Reverse Osmosis System Review: The Most Popular RO Systems in the Arizona Desert

Phoenix RO water treatment installation company reviews of best reverse osmosis systemsDespite the fact that Arizona is one of the fastest growing states, it is also one of the dryest, only seeing an average of 12.5 inches of rain annually. This is significant, because water makes up about 60% of our bodies, making clean drinking water essential for life.

This means we need to make every drop count. One way to conserve and ensure we receive quality water in our homes is to choose the best water filtration system.

A standard system requires anywhere up to 15 gallons of dirty water to produce 1 gallon of purified water. A reverse osmosis system review reports waste of little to none. Let’s review more.

What Is Reverse Osmosis?

To answer this question properly, let’s first define osmosis. Osmosis is the movement of water across a membrane from areas of low concentration to high concentration. In plain English, water follows solute (salt, sugar, minerals, etc) if it can to create an even solution.

However, with pressure, we can reverse this process and rather than creating a uniform solution, we can completely separate the water from the solute.

Reverse Osmosis Water Filtration System

A water system is comprised of a pressurized pump that separates the water and the waste to filter clean water back into the house.


The system is rather sophisticated as it recognizes contaminates by their ionic charge and their length. Most RO water systems will block particles with a size over .ooo1 microns and/or a molecular weight over 200.

Pharmaceutical manufacturers, as well as food and beverage companies trust these filtration systems due to their high efficiency.

Reverse Osmosis System Review

Now that you understand the science behind the systems and their efficiency, let’s cover the basics of what you need to look for.

You want to go into your search for the best reverse osmosis water filter completely informed. This means understanding basic terminology.


TDS refers to total dissolved particles. When you measure TDS, you measure the percent of particles, like potassium, chlorides, sulfates, and sodium the filter leaves in your water.

Depending on the initial purity of the water, some systems can filter up to 99% of waste! However, these same systems would filter less than that for brackish and seawater. If you want a high-quality system, look for one with a TDS reduction of 90%.

Efficiency Ratio

All filtration systems come with an efficiency ratio. This tells the amount of pure water needed to replace contaminated water. An efficient system will have a ratio of 4:1 or smaller. The higher the TSD level, the higher the efficiency ratio will be.

Permeate Pump

This pump works to push pure water under pressure into the water tank, using hydropower from stored wastewater. This increases the system’s efficiency by utilizing all available pressure.

Remineralization Filters

Remineralization filters add important minerals back into the water after purification takes everything out. This optional feature increases the pH of the water, giving it a better taste.

Air Gap Faucet

Some systems offer this feature that prevents dirty water from getting siphoned into the system in the case of a clog.

One Stage Vs. Two Stage Systems

A one-stage system sends water out partially pure and partially contaminated. A two-stage system collects the pure water and then uses the wastewater as feed water, resulting in the collection of more pure water.

Single Pass Vs. Double Pass

As the names suggest, a single pass puts the water through the filtration system once, while the double pass system follows the process twice, giving you higher quality water.

RO Water Filter Review

Now that you understand the system specs, let’s look at your options so you can find the best RO system for your home.

iSpring RCC7 WQA 5-Stage

This is reviewed as the best reverse osmosis system for beneath the sink or connected to your ice maker, refrigerated water, or coffee maker. It is noted for both safety and durability.

It uses a 5-step filtration system and boasts an efficiency ratio of 2.5:1. One complaint is that the water tastes funny, mainly because the purity makes it more acidic and it does not reintroduce any minerals back into the purified water.

Though it is easy to maintain, installation can prove tricky.


Express Water ROALK10DCG 10-stage

This system provides a 2:1 efficiency and remineralizes the water for a fantastic taste through the 10-stage claim is said to be a stretch, making it work more like a 7-stage system.

The set up is incredibly simple, and people tend to really like the appearance of the faucet.


Home Master TMAFC

This system offers the best tasting water with its remineralization system and only requires a filter change every 2-3 years. It also offers an amazing 1:1 efficiency ratio!

It only has a 50 GPD but works in systems with low water pressure. This system also comes with a 5-year warranty.

Cost: $$$

Brondell H2O+ Circle

This reverse osmosis system offers both sharp design and top of the line filtering technology. It claims to save up to 10 times the amount of water other systems save and offers a bonus feature to indicate when the filter needs changing.

This reverse osmosis filtration system is also super compact, to leave you plenty of space beneath the sink.


Home Master HydroPerfection

For ultimate efficiency, you can go with this 9-stage filtration system. It boasts a 1:1 efficiency ratio, topping the market.

Maintenance is easy as the large filters only require annual changing. This pump works especially well for homes with low water pressure, because it provides an efficient flow rate.

Furthermore, its UV light kills viruses and bacteria that other models cannot filter out, leaving you with the ultimate protection.

Cost: $$$$$

Protect Your Drinking Water

When it comes to a filtration system, we’re not talking about a luxury. We’re talking about responsibility. Clean water is essential for your well-being.

Use the knowledge you gained in this reverse osmosis system review to help you choose the best reverse osmosis water filtration system to provide you and your family with high-quality water while conserving as much as possible.

When you’re ready, contact us with all your heating, cooling, and plumbing needs!


Contact Hays Cooling, Heating & Plumbing, the top RO water treatment installation company in Phoenix, to find out which reverse osmosis system would work best for your home or business. Email us or call (602) 714-8270 now!

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About the Author

Chris Hays

Founder of Hays Cooling, Heating & Plumbing

Chris and Stacia Hays, are the owners of Hays Cooling, Heating & Plumbing; a family owned and operated HVAC company in Phoenix founded in 2001 that services both commercial and residential customers. Chris leads a team of certified technicians who have over 45 years of combined experience and has earned and A+ rating with the BBB and a strong five star rating online. Hays Cooling and Heating focuses on providing support to their customers every step of the way, with exceptional service and competitive prices. If you are looking for top-notch air conditioning and heating service, contact, Chris or Stacia today at (602) 607-1424.