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Express Water RO5DX 5-Stage Reverse Osmosis System Review

When you start your search for a reverse osmosis system you can quickly get confused by all the technical jargon. And all you really want to know is, will this system be simple to install, and will it give you clean drinking water? The Express water RO5DX is the best place to go when looking for a simple, not-too-expensive reverse osmosis system. The company has no certifications but their products are of high quality and they make it easy to install them so you can drink healthy water at home in your own kitchen!

Express Water RO5DX 5-Stage Reverse Osmosis System Review

If you want to know all the jargon, then please take the time to read the review, if you want to get a great value, effective water filter, you can be sure this is the best value RO system on the market. 

Express water RO5DX Review


Express Water RO5DX Reverse Osmosis Filtration

1. Express Water RO5DX Reverse Osmosis Filtration

NSF Certified 5 Stage RO System with Faucet and Tank

  • Reverse Osmosis Water Filter: Experience what water should taste like with the Express Water reverse osmosis water filtration system reducing up to 99.99% of Lead, Chlorine, Fluoride, Nitrates, Calcium, Arsenic, and more.
  • Water Purification System: Drink the healthiest water on Earth. All our water filters are specially engineered to work together, producing the safest and best tasting water you’ll ever drink

You do not need to break the bank to have the high-end premium reverse osmosis system. High price does not always mean a “Better Filter”. Because the Express water RO5DX is a  premium reverse osmosis system at a budget-friendly price.


Save yourself hours of research, we have done hours of research for you and conclude that this is your best choice if you want a budget reverse osmosis system”.

Water is one of the most important things we consume. So, when you spend your hard-earned money on a water filter system to will remove all harmful chemicals from your tap water for years to come – which type would make more sense? One with 5 stages or 3?

“Express Water RO5DX has five stages of filtration at a price you would usually pay for a filter with only a three stage filtration setup.”

This under-sink drinking water filter has the capacity of producing 50 Gallons per day. Water has a high flow rate of 0.8 gallons per minute.

The filters are of high quality. You will not be busy all the time in replacing filters. Even, you will get an extra set of replacement filters inside the box. The filters are easy to replace.

The installation process is a simpler one, you can get it installed within 1 hour. If you are not enough confident to do it by yourself, you can call the professional or can learn the procedure by glancing the Instructions manual and the Video resources.

It comes with all the essentials and a stylish faucet. This faucet can be installed in any kind of kitchen. You don’t need to put more effort to set up the faucet in your kitchen.


One slight negative of the Express Water RO5DX is the wastewater ratio wasting 3 gallons of water for every gallon of filtered water it produces. This water wastage is a little on the high side, really high-end expensive filters can have a wastage as low as 2:1, or in the best RO filters such as the Home Master TMHP hydroperfection there is a waste ratio of 1:1

Of course, you want the best, and highest efficiency RO water system. Although, an efficient system at a reasonable price is hard to find. Express water is one of them who is recognized because of providing an efficient system.


RO5DX waste ratio of 3 gallons of water to produce a single gallon of purified water is still good and equal to premium reverse osmosis systems like iSpring RCC7AK.

In the world of reverse osmosis filtration, a water waste ratio below or equal to 4:1 is above average and considered as efficient.

Filtration Process

Express water positioned itself as the provider of the cleanest water on the earth. You can say it is just a marketing slogan but the people don’t lie, customers are confirming this statement.

Express water incorporated a 5 stage filtration process. For most people, stages matter a lot although case studies show that the quality of components should be the foremost consideration of every customer before purchasing a reverse osmosis system.

It has all the basic essential filtration stages, capable of removing 99% of contaminants from your water. If you are interested in the system with add-ons like Re-mineralization or UV Light stages. Then this system is not going to be for you, and you should go check out Top 10 Best Reverse Osmosis System Reviews
especially the Comparison Chart to see other recommended Residential reverse osmosis systems that will be better suited to your needs.

Filtration Process

The Filters of express water RO5DX are tested and meet the standards of NSF. The filtration process is nothing innovative, it is pretty much identical to all other 5-stage reverse osmosis systems.

Let’s Have a Quick Recap of How It Works:

When the feed water goes through the first stage it gets cleaned from dust, rust, and from all the possible sediments. The second and third pre-filters remove all the odors, taste, and chemicals from water.

These pre-filters treat the water so that RO Membrane can focus on eliminating all the total dissolved solids from water. The life of RO-membrane depends upon the performance of pre-filters. If Pre-filters failed to purify water and pass the Feedwater pressure as they receive, then your RO-membrane can be damaged and become less effective.

Post-filter (5th stage/filter) ensures the removal of all the remaining odor before it reaches your faucet.

After Passing through these stages now you have fresh purified drinking water.

Filter Replacement

You have to replace the cartridge filters to keep the performance at its maximum level. The duration of filter replacement differs from one another.

Filter Replacement

You can find an extra set of replacement filters inside the box of RO5DX. So, you don’t need to worry about filter replacement costs for at least a year.

It is recommended to replace:

Pre-filters (stage 1, 2 &3) after every 6 months.

RO-Membrane after 1-2 years

Post-filter after 1 year

SpecificationInside the Box
  • Manufacturer: Express water
  • Model: RO5DX
  • Weight:8 Pounds
  • Dimension:2 x 18.8 x 18.1 inches
  • Faucet flow rate:8 Gallons Per minute
  • Production: 50 Gallons per Day
  • Water tank Size:2 Gallon water capacity
  • Warranty: 1-Year limited warranty
  • Certified Storage tank
  • Spare set of replacement filters
  • RO Faucet
  • Leak stopper
  • Drain saddle
  • Quick connect tubing
  • Feed valve
  • Housing wrenches


Express water is aware of the hassle that customers have for installation. They have designed it by keeping their customers in mind. It is easy to install and maintain for every household. Installation should be complete within 1 hour. Simple tools and a little patience is all you need.

It’s better to have a look at the instructions manual before starting the installation. They are well detailed. Following video resources would be also helpful in understanding the whole process.


  • Budget Friendly
  • Ease of installation
  • Spare set of replacement filters
  • Remove all possible TDS
  • Life time Responsive tech customer support
  • 1 year limited warranty


  • Instruction manual is a little bit confusing.
  • Not made in the USA.

Final Thoughts

Express water is not as well well-known as other companies like APEC and iSpring, but it is still getting a higher number of positive reviews. The reviews on Amazon give confidence, and credibility to the quality of the system.

Express water over-delivers, you always get more than what you paid for. Although, it is not made or assembled in the USA which is one of the reasons it a comparatively affordable system. It is the best choice for those who are on a tight budget. It performs well with municipal water and suits the above-average-sized family.

Its easy quick installation process and the drop & Go filter change are interesting parts to look at. The water output quality is premium.

If you are more concerned with the systems assembled in the USA, iSpring RCC7 and APEC ROES-90 would be the best fit for you, as they are similar to this under sink reverse osmosis system but they are made in the USA.

After hours of research, it is on our recommended list because of its affordability, higher water flows with moderate water waste, ease of installation, and filtration result. Give it a try, you will never regret your decision.

We hope, now you have all the essential knowledge about this Water filtration system.

If you are still confused, Let your friends helping you in making the final decision. Do Share and get Some Feedback from friends too. 🙂

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