The 10 Best Reverse Osmosis System 2021

Reverse Osmosis System Reviews. 

The best reverse osmosis systems have multiple filter stages, including a pre-filter stage. It can remove up to 99.9% of the pollutants and virus-causing bacteria in tap water.

Among many health benefits here’s what to expect from a top ro system.

remineralization, higher pH+ level, UV sterilization, 99% reduced virus bacteria

Below is our list of best reverse osmosis systems ~ ratings based on water filter quality, features, price & buyer reviews.

Prices range from, $189 to $599.

  1. Frizzlife Reverse Osmosis System PD600
  2. Home Master Hydroperfection Review
  3. APEC Water RO-PH90 Reviews
  4. Express Water Reverse Osmosis
  5. iSpring RCC7AK 6-Stage Review
  6. Home Master TMAFC Artesian Full
  7. APEC Essence ROES-50 Review
  8. Frizzlife WA99 Countertop RO System
  9. APEC Countertop Reverse Osmosis
  10. Aquasure Reverse Osmosis System

Notable 1: Aqua Tru Countertop RO System
Notable 2: Brondell RO Circle Review
Notable 3: APEC Water RO 90 Reviews

Best Reverse Osmosis System 2021

#1.) Frizzlife PD600 Reverse Osmosis System

frizzlife reverse osmosis water system pd600

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Frizzlife PD600 is the best reverse osmosis system for home use.

As a full under sink ro system it has very high flow rateup to 600 gallons per day!

It comes w/ a specialized membrane that filters 0.0001 micron accuracy ~ certified to remove 99.99% of tap water contaminants.

The Frizzlife PD600 water filtration is one of the healthiest reverse osmosis systems for home.

True undersink ro system with remineralization and alkalization.

Frizzlife ro system re-adds healthy minerals such as calcium, sodium & magnesium into tap water.  The alkalization ro stage increases pH level to 7.5+.

Why’s it our #1 pick?

>> It’s a smart reverse osmosis system! <<

It comes w/ a built-in TDS meter for shows the water quality in real-time. On the LED screen you’ll see the current PPM level and color-coded indicators. The Frizzlife ro system also displays the status of water filters.

New model, but Frizzlife filters has very good buyer reviews!


  • Removes 99.99% of particles
  • 4-stage ro water filtration
  • Flow rate of 600 GDP
  • Remineralization ro system
  • TDS water quality meter
  • Easy install unit


  • Little expensive

#2.) Home Master TMHP Hydroperfection Review

Home Master TMHP Hydroperfection

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The Home Master TMHP Hydroperfection has some of the highest ratings online.

Advanced UV sterilization process (safely) destroys 99.9% of germs, viruses, and bacteria.

Flow rate: 75 gallons (daily)

Pricing: Expensive

Home Master HydroPerfection uses a true remineralization process – it adds calcium and magnesium to give tap water a balanced pH and purity level.

As a 9 stage RO system it’s equipped with specialized iron pre-filters.

Home Master Hydroperfection removes:

98% of iron, metallic residue, chlorine and microorganisms

Expensive, but lots of positive buyer reviews!

#3.) APEC RO-PH90 Review

APEC Top Tier 6-Stage Reverse Osmosis System

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The PH90 is an affordable system with many positive reviews.

As a true remineralization ro system it’s one of the best under $400 (USD).

Flow Rate: 90 gallons daily

Pricing: Affordable

It uses a 6-stage process to increase water purity and pH+ levels ~ APEC ro system filters out pollutants and keeps healthy minerals (i.e. calcium, potassium, etc).

pH+ system it comes with specialized filters that remove 99% of water particles:

chemicals, chlorine, lead, bad odors + bacteria

Buyers confirm it’s very easy to install. Takes a few mins to set up and only 2-3 hours for the ro water tank to fill.

APEC RO-PH90 has lots of postive buyer reviews!


  • Remineralization model
  • 6 stage filtration
  • Fast flow rates
  • Easy install unit
  • Affordable price!


  • Requires filter change

#4.) Express Water Reverse Osmosis Review

Express Reverse Osmosis System

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Express Water RO system is one of the best reverse osmosis systems w/ remineralization.

It uses a 11-stage ro water filter process to remove 99% of harmful particles.

Flow Rate: 100 gallons (daily)

Pricing: Affordable

In the final stages, the ro system remineralization process adds health components into tap water. Buyers say they taste a huge difference in purity level right away.

Remineralization adds:

potassium, calcium, magnesium

Express Water RO system also offers a high daily flow – up to 100 gallons!

Affordable price & very good buyer reviews.

#5.) iSpring RCC7AK-UV Review

iSpring 7-Stage Reverse Osmosis System

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The iSpring RCC7AK is an affordable system with multi-layered filter process.

Flow rate: 75 gallons (daily)

Pricing: Medium

It uses a 6 stage filter process to remove 97% of contaminants:

salmonella, e-coli, viruses, bacteria + micro particles

Tap water is remineralized with calcium, magnesium and potassium.

Specialized GAC filter is the final layer of ro filtration before tap water is delivered to the faucet. Buyers say tap water has more natural, pure taste.

iSpring RO water tastes very similar to bottled water

Affordable price w/ good buyer reviews.

#6.) Aquasure Reverse Osmosis System

Aquasure Premier Reverse Osmosis System

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The Aquasure RO System is available in a few options – each is designed with innovative snap-and-twist filters.

Flow Rate: 90 gallons (daily)

Pricing: Medium

Designed with 4 stage water filtration it removes 99% of water contaminants:

bacteria, chlorine, metals and micro-organisms.

Buyers love the quick-twist filter connection and say it is very easy to hook up to your sink.

Aquasure ro also includes new Flow-Lock to reduce leaks.

Expensive, but Aquasure RO System has very good buyer reviews.

#7.) Home Master TMAFC-ERP Artesian Review

Home Master TMAFC-ERP Artesian

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Home Master TMAFC-ERP Artesian has the highest reviews for RO systems.

Buyers say they immediately noticed that their water purity + taste quality increased.

Flow Rate: 75 gallons (daily)

Pricing: Expensive

It uses a 7-stage filtration for high-quality alkaline water.

Home Master TMAFC-ERP system also remineralizes tap water with calcium + magnesium for healthier drinking water.

Fast install — takes only 10 to 20 mins.

Cheaper than the Home Master Hydroperfection RO System. Good RO system, but lots of happy buyer review!

#8.) Frizzlife WA99 Countertop Reverse Osmosis System

frizzlife reverse osmosis water filter system review

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The Frizzlife WA99 is one of the best countertop ro systems with 4-stage filtration.

Super high-end performance, it filters particles as small as 0.0001 microns with 99.99% accuracy.

chlorine, heavy metals, lead, radium, arsenic, etc.

Like the PD600, this Frizzlife reverse osmosis system makes it easy to replace filters.

As a true countertop ro filter system, it is very portable and easy to install. Frizzlife water filtration system requires ZERO installation!

As a water filter it is up to 70% more water efficient. The WA99 vs. regular countertop ro systems, offers a 5:1 water-to-waste ratio.

Best of all is that it’s a smart ro system!

Like the PD600, the Frizzlife WA99 has a LED display w/ built-in TDS water quality indicator. It also shows the remaining lifespan of water filters.

Very good reviews online. Arguably the best countertop ro water system available.


  • Filters 99.9% of contaminants
  • 4-stage ro water system
  • Active carbon filters
  • Smart 
  • Zero installation


  • No remineralization

#9.) APEC Essence RO System Review

APEC Best Reverse Osmosis Filter Systems

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APEC Top Tier reverse osmosis system is a top undersink ro system.

It includes a 5-stage process:

Stage 1: high-grade filters remove dust, particles + rust

Stage 2-3: specialized carbon filter for unpleasant tastes, chlorine + odors

APEC filters remove water cloudiness and coloration. (usually in older homes)

Stage 4: Dow FilmTec filters remove 99% of smaller contaminants: arsenic, lead, chromium, radium, bacteria, etc

Stage 5: captures residual particles (sometimes left from the tank)

It is considered one of the best 5 stage RO systems with 90 gal per day + alkaline filters lasting 1+ year.

Buyers love the APEC reverse osmosis system price and easy install.

#10.) APEC Countertop Reverse Osmosis System

APEC Portable Countertop Reverse Osmosis System

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This APEC countertop is the best reverse osmosis system for high-quality alkaline water.

Flow Rate: 90 gallons (daily)

Pricing: Medium

It uses a 4 stage RO filter system to remove 99% of impurities in tap water:

odors, particles, chlorine, and pollutants

Unlike a reverse osmosis under sink, this APEC ro system is designed for countertops. It does not require any installation and fits every standard faucet.

Some buyers say it is the best RO system for countertops — the Brondell Circle RO and AquaTru can also be considered.

APEC countertop reverse osmosis system has good reviews and fair price.

Notable 1: Aqua Tru Countertop RO System

AquaTru Countertop Water RO Purifier System

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The Aqua Tru countertop reverse osmosis system is a little different.

It is a countertop reverse osmosis system with 4 stage water filtration — buyers say it is one of the best reverse osmosis system models for apartments

Filters: 4 stage ro system

Pricing: Expensive

NSF Standards found that it removes 15X more contaminants than regular water-filter pitchers. This makes it one of the best reverse osmosis system models in 2020.

Aqua Tru countertop reverse osmosis system is also designed w/ quick-change filters.

Easy to install the Aqua Tru attaches in only a couple mins!

Lots of positive buyer reviews online.

Notable 2: Brondell RO Circle Review

Brondell Circle Reverse Osmosis Water Filter System

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The Brondell RO Circle is a 4-stage countertop ro water filter system.

Using a “Smart Valve” the ro system provides a consistent flow rate and does not require electricity.

Flow rate: 18-20 gallons hourly

Pricing: Expensive

It is able to constantly maintain a 2:1 water efficiency ratio with less wastewater than normal ro water systems.

Convenient for families, Brondell Circle comes w/ LED indicators that alert you when to change the filter.

Additional features include:

high water efficiency, indicator light, twist water filters, smart valve, flexible reservoir.

Brondell Circle is one of the best RO systems for countertops.

Notable 3: APEC Water Systems RO-90 Review

APEC RO-90 Best Reverse Osmosis System

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The APEC RO-90 is an affordable reverse osmosis system w/ high flow rate of 90 GPM.

Flow: 90 gallons (daily)

Pricing: Affordable

It uses a 5 stage process to remove 99% of contaminants:

bacteria, viruses, chlorine and chemicals

APEC RO-90 is equipped with long-lasting filters which can produce 2,000 gallons (approx. 12-15 month) of water.

** RO filters last 2X normal filter systems

Buyers confirm that the APEC RO-90 is easy to install and low maintenance.

Affordable with lots of positive buyer reviews!

What is a reverse osmosis system?

Osmosis is the movement of water through a membrane from an area of low solute to a region of high solute. Reverse osmosis is simply the reversal of this process. Scientists discovered a method, many years ago, of forcing pressurized water through a semi-permeable membrane filter. When contaminated water is forced through these filters, nearly all undesirable contaminants and minerals are left behind. This results in a high level of water purity.

Today’s RO systems are high-tech and can remove up to 99.9% of water contaminants. Once filtered, the water is stored in a pressurized tank.

Reverse Osmosis vs. Diffusion Process

In terms of water filtration, the osmosis process is the movement of water through a semipermeable membrane; from a high concentration area to an area of lower concentration.

Diffusion happens when molecules move from a higher concentration area to a lower concentration area, but not through a semipermeable membrane. Osmosis vs. diffusion is the same process, but “osmosis” requires a semipermeable membrane.

What’s a semipermeable membrane?

A semipermeable membrane is a biological or synthetic membrane that allows only certain molecules or ions to pass through it. The rate at which molecules or ions pass through will depend on the concentration, pressure, temperature & permeability of the membrane.

In layman’s terms?

A semipermeable membrane is a specialized filter where only certain aspects can pass through.

Reasons to buy a RO system?

Did you know that over 60% of your body is made up of water?

Most of us actually don’t drink enough water every day – it’s needed to carry out many of your body functions as well as remove waste and carry nutrients and oxygen around your body.

Another aspect to healthy drinking water is access to clean, contaminant-free water. Since tap water is the most common, it makes sense that consumers have additional filters.

There’s a few types of home water filters, but a reverse osmosis systems is the most prevalent.

Best Reverse Osmosis System 2020

Water Softener Systems

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