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expired Posted by phoinix | Staff • May 22, 2025
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expired Posted by phoinix | Staff • May 22, 2025

Express Water Under Sink Reverse Osmosis Alkaline Water Filtration System

+ Free Shipping

$152

$270

43% off
Amazon
93 Comments 58,108 Views
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Deal Details
Update: This popular deal is still available.

Amazon has Express Water Under Sink Reverse Osmosis Alkaline Water Filtration System w/ Faucet & Tank for $151.99. Shipping is free.

Thanks to Deal Hunter phoinix for finding this deal.

Features:
  • Reverse Osmosis Water Filter: Experience what water should taste like with the Express Water reverse osmosis water filtration system filtering up to 99. 99% of Lead, Chlorine, Fluoride, PFAs/PFOs, Calcium, Arsenic, and more
  • Alkaline Water Filter: Express Water's Alkaline Water Filter with Active Mineral Technology adds Calcium, Potassium, Magnesium, and other minerals to your water
  • 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
  • Quality : Rest easy with our 1-year on all Express Water Reverse Osmosis Water Systems. System dimensions: 17x15x5 inches, Tank dimensions: 15x12x12 inches
  • 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

Editor's Notes

Written by StrawMan86 | Staff
  • About this deal:
    • Our research indicates that this offer is $38 lower (20% savings) than the next best available price from a reputable merchant with prices starting from $189.99.
  • About this product:
    • Rating of 4.6 from over 8,300 customer reviews.
  • About this store:

Original Post

Written by phoinix | Staff
Product Info
Community Notes
About the Poster
Deal Details
Product Info
Community Notes
About the Poster
Update: This popular deal is still available.

Amazon has Express Water Under Sink Reverse Osmosis Alkaline Water Filtration System w/ Faucet & Tank for $151.99. Shipping is free.

Thanks to Deal Hunter phoinix for finding this deal.

Features:
  • Reverse Osmosis Water Filter: Experience what water should taste like with the Express Water reverse osmosis water filtration system filtering up to 99. 99% of Lead, Chlorine, Fluoride, PFAs/PFOs, Calcium, Arsenic, and more
  • Alkaline Water Filter: Express Water's Alkaline Water Filter with Active Mineral Technology adds Calcium, Potassium, Magnesium, and other minerals to your water
  • 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
  • Quality : Rest easy with our 1-year on all Express Water Reverse Osmosis Water Systems. System dimensions: 17x15x5 inches, Tank dimensions: 15x12x12 inches
  • 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

Editor's Notes

Written by StrawMan86 | Staff
  • About this deal:
    • Our research indicates that this offer is $38 lower (20% savings) than the next best available price from a reputable merchant with prices starting from $189.99.
  • About this product:
    • Rating of 4.6 from over 8,300 customer reviews.
  • About this store:

Original Post

Written by phoinix | Staff

Community Voting

Deal Score
+60
Good Deal
Visit Amazon

Price Intelligence

Model: Express Water Alkaline Reverse Osmosis Water Filtration System - 10 Stage RO Mineralizing Purifier - Mineral, pH +, Antioxidant - Under Sink Water Filter with Remineralization - 50 GDP

Deal History 

Sort: Most Recent
Post Date Sold By Sale Price Activity
06/02/25Amazon$141
2
04/15/24Home Depot$152
4
11/21/23Amazon$150
23

Current Prices

Sort: Lowest to Highest | Last Updated 6/26/2025, 02:03 AM
Sold By Sale Price
Amazon$189.99

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Top Comments

iIIuminati
Docmarmo
Spectropure has been around for a very long time, I had some of their original systems back in the early 2000s when they were $500 for pretty much the same system. Yes they make excellent systems but in this day RO systems really have become very common place and there's no reason to spend extra money on a Spectrapure. One could get one of these cheaper systems and just buy their filters when it gets time to replace. Of course just my opinion.
Jerry_W
No big difference. Test the TDS, let the data talk.

92 Comments

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May 27, 2025
3,782 Posts
Joined Jan 2012
May 27, 2025
RedElmo
May 27, 2025
3,782 Posts
Quote from iIIuminati :
https://www.amazon.com/dp/B08746M1NX

It says 7 stage. Looks like 2 filters
May 27, 2025
340 Posts
Joined Dec 2008
May 27, 2025
totalx90
May 27, 2025
340 Posts
Tech bros with 3D printers assemble
May 28, 2025
1,878 Posts
Joined Apr 2007
May 28, 2025
topcho
May 28, 2025
1,878 Posts
I can't believe this "alkaline filter" nonsense.
May 28, 2025
123 Posts
Joined Dec 2011
May 28, 2025
anonymouse22
May 28, 2025
123 Posts
Quote from rcouip :
If you have a granite countertop, is the only option for installation to drill a new hole in the countertop?
Many sinks have a hole for a soap dispenser hole which you can repurpose.
May 28, 2025
20 Posts
Joined Oct 2020
May 28, 2025
Jackie8z
May 28, 2025
20 Posts
I have a countertop expresswater at home to supply both hot and cold water. It is painful to refill and drain the water in tank (I put a pump but still extra work), any good under sink system with hot water?? My wife wants hot water function.
Pro
May 28, 2025
1,114 Posts
Joined Dec 2007
May 28, 2025
RyzenPrime
Pro
May 28, 2025
1,114 Posts
Quote from itssskyky :
in for one on the $141 version with extra filter set and no ALK filter, and got separate alkaline filters >$12 ea. Thanks OP
which alkaline filters you would recommend?
May 28, 2025
44 Posts
Joined Feb 2015
May 28, 2025
itssskyky
May 28, 2025
44 Posts
Quote from RyzenPrime :
which alkaline filters you would recommend?
Trying these: https://www.amazon.com/dp/B09QTRLPGP
Last edited by Dashey10 May 28, 2025 at 05:19 PM.

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May 29, 2025
3,077 Posts
Joined Dec 2008
May 29, 2025
clinteastwood
May 29, 2025
3,077 Posts
I don't know about this particular RO system, but under sink is usually the way to go.
Just to add, TDS levels do not indicate water safety. A water sample at 10 TDS could have more heavy metals in it than a sample at 600 TDS.
May 29, 2025
372 Posts
Joined Oct 2008
May 29, 2025
Cloud-Spinner
May 29, 2025
372 Posts
You definitely need UV. This particular deal lacking UV unit. However, they have add on UV but $212 on the same page deal.
May 29, 2025
3,077 Posts
Joined Dec 2008
May 29, 2025
clinteastwood
May 29, 2025
3,077 Posts
Quote from Cloud-Spinner :
You definitely need UV. This particular deal lacking UV unit. However, they have add on UV but $212 on the same page deal.
Why do you need UV?
May 30, 2025
372 Posts
Joined Oct 2008
May 30, 2025
Cloud-Spinner
May 30, 2025
372 Posts
Quote from clinteastwood :
Why do you need UV?

To kill all viruses, parasites, and bacteria
May 30, 2025
3,077 Posts
Joined Dec 2008
May 30, 2025
clinteastwood
May 30, 2025
3,077 Posts
Quote from Cloud-Spinner :
To kill all viruses, parasites, and bacteria
Maybe beneficial in your area, not sure. But the RO process alone is probably enough, and if you're in a city the water is treated at the plant anyways for safety, and has residual chlorine that keeps it safe.
In my city they actually use UV at the treatment plant.
Jun 1, 2025
26,269 Posts
Joined May 2006
Jun 1, 2025
namlook
Jun 1, 2025
26,269 Posts
Do any of these RO systems do a better job of handling hard water than others? I don't have room inside for a water softener and installing one outside is very expensive, but I've read that feeding these really hard city water like I have is not good to keep them functioning.
Last edited by namlook June 1, 2025 at 02:50 AM.
Jun 1, 2025
2,996 Posts
Joined Dec 2009
Jun 1, 2025
RyanMPLS
Jun 1, 2025
2,996 Posts
Quote from rcouip :
If you have a granite countertop, is the only option for installation to drill a new hole in the countertop?
Quote from Zukmeister :
pay the professional to do it. It'll cost you $100-$150 but it's worth it. One small mistake will cost you thousands of dollars and it's a nightmare
A good diamond drill bit is also like $50 if you were to do it yourself so it's not worth the headache in my opinion
I got a 5 pack of 12mm bits for $7.74 in 2018 for this RO unit. It's a little scary but easy. Made a well of water with tape around the hole. I did have to use two bits as the first became filled with the granite core. The hardest part was tightening the spigot with very little room behind the sink. Found my basin wrench about two years after install and took 30 secs to cinch it down. Reminder not to use a tool as a weight for water softener line at floor drain and forget about it!

The other thing with this Express Water is that it says no maint for the tank but flow and recharge gets very slow after a few years. Perform maint on with the pressure valves when it slows down too much - plenty of vids available for both the drilling and the tank maint.

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Jun 2, 2025
35 Posts
Joined Jan 2024
Jun 2, 2025
Aim2Learn
Jun 2, 2025
35 Posts
Quote from rcouip :
I'm not sure. I know that there isn't that much.space behind the fridge.
it doesnt take much space, just have to run a 1/4 R/O line to the back of the firdge. its like $10-$20 on amazon for the "kit" ... just search for "NSF Certified Reverse Osmosis Water Fridge Installation Kit" .... if you get someone that knows what they are doing and doesnt need the kit you can get just the 1/4 line and the T adapter and the adapter for the fridge if needed and it would be less than $10. If you dont know how to get the line to the fridge you can just get a plumber (although a cable tv installer would be cheaper) cause the main point is drilling and professionally covering up the hole) and have them run the line through the wall/floor.
Its so worth it, nothing like having R/O ice and fresh COLD r/o water from the fridge. People think its nice on the counter top, but they dont know what they are missing out on until they hook it up to the fridge. Once you hook up R/O to the fridge, you wont look back!

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