Reverse Osmosis System Review

Bringing you the best expert advice on all the leading reverse osmosis water filtration system brands. Never buy blind again.


We compare reverse osmosis water purification systems so that you can easily get a sense of the pro’s and con’s and how different systems provide different benefits.


We have selected only the best and most reputable brands and their top products for our reviews. You deserve only the best when it comes to your drinking water and we deliver!

Buyer’s Guide

Not particularly impressed with any of our recommended products? Read our buyer’s guide to find out what considerations we take into account and that will help you buy the best product for you.

The Best Reverse Osmosis Systems of 2017

Read our review of the top reverse osmosis systems on the market today


Aquasana AQ-RO-3.55 OptimH2O Reverse Osmosis Fluoride Water Filter System

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Home Master TMHP HydroPerfection Undersink Reverse Osmosis Water Filter System

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Brondell H2O+ Circle Water Saving Reverse Osmosis Water Filter System

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APEC Top Tier 5-Stage Ultra Safe Reverse Osmosis Drinking Water Filter System (ESSENCE ROES-50)

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Watts Premier RO-Pure 531411 4-Stage Reverse Osmosis System

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# of filtration stages39454
GPD (gallons per day)3575∓555050
Dimensions (inches)12” x 4.5” x 12.5”12” x 4.5” x 12.5”13.8” x 9.2” x 16.5”11” x 11” x 15”12” x 4” x 12”
Star traitRemineralizing filter9 stages of filtration for ultimate effectStylish and compact designRemoves 99.99% of contaminantsVery user friendly

Our Osmosis System Selection for 2017

Here’s more information about each of the systems that you should consider.

#1Aquasana AQ-RO-3.55 OptimH2O Reverse Osmosis Fluoride Water Filter

Our Rating: (4.5/5)

It is a notable fact that the consumption of water in which major minerals have been removed could have unsavory effects on the well being of individuals.

Consequently, this issue has become a major consideration when discussing reverse osmosis water purification. Although there is still a lot of uncertainty about the extent to which the demineralization of water affects our well being, it can be emphatically agreed upon that water that contains a good quantity of major minerals will certainly do the body a lot of good.


In addition to the fact that this processor incorporates a lot of required minerals, it also enriches the taste of the water. This machine will revitalize the pH equilibrium while increasing the alkalinity of the water with noticeable changes in the taste.

All of the aforesaid is a detailed summary of all of its perks as there are no other hidden functionalities or features. This machine comes at a reasonable charge and it has the approval of NSF/ ANSI water excellence and safety stipulations. This water processor is superb in ensuring enhanced taste and odor in addition to the elimination of impurities that could impact negatively on the overall wellbeing. It offers a reliable reverse osmosis membrane filter that actively eliminates any developing impurities.

With all of these features, Aquasana AQ-RO-3.55 OptimH2O R actively eliminates as much as ninety-five percent of fluoride as well as mercury. Out of 100% of chlorine and asbestos impurities, this machine only leaves 3% unscathed and reduces 100% lead and arsenic to as low as 1%. When you consider how comprehensive the purification results are, it becomes clear that any further purification is quite unnecessary.

For our in-depth analysis of this system, check out its accompanying review Aquasana AQ-RO-3.55 OptimH2O Reverse Osmosis Fluoride Water Filter – Want clear, tasty water and keep the essential minerals?

#2Home Master TMHP HydroPerfection Undersink Reverse Osmosis Water Filter System

Our Rating: (4.5/5)

This reverse osmosis purification machine can be described as being expensive and of top-quality as well. When it comes to the cost of this machine, it must be reiterated that it is quite pricey.  Although the cost may be discouraging, you will definitely be persuaded by its extensive range of functionalities which is highlighted by its six added layers of filtration.



This machine provides an incredible six layer filtration system with one of the many added filters dedicated to the elimination of diverse metal solids. Essentially, what this does is to give added protection to the other filters and the entire equipment thus making it serviceable for a long time.


For our in-depth analysis of this system, check out its accompanying review Home Master TMHP HydroPerfection Undersink Reverse Osmosis Water Filter System Review – Is a high-end reverse osmosis filtration system what you need?

#3Brondell H2O+ Circle Water Saving Reverse Osmosis Water Filter System

Our Rating: (4.5/5)

One of the most impressive aspects of this reverse osmosis machine is that it has a distinctive appearance that can be best described as exquisite. Unlike the typical reverse osmosis machine that comes in a bulky appearance, Brondell is particularly sleek and it is quite appealing to put in places where it can be seen.

All of its parts are placed in a single place with just the faucet being detached from the rest of the equipment. It is often expected that reverse osmosis equipment is big and clumsy. However, this equipment stands out from the clutter with a handy structure.

While most folks may be under the impression that certain shapes will pose a challenge when trying to take out filters, this is not exactly true. All that is required is to slip of the rear and push the filter up and it you will remove the filter with ease. When fixing a new filter, all that is needed is to insert and ensure that you get a clacking sound which indicates that it is well fitted. This procedure is completely manual as it is quick and easy.

When you consider the fact that this equipment satisfies as much as four provisions of NSF/ANSI, it becomes evident that the equipment is in fact top grade.

Brondell offer buyers the assurance of convenience and efficiency with a reputation for being more reliable than many other brands. It also incorporates an ingenious Smart Valve innovation.


For our in-depth analysis of this system, check out its accompanying review Brondell H2O+ Circle Water Saving Reverse Osmosis Water Filter System Review – Do you want a stylish reverse osmosis water filtration system alternative?

The Ultimate Reverse Osmosis Buyer’s Guide

Don’t simply believe everything we say! While most individuals have distinctive expectations, areas of interest and restrictions, there are certain features, functionalities, and processes that we can all agree on. In other words, there are aspects that we should all look out for when trying to purchase a Reverse osmosis water equipment.

Give our unwavering dedication to ensuring you get premium Reverse Osmosis purifier, here is a handbook that will equip you for an informed and favorable buying choice.


How reverse osmosis water filtration systems work

How reverse osmosis water filtration systems work exploring the way reverse osmosis water equipment functions

For us to gain insight into some of the important features of a reverse osmosis water equipment, it is imperative to explore the way it functions

For detailed insight, kindly check out this article What is reverse osmosis?

Reverse osmosis water equipment is attached to the water opening in a house and relies on the pressure of water coming in to operate effectively and deliver on company claims.

Typically, the equipment is comprised of a couple of separate parts which includes

  • Three set of filters which includes pre-filters, post filters, and the reverse membrane filters.
  • The tap opening from where water comes out from
  • The reservoir for filtered water
  • Paraphernalia which includes control devices, ducts, and parts that links water flow


Infographic Designed by H2O Distributors

It is expected that pre-filters are developed to eliminate carbon as well as residues that will undermine the equipment and its functionality. On the other hand, the reverse osmosis membrane filter caters to the actual filtration process in which various impurities are eliminated and the taste and odor of the water are enhanced.

All of the paraphernalia in the form of stop regulators are there to ensure the machine filters only as much as the reservoir chamber can handle. When the water in the reservoir chamber is used up, the entire filtration procedure will begin again.


What Should You Look For?

These are the assessment criteria to consider when trying to purchase a reverse osmosis equipment

The amount of daily water (GPD)

Commonly referred to as GPD, it is absolutely imperative that you consider the amount of water that the reverse osmosis equipment can filter in a day. It is expected that the machine filters a minimum of 50 gallons daily. However, it should be pointed out that there new and industrial versions that can deliver as much as one hundred gallons daily. How much water your equipment discharges is heavily dependent on the membrane filter’s capacity as well as the water pressure in your house. Therefore, it is expected that you look in those directions if you have made a purchase that appears not to be living up to claim in the area of water production.

Water Efficiency

This is an important consideration as you do not want a reverse osmosis equipment that discards an alarming volume of water. While this may not affect your pocket, it is definitely an unsavory sight for a conservationist. It is expected that your machine is able to filter a good volume of water that comes in. The most deplorable performance should have 10% filtration out of 100% water inflow. The standard should be 25% and the best should range from 50% to 100%

Contaminants Removed

It should be pointed out that many impurities are eliminated from water when you use a reverse osmosis equipment. Nonetheless, there are some compulsory impurities that have been recognized by the NSF/ANSI that must be eliminated by an efficient reverse osmosis water equipment. Fluoride, chloramine, residues, rust, arsenic, lead, totally dissolved solids and many more. However, while it is expected that the machine will cater to the aforementioned impurities and more, some machines will focus more on certain impurities than others. Case in point is HydroPerfection and its emphasis on microbes.


While some people would trivialize this consideration, it is equally imperative and must be evaluated. It is absolutely necessary that you investigate the size of the machine while ensuring that it is not too big for where you desire to install it. If you don’t want a machine that is too conspicuous or big, then you might consider a sleek design like Bondell.

Storage Unit Size

This definitely something to consider and should be one of your top aspects to check. Depending on the size of your home and purpose of purchase, you must then decide on the size of the reservoir chamber. If the reverse osmosis water equipment is for domestic use then you can go for an equipment with a small reservoir chamber. However, if you intend to use it in an office, a bigger reservoir is recommended.

NSF/ANSI and WQA Certified

The aforementioned to enact safety laws and policies that ensure the best practices and standards in the production of reverse osmosis water equipment. With that in mind, it is imperative whatever equipment you RO brand you choose to purchase is compliant with their laws and have their seal of approval.

Filter Replacement Time

The various RO brands come with their stipulated span before the filter is changed. The more the span before change the better. However, there are some brands that must be changed more often because of the special filtration processes they cater to.