Top Rated in Under-Sink & Countertop Filtration

Compare the most helpful customer reviews of the best rated products in our Under-Sink & Countertop Filtration store. These products are shortlisted based on the overall star rating and the number of customer reviews received by each product in the store, and are refreshed regularly.

Top rated products in Under-Sink & Countertop Filtration

4.8 | 2,772 customer ratings
96% of the ratings are 4-stars or 5-stars
We have a single handle kitchen faucet and wanted to filter hot water as well as cold so I bought 2 uc-200s. Cold install went perfectly, but the side sprayer somehow vapor locked the hot until I used the sprayer. Unfortunately for me I didn't think to try using the sprayer until I had swapped hot and cold filters, fighting shutoff
        Read more
By Middle Age Guy
The UC-200 filter does not keep calcium out of our faucet. This is disappointing.

UPDATE:
Upon reviewing my comment above, the company quickly contacted me by phone. Working with the Customer Support agent, Chris, I was able to determine that the major reason for the calcium deposits was caused by the instant-on hot
        Read more
By Johnny Mirehiel
Installed easy, Worked as intended for less than 2 months then in the middle of the night cracked down the entire side and flooded the kitchen, basement, ruined several cabinets, and did several hundred dollars in damage to the basement ductwork. Thought this was the solution for us as it was too easy to install, and had numerous very
        Read more
By Shane Underwood
4.8 | 2,313 customer ratings
95% of the ratings are 4-stars or 5-stars
The APEC Top Tier 5-Stage Reverse Osmosis system delivers on it's most important function - clean, good tasting water, and it does it at great value. This is a six month review. This 5-stage system includes 1 pre-filter, 2 particulate filters, and 2 micro filters. This gives it large capacity for cleaning silty water, while providing a
        Read more
By flutterby42
"You have one on every floor?" Yes. I have three APEC RO filters, and I love them all. Let me explain:

Where I live, we have "city water", but that's really a community well. The water here is EXTREMELY hard. The last time I had it tested to size out a water softener, I was hovering around 30 grains per gallon (that's about
        Read more
By Kevin Nicholls
Purchased this from the Amazon Warehouse, so it was a very good deal for a solid system. I installed the components in cheap plastic tubs (with an alarm), in case of leaks. After 3 years of continuous use everything is dry, and that includes annual filter changes and the addition of an Aquatec ERP-500 Permeate Pump. I only wish I had
        Read more
By T Karcher
4.8 | 1,783 customer ratings
95% of the ratings are 4-stars or 5-stars
I learned about reverse osmosis water from a girlfriend who later dumped me. She’s gone, but I still have the RO water. I win.

Although I knocked some stars off for the installation being complicated, that’s really not fair because I didn’t install it. I had a plumber put it in. But I saw enough to know that there is no
        Read more
By M. Wright
I am a 60+ year old female, with an arthritic right hand in a 1931 bungalow home. Anyone who owns an old home knows there will always be the unexpected lurking when working on the house - so I went into this project anticipating a few hiccups. Since I was going to be working in the kitchen, I decided it would be a good time to put in a
        Read more
By EyeLoveGlasses
So far so good but I tested the PH in the filtered water and it showed 5!!! Not what I was expecting. I ordered this system because it supossedly adds minerals back into the water. Has anyone else have the same issue and how was it resolved? thank you.
Update: Almost 2 months later and the PH is still at 5, a bright orange color
        Read more
By Amazon Customer
4.8 | 876 customer ratings
94% of the ratings are 4-stars or 5-stars
I have wanted an RO system for awhile and this seemed the best for a reasonable price. Great water filtration, very fast faucet flow, great water conservation for RO, and easy to install. After four hours today I have it installed and I tested my tap water, my brita pitcher, and then the RO water with a TDS meter (which measures the total
        Read more
By Haywood_Jabloeme
I should start out saying that I am very picky about my water. I purchased a home a few years ago and had been using a Brita filter just to get by. It was OK. Much better than tap. But I wanted better. I did my research and landed on Home Master for reliability, ease of changing the filters and other maintenance as well as the
        Read more
By Jeffrey Niccoli
My wife and I had been spending a fortune on bottled water... not only for us but for clients that visited as well. The cost, as well as the destructive effect on the environment, was something that truly bothered us. I began to do some research on different companies that offered under the sink filtered water filtrations systems. I took
        Read more
By Michael S.
4.7 | 4,723 customer ratings
93% of the ratings are 4-stars or 5-stars
Dislikes:

1) The package was kind of heavy. I had to grunt a bit when picking it up. (Hey, I had to find SOMETHING!)

But I'm pretty critical, so I'll update this review if I find any more gripes. I guess I should include I almost wet my pants when I heard a loud snap when installing the RO membrane cartridge in
        Read more
By Steve Lowther
It all went together exactly like the installation directions, which were clear and easy to understand. My wife is a picky water drinker and her choice of water is Nestle's pure life. She dislikes some of the more expensive cliche' waters so I had some reservations about purchasing a system only to have her not like it, but for the price
        Read more
By JimM
My wife just finished installing the RCC7AK under our kitchen sink, and it took a little over an hour taking her time and watching the 15 minute youtube video while going step by step. There is literally no part of this installation you cannot do yourself, no matter your skill level. You plug in some tubings, connect a few things, and the
        Read more
By MW
4.7 | 2,004 customer ratings
92% of the ratings are 4-stars or 5-stars
I was skeptical when ordering this filter. However, after reading the reviews, I felt comfortable ordering.

I received the filter and went to Lowes to purchase the zipties and adhesive strips to attach onto the back of my refrigerator. I also needed a extra short ice maker hose. It was really easy to install following
        Read more
By KitKat
I ordered this filter over 5 years ago as a pre-filter to my refrigerator. The big advantage has been that I only had to replace the expensive internal Bosch filter three times over that same time period, so this filter pays for itself and provides more consistent water to my fridge and ice cubes. I have had absolutely no problems with
        Read more
By Marky Mark
Update:
About 30 minutes after I wrote my review, I get a call back from this company. I'm still disappointed in their service but I did get an education on filters. Apparently I needed (and expected) a Reverse Osmosis filter, which this filter is not. So I ordered something that's not useful to me. I wish the product details on
        Read more
By RichD
4.7 | 1,665 customer ratings
94% of the ratings are 4-stars or 5-stars
A lot of good descriptive reviews here, I'll add mine here but will focus on my perspective as someone living in Israel.

Israel is an arid country which in recent years made a big transition to desalination. The national water company (called "Mekorot") is using >50% desalinated water from the Mediterranean Sea
        Read more
By ronen
We have a well in our new house that has elevated arsenic (0.020) and radon (15,700). The radon is really high, the arsenic is twice the acceptable limit.

We installed this unit and had a arsenic and radon test done after the install. Our arsenic went from 0.020 to 0.0001. Well less than the 0.010 acceptable limit. Most
        Read more
By Mike
Just installed so this is based on first impressions. Will update with longer term review.

Pull up a chair- this is going to be one of my longest reviews.

First, I decided to get this system because it claims to have filters that only need to be changed once per year. Also it has almost twice the daily volume of the
        Read more
By J. Florida
4.7 | 1,527 customer ratings
94% of the ratings are 4-stars or 5-stars
I bought this to replace my WATTS Premier WP-4V RO water filter tank (and it is identical). I tested the air pressure but water came out so It means the air bladder has a hole in it. Installed and seemed fine and happy with it. It came Pre-Pressurized at 6.5 psi (yes, I bought a digital air pressure gauge)-I would return it if it is not
        Read more
By Joelle
I installed this is in a few minutes without tools. First I shut off the water supply, then I let all of the pressure out of the system by leaving the tap open. I unscrewed the existing valve from the old tank, and screwed it onto this one by hand after putting teflon tape on the threads. Done.

I changed my tank because my
        Read more
By Stonewall Thomas
We have had our iSpring RO system for 3 years and like it a lot. We lost pressure and determined it was caused by a leaking diaphragm in the tank. The replacement tank works well and fixed the problem, but I don't understand why so many tanks have to be replaced. It's just a rubber diaphragm in the tank - it's a pretty simple design.
        Read more
By Buysalot
4.7 | 1,314 customer ratings
93% of the ratings are 4-stars or 5-stars
We bought this system back in 2013, after a Kenmore system we had for only a few years became too expensive to use anymore. We paid way more for the Kenmore system, so I thought this one was too good to be true. But, we tried it out. It has been AMAZING! Our drinking water is so much better (our city is notorious for its nasty water), and
        Read more
By S. White
update: so I ran into a few small issues with it. I have to say, their customer service is PHENOMENAL. still keeping a high rating because of that, and would buy another filter from them because they back their product, which I appreciate greatly.

initial review, I'll update after awhile after owning. my old 3 stage
        Read more
By A random joe
After watching a youtube video and scanning the instructions, I tackled the under-sink install. By far the hardest was the fastening of the faucet in the back of the sink - hard to reach and no tool will easily grab the nut that needs to be tightened to ensure a solid faucet on my old flimsy stainless steel sink. Once that was tight, I
        Read more
By Fishmonger
4.7 | 1,028 customer ratings
93% of the ratings are 4-stars or 5-stars
The filter is great. The steel containers are sturdy and the filter really does clean the water better than any other system I have used. But, I had a lot of problems with the rubber smell at first (like many other reviewers). The issue is the rubber stopper and washers they include with the system. The best thing to do is to throw them
        Read more
By Enrique Glotzer
This didn't meet expectations. It was purchased for a newly-acquired family cabin along the Canadian border in northern MN for summer use by members of our family. Water to purify came from a crystal clear lake that carried a predictable risk from giardia and such. Purchased the unit with two "black Berkey" filters. Primed as
        Read more
By John Cook
The company that manufactures the Berkey filter is really scammy. Despite being so popular and having been around for so long, they are not NSF certified (which is a basic certification requiring independent analysis that your filter indeed does what it claims it does and doesn't add anything to the water). In addition, they are not sold
        Read more
By Lorax
4.7 | 858 customer ratings
92% of the ratings are 4-stars or 5-stars
High level package, definitely goes beyond my expectations. I feel that this is a detail oriented brand. The accessories are complete and the installation was quite simple. Thought it would be difficult but actually took less than 10 minutes (I'm the least handy person in my family). Put the system to use after flushing for 5 minutes. The
        Read more
By Diane
Let's start right in on the existing negative reviews. First, the majority complain this filter does not reduce Total Dissolved Solids. That is in fact correct. It is NOT designed to reduce TDS. Says so right in the ad, and right on the packaging and instructions. Only Reverse Osmosis reduces TDS. Match your expectations to the product
        Read more
By REM
This was easy enough to install with proper tools. We needed another end to attach to the faucet so we just used the original hose, it makes it extra long but that is ok. Very good value for this. Only thing I wish is I had notices the other choice next to it was for longer use and only 20 dollars more or I would have purchased that one
        Read more
By Cookeylady
4.7 | 802 customer ratings
92% of the ratings are 4-stars or 5-stars
The unit is quite stylish, perhaps too stylish to be hidden under the sink. The compact nature of the unit makes for reducing space needed to install. Mostly uses vertical space, the horizontal footprint is quite small for what it does.

I have never installed an RO system, but consider myself quite handy. The hardest part of
        Read more
By Pantano3
Love it! Great Design. Excellent Quality. Prompt Service.
 
I bought this Waterdrop RO system about two weeks ago and so far love it!! I was a bit hesitant due to the price in the first place, but after reading the reviews and calling the manufacturer, I decided to give it a try.
1. Awesome customer support. I did a lot of
        Read more
By Lujie Wang
Have had this installed for about a month now and it is working perfectly.

I have not tested the water quality, but the taste is excellent. I would like it better if it included a re-mineralizer (alkaline filter) built in because all RO water can be "flat", but if you need the minerals for taste or other reasons, you can buy
        Read more
By Aimee and Chris
4.7 | 727 customer ratings
93% of the ratings are 4-stars or 5-stars
I've had the Home Master Artesian Full Contact System for 5 years now and I still love it. I would make the purchase again without any hesitation. I live in Las Vegas where we have very hard water and the system has held up great. I frequently get compliments on the water and I love that it tastes great. I installed the unit myself with
        Read more
By lynchfreak23
My reverse osmosis system was barley trickling out water so I started searching for a replacement. The first positive that caught my eye was the one piece filter. No unscrewing the container, taking out the old filter, cleaning the container, putting the new filter in, and then screwing it back on. With Home master you plug it in and
        Read more
By 70sflowergirl
I have been using an RO system for 20 years (first with a well & now on city water) and have appreciated the quality of water, the coffee pot that runs forever without problems and the refrigerator that produces perfect ice cubes. Recently, when our old Kinetico unit failed I started to look for a replacement. I was inclined to just
        Read more
By lfholmer
4.7 | 605 customer ratings
93% of the ratings are 4-stars or 5-stars
After researching several options, I found this to be the best in both quality, build, ease of install, and value. Install in under 10 minutes. Drinking water now tastes fantastic and the flow rate/water pressure remains
        Read more
By Randolph
Let me first say.... this is rated in the top 3 of water filtration systems for 2020 by several web sites. This thing is really easy to install, took me less than 20 minutes including opening the box and getting the items laid out. I started by first placing the assembled unit under my sink in various locations.... making sure I found the
        Read more
By James K.
Before installing this, the water in our ski resort condo tasted awful in spite of a clean bill of health from the water department. I wonder if they filtered the water before they tested it! As someone who practically lives on ice for my water, juice, and Thai Iced Tea, the bad taste was (1) unpleasant and (2) made me worry about the
        Read more
By Dennis F. Galletta
4.6 | 1,874 customer ratings
91% of the ratings are 4-stars or 5-stars
I got this MK99 around 2 weeks ago, went with Frizzlife brand search and directly bought this one as my friend told me that I might want to try this filter, so yes, she got one and now I have one too. Ok, I will share for now why it’s worthy a 5 star!

Star 1, the packaging of the product is with a decent pack, not luxury but
        Read more
By Crystal
After researching for a few days and reading the reviews I decided to go with this brand, and also the replacement filter is way less than others. This filter was initially designed for under the sink hookup, but I didn't
want to hook it up to the main tap line, that means when I washed wares or cleaned the sink, I would be using
        Read more
By zac60
I almost bought a 3M Filtrete system mostly because 3M has been around almost forever and I expect so will their replacement cartridges but after calling 3M TWICE to simply try and figure out whether or not this system could hook to 1/2" water supply and not being able to get an intelligable answer, and the fact that I'm not a fan of
        Read more
By tfford
4.7 | 565 customer ratings
93% of the ratings are 4-stars or 5-stars
Having just installed this unit myself I can offer a few comments on what’s involved.

• If you intend to put this under your sink as suggested AND you have an available hole for the faucet, this would indeed be a fairly simple installation. Of course you will give up a considerable amount of undersink storage. The unit
        Read more
By danw
I'm very impressed with what I received for my money. This system was a great deal and it arrived very well packaged. I like how they didn't cheap out and provided spanner wrenches to help open and tighten the filter housings. They also provided several spare O-rings and other misc parts that help adapt the system for an under-sink
        Read more
By Paul
I had d problem with the other system that was installed in the house. I called the warranty service and was denied. So , I got online and found this system. It was the same type but from a different company also updated with more effective filters. The install was super easy and took me about an hour. The great thing about the install
        Read more
By Daniel
4.7 | 564 customer ratings
93% of the ratings are 4-stars or 5-stars
After significant research in my quest for pure, safe water and clear ice, the data and reviews on the Home Master TMHP system made my final purchase decision easy. A month after installation I’m completely satisfied and thrilled with the performance of this system.

I previously had an older GE system with the typical
        Read more
By Bill Lee
I am a firm believer of the adage "you can buy a filter or be a filter." I purchased a HydroPerfection RO unit that included the UV light and pump in 2015. Probably didn't need the UV light, but thought I would include as it didn't cost that much more and I am on a well system. I installed unit in basement which made my installation a
        Read more
By KIM A FOX
I am not very handy and I was able to install this in about 3 hours. You'll need to go buy a $10 1/2" granite drill bit from Home Depot and 4 wall anchors with screws. The screws that come with this installation kit were not big enough for my needs. Also, check your outlet under your sink. My outlet where the garbage disposal is
        Read more
By D. Morton
4.6 | 1,387 customer ratings
91% of the ratings are 4-stars or 5-stars
I received this water filter a few days back. Nice packing. I have to say that I’m not a handyman, at first I have no clue how to connect. The instruction manual is very easy to read, but just in case of the wrong installation, I got it installed also with the help of a video that I found on YOUTUBE, turns out to be pretty easy. Nice
        Read more
By Qi Li
Great filter solution! Now I did read in the description that a TDS reader will not be accurate since this filter leaves in essential vitamins unlike other filters that take them out. This filtered water read 119 and my tap water read 142. I’m not sure if this is good or if that number is still too high and if all the dangerous
        Read more
By Joe M.
This so called water filter is a total scam!!! I did a water test with a water meter tester. The tap water I tested was 330 ppm, the bottle water I tested was 24ppm, the so called frizzlife tested 334 ppm. I’am just a consumer just like u. I wish someone wrote a review like this before I bought it. Also I emailed frizzlife to let them
        Read more
By Jim Christie
4.8 | 317 customer ratings
96% of the ratings are 4-stars or 5-stars
LOVE this system! I used to buy water and have to carry around jugs of it and its so convenient now to just turn on the special tap and have fresh clean water all day every day! Shipping was super fast - next day fast - and I installed in that nite. Talk about instant gratification!

INSTALLATION:
The system is relatively
        Read more
By Thomas Leichardt
After researching for months for the right filter system to use for drinking water, this has far surpassed our expectations!!!!! My husband installed it in one afternoon, and built a small wooden cubby at the end of our cabinets by the back door to hold the filters. You can put it under the sink, but it does take up a lot of space. I
        Read more
By niki c. mihm
This water filter is just amazing. The water tastes great. My family had been buying alkaline water in plastic bottles for a long time. While the water tasted better than regular bottled water, we were unhappy that we were buying all that plastic. So we splurged (though it will pay for itself in a few months since we aren't buying plastic
        Read more
By Phyllis Davis
4.6 | 856 customer ratings
91% of the ratings are 4-stars or 5-stars
Let me start this off with saying that I am a licensed plumber. I installed the 10 stage ph+ system yesterday (the day I got it) the system was the most simple RO system I’ve ever installed (and I’ve installed dozens of these types of systems in customer homes). My only gripe would be where the mounting holes are because the top 3
        Read more
By Brent Addie
So I bought this water system for the alkalinity ,
after installing it I did a alkalinity test and it turns out that this product makes 10.0 if not better alkaline water also I used a digital PPM meter and it showed a 0.22 as far as contaminants in the water I compared this to a alkaline machine which are worth about $3,000 plus
        Read more
By MAX
The water tastes great but watching the water waste leave the ststem is enough to make me think twice. i'm not sure i can allow that much water to be wasted while i only drink a gallon or two at most. literally because of my home and sink opperation i had to put the drain outside the wall and it comes out steady and non-stop..... if i
        Read more
By jesse nelson