---
product_id: 7828266
title: "Express Water RO5DX 5-Stage Under Sink Reverse Osmosis Water Filter System, NSF Certified 372 & 58, 50 GPD, Reduces 99% of Impurities, Deluxe Chrome Faucet"
brand: "express water"
price: "VT119389"
currency: VUV
in_stock: true
reviews_count: 8
category: "Express Water"
url: https://www.desertcart.vu/products/7828266-express-water-ro5dx-5-stage-under-sink-reverse-osmosis-water
store_origin: VU
region: Vanuatu
---

# 99.99% contaminant removal 0.8 GPM fast flow faucet 5-stage filtration system Express Water RO5DX 5-Stage Under Sink Reverse Osmosis Water Filter System, NSF Certified 372 & 58, 50 GPD, Reduces 99% of Impurities, Deluxe Chrome Faucet

**Brand:** express water
**Price:** VT119389
**Availability:** ✅ In Stock

## Summary

> 💧 Elevate your hydration game with pure, professional-grade water at home!

## Quick Answers

- **What is this?** Express Water RO5DX 5-Stage Under Sink Reverse Osmosis Water Filter System, NSF Certified 372 & 58, 50 GPD, Reduces 99% of Impurities, Deluxe Chrome Faucet by express water
- **How much does it cost?** VT119389 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/7828266-express-water-ro5dx-5-stage-under-sink-reverse-osmosis-water)

## Best For

- express water enthusiasts

## Why This Product

- Trusted express water brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Smart Leak Detection:** Built-in emergency leak stop sensor protects your home from unexpected water damage.
- • **Sustainable & Refreshing:** Eco-friendly coconut carbon filters deliver crisp, natural taste while reducing plastic waste.
- • **Sleek & Space-Savvy Design:** Compact 14"x5"x15" footprint fits discreetly under your sink or cabinet without clutter.
- • **Purest Water, Zero Compromise:** Eliminates up to 99.99% of lead, chlorine, fluoride, PFAs, and more for the cleanest sip every time.
- • **Effortless Under-Sink Installation:** Designed for quick DIY setup—no plumber needed, saving you time and money.

## Overview

The Express Water RO5DX is a NSF-certified 5-stage reverse osmosis filtration system that removes up to 99.99% of harmful contaminants including lead, chlorine, fluoride, and PFAs. Featuring a compact under-sink design with a 4-gallon storage tank and a fast-flow faucet delivering 0.8 gallons per minute, it offers easy DIY installation without power requirements. The system includes smart leak detection and eco-friendly coconut carbon filters, making it a top choice for health-conscious professionals seeking premium water quality and convenience.

## Description

Make the purest water with your own home reverse osmosis system. Great in the kitchen: improve the taste of your cooking, coffee, ice, and drinks. experience true reverse osmosis water. Get setup fast with our quick connect tubing system. Includes fast flow faucet with 0.8 gpm delivery. a compact water filter for sink made to fit under counter in a cabinet. Best for house, apartment, residential, well water, industrial, rv, and office uses. Certified by an independent laboratory to NSF standard. Comes with 4 gallon (3.2 gallon water capacity) storage tank and tank stand. Includes all filters needed for setup and first year of use. Can be wall / cabinet mounted or freestanding, made for indoor use. Can be installed undersink, in a basement or other remote locations, you may need additional tubing or a delivery pump depending on how far away you plan to install or if you plan to link to a refrigerator as well. For every one gallon of water produced the system discharges between one and three gallons (depending on the pressure and quality of your incoming water). The system is compatible with 3/8" and 1/2" under sink connections. includes filter housing wrench. Operates on 40-80 psi water pressure, you may need a booster pump or pressure regulator depending on your water pressure. The water is cleaner and more convenient than any pitcher, faucet filter, or countertop systems. Express Water’s 5 stage reverse osmosis water filtration system RO5DX is the complete solution for your drinking water.

Review: An amazing health upgrade for your home - I’ve been using this reverse osmosis water system for about five months now, and I can honestly say it’s one of the best upgrades I’ve made for my home. Even after months of use, my TDS reading is at 9 ppm and the water still tastes like bottled water. The difference in water taste is huge for me, it’s incredibly clean, crisp, and refreshing. Even guests have commented on how good it tastes. Five months in, the water still tastes just as pure as it did on day one, which really speaks to the system’s reliability. It’s made a noticeable difference not just for drinking water, but also for coffee, tea, and cooking—everything tastes better. Installation was straightforward, although I will say the filter housing can be hard to screw on, I had to use a hammer to knock the wrench to get it tight. Overall, this system has been well worth it for the peace of mind and the consistently great-tasting water. Highly recommend to anyone considering making the switch from a Brita!
Review: The best health purchase we have made in a while - The best health purchase we have made in a while!!! The product came fast it came with an extra set of filters for the three main stages of filtration. It came with fittings to install completely with a simple set up. I laid out the set up to decide if I needed anything extra to install under my sink. I have both a ice maker and a small hot water heater for instant hot water for herbal tea under the sink and I wanted both of them to get the filtered water as well... So I needed an extra 1/4 inch tee and a few feet of 1/4 poly which I went to the hardware store to buy... You can design it how you want and I also got a 1/4 inch shut off to put on my line that feeds my hot water heater, so I can turn it off and work on it if I ever need to and not have to turn off my filter water... Make your own plans and go to the hard ware store and get the advice from the workers there and just go for it and you will not be sorry, because this is a great purchase. I contacted the seller and got semi clear covers and they were awesome to work with, but clear is not recommended because it could introduce light into where the filters are and theoretically introduce light grown organisms... So it needs to be where NO light will get to the filters, if you choose this option and the cans are off clear and if I had to recommend one or the other, I would stick with the white as they are the best; but I wanted to mention it as this company is so good and responds to your needs so well and I felt obligated to let others know that they will take care of you if you need something... I was curious how the ice would be after we installed this system and as others had said ... the ice was almost clear, which was cool :)... I will add this as it might be something you do it your-selfers might want to think of doing... While I had everything removed from under the sink, I also got a small piece of lanolin and put it under the sink and brought it up on the sides a couple inches and calked in so that when any water does spill, when changing filters, or simple wear on valves / faucets (as it is inevitable over the years) it is no problem whatsoever and it looks nice and clean and was so cheep and simple to install... (note: I made it so if ever there is a leak on any of my many fittings, water will come out the front and onto my sink rug and I will notice it and not have any problems going under cabinet/down stairs... looks good too) Water quality when measured at the same time from the regular faucet and unfiltered using a TDS unit (total dissolved solids) purchased here on desertcart is at 254 ppm (parts per million) and after it has been filtered through this unit, it was at 17 ppm and a week later it dropped to 14 as it cleaned out I guess (if I just barely touch the water with the tip or reader it is below 10 and if I Put entire end into water it is at 14 (It might get a bit lower as it gets more water through it, and water; and obviously, minerals will differ from one location to the next... ).. Water tastes similar to distilled water as compared to our regular water... We could not be more happy to have this very inexpensive and quality system in our home and the extra security of having pure water is awesome!!! LOVE IT

## Features

- 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, PFAs/PFOs, 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
- Under Sink Water Filter: Don’t waste money on professional installation. Express Water’s quick and easy-to-understand design means you can install and understand everything about your new water filtration system
- Under Sink Water Filter System: No need to mess with refilling or activating your water filter, Express Water’s water filtration systems automatically fill your water tank with high quality drinking water
- Leak Detection: Each under sink water filter includes an emergency leak stop detector that shuts off water flow when it detects unwelcomed moisture
- Help Has Arrived - Support from experts who can answer any of your questions about your home’s water
- Love your water - Environmentally friendly coconut carbon filters give unequalled quality and a clear natural taste

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00J2DGTD8 |
| Best Sellers Rank | #11,462 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #22 in Under-Sink & Countertop Filtration |
| Brand Name | EXPRESS WATER |
| Capacity | 4 Gallons |
| Container Type | Tank |
| Customer Reviews | 4.6 4.6 out of 5 stars (6,143) |
| Global Trade Identification Number | 00705332529235 |
| Included Components | RO5DX, Extra Filter Set, Owners Manual |
| Installation Type | Under Sink |
| Item Dimensions L x W x H | 14"L x 5"W x 15"H |
| Item Type Name | NSF Certified 5 Stage RO Water Filter System with Faucet and Tank – Under Sink Water Filter – plus 4 Filters – 50 GPD |
| Item Weight | 31 Pounds |
| LowerTemperature Range | 39 Degrees Fahrenheit |
| Manufacturer | Express Water |
| Material Type | Alloy Steel, Brass, Plastic |
| Maximum Flow Rate | 181 Liters Per Hour |
| Model Name | Reverse Osmosis Water Filtration System – |
| Model Number | RO5DX |
| Other Special Features of the Product | Reduce TDS |
| Part Number | RO5DX |
| Power Source | No Power Needed |
| Purification Method | Reverse Osmosis |
| Smart Home Compatibility | Not Smart Home Compatible |
| Supported Water TDS Level Maximum (PPM) | 300 |
| UPC | 705332529549 705332529235 |
| Unit Count | 1.0 Count |
| Upper Temperature Rating | 100 Degrees Fahrenheit |

## Product Details

- **Brand:** EXPRESS WATER
- **Capacity:** 4 Gallons
- **Included Components:** RO5DX, Extra Filter Set, Owners Manual
- **Installation Type:** Under Sink
- **Material:** Alloy Steel, Brass, Plastic
- **Package Information:** Tank
- **Power Source:** No Power Needed
- **Product Dimensions:** 14"L x 5"W x 15"H
- **Purification Method:** Reverse Osmosis
- **Special Feature:** Reduce TDS

## Images

![Express Water RO5DX 5-Stage Under Sink Reverse Osmosis Water Filter System, NSF Certified 372 & 58, 50 GPD, Reduces 99% of Impurities, Deluxe Chrome Faucet - Image 1](https://m.media-amazon.com/images/I/81-KV0izUXL.jpg)

## Available Options

This product comes in different **Color, Style** options.

## Questions & Answers

**Q: Is it possible 1) to exchange the metal tank for a food grade plastic one of the same capacity and 2) add  a UV filter to this system?**
A: Dear Valued CustomerYes you can add UV to the system and about the tank we do not carry the plastic tank any more but let me give you some info about the tank Inside the tank is a bladder made of a material called butyl. Water does not touch the metal or plastic shell of the tank. It touches only the butyl bladder and spout (usually stainless steel or hard plastic) as it enters or leaves the tankA synthetic rubber, or Elastomer, butyl rubber is impermeable to air and used in many applications requiring an airtight rubberThis RO tank has been tested and certified by NSF International under NSF/ANSI Standard 58 for material and structural integrity.Best Regards

**Q: How do you know it is time to change the filters?**
A: @Climers got it right. Most of the other answers are not, in that they suggest you to change filters AFTER you have detected something wrong at the output. Well, by that time, your RO membrane is kaput - no good any more. RO membranes are very sensitive to chlorine; so you must change your 3 front-line filters (1 sediment and 2 carbon) before they start to leak chlorine to the membrane. Doing so will prolong your membrane's life for many years. I have had a system working perfectly after 8+ years of continuous service, just by changing the first 3 filters regularly (yearly).

**Q: I just ordered the filter system, do you sell extra complete sets of the filters?**
A: Yes, You can also get them at Walmart, Home Depot, Etc if you live where there is one.

**Q: What is the dimension of the manifold?**
A: 13" wide, 16" high, 6" deep. the tank if 12" in dia and 16" high

## Customer Reviews

### ⭐⭐⭐⭐⭐ An amazing health upgrade for your home
*by K***T on April 10, 2026*

I’ve been using this reverse osmosis water system for about five months now, and I can honestly say it’s one of the best upgrades I’ve made for my home. Even after months of use, my TDS reading is at 9 ppm and the water still tastes like bottled water. The difference in water taste is huge for me, it’s incredibly clean, crisp, and refreshing. Even guests have commented on how good it tastes. Five months in, the water still tastes just as pure as it did on day one, which really speaks to the system’s reliability. It’s made a noticeable difference not just for drinking water, but also for coffee, tea, and cooking—everything tastes better. Installation was straightforward, although I will say the filter housing can be hard to screw on, I had to use a hammer to knock the wrench to get it tight. Overall, this system has been well worth it for the peace of mind and the consistently great-tasting water. Highly recommend to anyone considering making the switch from a Brita!

### ⭐⭐⭐⭐⭐ The best health purchase we have made in a while
*by F***W on April 18, 2015*

The best health purchase we have made in a while!!! The product came fast it came with an extra set of filters for the three main stages of filtration. It came with fittings to install completely with a simple set up. I laid out the set up to decide if I needed anything extra to install under my sink. I have both a ice maker and a small hot water heater for instant hot water for herbal tea under the sink and I wanted both of them to get the filtered water as well... So I needed an extra 1/4 inch tee and a few feet of 1/4 poly which I went to the hardware store to buy... You can design it how you want and I also got a 1/4 inch shut off to put on my line that feeds my hot water heater, so I can turn it off and work on it if I ever need to and not have to turn off my filter water... Make your own plans and go to the hard ware store and get the advice from the workers there and just go for it and you will not be sorry, because this is a great purchase. I contacted the seller and got semi clear covers and they were awesome to work with, but clear is not recommended because it could introduce light into where the filters are and theoretically introduce light grown organisms... So it needs to be where NO light will get to the filters, if you choose this option and the cans are off clear and if I had to recommend one or the other, I would stick with the white as they are the best; but I wanted to mention it as this company is so good and responds to your needs so well and I felt obligated to let others know that they will take care of you if you need something... I was curious how the ice would be after we installed this system and as others had said ... the ice was almost clear, which was cool :)... I will add this as it might be something you do it your-selfers might want to think of doing... While I had everything removed from under the sink, I also got a small piece of lanolin and put it under the sink and brought it up on the sides a couple inches and calked in so that when any water does spill, when changing filters, or simple wear on valves / faucets (as it is inevitable over the years) it is no problem whatsoever and it looks nice and clean and was so cheep and simple to install... (note: I made it so if ever there is a leak on any of my many fittings, water will come out the front and onto my sink rug and I will notice it and not have any problems going under cabinet/down stairs... looks good too) Water quality when measured at the same time from the regular faucet and unfiltered using a TDS unit (total dissolved solids) purchased here on Amazon is at 254 ppm (parts per million) and after it has been filtered through this unit, it was at 17 ppm and a week later it dropped to 14 as it cleaned out I guess (if I just barely touch the water with the tip or reader it is below 10 and if I Put entire end into water it is at 14 (It might get a bit lower as it gets more water through it, and water; and obviously, minerals will differ from one location to the next... ).. Water tastes similar to distilled water as compared to our regular water... We could not be more happy to have this very inexpensive and quality system in our home and the extra security of having pure water is awesome!!! LOVE IT

### ⭐⭐⭐⭐⭐ Great RO at an amazing price (Highly recommend purchasing a permeate pump as well)
*by H***Y on June 5, 2020*

I've had RO systems for the better part of 20+ years. Our household goes through a lot of fresh water daily, so having an RO system has paid for itself many times over. Even if you don't go through a ton of water for drinking, cooking, iced tea, etc...the convenience of not having to buy unlimited amounts of bottled water and/or filling water jugs at your local water store is definitely an added bonus. I've had 3, 4 & 5 stage RO units throughout the years and they've all produced great tasting water. My past 3 or 4 RO units (which are usually purchased when we move houses) have been Watts Premier models. They specialize is very fast & easy filter changes and they are definitely easy filter changes. However, you pay a little larger price for that convenience. Their 4-stage RO units run about $200 and the yearly filter changes run about $60. RO units also have 2 types of faucets: 1) faucets with an air-gap and 2) faucets without an air-gap. By definition: "Air gap faucets were designed to protect the RO system. In the event of clogging, a small amount of air, rather than dirty water, would go back into the RO system". The air gap will always make some noise when the tank is filling as air and water pass through the drain line and sound escapes from the little air gap hole. The Watts Premier RO systems have an air gap. If your system has an air gap, you cannot replace the RO faucet with a non-air gap faucet...you need to replace the faucets (if necessary) with the same kind. During my most recent search for an RO unit to install in a new home purchase, I came across this Express Water RO unit at an amazing price (which included a year of filter changes). I was a bit skeptical given the price, but the amount of solid reviews made it an appealing option. I made the purchase and had friend help with the install since I am a large framed man that does not easily fit under the sink area. After a month of use, I can say I am very happy with the taste, performance & overall experience with the RO. With that said, I found myself missing the benefits of the permeate pump that I had installed in my last house. If you just care about the RO review, then I am very pleased and give it 5 stars. If you want to know what a permeate pump is and WHY you should get one, read on. This is the permeate pump available on Amazon that I purchased and am reviewing below: https://www.amazon.com/gp/product/B005VPPRX4/ref=ppx_yo_dt_b_asin_title_o06_s00?ie=UTF8&psc=1 Let me start by saying I will NEVER have another RO system without a permeate pump again. Permeate pumps use the wastewater that is expelled during the RO process to greatly increase water pressure at the RO faucet, minimize wastewater and fill the tank in less time. They can be installed on nearly all standard RO systems aftermarket so there’s no need to buy a bundled RO system that includes the permeate pump (since most of those cost a lot more than buying the units separately). I was introduced to permeate pumps about 4 years ago. I purchased a Watts Premier RO system from Costco (when they still sold Watts Premier) and had it installed by a plumber (since I needed a hole drilled in my granite countertop). I consider myself pretty handy and although plumbing in general isn’t rocket science, I’m a large framed man that hates trying to squeeze under sinks to do pretty much anything plumbing related. After the RO was installed, I was getting smaller (and broken) pieces of ice at my refrigerator since my RO was feeding my ice maker through a longer 1/4” line from the kitchen island to the refrigerator. This a drawback of a lot of RO systems which feed ice makers that aren't in very close proximity. After researching I came across a permeate pump (sold through Watts Premiere) and made the purchase. The included instructions were specific for the RO unit I had and it was an easy install since the RO was already up and running. Immediately, you will notice several things with the permeate pump. 1) Permeate pumps make some noise. They generally click or “thump” every few seconds. This happens because the wastewater from the RO builds up pressure inside the pump that is then used to push fresh (permeate) water into the storage tank. When the pressure builds and releases, you get clicking or thumping until your tank is full. 2) Your RO faucet pressure increases dramatically. As a result of the increased permeate water being forced into the storage tank, the tank pressure within the tank bladder increases and you end up with water pressure comparable to your regular faucet. The line pressure at the refrigerator & ice maker (assuming you have them all hooked together) is also the beneficiary of the increased pressure and you get full sized ice cubes again. So, why wouldn’t everybody want one of these? Well, I think most people have never heard of them. If you have, then the results speak for themselves. HOWEVER, these do make noise...especially if your RO faucet has an air gap (that little hole in the back of the faucet that inevitably leaks water out of it when the drain line gets blocked with something). With an air gap, permeate pumps get VERY NOISY. The pump action not only clicks (or thumps) under the sink, but the air gap sound created from the pump gets much louder as well. The air gap noise on my Watts Premier Pure Plus unit was so loud I actually debated on getting another permeate pump in our new house. I ended up buying a highly reviewed non-air gap RO system from Amazon and had it installed for a month in my new house. As usual, the water taste and purity was perfect and I am pleased that my ice cubes were normal sized (since the builder installed a larger RO line from my island to the fridge). I just realized how much I was missing the RO tank pressure (which equates to faster filling of water jugs & cooking pots). I went back to Amazon and found this permeate pump which said it was the newer model that makes less noise. The unit arrived in about a week (no 2-day prime shipping available for it). I watched a YouTube video for installing it on a basic 5-stage RO and had it all hooked up in about 20 mins. I’m once again in RO bliss. The water pressure in the faucet just makes me smile...no more waiting a minute to fill a normal glass with water (OK it’s not literally a minute but felt that way to me). The noise is considerably less from the pump itself. I ended up buying some u-shaped plastic clamps (Amazon search: TmallTech Big Simple Clip Clamp 2.5" Bracket Reverse Osmosis RO Membrane Housing (Pack of 3)) that hold the permeate pump to one of the RO filters so the pump is not directly mounted to the cabinet wall (like it was at my previous house). Also, since I don’t have an air gap on this RO faucet, I have no additional noise from the faucet. If my house is silent, you still hear the pump cycling the water, but it’s minimal and it’s only until the tank is full. After that, it doesn’t cycle back on until water has been used from the tank. All in all, I missed the permeate pump benefits and will never have another RO system without one. I will also make sure I don’t get an RO with an air-gap faucet either. Hopefully this review helps people.

## Frequently Bought Together

- Express Water RO5DX Reverse Osmosis Filtration NSF Certified 5 Stage RO System with Faucet and Tank – Under Sink Water Plus 4 Filters – 50 GPD, 14 x 17 x 5, White
- Express Water – 3 Year Reverse Osmosis System Replacement Filter Set – 23 Water Filters with 50 GPD RO Membrane, Carbon GAC, ACB, PAC Filters, Sediment SED Filters – 10 inch Size

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*Product available on Desertcart Vanuatu*
*Store origin: VU*
*Last updated: 2026-05-07*