Best Countertop Reverse Osmosis System for Pure Water

Ian Mutuli
Updated on
Ian Mutuli

Ian Mutuli

Founder and Managing Editor of Archute. He is also a graduate architect from The University of Nairobi, Kenya.
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Having clean drinking water has always been a necessity. However, it's become even more crucial to purify the water you and your family consume because of the current pollution rate. Thanks to the countertop reverse osmosis system, the process of water purification is much easier than ever.

There are many reverse osmosis system reviews, but we have taken the liberty to bring you the best countertop reverse osmosis systems you can find. After doing the necessary research and counterchecking, we've curated a list for you and a buying guide to help you choose the best countertop unit for you.

Let's dive in.

Best Countertop Reverse Osmosis System 

1. APEC Water Systems RO-CTOP-C Portable Countertop Reverse Osmosis Water Filter System

APEC Water Systems RO-CTOP-C Portable Countertop...
  • Hooks up to most STANDARD FAUCET in minutes. Just plug and drink!...
  • Top rated brand, high performance reverse osmosis drinking water...
  • Highest grade 4-Stage ultra-pure system provides refreshing crisp...
  • Designed aluminum case for better looking, 90 GPD portable system...
  • Perfect for apartments, condos, motor homes, retirement homes,...

Starting off, our reverse osmosis system reviews list is a reverse osmosis water filter that is specially engineered to give you convenience, ease of use, and exceptional portability.

This compact and light RO-CTOP-C system hooks up to most of the existing standard faucets in mere seconds. And the best part? No installation is required. This makes this countertop RO system great for apartments, motor homes, student homes, condominiums, and even retirement homes.

This water filter gives you an unlimited amount of bottled water quality to enjoy at will. With a capacity of 90 gallons per day, it can fill any water storage container you have at a water pressure of 60 psi. The aluminum case it comes in makes this countertop reverse osmosis water system classy and stylish.

Buying bottled water can be expensive. This is why getting this countertop reverse osmosis system will save you both time and money without compromising the water's taste. This water filter is designed to remove contaminants, including toxic fluoride, chlorine, odor, taste, lead, chromium, and arsenic.

This reverse osmosis water filter works in four essential stages that pass through all US-made super high capacity filters that do a great job. The first stage uses a premium quick connect 5-micron sediment filter that removes rust, dust, and particles. The second stage has a premium quick-connect coconut shell-activated carbon filter.

This filter removes odors, chlorine, cloudiness, VOCs, and other common chemicals. The third stage uses a select FILMTEC high rejection TFC reverse osmosis membrane that removes up to 99% of dissolved solids and contaminants such as chromium, lead, fluoride, arsenic, and radium. Lastly, the fourth stage has a premium quick-connect coconut shell activated carbon filter that removes all possible residual tastes.

With this four-stage filtration process, you are sure that your water is safe for drinking for both you and your family.


  • Affordable.
  • Four-stage filtration system.
  • Works with any system with a water pressure of 40-80 psi.
  • Free lifetime support.
  • Components are NSF certified (BPA-Free).
  • Lightweight and compact for easy packing and transport.
  • Minimal installation: no plumbing installation or assembly.


  • The filter can waste a lot of water.
  • It can be slow depending on water pressure.

2. AquaTru - Countertop Water Filtration Purification System

AquaTru - Countertop Water Filtration Purification...
  • IS YOUR WATER SAFE TO DRINK? Studies continue to pour in...
  • IS YOUR WATER SAFE TO DRINK? Studies continue to pour in...
  • Tested and certified by IAPMO according to NSF/ANSI standards to...
  • NO PLUMBING OR INSTALLATION required - takes just minutes to set...
  • QUICK CHANGE TWIST AND SEAL FILTERS come included with your first...

AquaTru countertop reverse osmosis water filter is prevalent in many reverse osmosis system reviews because it is easy to use and comes with a removal tank. According to NSF/ANSI standards, this water filter is tested and certified by IAPMO according to NSF/ANSI standards to remove about 82 contaminants.

The level of purification that this countertop reverse osmosis water filter has is next level and cannot be compared to other leading pitcher filters. Toxins such as copper, chlorine, radium, fluoride, chromium, and lead don't stand a chance against this water filter.

Just like our first option above, you won't have to worry about any plumbing or installation processes. All you need is a few minutes to set up the reverse osmosis systems, and you're good to go. When you purchase your first Aqua osmosis water filter system, you get quick change twist and seal filters that will last you for up to 2 years.

Once you set up this best countertop reverse osmosis filter, you'll quickly say goodbye to bottled water and save yourself a significant amount of money.


  • Comes in a stylish design that can be used in the lobby.
  • Highly portable.
  • Easy to replace filters.
  • Smart digital filter change indicator.
  • The filtered water tank has a full sensor.
  • No installation or plumbing required.
  • 4 stage filtration system.


  • The system can be sensitive.

3. AlcaPure Reverse Osmosis Countertop Water Filter

AlcaPure Reverse Osmosis Countertop Water Filter by...
  • PUREST TASTING REVERSE OSMOSIS WATER: Zero Installation Purifier...
  • SPACE-SAVING DESIGN: The supply water tank is conveniently...
  • BPA FREE. Removes up to 99% of all contaminants: Including...
  • ZERO WATER WASTE: Easily accessible rejected water not suitable...

This countertop water filter by RKIN is a stylish countertop model that will light up any modern kitchen it is placed in. The patented filtration technology used in this countertop water filter will transform your ordinary water tap into purified, healthy, alkaline, fresh drinking water.

This water filtration system is also known as Zero Installation Purifier (ZIP) because you don't need to lift a finger for its assembly or installation. Our countertop water filter comes with all its filters pre-installed to make work easier for you.

All you need to do while setting up this water filtration system is filling the reservoir and plugging in the filtration system. Your water quality will be significantly improved no matter the water supply, for example, from your kitchen sink. This countertop filter also comes with a child-friendly and easy-to-use push-button that reduces spillage and waste water.

You'll be glad to know that all the internal components of this water filtration system are BPA-free to avoid any chemical contamination. The four-stage reverse osmosis water filtration process includes the following.

Stage one has the five-micron sediment filter. Stage two has the Activated Carbon filter. Stage three has the Reverse Osmosis Membrane, which is the heart of this reverse osmosis water filtration system. Finally, stage four has the Alkaline Post filter, which returns all beneficial minerals into the water to give you that crispy, rich, sweet taste of water. This last filter also increases your water's pH level to alkaline.


  • Uses less power.
  • Adds Calcium and Magnesium minerals for improves taste.
  • Has a ratio of 1:1 for filtered to wastewater.
  • Modern and stylish look.
  • Requires zero assembly or installation.
  • You can use the wastewater for gardening.
  • BPA-free.
  • Space efficient rectangular design.


  • Not budget-friendly.

4. KFLOW Reverse Osmosis Water Filter

KFLOW Reverse Osmosis System, Countertop RO Water...
  • 💧【TOP FILTRATION PERFORMANCE】: Adopting 4-stages filters,...
  • 💧【Intelligent Monitor & Zero Installation 】: The filter...
  • 💧【Economical and Multi-filtration Tech】: Compared to the...
  • 💧【CE Standard Certification】: Our water filter system is...
  • 💧【Special Note】: In the beginning, because of new filter...

Of all the reverse osmosis water filters we've covered today, this one will make any homeowner proud with its impression of an espresso maker. Drinking water will slowly become your favorite thing to do once you get yourself this water filter system.

This reverse osmosis filter adopts a multi-filtration recycling technology which differentiates it from the other conventional high consumption under sink reverse osmosis filter systems. To put it simply, the water that's left after filtration is not wastewater yet until it is recycled with the next batch of water.

This process saves water and increases water efficiency, saving water by a whopping 300%. Besides, this water filter uses a four-stage filtration system that includes a Carbon Block filter, Polypropylene filter, Reverse Osmosis Membrane filter, and a Coconut Carbon Block filter.

Some of the contaminants that this osmosis water filtration system removes include lead, fluoride, chlorine, mercury, and other harmful heavy metals. Of the countertop water filters we've discussed on this list, this one is one of the best as it is highly portable, water-saving, and efficient.

Its elegant and classy design makes it perfect for any room, including the kitchen, living room, lobby, and even bedroom.


  • More precise filtration performance.
  • The Recycling Multi-filtration Technology reuses wastewater.
  • Filters have a 2-year shelf life.
  • Has authoritative CE certification.
  • No installation required.
  • Elegant design.
  • Electronic filter change indicator.


  • The shutoff valve can only be opened by inserting the carafe.

5. Frizzlife Under Sink Water Filter System

Frizzlife Under Sink Water Filter System-High Capacity...
  • ✔FITS BOTH 1/2" AND 3/8" COLD WATER LINE: Super EASY...
  • ✔AUTO SHUT OFF DESIGN: Utilizing quick change twist-in...
  • ✔HIGH FLOW RATE & MULTI-USAGE: Enjoy tap water as pure and...
  • ✔MONEY SAVING & 100% SATISFACTION: The under counter water...

The Frizzlife MK99 water filtration systems include a two-stage high precise compound filter that removes 99.99% of all contaminants in tap water. However, it still leaves the essential minerals in your drinking water and eliminates the contaminants.

Some of these contaminants include lead, mercury, rust, carcinogens, chromium, volatile organic compounds, chlorine, orders, and bad tastes. Thanks to this ultra-pure system, you can now enjoy pure and healthy after straight from the tap.

The installation process is super easy, and this system comes with 3/8" direct connect hoses that fit the standard 3/8" feed-water valves under most US kitchen sinks. Within less than three minutes, you will have your countertop water filters running with no need for a plumber.

The auto-shut design ensures that you don't have to shut off the water supply each time you work on the filter cartridge replacement. You can happily use your tap water for drinking water, to wash fruits and veggies, to cook, and even to clean dishes without worrying about contaminants.


  • Super easy to install.
  • Auto shut-off design.
  • Fits both 1/2" and 3/8" cold water lines.
  • Water tastes great.
  • High flow rate.
  • Includes a two-stage high precise compound filter.


  • None

Factors to Consider When Buying A countertop Reverse Osmosis System

1. Size

We've looked at several fantastic countertop systems. Now, the critical part is knowing which one is suitable for your current available space. You don't want a large reverse-osmosis system that will clutter your place further.

Therefore, if you don't have enough space on your countertop, you can go with an under-counter reverse-osmosis system that will fit nicely under your sink. Before you make your order, measure the available space against your system's size so that you won't have to send it back.

2. Budget

Ask yourself how much you are willing to spend comfortably. This will give you a rough idea of what price range your reverse-osmosis filter will fall under. The standard price range is between $250-$500, such as the great options we've outlined for you above.

You'll find some more expensive options that boast more stages of filtration, an ability to filter larger quantities of water, and some cool extra features such as autoflash. Some can even add more nutrients back into your driving water.

If you have a large family or prefer the extra features that come with the high-end options, don't shy away from choosing them if your pocket can allow. Ensure that you don't choose a cheap reverse-osmosis filter made of cheap materials that will leave you having to replace it in no time.

3. Effectiveness

We've mentioned above how many stages each system has. Therefore, choosing a product with at least four stages will have you drinking water that is pure and has a great taste. However, note that the choice in the number of stages you want your filter to have depends on the state of tap water you're starting with.

If you feel like you need a system with more than four stages, you can invest in a system with five or even six filters.

4. Amount of Water

We've mentioned above that one of the perks of having a high-end filter is that you get to filter large quantities of water at a go. Several reverse osmosis water filters indicate how many gallons a day they can handle. Therefore, as you are checking for the system you want, ensure that you consider the capacity.

Nonetheless, most standard sizes range between 50-100 gallons. A 50-gallon system should be enough for a relatively small household.

5. Waste Water

The one downside to countertop RO systems and other reverse osmosis filters is that they create a lot of wastewater. However, some recover 5-15% of the water they filter. If you don't like seeing water go to waste, investing in a reverse-osmosis system that reduces water waste through repurposing is a good idea.

These zero-waste systems repurpose the wastewater to dishwashing and laundry, among others. However, note that the wastewater contains more contaminants and chemicals.

6. Lifespan

We understand that you want value for your money, and that's why we curated a list of brands known for their high-quality products. The last thing you want is to choose a product that will serve you for a few months then break down.

The best part is that many reverse-osmosis systems come with warranties. In some cases, you'll find that they come with limited lifetime warranties. If you want to be sure that the product is rock-solid, you can opt for filtration systems that offer a solid warranty.


We hope that you've found this reverse osmosis filtration review helpful, and you can now make an informed decision on which portable reverse osmosis system you want. 

Ian Mutuli

About the author

Ian Mutuli

Founder and Managing Editor of Archute. He is also a graduate architect from The University of Nairobi, Kenya.
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