What is a Countertop Water Filter and what are the best ones?


Are you living in a rented home without an adequate filtration system? Or do you need a fast, affordable way to clean your drinking water? A countertop water filter might be the solution.

Your area may have hard water, well water, or maybe an outdated piping system made from toxic metals such as lead. In any case, you should NEVER drink water directly from the tap

Tap water can expose you and your family to harmful pollutants and health problems like:

  • -Intestinal cramping
  • -Gastrointestinal problems
  • -Fertility issues
  • -Dehydration
  • -Nausea
  • -Diarrhea

Many consumers turn to bottled water as a healthier alternative. However, this option can become very expensive and expose you to harmful plastics used to make the bottles. 

A countertop filtration system is the best alternative. These products tend to be very easy to set up. A countertop system is also the best choice if you don’t want to invest in installing a complicated and expensive home filtration system. 

However, even though countertop units are pretty affordable, you shouldn’t buy one without first doing some research.

Below, we’ve detailed everything you need to know as you begin to look for the right one for your home. We’ve also reviewed the top seven best countertop water filters to help you start narrowing down your options. 

What Is a Countertop Water Filter?

A countertop water filter is an appliance that removes contaminants from your drinking water. As its name implies, you install it right next to your sink, and it sits on your countertop. 

This device improves the quality of your water and often removes up to 90% or more of contaminants.

A countertop water filter will reduce your dependence on bottled water, and you’ll save hundreds of dollars every year on wasteful plastic water bottles. Plus, you’ll enjoy the convenience of being able to access safe drinking water straight from your tap.

Most countertop water filters are incredibly compact. You can enjoy the benefits of one without it taking up a lot of space in your kitchen. 

They provide safer drinking water on the go because they are very easy to carry and transport. Renters who don’t stay in one home for very long find it is easy to take countertop water filters with them from place to place. 

Because it doesn’t require any kind of plumbing or permanent installation, you can take a countertop water filter with you on vacation, on a boat, or in an RV. 

What Are the Different Types of Countertop Water Filters?

Before diving into the seven best countertop water filters, it will help to know the different systems and styles available to you.

Most countertop units are incredibly easy to use and do a great job of removing contaminants. While all of them achieve the same goal, there are different types of water filters:

Filter Dispensers

The first type is a filter dispenser. This appliance does not connect to your faucet. Instead, it sits on your countertop by itself.

The design of a dispenser consists of an upper and lower chamber. You pour water into the top chamber and allow it to run through the various cartridges. 

Some buyers are wary of water filter pitchers because of concerns about efficiency. However, a dispenser is best for limited counter space

You can set a dispenser anywhere in your kitchen and move it around as you need, as it doesn’t require electricity or connection to a faucet. This product is ideal if you work in an office with a lot of constant activity. 

You will need to fill up a pitcher occasionally, but this drawback is minuscule compared to the portability that it offers. 

Reverse Osmosis (RO) Filters

A reverse osmosis system is arguably one of the most effective methods available. It can eliminate almost any water pollutant, including sediments, chemicals, and heavy metals.

One of the drawbacks of an RO system is that it produces a slow flow. However, this process shouldn’t be an issue in smaller households. 

In the past, RO systems came with a tank and several cartridges. They usually installed under the sink because they were an eyesore.

In recent years, the countertop versions have gained a lot of popularity. They feature more aesthetically-pleasing designs and are simpler to install. However, RO systems are best if you have a lot of countertop room to spare, as they are bulkier than other filtration devices on the market.

RO systems offer superior performance, and they are best for high-risk water pollutants.

Sink-Top Filters

A sink-top system usually comes with a cartridge encased in a metal or plastic housing and an accompanying spout where the clean water flows. 

This kind of system is usually the least intrusive, as it can rest right next to your standard faucet. 

It offers a quick and affordable solution to cleaning water polluted with fluoride or chlorine. 

How Do Countertop Water Filters Work?

Most countertop water filters may seem simple enough. However, they use an intricate process to make your water safe to drink. Depending on the specific type and brand of countertop water filter you get, the method may vary slightly. 

Even though there are several types of countertop water filters, they all work in similar ways. Learn more about each step in the process below:

1. Mechanical Filtration

The water starts by passing through a filter with small pores, which are usually 0.1-0.3 microns in length. These pores generally remove traces of rust, sediment, and other particles and impurities present in your water. They will often remove some parasites and large bacteria.

2. Water Softening

During the water softening process, ion exchange resins will remove magnesium and calcium from your drinking water. This process also gets rid of some heavy metals and other toxins. 

3. Activated Carbon Filtration 

This step is arguably one of the most important in the water filtration process. It gets rid of organic contaminants like chlorine, volatile organic compounds, disinfectants, herbicides, and pesticides. 

4. Alkalization (Optional)

The next four steps are not vital to the filtration process. The following cartridges only come with some products. Some products may have all four, while others may only include a couple or none at all. 

Alkalization is the first optional step. It uses infrared rays to ionize your water’s acidic components. Naturally, it also makes your water more alkaline. 

A lot of users consume alkaline water for its many health benefits, including boosted immunity and bone health.

5. KDF Filtration (Optional)

This step is the next optional process. A KDF cartridge uses a chemical process called oxidation-reduction, also known as redox, to improve the quality of your water further. This process reduces substances like hydrogen sulfide, mercury, iron, lead, and chlorine. 

6. Silver Filtration (Optional)

A silver cartridge will eliminate substances that managed to slip through the earlier processes. These substances include heavy metals, viruses, bacteria, and toxins.

7. Re-mineralization (optional)

The re-mineralization cartridge is not as standard as the previous three cartridges. However, some users want one to release magnesium and calcium ions back into their drinking water. This step is critical to some consumers because the softening process often strips away these healthy minerals. 

The Top 7 Best Countertop Water Filters

Do you think you have a handle on what to look for when purchasing a countertop water filter?

If so, you’re ready to start looking for the right product for your home. You’ll want to find the most efficient model with minimal drawbacks based on your countertop space and current water quality.

Here’s our breakdown of the top seven best countertop water filters:

#1 Big Berkey Gravity-Fed Water Filter

If you are looking for the best countertop water filter out there, look no further! The Big Berkey Gravity-Fed model is by far our favorite.

This product is one of the most efficient for purifying water (not just filtering it). It removes more than 99.999% of viruses and pathogenic bacteria. It also eliminates most protozoa and trihalomethanes. It’s even powerful enough to reduce the presence of heavy metals and pharmaceutical drugs dramatically. 

Thankfully, you don’t have to take Berkey’s word for it. Berkey’s manufacturer, New Millennium Concepts, Ltd., conducts independent testing on its products. The results show that the Big Berkey effectively purifies every gallon. The third-party vetting means you can confidently fill up from pretty much any source (your faucet, a nearby lake, etc.).

The Big Berkey archives full purification thanks to its Black Berkey Purification Elements. Your purchase comes with two, which is more than enough to do the job. The one pair should last around 6,000 gallons, meaning you won’t have to replace the elements that frequently.

While your purchase only comes with two purification elements, the system can hold up to four. If you want to improve the flow rate, consider purchasing an additional pair. Keep in mind that this is optional. If you don’t care about a slower flow rate and want to save money, two purification elements will do the trick. 

Besides these factors, one of the best parts of the Big Berkey is its versatility. You can take it anywhere as it doesn’t require electricity or tools to set up. Families use it in their homes, on camping trips, etc. It’s compact enough to take on-the-go while still being big enough to hold plenty of water. Plus, thanks to its stainless steel exterior, it can withstand heavy use. 

One minor complaint we have about this product is that it doesn’t come with a stand. You can’t get by without one, seeing as the spigot sits so close to the bottom. You’ll either have to purchase a stand separately or make a makeshift one. Note that it isn’t efficient to have the system rest on the side of a countertop. 


  • Capacity: 2.25 gallons
  • Filter lifespan: 6,000 gallons (per every pair of purification elements)
  • Finish material: stainless steel
  • Dimensions: 8.5 x 8.5 x 19.25 inches


  • Purifies (not just filters) every gallon
  • Removes more than 99.999% of viruses and pathogenic bacteria
  • Drastically reduces inorganic materials, protozoa, heavy metals, and pharmaceutical drugs
  • Economical (one pair of purification elements lasts around 6,000 hours)
  • Option to add a pair of purification elements to increase the flow rate
  • Portable and versatile


  • Doesn’t come with a stand


If you want a reliable, sturdy system, with an excellent 99.999% purification rate and a long-lasting, 6,000-gallon cartridge, you can’t go wrong with the Big Berkey. Check out this favorite of ours on Amazon today!

#2 AQUA TRU Filtration Purification Countertop System

The AQUA TRU Countertop is another excellent option. Like the Big Berkey, it goes beyond standard water filtration thanks to its purification process. 

This product features its patented Ultra Reverse Osmosis system. Water flows through the following four stages, including a Mechanical Pre-Filter, a Reverse Osmosis Pre-Filter, and an Activated Carbon Filter. 

The process is NSF-certified to target 82 contaminants effectively. It removes up to 95.2% of copper, 96.6% of chlorine, 99.1% of lead, etc. It results in water that is not only safe to consume but also tastes refreshing.

When you receive your AQUA TRU Countertop system, you’ll enjoy the easy setup. There’s no plumbing or installation required. All you have to do is follow simple instructions to insert and clean the filters. One set of filters should last as long as 4,500 water bottles would, meaning you won’t have to replace them for a while. 

This product is small and compact enough to sit right on your countertop. Its design is simple and sleek, allowing it to blend in with your existing decor. It has a somewhat small capacity (1 gallon), but it’s not difficult to refill seeing as it sits on your countertop. 

Keep in mind that this model is not ideal for travel. It will be a pain to have to fill the system on-the-go continually. Also, considering its shape and plastic material, it won’t fit well anywhere else other than your countertop.


  • Capacity: 1 gallon
  • Filter lifespan: 4,500 water bottles (per every set of filters)
  • Finish material: plastic
  • Dimensions: 14 x 14 x 12 inches


  • Features a unique Ultra Reverse Osmosis system
  • NSF-certified to remove 82 contaminants
  • Easy to set up and refill at home
  • Fits perfectly on your countertop


  • Not durable enough for travel


This product from AQUA TRU is perfect for home use. If your home has unreliable tap water, check this product out on Amazon

#3 OnliPure Zero Installation Purifier Reverse Osmosis

This next product is yet another countertop water filter that uses reverse osmosis. If you’re willing to shell out the money, it will make a fantastic addition to your kitchen. 

As you would expect, the reverse osmosis system does a fantastic job of removing contaminants. It is CE-certified and will eliminate 99% of contaminants, including lead and chlorine

The four stages of filtration ensure that you get clean, great-tasting water every time. If you use this system as much as the average user, you can expect only to have to replace the filters annually. You’ll know when it’s time to swap them out thanks to the LED filter replacement indicator

Setup is a breeze seeing as you won’t need any tools. Once you get the system going, you’ll be happy to realize that its operation is just as smooth as its setup. The pump operates quietly, and the tank is removable for easy cleaning.

Users particularly love this system’s smooth, modern design. It will fit perfectly into your apartment or home. It’s also compact, meaning you won’t have trouble finding a spot for it. You can even wedge it into tight spaces as you fill it from the front (you won’t need clearance on the top or sides). 

Our one complaint about this product is its price tag. It is the most expensive item on our list. While you can find similar models at a lower price, you might find this one to be worth the cost. It’s highly efficient and will provide your family with plenty of clean water. It’s durable and should last you for several years. Plus, you may end up saving money thanks to the long-lasting filters. 


  • Capacity: 1 gallon
  • Filter lifespan: On average, you’ll have to replace the filters annually
  • Finish material: BPA-free plastic
  • Dimensions: 18.8 x 17.6 x 12.2 inches


  • CE certified
  • Removes 99% of contaminants (lead, chlorine, etc.)
  • You only need to replace the filters approx. once every year
  • LED indicator that lets you know when it’s time to change the filter
  • Easy setup
  • Quiet operation
  • Modern design


  • Expensive


This product from OnliPure is pricey, but if you have the money, it will be well worth the investment. Check out its latest price here

#4 AlcaPure Purifier RO Countertop

The AlcaPure Zero Installation Purifier Reverse Osmosis Water Filter is a dispenser that sits right on your countertop. There are no hoses or diverter valves to mess with, and you don’t have to worry about assembly or installation.

To fill it up, all you have to do is load water into the front. You don’t need to have additional clearance on the top or sides, so you can easily store it in a tight space. The modern, compact design is perfect for RVs, condos, apartments, and college dorms

This appliance comes in two color options: silver-white or space-black. The choice between these two different colors will help you better match the current design of your kitchen, so your new dispenser won’t stick out like a sore thumb.

When it comes to improving water quality, the AlcaPure does a decent job. It uses reverse osmosis to remove up to 99% of contaminants like chlorine, fluoride, and heavy metals. Its CE-certified pump operates quietly, so you don’t have to worry about it being a nuisance. 

One complaint about this product is that it doesn’t remove total dissolved solids (TDS) entirely. If you want a product that does this, you will have to purchase RKIN’s OnliPure model, which is slightly more expensive than the AlcaPure. Even when you buy the OnliPure, you will be missing out on alkaline water with a pH between 7 and 8. RKIN consumers are frustrated by both products’ inabilities to deliver both benefits. 


  • Capacity: 1 gallon
  • Filter lifespan: 12 months
  • Finish material: plastic
  • Dimensions: 14.5 x 9.5 x 16.25 inches


  • Two color options
  • Space-efficient design
  • CE certified
  • Removable top and bottom containers for easy cleaning
  • Quiet pump
  • Easy single-button operation
  • LED indicator light
  • Efficient 4-stage cleaning technology


  • Does not completely remove total dissolved solids (you have to buy RKIN’s more advanced model for this benefit)


If you’re looking for a quiet, easy-to-use, and effective RO countertop water filter, check out the AlcaPure on Amazon

#5 Express Water Countertop Reverse Osmosis Water Filtration System

This product from Express Water removes up to 99.99% of over 100 contaminants, including lead, cyanide, calcite, asbestos, giardia, and chlorine. It uses reverse osmosis to remove the most difficult contaminants like radium, TDS, and arsenic. 

The setup process for this faucet filter is as easy as it can get. It features a 4-point connection system that you can complete without tools. When you do it correctly, it should be leak-proof, so you don’t have to worry about making a mess. 

This countertop unit is compatible with most standard kitchen and bathroom faucets. It comes with two additional adapters that will be helpful for some fixtures. 

The major drawback to this product is its appearance. It features four white cylinders laid sideways and a mismatched silver spigot. Each cylinder has a large blue sticker with a corresponding color of orange, yellow, and green to label its purpose. This combination of colors creates a bold contrast that will not match a modern kitchen design. 

This product is also rather bulky, so you will have to clear away a significant amount of space next to your sink for it to fit comfortably. 

If you don’t have the space near your sink, it comes with additional tubing so you can set it up about three feet away from your faucet.

Another drawback is that the RO membrane needs replacing every year, which is more often than other models.


  • Capacity: Delivers 3 to 4 gallons per hour
  • Filter lifespan: 6 months
  • Finish material: Plastic and stainless steel
  • Dimensions: 17.1 x 12 x 9.9 inches


  • Fits most standard bathroom and kitchen faucets
  • The final stage of the 4-cartridge system removes any leftover tastes and odors
  • No tools required for installation
  • Features a simple 4-point connection system to set up
  • A flow rate of up to 4 gallons per hour


  • Unattractive design
  • Requires annual RO membrane replacement


Even though the design of this filter reveals its cartridges, it’s still an efficient and affordable product for your kitchen. Check it out on Amazon here

#6 APEX EXPRT Dual 5 Carbon Block Countertop Drinking Water Filter (MR-2050)

Here, we have yet another countertop water filter. This one from APEX produces clean, delicious alkaline water

The cartridges remove 99% of harmful contaminants like chlorine, benzene, radon, and other heavy metals. It also prevents the build-up of microorganisms. Besides making water safe to drink, this function improves the taste and eliminates foul smells.  

APEX says that a pair of cartridges should last 4-6 months for the average family. There is no indicator to let you know when it’s time to replace them. You’ll either have to keep track of it yourself or wait until your water starts tasting funky. Not ideal, but for the price, not having an indicator isn’t a huge deal.  

Another thing we don’t care for is the installation process. You’ll have to put this somewhat bulky product right next to your sink and connect it to your faucet via an adapter. 

Before ordering, you should make sure that your faucet is compatible with this product. APEX includes two adapter sizes with your purchase. 

Upon request, there are two other sizes available plus a universal adapter. Figuring out which one you need isn’t that difficult. But, many users see it as an inconvenient extra step when other products don’t require installation. 


  • Capacity: connects to your faucet
  • Filter lifespan: 4-6 months for one pair
  • Finish material: plastic
  • Dimensions: 16 x 12 x 6 in


  • Removes 99% of harmful contaminants like chlorine, radon, etc.
  • One pair of cartridges lasts around 4-6 months
  • Affordable
  • Different adapter sizes are available


  • No indicator to let you know when it’s time to change the cartridges
  • You must determine what adapter size you need
  • Bulky design


This product from APEX isn’t our first pick, but many users find it to be a reliable option. It might be right for you, too (especially if you’re on a budget). Check out its latest price on Amazon

#7 Lake Industries Stainless Steel Countertop Water Purifier Filter

The Lake Industries Stainless Steel Water Purifier is the most affordable countertop water filter on our list. It uses a 10-micron carbon block cartridge to remove chlorine and sediments like dirt and sand. 

The appliance removes up to 97% of these contaminants, which is not excellent, considering other brands can promise up to 99% or more. The two percentage points can make a big difference, especially if your water quality is particularly bad. 

The cartridges are simple enough to replace. The product comes with a convenient filter wrench that you can use to make the switch within minutes. 

Even though this Lake Industries appliance is on the cheaper price end, the manufacturer did not sacrifice aesthetics. Its stainless steel construction will blend in with the design and fixtures of most modern kitchens. 

Lake Industries markets this product as having a “simple, one-step” installation process, which isn’t always true. The diverter valve can leak on some faucet models, which can make it incredibly challenging to use the filter regularly. If your faucet is not compatible, you’ll need to install a new faucet head.

Another drawback to this product is that it produces bad-tasting water if you don’t run it for five minutes before every use. If you drink the water straight away, it will have a charcoal taste due to the filter. 

The resulting water tastes great, but it is highly impractical to wait this long every time you want a glass of water.

On the bright side, this filter comes with a ¾” full port spout, which offers a highly efficient flow rate. 


  • Capacity: 1,000 gallons over its lifetime
  • Filter lifespan: 8 months
  • Finish material: stainless steel
  • Dimensions: 6 x 4 x 13 inches


  • NSF-certified carbon cartridge
  • Simple and modern design
  • ¾” spout that offers an efficient flow rate
  • Effective 10-micron carbon filter
  • Easy cartridge replacement process


  • • It doesn’t remove as high of a percentage of contaminants as other filters
  • • Users have reported that it’s tricky to install properly
  • • Water will taste charred if you do not allow it to run for five minutes before drinking it


This product from Lake Industries is not the best-performing item we’ve reviewed. However, for the price, it is a reasonable solution, especially if you are only staying in a residence for a few months. Check it out on Amazon here.

What to Consider When Buying a Countertop Water Filter

Not sure where to start with buying a countertop water filter? Here are some essential factors to consider to help narrow down your decision:


You should always consider the size of your countertop water filter. While all of these products are compact, some may not fit into the space you have available. 

If you choose a faucet filter, make sure the model will fit comfortably onto your countertop. 

If you choose a pitcher, ensure that the device won’t take up too much room wherever you’ll be storing it most frequently. 

Before you buy any type of countertop water filter, have an idea of where you’re going to store it. This planning will help you select a properly-sized one.


There are thousands of countertop water filters available, and not all of them will meet your needs. You should narrow down your options by analyzing a variety of factors, and the cost is a critical one. 

Good countertop filters start for as low as $60 and can go for up to several hundred dollars. The best ones won’t always be the most expensive. Every household’s tap water is different, so it’s challenging to pinpoint the best countertop water filter on the market.

Find one that fits your family’s needs but is still within your budget. The right one should last you for several years or longer, so it’s a worthwhile investment to make. 

Filtration Capacity

All the countertop water filters we reviewed can remove bad tastes, foul odors, some heavy metals, and sediment from your drinking water. However, not all of them will be equally efficient at removing those substances. 

Some models will remove chloramine while others won’t. Some will be more efficient at removing chlorine. Still, others can remove a wide variety of contaminants, but they also may strip minerals from your water. 

To make sure you pick the filter with the most optimal filtration capacity, you should test your drinking water before making your purchase. 

A simple water test kit (which only costs around $15) can tell you your water’s pH, heavy metal concentration, hardness, and other metrics. 

Once you discover what contaminants are most present in your water, you can start looking for a countertop water filter that provides the best filtration to meet your needs. 


Once you get a countertop water filter, you may notice a change in how your drinking water tastes. 

You and your family may be so used to drinking chlorinated water that de-chlorinated water may come as a surprise. Though there will be an adjustment period when it comes to the taste, the higher-quality water will be better for your health in the long run.

Some filters will remove certain minerals from your water. This process can also affect the taste and texture of your water if you’re used to high amounts of magnesium and calcium. Depending on how efficient your filter is, it may remove most of the magnesium and calcium of your water.

If you want to keep these minerals in your water to preserve its taste, try looking for a filter that re-mineralizes your drinking water. Re-mineralization keeps healthy minerals in your water and can prevent your water’s taste from changing drastically. 

If you want to add some flavor to your water, you may consider choosing a pitcher over a faucet filter. You can add freshly cut cucumbers or lemon slices to your pitcher and enjoy cup after cup of infused water. This idea is a tasty way to encourage your family to drink more water and ditch the extra calories in soda and other sugary drinks. 


As easy as installing a countertop water filter is, the maintenance may require more effort on your part. 

Your filter will reach its maximum capacity at some point and need replacing. 

The time you go in between filter changes will depend on a variety of factors like the filter size, how often you use it, and how many people regularly use it. 

Some products have four different filters with separate cartridges that all need replacing. Make sure this is something you’re willing to take on if the model you’re looking at uses more than one filter. 

A device’s maximum filter capacity rarely correlates with its price. More expensive models may require a filter change every four months, while cheaper ones may only need a filter change every 8 to 12 months. 

Learn how much a filter change will cost you and how often you need to change it before deciding on a countertop water filter. 

Ease of Use

Who’s going to be using your countertop water filter? If it’s just you and a spouse, you can get by with a pitcher. Most pitchers have capacities of two to five gallons. While this may sound like a lot, the water will go quickly in a busy office or household. As long as you don’t mind filling it up occasionally, a pitcher should fit your needs. 

If you have elderly household members or children, a faucet filter might be the way to go. With a faucet filter, they can access clean drinking water without needing to refill a container.


With all the countertop units available, there are a lot of different design choices. Some have a plastic construction, while others have a stainless steel finish. If you want your unit to match the appliances and fixtures in your kitchen, consider how it looks before you purchase one. 


Do you still have some questions about countertop water filters? Read on for further clarification:

Will a countertop unit remove chlorine?

Yes. Any carbon or multi-staged countertop unit will remove most chlorine from your tap water. 

Do I need a lot of countertop space to purchase a unit?

No. Most modern countertop units are compact. They will fit into the space around your sink or kitchen island without taking up much room. 

What are the signs that I need to replace my cartridges?

Some consumers are under the misconception that they can look for sure signs to know when their cartridges need replacing.

It may seem logical that factors like flow rate and taste can indicate an old cartridge. However, you should not rely on these signs to keep track of when you need to switch out your cartridges.

Some carbon cartridges will produce pleasant-tasting water long after they have stopped working correctly.

Instead of looking for some signs, follow the manufacturer’s instructions to know how often to change your cartridges. 

Which is better: filtered tap water or bottled water?

The answer will vary depending on whom you ask. When it comes to the financial side of things, filtered tap water is much more economical. All it requires is an initial investment in a high-quality filter. 

Bottled water can cost you hundreds of dollars every year. Business Insider reported that buying plastic bottles will make you pay around 300 times more on average than if you use your tap. 

There also may be no difference in quality between bottled water and unfiltered tap water. When you purchase bottled water, you may very likely be paying for its municipal counterpart. 

According to EcoWatchmore than half of bottled water in the U.S. originates from municipal sources. So, you’re overpaying for a case of bottles with the same water that comes out of your faucet. 

When it comes to quality, filtered tap water is arguably healthier. With a countertop unit, you can be more confident about the removal of specific chemicals and toxins. Plus, you can limit your exposure to phthalates, BPA, and other plastics that are present in some plastic bottles. 

As long as you maintain your countertop unit by performing cartridge replacements when needed, it should always perform at its prime. 

We highly recommend testing your water occasionally to ensure your countertop cartridge is doing its job correctly. 

Can I connect my filtration device to more than one faucet?

No. Countertop units can only connect to one faucet at a time. However, they are easy to disconnect and re-install to a different faucet. 

Can bacteria grow in my cartridges?

Yes. Your cartridges will improve the quality of the water that’s running out of the faucet. However, bacteria can grow on the faucet itself. 

You can take a couple of measures to avoid this issue. First, allow your faucet to run for 20 to 30 seconds before turning on your countertop unit. Then, with the filter on, let the water run for an additional 5 to 10 seconds.

These steps should wash out any bacteria that has accumulated within your unit. 


After reading through our countertop water filter reviews, you can see that there is no universal best product available. Instead, you should shop for the one that will fit your family’s needs, preferences, and budget. 

Each model is suited for different uses. Some do a great job of removing chlorine but won’t remove fluoride as efficiently. Others will be ideal for removing heavy metals or pharmaceuticals from your drinking water. 

To find the best countertop water filter for your home, start by testing the quality of your water. Determine what contaminants it has. From there, you can start looking for a product that will remove these contaminants and align with other preferences like size, material, and filter life. 

Check out the video below to learn more about how filters work and click here to check out our other interesting facts about water.

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