole-house installations. He started Water Filter Authority in 2019 to empower other families to make the right decision for their long-term health and wellness.