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Water is a basic need. You are never 100% sure that the water coming from the tap is clean and safe. The water that flows through your plumbing is most likely to contain other foreign substances that may end up being a threat to the health of you and your family.

It is not certain whether the source of your tap water is sanitary which is why having a countertop water filter is a wise technique to ensure that the water you drink or add to your cooking, even though it comes directly from the tap, is clean and safe.

Having this in your kitchen can rid your water of possible contaminants and harmful substances and reduce the risk of catching diseases that are acquired from dirty water. Furthermore, countertop water filters can also alter the pH of your tap water, providing your body with essential ions. 

There are already a lot of water filters in the market to choose from. If you do not have at least some basic knowledge about the product, you may not be able to make the most out of your purchase. You need to make sure that the unit you bring home fulfills your household needs.

In this post, we will be laying down all essential information that you need in order to make the right decisions. 

7 Best brands of countertop water filters

1. Home Master TMJRF2 Jr F2 Countertop Water Filter

Home Master TMJRF2 Jr F2 Counter Top Water Filtration System, White
  • Highly pure water - three-stage filter removes up to 93 percent of fluoride, chlorine, and other chemicals
  • Efficient, space-saving design - compact design takes up minimal space and easily fits on any sinktop
  • Simple and easy installation takes only minutes
  • Portable - compact unit travels well

This brand is at the top of the list of best quality countertop water filters available in the market. It can provide you with good drinking water that is free from possibly harmful contaminants that could affect your health. It filters out more than 90% of chlorine, fluoride, and other elements in the water. 

It is fairly easy to handle and its petite size makes it a good choice for those with limited kitchen counter space. Installation is also quite easy to do and it’s not bad to look at either. It can be a portable filter that you can relocate without hassle. You get the best value for your cash with this unit. 

  • Maximum water purity – triple-stage filtration process ensures up to 93% removal of chlorine, fluorine, and other contaminants
  • Compact with high quality performance, perfect for small-spaced counters


  • Compact design makes it portable
  • Easy handling and installation
  • Up to 93% removal of contaminants


  • Filter is not always readily available in the market
  • Requires extra care

2. Aquasana Countertop Drinking Water Filter System

Aquasana AQ-4000W Countertop Drinking Water Filter System, White
  • Removes over 97% of chlorine and reduces 76 other contaminants - NSF certified to remove lead, pharmaceuticals and more
  • No waste water or harmful contaminants added to your drinking water during the filtration process
  • Retains the healthy minerals like calcium, potassium, and magnesium for the healthiest water
  • Only 11 cents per gallon - 11 times the capacity of the leading gravity-based filter pitcher
  • Easily attaches - no permanent fixtures or installation required. Filtered water right from your tap

Aquasana has been in the business for several years already and it has always satisfied customers. This particular product is a testament to their exceptional work. The Aquasana Countertop Drinking Water Filter System guarantees up to 97% purification and cleansing of your tap water to make it suitable for drinking. The system can strip the water supply of unwanted chemicals like lead, chlorine, and others which can affect not just the smell and taste but the effect of contaminated water to the body. 

Another thing to love about this product is that it does not rob the water of the good stuff. You can still have the electrolytes of good drinking water like magnesium, potassium, and calcium which are beneficial to the health. The filter system is good for travel purposes as well. 

  • 97% optimal removal of chlorine plus reduction of levels of 76 other foreign matter, certified by NSF to be effective in eliminating lead content and other chemical additives
  • Does not add any other content to your water



  • Slow speed

3. Royal Berkey Water Filter 3 Gallon System Bundle

Want a water filtration system that purifies your water, cleanses it of foreign contaminating agents all without changing its taste? The search is over because Royal Berkey has got you covered with their 3 Gallon System Bundle. From the product name itself, the unit is capable of filtering and storing up to 3000 gallons of water. Regardless of how long the water is stored, the taste and overall quality of the water does not change. The sturdy stainless steel container ensures that your water is protected from external contaminants. 

The Royal Berkey’s heavy duty filtration system eliminates traces of bacteria, pesticides, germicides, disinfecting agents, nitrates, and other chemicals that may be present in the water source whilst retaining the minerals essential in drinking water. 


  • Taste of your water does not change
  • Nitrates are also removed
  • Can filter and hold 3000 gallons of water


  • Unclear instructions for the installation 

4. CleanWater4Less Countertop Water Filtration System

cleanwater4less Countertop Water Filtration System - No Plumbing Water Filter - Faucet Adapter
  • No Replacement Filters! Saves Money! Easy to install and comes with instructions and pre-filter included!
  • Granulated Activated Carbon - 97% Chlorine reduction, effectively filters sediment, volatile organic compounds (VOCs), taste and odor from water.
  • Stylish diverter valve attaches right to most standard faucets, NO TOOLS NECESSARY!
  • 10,000 Gallons of Fresh Water! No more lugging cases or bottles of water!

This model is among the top of the most widely renowned filtration systems in the market today because of its efficiency at a reasonable price. Consumers prefer products that have a lot to offer at an affordable rate and this particular product fits that criteria. 

Its state-of-the-art filtration capacity can accommodate almost 10,000 gallons of water in its life span. Even with this huge capacity, it does not compromise its efficiency in getting rid of the undesirable substances in your water supply. You can be assured of a consistent flow of safe and clean drinking water in your home. 

  • Filters last for a very long time, no need for constant replacement. Easy installation with instruction manual.
  • Uses granulated activated carbon – up to 97% guaranteed chlorine removal, filters large sediment particles, and volatile organic substances that affect taste and odor


  • 10,000-gallon capacity
  • Kills harmful bacteria
  • Includes easy to follow instruction manual


  • No indicator if filter has reached capacity

5. Santevia Countertop Water Filtration System

Santevia Gravity Water System - Countertop Model - Alkaline and Fluoride Filter | At Home Water Filter that Makes Water Alkaline and Adds Minerals | Chlorine and Fluoride Filter
  • 10 L / 2.6 GAL MINERALIZED WATER FILTER: Create cleaner, pure tasting water with our BPA-Free, Gravity Water System. Santevia filters first reduce impurities from water and then add back healthy essential minerals to create pure and mineralized water.
  • REDUCES LEAD AND FLUORIDE: The Santevia Gravity Water System reduces hazardous chemicals found in tap water like chlorine, pharmaceuticals, and fluoride as well as heavy metals like lead.
  • MINERALS IN EVERY GLASS: Santevia water filters add essential minerals like calcium, magnesium and potassium to create water that’s healthier for you. Support your optimal health and love your body from the inside out with clean and mineralized water.
  • THE ALKALINE DIFFERENCE: Santevia water filters raise the pH of your water by up to +2.0 units creating a smooth and silky taste. By increasing the alkalinity (resistance to acid) of your water you support your body's ability to fight unhealthy acidity.
  • OPTIMIZED FOR TASTE: Adding healthy minerals to water is better for your health and will also makes your water taste fresh and delicious. Santevia filtered water tastes so good that you’ll drink more of it and stay better hydrated.

Relying on pre packaged bottled drinking water is a hassle and not to mention damaging to the environment. This filtration system by Santevia is one of the great systems with filter efficiency and longevity that will last for around a year before it needs replacement. Although it may be a heavy investment at first but the long-term benefits that you will reap will definitely make it worth the money. The water is subjected to 8 stages of water filtration processes so it is without a doubt very effective. 


  • Does not electricity to operate
  • Customer service is great
  • Guaranteed safe and purified clean drinking water
  • 8 stages of water filtration


  • Difficult to change filters

6. APEX EXPRT MR-2050 Quality Dual Countertop Water Filter

APEX EXPRT MR-2050 Dual Countertop Drinking Water Filter - 5 Carbon Block and 5 Stage Mineral Cartridge - Alkaline Filtration System - for Purified Water (Black)
  • REDUCES HARMFUL CONTAMINANTS IN TAP WATER: Removes 99% of substances commonly found in sink tap water like chlorine which contribute to bad odors in your water, chloramine, benzene, radon, and heavy metals. This filter will also add Magnesium, Potassium and Calcium raising the alkalinity of your water. NOTE: ALKALINE WATER WILL RAISES TDS LEVELS DUE TO THE MINERALS ADDED IN WATER.
  • CONNECTS TO DOMESTIC FAUCET MODELS: APEX countertop filters have been designed to conveniently sit right on the kitchen counter top next to sinks. It is simple to install, and connects easily to most standard household kitchen faucets. All the necessary hardware is included for easy do-it-yourself installation. NOTE: PLEASE MAKE SURE ONE OF THE ADAPTERS WILL FIT YOUR FAUCET OR ELSE THE UNIT WILL BE NON-FUNCTIONAL.
  • COST-EFFECTIVE WATER FILTER: By using an APEX counter top alkaline water filter, you can stop wasting money on small disposable bottles of water that just get thrown away when empty. Buying bottled water for daily home consumption gets expensive and tedious. You don’t have to lug heavy water jugs or cases to your house to enjoy fresh clean drinking water. APEX water filters are the solution.
  • ENVIRONMENTALLY RESPONSIBLE: Owning a good bottleless water dispenser device can not only save you money, but it is the responsible choice for helping to eliminate the millions of plastic water bottles piling up in landfills each year. We only have one world, but it is quickly being polluted by unnecessary water bottles that can be reduced by having your own cleaner filtered smart water source at home.
  • PURCHASE WITH CONFIDENCE: Strictly designed to be used with municipal water (not recommended for well water or water that is not pre-treated) Includes 30-day money-back and limited one-year manufacturer's warranty against defects in materials and workmanship.

This model alkalinizes your water as well as removes chlorine, arsenic, lead, and asbestos content. In addition to that, it also disinfects your drinking water from potentially harmful microorganisms that cause diseases that are usually acquired from contaminated water such as giardia and cryptosporidium bacteria. The unit is pretty easy to set up and you can do it on your own. 

It has five stages of water filtration process at dual set-up. It is designed to fit easily with conventional faucet types which is why the installation is not much of a hassle. The APEX EXPRT MR-2050 Dual Filter also has a 30-day money back guarantee for their consumers in the event that they are not satisfied with the product along with a 1-year service warranty  for parts and performance defects. 


  • Easy installation 
  • Disinfects and purifies your water from chemicals and bacteria
  • 1-year warranty
  • Compatible with most regular faucets


  • Only good for those who want an alkaline model

7. Express Water Reverse Osmosis Water System

Express Water RO5DX Reverse Osmosis Filtration NSF Certified 5 Stage RO System with Faucet and Tank – Under Sink Water Plus 4 Filters – 50 GPD, 14 x 15 x 5, White
  • Reverse Osmosis Water Filter: Experience what water should taste like with the Express Water reverse osmosis water filtration system reducing up to 99.99% of Lead, Chlorine, Fluoride, Nitrates, Calcium, Arsenic, and more.
  • Water Purification System: Drink the healthiest water on Earth. All our water filters are specially engineered to work together, producing the safest and best tasting water you’ll ever drink
  • Under Sink Water Filter: Don’t waste money on professional installation. Express Water’s quick and easy-to-understand design means you can install and understand everything about your new water filtration system
  • Under Sink Water Filter System: No need to mess with refilling or activating your water filter, Express Water’s water filtration systems automatically fill your water tank with high quality drinking water
  • Leak Detection: Each under sink water filter includes an emergency leak stop detector that shuts off water flow when it detects unwelcomed moisture

The last one of the list but definitely not the least, is the Express Water Reverse Osmosis Water System. What’s the edge of this model? Unlike the typical 5-8 stages of filtration process, this has 10 filtration stages for the water to go through. There is no reason why you should still be hesitant of its output.

Every stage filters a different kind of contaminant, ensuring that the water that flows from it is at its maximum purity and safety. It uses a form of reverse osmosis so there is not much waste in water at a fairly affordable price. 

Changing filters won’t be a problem and it removes around 92% of undesirable water content like bacteria, extraneous debris, and toxins. It is without a doubt, one of the most competitive models in the market today. 


  • Simple and easy changing of filters
  • Reverse osmosis preserves water supply
  • Clear instructions
  • 10 stages of water filtration process


  • Installing the water filters might take some time

Introducing the countertop water filter

From the name itself, this water filtration system does its job from the top of your kitchen counter by your sink. If you want to ensure that you have a steady supply of clean, drinking water, straight from the tap, you will want to invest in a countertop water filter.

We are not entirely assured of the safety of the water that comes out of our faucets. There is no guarantee that our main water source is not contaminated with a lot of possible foreign matter. With the help of this device, your tap water is stripped of a lot of potentially harmful substances. You can be confident that the water you drink is safe even though it comes from the tap. This also eliminates the need for you to buy bottled water from the store. 

Aside from their convenient size, they are also portable and works well with almost any water source. It works for both indoor and outdoor use and can be brought anywhere without hassle. 

Your Guide to your first Countertop Water Filter Purchase

There is already a wide variety of these products out in the market today. It is easy to get confused about what to buy. You might have a hard time deciding which one to get because they all seem to serve the same purpose. Well, worry no more because we will be giving you a simple guide so you can be informed about the things you need to consider when buying your first countertop water filter. 


Water filter pitcher and faucet filters are the two available types of countertop water filters in the market. This is what you should figure out first before any other details. The difference between the two is given in their names. You can either go for the pitcher to store water or the one that is attached to the faucet. Either way, both types are great for household use. 

  1. Water Filter Pitcher

This kind of pitcher is the simplest and cheapest there is. It looks like a regular water jug but it has a built-in filter that cleanses the water, removing extraneous matter and contaminants so that the water that comes out from the jug is guaranteed safe and pure. The filtration process takes around 5-15 minutes which varies mainly upon the capacity and condition of the filters and also the quality of the water. If the water has too many foreign matter present, then it would take a longer filtration process.

  1. Faucet filters

These are typically placed by the kitchen sink and a plastic hose connects the filter to the faucet. You can easily do the installation yourself and most of the units are already pre-assembled. All you have to do is connect it to your faucet. 

  1. Carbon Filter

More commonly known as activated charcoal filter or coconut carbon filter, this kind of filter is one of the natural means that is being used usually in the last two filter types that we mentioned. It works best in removing chlorine content that can change the taste and odor of the water. 

  1. Ceramic filter

 Just like the activated carbon, ceramic filters are made up of many small pores on a cartridge. These pores strain large particles in the water along with bacterial contaminants. The ceramic media catches foreign substances as the water flows through the porous surface. The interior of that filter consists of sharp angles that maximize filtration to ensure that the water output is thoroughly cleaned. 

  1. Ultrafiltration

This is filtration on a higher level. Basically, the water undergoes an intensive filtration through a semipermeable membrane that rids your water of a lot of contaminants and extraneous matter better than the conventional filters which is why it costs more. 

  1. Water Distillers

This uses a distillation process where the water goes through a cycle of evaporation and condensation and the resulting water output is free from foreign contaminants and other substances. Distillation is known to remove elements such as arsenic, lead, and fluoride and even offer some minor disinfection from bacteria and viruses. 

  1. Reverse Osmosis Water Filters

This type of filter is typically placed underneath the sink but the pricey countertop filters have them sometimes. Reverse osmosis is one of the most effective water processing technique and has the power to cleanse the water of almost all dissolved solids and foreign matter. Like ultrafiltration, water is pushed through membrane and selectively removes and retains essential content. 

Filtration capacity

The next thing you should consider is the capacity of the filter. Keep in mind that the device is intended to cleanse your water from chemicals, bacteria, extraneous matter, and other unwanted dissolved content that could affect its taste, odor, and even its effect on the body. This aspect of the filtration system is not the same for all models. There are some that vary with the amount of time they take to complete the filtration process or the kinds of substances that they can filter. There are also intensive filters that can strip the essential minerals and electrolytes from the water.

So for you to know what you want, you must first determine the substances that contaminate your water supply so you know what you want gone. You can do this by testing the water that you have at home with test kits which you can buy in the market. These kits can provide information about water hardness, pH level, and heavy metal content, to name a few. From that information, you will know what filtration capacity you need. 


This factor mainly depends on the size of your kitchen countertop. You have to estimate that the device is just the right size for your counter. You do not want this to take up too much space especially if you have other appliances on your kitchen counter. Depending on the type of filter you buy, you have to find a good spot to place it especially for faucet type filters. These are typically small and can fit almost anywhere but you have to allot a space for it near your sink. The same goes for pitcher filters as well. 

Alkaline Water

Alkaline water has many health benefits. It can slow down your body’s aging process, improves digestion, regulates your body pH, and gives the body more energy, among others. Fortunately, there are water filters in the market today that have the capability to increase the pH of your water supply to make it more alkaline. It usually comes in the form of a special cartridge. If you want or need alkaline water, then you can go for the models that are designed for that purpose.


When it comes to the financial aspect, we all have limitations. You have to decide on the price range that is within your financial capability. Do not believe in the misconception that the price is directly proportional to the quality. There are well-performing models out there in the market today with reasonable prices. It all boils down to your needs because you can easily find a unit out there that can fulfill what you need.

There are water filter models that are specially built to perform specific filtration processes. Others can filter out organic chemicals and substances while others can remove heavy metals. There are also units that can disinfect the water and get rid of microorganisms. The bottomline is that you have to find that one model that solves your problem. 


A very common complaint about water filters is that it changes the taste of the water. People most commonly consume chlorinated water so that is the taste that a lot of people have gotten used to. It might be a little difficult for you to adjust your taste buds to the taste of unchlorinated water. 

In addition to that, some filters strip the water of the essential minerals that are actually beneficial to the health like calcium and magnesium elements, which are usually contained in hard water. This gives the water a distinctive taste. Back before water filters were used, people always drank hard water. 

If you use a filter that removes the calcium and magnesium content, you should expect a change in the taste of the water. However, if you still want to retain those minerals in your water because you do not want to deal with adjusting to the change in taste, there are filters available in the market that refuel your water with those minerals so the taste stays the same and also gives you the same benefits. 


Like all other machines, water filters also need to be maintained every once in a while. No matter what the price is, you still need to allocate time and expense to keep it functioning smoothly. Depending on the model, filters need to be replaced at regular intervals when they have reached their maximum capacity. It is mandatory that you replace it when needed because it won’t be able to properly perform its function if you use it beyond its capacity. The lifespan of filters can range from 4 to 12 months depending on the model. 

Once again, price does not equate to quality or lifespan. You’ll be surprised to find that there are cheap filtration systems that last a lot longer than pricier ones. Also, there are heavy duty systems that have multiple filters and so when they reach their maximum capacity, you have to change all the filters at once so you also have to consider whether you can afford that kind of maintenance. 


Faucet water filters are generally more convenient to use than water filter pitchers since they are just placed near your sink and faucet, switched on, and then they’re good to go. For the pitcher filters, you have to keep it regularly filled with water so that it can perform its function well. 

Though it may not be that big of an issue because there are some pitchers that can hold up to 5 gallons of water, in the event that you forget to monitor the water levels, you run out of supply so you have to refill and wait for it to finish the filtration process before you can have drinking water available. On the plus side, you can put in fruits or vegetables to make instant infused water especially for those who are very conscious of their health. 


You can make sure that a brand or model is reliable and of good quality when it has certifications from authorities like the WQA (Water Quality Association) or NSF (National Science Foundation). These organizations only issue those certifications after thorough testing of the devices. They have very high standards so you can be confident that the models that passed their tests are of high quality. 

Water Testing

Like we’ve mentioned before, it is wise to have your water tested for contaminants before you decide on the kind of water filtration system you need. If you have an idea of the content of your water supply then you can make an informed decision about the specifications that you require in a water filtration system. 

Maintenance and Cleaning

Countertop filters do not need to be cleaned frequently. The only maintenance you need to do is to replace the filters and make sure that there is a constant flow of water. It is very rare to find recyclable filters nowadays but if you do, make sure you research them first. 

Advantages and disadvantages of countertop water filters

Just like every decision in life, there will always be pros and cons. Let us give you the rundown on the good and bad sides of having countertop water filters. This will allow you to weigh your options rationally. Read along to be guided.


  • Cheap

Countertop water filters are generally quite inexpensive. They’re affordable and have a wide price range. Whatever your budget is, there is always something for you. It’s safe to say that this might be the cheapest form of filtration system available in the market today that offers a lot for its price. 

  • Easy to install

It does not take a lot of effort to install a countertop water filter. As mentioned above, there are two general types of countertop filters: faucet and pitcher. The former just needs to be attached to the faucet and the latter just needs assembly and then you can fill it with the water from your tap. Double check to ensure the correct placement of the filter cartridges and then you’re good to go. 

  • Space Saver

Another great thing about countertop water filters is their small size. They do not take up much space compared to other heavy-duty filters. They are not the smallest kind of filtration system but for their performance, their size is already justifiable and convenient for their function. You do not have to worry about running out of counter space because these devices are very compact and petite. 

  • Low maintenance

As mentioned before, countertop water filters do not need to be regularly maintained and cleaned. All you have to look out for is when the filter reaches its maximum capacity which by then you will have to replace it. Not to worry though because it’s going to be a long time before that happens. Other countertop filters have indicators that tell you when it’s time to change the filter cartridges.

  • Efficiency

Small but terrible. This is a perfect way to describe these devices. Albeit their small size, their capabilities exceed expectations. They can remove a lot of contaminants from organic chemicals to mineral deposits to microorganisms. You can be confident that these filters have the power to eliminate a lot of unwanted content from your drinking water that may affect the taste and odor, rendering it unpleasant for drinking. 

  • Preparation and Set-up

It’s easy to prepare the filter cartridges before giving it a go. This process is called “priming” where the user has some procedures to follow to prepare the system for the filtration. This is generally included in the instruction manual provided by the manufacturer that came with the package. Sometimes there is a video tutorial to guide the user on how to perform the priming. 

  • Remineralizes your water

There are countertop water filters that fill your water with essential minerals after filtration. Most of the time, the filtering process is so thorough that even the good minerals are eliminated from your water. These minerals can have positive effects on health. Luckily, some filters fuel your water with those minerals so you can still enjoy the benefits together with your drinking water. 

  • Eco-friendly

Plastic bottles amount to around 14% of the world’s total garbage problem. People buy bottled drinking water most of the time because it’s cheap and easily available but it comes at a price of destroying the planet by adding up to the pile of garbage that contaminates our lands and oceans. With water filters, we can have drinking water straight from our tap and reduce our usage of plastic bottles. 

  • Portable

Countertop filters need to be placed at a spot near your kitchen sink because they must be connected to the faucet. However, their size and versatility makes them compatible with a lot of water sources so they can be carried even during travels and used in mobile homes as long as there is a water supply. 


The advantages sure sound promising. But there are also some minor downsides to owning a countertop water filter. Allow us to enumerate a few:

  • Aesthetic 

If you are a minimalist and you do not like having a cluttered countertop, then having this device will really pose a challenge for you. 

  • 100% efficiency not guaranteed

When we talk about removal of water contaminants, this device does a pretty good job at it. But there are also other alternatives in the market that can carry on more functions.

  • Limited to one spot only

Countertop filters only work with one water source at a time. One faucet per device. There are other filter options available that can connect to several faucets.

  • Slow Filtration Rate

Their size also comes at a disadvantage when it comes to filtration speed. It takes some time for countertop filters to finish filtering the water supply compared to other filtering solutions in the market today. If you are impatient, then this may not work for you. 

  • Always on display

In relation to the aesthetics, if you are trying to maintain a certain minimalist, clutter-free look for your kitchen countertop, then this kind of water filter will be a hassle for you because it needs to be by your kitchen sink at all times. You may need to resort to pricier models if that is a big deal for you. 

  • Convenience

Water filter pitchers are quite heavy to carry especially when they are fully filled. They also need to be refilled every now and then and it will take some time to filter the newly-filled water so you will need to wait for a while. 

Do you need a countertop water file?

You might still be having second thoughts about whether or not you really need one. Check the list below if you fit one of the criteria.

  • Looking to transition from faucet filter to water pitcher
  • Residing in an area where the water source is city water
  • In search of budget-friendly water filtering solutions
  • Renting a place where heavy installation is not allowed

The fact that this type of water filtration system does not need heavy installation that involves you tapping into the main water pipeline or altering your plumbing system is the primary reason why we recommend it to those people who fit the criteria above. However, its size also means limited filtration features that may not be as effective for a heavily contaminated water supply. 

Step-by-step guide to the installation of your countertop water filter

There is no need to seek the help of a technician or an expert when installing your countertop water filter. You can easily do it yourself with the right amount of determination and an adjustable wrench. But there are some units that already come with a free plastic wrench in the package. To successfully set up your filter, all you need to do is follow the procedure below:

  1. Position the unit beside the faucet in such a way that there is a safe and sufficient distance between it and the unit itself. Also make sure that there is no form of blockage whatsoever for the line that connects the faucet and unit. 
  2. Detach the aerator from the faucet
  3. Take a look if your faucet has an outside or inside thread. It’s much simpler for an outside thread because you will only need to connect the filter immediately. However, in the case of an inside thread, you will need an adaptor to attach to your faucet and screw the filter in. 
  4. Finally, attach the diverter valve to your faucet. You should be good to go after this. 

The different filtration methods

We are thankful that these types of devices were invented to make complicated processes simpler and easier. There is always a science behind the magic of these machines. The filtration methods that systems use vary from model to model. Here are some of the mechanisms that countertop water filters use to clean your water:

  • Mechanical Filtration

The most basic kind of filtration there is. Water passes through a filter with pore sizes that range from 0.1 to 0.3 microns, capable of stripping the water of solid sediments and particles along with some bacteria and other microorganisms.

  • Water Softening

At this stage, the hard mineral deposits are being removed from the water supply. Toxins and heavy metals are also eliminated. This is possible with the help of ion exchange resins that mainly target calcium and magnesium ions to soften the water being filtered.

  • Activated Carbon Filtration

A lot of experts consider this part to be the most vital of all. Activated carbon is known for its extraordinary power to capture toxins and contaminants of many kinds. It can cleanse your water from organic substances, additives, disinfectants, and etc. 

  • Alkalinization (Optional)

This is an option that you can either go for or not. Basically, this is achieved by exposing the water supply to infrared rays to reduce the acidic ions and have more basic or alkaline ions remain. 

  • KDF Filtration (Optional)

Kinetic degradation fluxion (KDF) is a filtration medium that neutralizes metallic and non-metallic elements such as lead, mercury, chlorine, and iron that might be present in the water supply. Hydrogen sulfide is also removed using this method. 

  • Silver Filter (Optional)

During this stage, further removal of toxins, heavy metals, and pathogens is done. 

  • Remineralization (Optional)

Other filter systems offer this feature where calcium and magnesium ions are reintroduced into the cleansed and purified water to preserve the benefits that these electrolytes provide in drinking water. 

Comparing countertop water filters to water softeners

There is a distinct difference between countertop filters and water softeners. The latter’s sole purpose is to convert hard water to soft water by simply eliminating the hard minerals like calcium and magnesium. There is a high chance that other contaminants may still be present in your water if it only undergoes water softening. Also, water softeners are generally installed to the main water pipeline that goes into your house. Using this device can lessen the build-up of lime scale residue in your appliances and on your appliances, bathtubs, sinks, and other tile surfaces. 

Water softeners do not provide drinking water. It only produces soft water from your main water source. If you want to enjoy the benefits of both a water softener and a countertop water filter, you may want to explore other pricier options that are capable of performing both functions. 

Comparing countertop water filters and under sink water silters

From the name of the latter, you already know where that kind of water filter is installed. Depending on the model, the under sink filter can have its own special faucet where the filtered water comes out or it can also make use of the preexisting faucet that you have. 

The slight difference between the two is that under sink filters tend to filter faster than countertops. 

With the aid of reverse osmosis, removing contaminants is more efficient. This kind of unit is also more preferred by people who do not want extra clutter on their kitchen counter so it does not take up space and is not visible. 

The downside? Installation is a hassle and you might need to hire a plumber to have it installed properly. 

Comparing countertop water dilters and whole house water filters

Whole house water filters are installed at the main line closest to the area where it enters your house. Because it does its job at the primary source of your house’s water supply, it benefits the entire house. So for every faucet, every appliance that uses water, showers, toilets, and any other appliance or household feature that utilizes water, you can be sure that it went through filtration. That is the biggest advantage and the edge that whole house water filters hold over the rest.

Due to their heavy duty function, they can also provide soft water. They are able to eliminate small to large contaminants from your water supply so rest assured that everyone in your home will be enjoying clean water at every part of the house. 

Comparing countertop water filters from water pitchers

Water filter pitchers basically work the same way except that they are equipped with built-in filtration systems. This is also a portable type of filter that does not need to be connected to any water source. It only needs to be constantly filled with water. Once you fill it with water, it will only take a few minutes for the water inside to be filtered thoroughly. 

If you are on a tight budget, this is a good choice. Unit price range can go from $30 to $80 at most. Replacement filters are only at $15-25. 

The good thing about this is that it does not have to remain in one spot. Like regular pitchers, it can be carried anywhere and even put inside the refrigerator. Just keep in mind that the water inside should not be stored for more than one day. It must be replaced and refilled. 

FAQs (Frequently Asked Questions)

Can countertop water filters remove chlorine content from the tap water supply?

Yes. Countertop filters can remove chlorine from your water. 

Which one between filtered water and bottled water is a better choice?

Countertop water filters are definitely the wiser, safer, and better choice compared to bottled water. Aside from the fact that bottled waters are damaging to the environment, they also cost more. 

If the taste of the water and flow rate changes, does that mean that the filters need replacement?

Not necessarily. The taste of the water and the flow rate do not indicate the capacity of the filters. You have to check its capacity for yourself so you can determine whether or not it already needs replacement. 

Can I connect the filter to more than one faucet?

Unfortunately, countertop water filters are only limited to one faucet at a time. 

Can bacteria form in faucet water filters?

It is possible that bacteria can accumulate in the faucet and in other crevices if not regularly cleaned. It is best recommended to flush the water for at least 20 seconds before turning on the filter and getting water to drink. It is also advised to wait at least 5 to 10 seconds after turning on the water filter. 

Do I need a huge countertop space to set up the filter?

Countertop filters are generally small in size so you won’t need a really wide space for it. 

Are countertop water filters compatible with all types of kitchen faucets?

Most of the standard faucets work with countertop water filters. We suggest doing a bit of research first if your faucet type is compatible with the model you are thinking of buying. 

Are countertop water filters free from BPA?

Yes. That is the main reason why shifting from bottled to filtered water is a good choice. Most, if not all, water filters are BPA free and have undergone product testing by authorities. 

Do I still need to buy the replacement filters from the manufacturer of my unit?

Replacement filters are generally universal and have a one-size-fits-all characteristic. It’s usually the same for a lot of different models on the market. The manufacturer usually puts that kind of information on the product description about replacement filter compatibility. If that information is not available, feel free to contact the manufacturer to find out. 

Can I use a countertop water filter in my RV?

As long as you have enough space to set up the filter system, then you most definitely can. That is the beauty of the portability of this kind of system because it can easily be carried anywhere and installed anywhere provided there is space and a water supply. Plus, the installation is easy to do. 


It’s time to stop putting off making that decision that has been lingering in your mind for a while now. It is always a wise choice to invest in having a steady supply of clean and safe drinking water in your home. It feels good to know that the water you drink is free from harmful substances. So as a parting word, here is our final suggestion:

Express Water RO5DX Reverse Osmosis Filtration NSF Certified 5 Stage RO System with Faucet and Tank – Under Sink Water Plus 4 Filters – 50 GPD, 14 x 15 x 5, White
  • Reverse Osmosis Water Filter: Experience what water should taste like with the Express Water reverse osmosis water filtration system reducing up to 99.99% of Lead, Chlorine, Fluoride, Nitrates, Calcium, Arsenic, and more.
  • Water Purification System: Drink the healthiest water on Earth. All our water filters are specially engineered to work together, producing the safest and best tasting water you’ll ever drink
  • Under Sink Water Filter: Don’t waste money on professional installation. Express Water’s quick and easy-to-understand design means you can install and understand everything about your new water filtration system
  • Under Sink Water Filter System: No need to mess with refilling or activating your water filter, Express Water’s water filtration systems automatically fill your water tank with high quality drinking water
  • Leak Detection: Each under sink water filter includes an emergency leak stop detector that shuts off water flow when it detects unwelcomed moisture

Among all the products we listed in this post, we highly favor this one because of its extraordinary water-preserving feature and 10-stage filtration process that really ensures the safety and cleanliness of your drinking water.

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