Best Reverse Osmosis System 2021 | Our Top Picks and Buyer’s Guide

In this article, we’ll help you pinpoint the best reverse osmosis system 2021. Of course, the market is awash with an assortment of models, each with different features and capabilities. Do you know what that means? Well, it implies that pinpointing what you want can be a tricky balancing act. But, it doesn’t have to be that way- not if you read this article to the very end.

But, first things first – why a reverse system water filter over any other solution? Well, because of the five-star efficiency. More specifically, these get can get rid of up to 99% of contaminants in your water. Now, that’s something you’d like to have in your home, more so if you reside in an area with highly contaminated water, right? Indeed.

And now that you’re here, we take you through top-rated units, what makes them special, and what it means to install one in your home. We’ll even tell you how to select a model that suits your household needs. With that out of the way, here’s a rundown of the best reverse osmosis systems.

Review of the Best Reverse Osmosis System 2021

With any of the top 10 systems on this list in your home, you’ll never have to complain about contaminated water in again. And the beauty of it is that you don’t need to spend a lot of money on installation and maintenance. Don’t have the time to go through the 10 of them? No worries, here are our top 3 picks.

• Home Master TMHP System
• APEC 6-Stage System
• iSpring RCC7AK-UV Deluxe System

1. Home Master HydroPerfection System

HydroPerfection is a serious RO system with serious functions. One of the most after units, it promises to help you deal with problems such as service challenges, high water waster, slow flow rate and slightly acid water. Here’s why it’s worth your attention.


Iconic Performance

Setting HydroPerfection apart from other systems in its class is the nine-stage filtration, complete with sterilization, purification, and enhancement. The ripple effect is that you can count on this baby to give incredibly clean water.

It can remove up to 98% of dissolved solids, iron, metals, chlorine, and other contaminants.

Innovative Design

Unlike its traditional counterparts that use the canister filter house design, HydroPerfection flaunts a revolutionary “all-in-one” construction, with a detachable filter. That way, you can replace the filter in a minute.

More than that, the design reduces biofilm and microorganism buildup while eliminating leaks. Further, you can count on this unit to purify up to 2,000 gallons of water without the need to change the filter.

Build-in UV Light

HydroPerfection uses ultraviolet light to fight micro-organisms. What does this mean? Well, it implies that the system is more efficient than chlorine when it comes to fighting viruses and chemicals. Even more impressive, it treats water in a second, without affecting the taste.

2. APEC 6-Stage System

Don’t have the money to splurge on HydroPerfection? No problem! APEC offers the best reverse osmosis system if you’re on a tight budget. Make no mistakes about it though – its output rivals that one of high-models. Here’s what you get;


Alkaline Filter

APEC is all about giving you highly purified water. It has a brand-exclusive calcium mineral cartridge that works by raising the pH level of your water. Now that’s a brilliant function if you prefer having more alkaline in your water.

And, with a six-stage filtration process, there’s no doubt that this system can get the job done regarding getting rid of cysts, bacteria, and organics. You only need to feed it at a pressure of 40 to 85 psi.

Integrated Carbon Blocks

Speaking of the ability to purify water, APEC comes with double carbon blocks can remove 99.99% chlorine chemicals in your water. The visibly large filters provide maximum contact with water, for superior purification.

Plus, the first-rate filters can last for months upon months to guarantee you of reliability.

FDA Approved Materials

One of the most important considerations to make when choosing a reverse osmosis system (more on that later) is the quality of construction materials. On that front, APEC uses FDA Certified JG Food grade tubing parts for your family’s safety.

Add the high-quality, leak-free fitting and what you get is a system that can continuously filter up to 1,500 gallons of water before changing the filters.

3. iSpring RCC7AK-UV Deluxe System

iSpring submits its products every year to the Water Quality Association for testing. That way, you can rest assured that you’re spending your money on a unit with proven ability to remove contaminants that appear in your municipal and well water.

The iSpring Deluxe can get rid of over 1,000 pollutants, including asbestos, giardia, and arsenic. It is a 7-stage filtration model. But, that’s not the only reason to consider this reverse osmosis system.


11-Watt Sterilization Stage

The RCC7AK-UV uses one-of-a-kind sterilization mechanism that makes it ideal for purifying water from lakes and streams. And, to provide better efficiency, it has a unique, integrated sensor that switches the system On/Off automatically.

By extension, this function allows you to save power and extend the life of the UV lamp.

Transparent Housing

You don’t have to second-guess if the iSpring Deluxe is working as it should. It touts see-through 1st stage housing so you can inspect how it’s removing sediments from your water. More than that, you can always know when it’s about time to replace the filter.

Layered Protection

One of the most notable highlights of this unit is the 5-micron GAC and CTO filters. The two combine to enable the system to trap large contaminants, micro-organisms, and small sediments. The result is that the RO membrane and CTO filter can provide optimum efficiency and last longer.

You may also want to know that the iSpring Deluxe uses push-to-connect fitting and color-matched tubing to make installation more straightforward.

4. Express 5 Stage RO Filter

This reverse osmosis system by Express has our vote if you’re after a unit that you can conveniently install your kitchen. It is also one of the cheapest models in this roundup, so if you can consider it if you’re on a tight budget. Here’s why we vouch for it;

Double Sealed Filters

The Express can purify up to 50 gallons of water every day thanks to the innovative filters with dual sealing. In the meantime, the leak-stop valve shut off the system in case of any leaks. There’s even an attached fabric disk, strategically designed to stay in contact with the floor to stop the unit in case the valve malfunctions.

Super Easy Installation

You will love this system’s no-frills design. In essence, this means that you can mount and have it running in less than ten minutes. Besides, the package includes a brass feed and quick connector, so you don’t have to get any hardware to fix your unit.

Five-stage Filtration

Despite the simplicity, Express is a five-stage model. It will get rid of dust, sand, chlorine, odor-causing compounds and other contaminants. Those who have used it say it improves the taste of your water significantly.

Other highlights worth noting about this system include the reasonable one-year warranty and the eco-friendly coconut carbon filters. Be sure to feed the water at a pressure if anywhere between 40 to 80 psi to get the desired results.

5. Brondell RO System

Brondell is the best reverse osmosis system if you’re looking for a compact model, far from the bulky units we’ve reviewed above. Sleek and with high capacity, this workhorse is ten times more efficient than the standard RO systems. But, elegance is not the only of its strong points. Here’s a closer look.


Flexible Reservoir

Apart from the smart valve that makes this unit super-efficient, there’s also an elastic tank that expands and contracts systematically to ensure that the flow rate remains consistent. With such functionality, the Brondell can continue to filter without using electricity or pumps.

Auto Filter Flushing

Unlike most units on the market, this one flushes the reverse osmosis filter automatically. That way, the filters can last for two more years. On your part, it means that you can continue to enjoy purified water in your home without having to spend money on new filters (at least for another 24 months).

Rapid Refill Rate

Brondell uses a unique technology that allows this system to refill twice as fast. It also offers four-stage filtration to provide optimal filtration. And, as you’d expect, this unit has the NSF AND ANSI certification for safety.

Did we mention that each package comes with a chrome plated faucet? And the beauty of it is that the faucet has a built-in LED indicator to notify you when to change the filter. How nice!

And, for those who may want to know, Brondell takes about 3.8 minutes to fill a one-gallon jug.

6. Home Master TMAFC-ERP System

Home Master is a leading brand in the water filters circles, and a look at this RO system is all you need to figure out why this is the case. A premium model, TMAFC-ERP will reduce water waste up to 80% and while increasing production by a remarkable 50%. Here’s why it appears on this list.


Innovative Permeate Pump

TMAFC-ERP’s permeate pump offers seven stages of filtration to get rid of as much as 99% of contaminants. With such capacity, it will come handy if you live in an area with contaminated municipality water with high amounts of chlorine and dissolved solids.

Full Contact Technology

This system is one of the few on the market that can add minerals in your water to improve taste. It touts the patented Full Contact technology to drop magnesium and calcium minerals two times during the purification process.

Fast Flow RO Kit

TMAFC-ERP will give you a higher flow rate in comparison to most units in its class. It uses the brand-exclusive Fast Flow kit with relatively larger tubes and fittings as well as high flow components. Those who’ve used it say that this function nearly triples the flow rate of your faucet.

On top of that, this system’s modular design allows you to “push in” and secure filters without the need to use wrenches. How about the filtering capacity? Like its counterpart above, it can purify up to 2,000 gallons with a single filter!

7. APEC 5-Stage System

APEC makes a return to our reverse osmosis system reviews, with this five-stage model. With it in your home, you don’t have to worry about buying bottled water for drinking or cooking. We recommend it to the more expensive counterpart (number 2 above) if you’re on a tight budget. Here’s what it has to offer.


Top-Notch Output

Sure, this system won’t cost you as much, but that’s not to say you’ll be compromising quality and performance. On the contrary, it can filter up to 50 gallons of water at a pressure of 60psi per day .r 30 gallons per day at 50psi.

For those who may want to know, this thing has a tank capacity of four gallons and can dissolve 2,000 solids ppm.

Robust Design

The APEC 5-stage RO system will last and last. It comes with a hardwearing outer casing that can outlast your need to purify water. Plus, the makers of this unit boast over 20 years of manufacturing prowess. Their products are not only dependable but also noise-free.

Leak Free Operation

The last thing that you want in your house is an RO system that leaks. Why? Well, you’ll have to deal with water wastage and by extension high utility bills. But, that shouldn’t be a cause for concern with this model.

Apart from providing a leak-free performance, it also offers leak-free filtration. It is worth noting that you’ll get a 100% lead-faucet with every purchase. And then there’s the JG food grade part to guarantee safe, uncontaminated water every time.

8. Olympia OROS-50 5-Stage System

Arguably the best whole house water filter for mid-budget, Olympia OROS operates at a pressure of 50 and 100 psi. And, with dimensions of 16.5 x 16.5 x 19.7 inches, it will fit under most sink cabinet. In essence, the reasonably compact design makes this unit a good choice if you’re in for something small. Here’s why you should spend your money on it.


Five-Stage Filtration

Yes, Olympia OROS is that good! It will get rid of sediments in the first stage before passing the water into the micro carbon filter and RO membrane. It even has a post-carbon filter to remove harmful metals, chlorine and a host of other contaminants.

Quick Connect Fittings

You don’t have to be a DIY enthusiast to get this system up and running. It offers simple, straightforward mechanism with quick-connect fitting caps. And, to make it even easier for you, each cap has a unique color so you can coordinate the parts appropriately.

Automatic Shutoff Valve

The Olympia OROS will turn off automatically after reaching the maximum filtration capacity. That way, you can attend to other chores as it purifies your water. The only thing that you need to do is to ensure that you use a 3/8 inches pipe to feed it with water.

Speaking of which, be sure to mount the faucet at a range of anywhere between ½ to 1½ inches on your countertop to enjoy maximum water flow. Of course, you’ll get a faucet with each system.

9. Whirlpool WHER25 System

Whirlpool has perfect the art of churning out reliable home appliances for more than a century and the WHER25 RO system is proof enough. For starters, this is a three-stage model with a capacity to filter up to 50 gallons of water every day. Now, that’s what you get with some high-end 5 or 6-stage filters. Here’s what you get a cost that won’t leave a hole in your wallet.


EZ Change Light Indicator

Here’s the thing – you need to change your system’s filter to keep working them as usual. In other words, you must know when to replace the filter to avoid interfering with the functionality of your unit. WHER25 comes with a strategically placed indicator that notifies you about filter change to keep your system running.

Space Saving Design

You don’t have to give up room in your kitchen to fix this filter. It has a small footprint that enables you to install it under your sink while leaving enough space on your countertop. For those who may want to know, it measures 13.5 x 14.5 x 15.5 inches with a total weight of less than 13 pounds.

What’s more? You can count on WHER25 to get rid of harmful contaminants including lead and cysts thanks to the three-stage filtration capacity.

UltraEase Filters

All you need to do to replace the filter is a simple quarter turn of the wrist, and you’re good to go. That way, you don’t have to touch the dirty filter or switch off your water supply. As for the durability of the filters, these can last for up to six months.

10. Global Water 5-Stage System

Global Water completes our best reverse osmosis system collection with this five-stage model. A low-budget option, this is a high-performance unit with the ability to get rid of 99% of contaminants including lead and fluoride. We dissect right through it and what it has to offers.


Quick Connect Fittings

While no one will tell you this, you need to fix your RO system correctly to ensure reliability. At times, you need to hire a plumber to do the job. That, however, shouldn’t be a cause for concern with Global Water. All its part fit into each other with a click, enabling you to install it into place securely.

Plus, the package comes with an easy to understand user guide.

ANSI Certification

You don’t have to worry about this unit’s safety. We’re talking ensuring that the filtered water is safe to drinks even after coming into contact with the materials. Both the tubes and outer casing meet the NSF and ANSI requirements to give you can your family, clean, high-quality drinking water time and again.

Up to 12 Months of Filtering

Yes, Global Water will work for up to one year without a filter change. During that period, it can purify up to 1,500 gallons of water. Sure, that’s not the highest amount, but it’s enough to give a family of four people clean water round the clock for eight to twelve months.

For the best results, be sure to feed this system with water at a pressure of around 50psi. Did we tell you that Global Water doesn’t require electricity to run? Yes, it uses water pressure. How nice!

What Is a Reverse Osmosis Water Filter?

As the name suggests, an RO filter is one of the available options to purify your drinking water. Of course, you have to install it in your house, preferably below the faucets. That way, it can “sieve” contaminants before your water gets to the collection point.

One thing that makes a reverse osmosis water system an attractive option in comparison to other methods is the ability to purify up to 1,500 gallons of water before you need to change the filters. In fact, you’re better off with an RO unit if you are looking for an affordable way to get clean water drinking and cooking water for your family.

How Do Reverse Osmosis Filters Work?

For starters, reverse osmosis is a relatively straightforward process. More specifically, it uses water pressure to force water through a semi-permeable membrane. The idea is to get rid of contaminants from your water. In fact, this is the same procedure you’d use if you want to remove dissolved inorganic solids such as salts from any solution.

But wait; is there any chance that some contaminants will not pass through the membrane?

Okay, an RO system, by design will eliminate solids and flush them down the drain. The ripple effect is that you’ll get clean, better-tasting water. It is essential to mention that most reverse osmosis provides three or more filtration stages.

In essence, this means any impurities that escape the membrane will get sieved as they go through the other stages of the system. Here’s a breakdown of how an RO system works to help you understand the entire process.


Here, the unit removes bigger sediments and solids to prevent potential damage to the membrane caused by overexposure and clogging. The sediment filter also gets rid of chlorine and dissolved material from the water.

Reverse Osmosis Membrane

Here, the water passes through a semi-permeable membrane to remove the remaining impurities. When the water gets to the other end, it doesn’t contain pollutants such as fluorides, pesticides, lead, copper, TDS and more.

Post Filtration

Before you can drink the water, it has to go through a post filter to get rid of any contaminants that may have escaped the two stages. Now, the water goes to the system’s tank where it is ready for consumption.


At this stage, the water goes through an activated carbon filter before it reaches the faucet. The filter gets rids of undesired odors and flavors to give you clean, great tasting water.

Benefits of Using a Reverse Osmosis System

So, why would you want to install an RO system in your home over any other option? Well, here’s a rundown of what makes it’s a good choice.

It Gets Rid of Contaminants

This is the number one reason for mounting an RO system into your home. See, water, primarily municipal or stream water is likely to contain sediments and other dissolved solids that make it unfit for human consumption.

With a sound system, however, you can eliminate pollutants including lead, copper, arsenic, nitrates radium and cysts to mention but a few. In other words, reverse osmosis could very well be your best bet to purifying your drinking water.

It Reduces Sodium from Soft Water

Sure, you can use water softeners to get rid of hard minerals from the water. Still, softeners don’t purify your water. Besides, not everyone loves the taste softeners leave in your water.

What’s more? Softeners use ion exchange process to remove hard minerals, replacing them with sodium molecules. Put differently – there’s a probability that your water might contain dissolved solids even after using a softener.

Reverse osmosis, on the other hand, is different and efficient at removing sodium from your water. An RO system will purify your water with no traces of sodium.

It Saves you Money

Yes, you don’t have to worry about buying bottled water with a reverse osmosis system installed in your home. You may not know it, but you could be spending a tidy sum on bottled water. According to statistics, Americans spend more than $15billion on bottled water. Now, that’s a lot of cash.

What’s more? Plastics litter the environments since most of them don’t get recycled. Besides, the bottom of a water bottle isn’t as clean as you’d think.

Purified Water is Ideal for Cooking

The last thing that you want to do is to cook with water containing impurities. Of course, it affects the taste of your meals, not to mention that you don’t know what you might end up putting in your house. Municipality water, for instance, contains a lot of chlorine, a compound that can discolor your food.

But, with purified water, your food and beverages will taste better. In fact, there’s an RO system in any every serious restaurant.

You’ll Get Clear Cubes

Ice cubes with impurities look cloudy and white. What does this tell you? Well, it implies that you’re likely to discolor your water or drinks if you use such cubes. That, however, shouldn’t be the case if you make ice cubes using purified water,

More than that, repeated experiments show that cloudy cubes tend to be softer and melt faster than their clear counterparts. In short, this means that cubes made using RO purified water will keep your drinks cold without diluting them down as much.

RO Water Has a Better Taste

Indeed. The lack of pollutants in your water means that you don’t have to deal with a sour aftertaste. The water is refreshing, with no odors. It essential to mention at this point that you should use an RO system with not less than four filtration stages if you plan to use the water for drinking. That way, you can rest assured it’s free of any impurities including harmful metals such as lead.

How to Choose the Best Reverse Osmosis System 2021

You have to get well acquainted with the basics if you’re going to choose the best reverse osmosis system 2021. Here’s what should be running through your mind. Ask yourself;

How Many Stages of Filtration Does it Offer?

You should know that the more the purification stages, the better the system. At very least, go for a unit that offers three stages of filtration. You want a model that can get rid of sediments to make the water usable. Be sure to go for a one that has up to six filtration stages if you want clean, better tasting water for household use.

The hardness of the incoming water should give you an idea of what to buy. The more the hardness, the more the filtration stages you require.

How Big is the Unit?

Okay, RO systems can be bulky. You should, therefore, consider the available room under your sink. The last thing that you want is a unit that will hardly fit. On top of that, a big model might block space if you’re installing it in your kitchen.

The same goes if you plan to mount the system on your countertop. So, how do you determine the right size? Well, measure the available space so you can figure out the dimensions of an RO system that works for you and your needs.

Keep in mind that the size can also affect the ease of installation. Of course, the smaller the filter, the easier it is to mount.

How Many Gallons Can it Filter?

Consider an RO’s output before spending your money on it. Why is this essential? Because it helps you know if the unit can handle your needs. Different models offer varying specs, ranging from 50 to 80 and 100 gallons a day.

A unit that can deliver 50 gallons per day, for instance, is enough for a small household. A 100-gallon capacity system, on the other hand, is perfect for a busy commercial setting with a high need for pure water.

How Easy is it to Install the Unit?

You don’t have to struggle to mount your RO system. At the same time, you must install it correctly to ensure that it functions optimally. Go for a model that comes with click-to connect tubes and parts. That way, you can have it in place quickly. In most cases, it shouldn’t take you more than 30 minutes to have your system up and running.

Note that many units on the market come with a user guide to help you with the mounting. Still, consider hiring a professional plumber if you cannot understand any of the instruction given.

How Much Waste Does it Create?

One of the disadvantages of using an RO system is that it creates a lot of water waste. Many models only purify anywhere between 5 and 15 percent of the water they filter. Even then, you should choose a unit designed to reduce as much water waste as possible.

Others direct the water to a separate tank so you can use it for cleaning your dishes and so on. These are “zero-waste” systems. They make a better choice if you don’t mind using water with dissolved sediments for other household purposes.

How Durable are the Filters?

You want to get value for your money, right? Indeed, so you should consider the lifespan of the filters of the system that you plan to buy. Some can last for up to six months while others will power through an entire year.

The more you change the filter, the expensive it is to maintain your system. Choose a unit that can last up 1,500 gallons before you need to change the filters. Some provide up to 2,000 gallons of pure water without the need to change the filters.

Be sure to read the product description to know how much water the system can filter before a filter replacement.

How Much Does it Cost?

RO systems come at varying prices. And, you can only buy what you can afford. The most essential to note here is that high-end units that sell expensively aren’t necessarily the best. The same goes for affordable ones. So, which system should you buy?

Look for one that has the capacity and features to handle your needs. It is all about the features and what the unit can do that matter.

What Do Users Think About the System?

Read independent reviews about a particular water filter before spending your cash on it. You want to know what previous users are saying about it and if it makes a good purchase. Go through the negative remarks as they enable you to have an idea of the downsides of the model.

Of course, you’re likely to get value for your money if you invest in a highly rated system with lots of positive reviews.

In Conclusion

Statistics show that up to 70% of all the water in the United States contains impurities. In essence, this means that it isn’t 100% fit for domestic use. Sure, you can use it for household chores such as cleaning, but drinking it isn’t safe. More than that, the water isn’t ideal for cooking.

It, therefore, makes perfect sense to invest in the best reverse osmosis system you can afford. That way, you can rest assured that the water you’re using is safe for you and your family.

We hope that you have found these reverse osmosis system reviews helpful. We trust that we’ve enabled you to choose what’s perfect for your needs. As a rule of them, we shall keep going through the list to ensure that it remains as up to date as possible. Indeed, we will share tips on how to keep your drinking water safe.

Feel free to drop us a question or comment regarding the RO systems we’ve reviewed above, and we’ll get back to you as soon as we can. For now, over to you! Happy shopping!

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