Drinking Water Filter
2-stage Under Counter

Designed to be the best performing drinking water filter on the market.

5300 water filter

Get 100 gallons more plus a pre-filter with our 3-stage filter Shop Now

Select a faucet finish: Brushed Nickel
  • all-metal brushed nickel faucet
  • all-metal chrome faucet
  • oil rubbed bronze faucet
2-Stage Under Counter Water Filter - Brushed Nickel is rated 4.5 out of 5 by 835.
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50% OFF 2-STAGE UNDER COUNTERS WITH WATER FOR LIFE until Jan 21
  • MSRP: 199.99
  • Sale: 129.99

Save 50% + free shipping with Water for Life $99.99

Questions? We can help

  • 866-662-6885
  • MON–FRI: 8AM–6PM CST
  • SAT–SUN: 9AM–5PM CST

Whole Health

Ultimate Purity*

Instantly transform ordinary tap water into clean, extraordinary water.

NSF Certified Claryum® filtration technology independently tested and proven to remove over 97% of chlorine and chloramines. Also reduces:

  • Heavy metals like lead and mercury
  • Chlorine resistant cysts like giardia and cryptosporidium
  • Organic chemicals like herbicides, pesticides and VOCs
  • Pharmaceuticals like estrone and ibuprofen

For a complete list of contaminants reduced please see our Performance Data Sheet.

Aquasana filters 10 times more contaminants

Whole Health

Ultra Delicious

Claryum®'s selective filtration technology retains naturally occurring beneficial minerals in your water like Calcium, Potassium and Magnesium for healthier, more delicious water!

Whole Health

Eco Friendly

Designed with the environment in mind! Intelligent system design reduces plastic waste by minimizing disposable plastic parts.

Pure Performance

Claryum® Technology

Activated Carbon Reduces pharmaceuticals, herbicides, pesticides, VOCs and MTBE.

Catalytic Carbon Targets chlorine and chloramines.

Ion-Exchange Filters heavy metals like lead and mercury.

Absolute Sub-Micron Mechanical Filtration Captures asbestos and chlorine resistant cysts like cryptosporidium and giardia.

The result: 10x more contaminants reduced than the leading pitcher plus healthy minerals retained for purely delicious filtered water.

Pure Performance

Easiest filter Replacement

Replacements engineered for ease. No need to disconnect hoses or water lines. Eco-friendly filter housing easily twists off so replacing your filters is a snap!

Pure Performance

Convenience & Value

Fewer filter replacements. More clean, great-tasting water.

One Aquasana Claryum® filter gives you 12x the capacity of the leading gravity-based pitcher at only 10¢ per gallon with Water for Life.

Pure Performance

A Smarter System

The Aquasana AQ-5200 alerts you when it's time to change your filters. No more guessing if and when you need to replace your old filters.

Pure Performance

Stylish
Designer Faucet

Match your kitchen d├ęcor with a designer faucet featuring all metal construction.

How It Works

Superior Filtration

Selective Claryum® Filtration

Reduces 77 contaminants while retaining beneficial minerals for optimal hydration.

Easy to install, replace & maintain

Filter lasts up to 6 months and features easy twist-off design.

certified by NSF

NSF Certified

Full system tested and certified to NSF/ANSI Standards 42, 53, 401 + P473 for the claims specified on the Performance Data Sheet.

  • 500 gallons
  • 6 month filter life
  • 1 year warranty
  • 90 day guarantee

Help & Support

Video Help

  • How to install the 2-stage under counter system
  • How to replace the 3 AQ-5200 under counter filters

Installing the 2-stage water filter

Replacing the AQ-5200's filters

Learn More

Read the Reviews

Rated 5 out of 5 by from Better Than Expected We bought this system with a bit of skepticism - we hadn't heard of Aquasana until we started shopping for an under-counter filter system, and the price was very cheap compared to other systems we were looking at. We figured we'd get what we paid for, but I have to say this system is great. We're now five years in and we've never had a leak, the system works perfectly and changing the filters is pretty easy. The water tastes great, markedly better than the tap. The filters are pricey but not outrageous. We are glad to have found Aquasana and have purchased their other products for family members, who are also impressed.
Date published: 2018-05-23
Rated 5 out of 5 by from Great water! We have had our Aquasana about two weeks now. We love it! The water taste great, the installation was a breeze and it shipped to us very quickly. I installed it myself - just follow the directions! It was a great addition to our kitchen.
Date published: 2018-05-15
Rated 5 out of 5 by from two stage filter The filter arrived promptly and was easy to install. We're enjoying all of benefits of having this filter in our house.
Date published: 2018-05-10
Rated 5 out of 5 by from Significant Improvement Over Previous Model The model was easy to install. Filter change is simple and easy. Flow rate is higher than the previous model. Water taste and quality is always very good. Aquasana is the best system I have ever used.
Date published: 2018-05-07
Rated 5 out of 5 by from Easy to install, great performance value Easy to install and looks great! This is my third Aquasana product in ten years and very happy with the performance. A little worried with the filter alarm as my water is quite good a;d I usually get more than six months performance on a set of filters. Hope that thing is not buzzing at six months.
Date published: 2018-05-04
Rated 5 out of 5 by from Very pleased Great taste and easy installation. Overall very happy and will definitely recommend it.
Date published: 2018-05-01
Rated 5 out of 5 by from THE BEST SOLUTION IN FILTERS. THE INSTALATION WAS GREAT AND EASY. ITS USE WONDERFUL AND THE TASTE OF WATER GORGEOUS. THANKS AQUASANA.
Date published: 2018-04-23
Rated 5 out of 5 by from Just like advertised! 2-stage system was simple to install even for the non-plumber like myself. Water is definitely better tasting than the straight city water. Amazing improvement
Date published: 2018-04-22
Rated 5 out of 5 by from Great product! I bought this product recently and I’m very happy about it
Date published: 2018-04-22
Rated 5 out of 5 by from Water taste great! Unit was easy to install after watching the online instruction video. Good value for the money.
Date published: 2018-04-22
Rated 5 out of 5 by from Excellent! My grandson installed it for us and we are happy with it. It replaces the filter system that was part of our old refrigerator.
Date published: 2018-04-13
Rated 5 out of 5 by from Water Taste Great My husband recently installed the under counter filter system in this house. Wish we had done this before now. Had it in a previous home. Water tastes great and the convenience of filling up pots with filtered water is easy and economical.
Date published: 2018-04-12
Rated 5 out of 5 by from Very Happy Water for Life customer! I have owned both on counter older Claryum systems and a few under the counter 2-stage systems(different houses) Other than a leaky older model pre-2007, these things have been fantastic. (Aquasana replaced that unit for me with newer tubes) My family is very sensitive to taste and smell despite living in three different house/towns with different treated water (municipal, town aquifer, and reservoir), and prior to Aquasana use we could detect chlorine. The children use a counter model for teeth brushing and the kitchen we use for drinking water and cooking. We have been Water for Life customers since about 2008.
Date published: 2018-04-09
Rated 5 out of 5 by from Great Unit This new 2 Stage Unit is just what I was hoping for a big improvement of my older model! The customer service people at Aquasanna are the best, answering and satisfying any and all of my concerns. Just a great unit that I would highly recommend.
Date published: 2018-04-07
Rated 5 out of 5 by from Bought for my son as a birthday gift My son really likes the water in our home, we have a Aquasana Whole House System and thought he would like to have the same GREAT tasting water we enjoy.
Date published: 2018-04-05
Rated 5 out of 5 by from Great Taste Included Been using this filter along with the Water-For-Life subscription since at least 2007. Not only does the filter do a great job and the water tastes great but Aquasana also has great customer service. After about 4-5 years of service the original mounting base developed a small crack and leaked. A call to customer support got me a new redesigned unit along with new filters for the new design, all within just a couple days of the problem. Thanks Aquasana, highly recommend your products and service.
Date published: 2018-04-01
Rated 5 out of 5 by from Water system I love the new system, we had the container, and it leaked.
Date published: 2018-03-23
Rated 5 out of 5 by from A smooth water system While the water is the same as that provided by an earlier model that I had, this product operates more smoothly, shuts off more completely, and has slightly better flow than its predecessor. I did higher a plumber to install -- seemed much too difficult to do myself. I'm hoping it will not leak, which is why I replaced my old Aquasana filter
Date published: 2018-03-15
Rated 5 out of 5 by from New filter. We have used the two stage filter for years and love it but the old two stage was hard to change the filter in the csase. This new one is easy but the water does not taste quite as good.
Date published: 2018-03-14
Rated 5 out of 5 by from Sweet round water! No flat taste! I do appreciate the taste of the water after being without a filter for months. Not being under pressure relieves my mind as I had another brand burst and flood the house! I had a plumber install the unit.
Date published: 2018-03-10
Rated 5 out of 5 by from simple operation and easy to install replacing an older aquasana two filter system,one that operated for over 5 years
Date published: 2018-02-21
Rated 5 out of 5 by from NO MORE CHLORENE TASTE !! Our city water has a bad chlorine taste most of the time and this filter has removed it. We have hooked it up to our fridge water/ice dispenser as well as the supplied tap and are very happy abut our better tasting and safer water.
Date published: 2018-02-20
Rated 5 out of 5 by from Good filter My previous Aquasana filter had lasted 10 years and I loved it. My new filter was very easy to install and I could not be more pleased. The water tastes great when compared to the tap water.
Date published: 2018-02-19
Rated 5 out of 5 by from 2-stage Under Counter Water Filter I bought this about a month ago and it is great! It makes the water taste delicious. My husband installed it with ease by the instructions and the video. Thank you Aquasana!
Date published: 2018-02-17
Rated 5 out of 5 by from 2 Stage system I love it so much I bought one for the entire family!
Date published: 2018-02-16
Rated 5 out of 5 by from Love it! We installed this during our kitchen remodel and we're so glad we did! I love having a separate faucet for filtered water. I can be filling my sink for washing dishes with the regular faucet and replenish the water in the coffee maker at the same time with filtered water. We also purchased the glass bottles to keep filtered drinking water in the refrigerator at all times. In addition, we love the auto-ship feature for the replacement filters. No need to worry about anything!
Date published: 2018-02-16
Rated 5 out of 5 by from Small and easo I have had one of these for a couple of years. I bought one for each of my boys. It’s not a bad installation, doesn’t take up a lot of space, and an easy filter replacement. But you need to add a gift option for owners that want to gift their children. We shouldn’t need the lifetime filter option to get the Lower price. I waited for a sale. Where else would you buy a filter?
Date published: 2018-02-16
Rated 5 out of 5 by from No dripping We like this new water filter very much and wished it was there when we first bought the other filter. This filter has none of the problems of the other style which dripped andthe lever got stuck. So we are 100% satisfied.
Date published: 2018-02-14
Rated 5 out of 5 by from actually shuts of--no dripping This is replacement for older model of aquasana that had to pull out hoses to change filters. That model did not shut off completely like this one.
Date published: 2018-02-13
Rated 5 out of 5 by from Easy Installation I'm very pleased with this filtration system. Simple easy installation. However, the most important aspect is the taste of the water, which is very good. Happy with this product.
Date published: 2018-02-12
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Aquasana FAQs

  1. Do I have to pay for a plumber to install the system?

    Our under counter drinking water filter systems are very easy to install, and it only takes a few minutes to do; no plumber is necessary. If you have any questions or need assistance, our technical support representatives at 866-662-6885 can walk you through the installation process.

  2. How often do I have to replace the cartridges and how much do they cost?

    We recommend replacing the cartridges after six months or the specified gallon capacity to prevent the growth of bacteria in the system. The AQ-5100 Single Stage has a capacity of 200 gallons, the AQ-5200 Two-Stage has a capacity of 500 gallons, the AQ-5300 Three-Stage has a capacity of 600 gallons and the AQ-5300+ Three-Stage has a capacity of 800 gallons. Replacement filters cost $29.99 for the AQ-5100, $59.99 for the AQ-5200, $64.99 for the AQ-5300 or $79.99 for the AQ-5300+, but you can save 15%, get free shipping, and extend your product warranty by signing up for our no-contract auto-ship filter replacement program, Water for Life. The performance indicating device on the AQ-5200, AQ-5300 and AQ-5300+ systems will sound a beeping alarm and flash red when it is time to change your cartridges. The AQ-5300+ also contains Bluetooth connectivity so you can download our iPhone App and get alerts for when it is time to change your cartridges and even order new replacements straight from the App!

  3. Is this purified water?

    No, and actually, purified water is not as healthy as filtered water. Purified water undergoes reverse osmosis or distillation, which strip everything out of your water - not only the contaminants, but also the healthy, natural minerals. Our system uses selective filtration designed to reduce contaminants from the water and leave in the natural healthy minerals like calcium, potassium, and magnesium.

  4. How do I recycle the replacement filters?

    We have designed this system to minimize the environmental impact of our replacement elements, which are over 95% biodegradable carbon. Our company will recycle the filters for you, but we do not cover the shipping cost to return the filters back to us. In reality, the environmental impact of shipping the filters back to us outweighs the good of recycling. To recycle the drinking filters yourself, remove the ends of the filters, recycle the plastic parts (which are appropriately numbered) and put the carbon either in your compost pile or garden (carbon is good for plant life), or just throw it out (since the carbon degrades quickly, and is a positive component in a landfill).

  5. I'm a renter, so I can't drill or modify the plumbing. What should I do?

    To install an under counter system, you can remove the existing sprayer or soap dispenser on your sink and install our faucet in its place. This option will not damage or permanently modify your plumbing. When you move out, you can easily remove the system and reconnect your plumbing back to normal. If you do not have an existing hole in your sink from a sprayer or soap dispenser, we also have a countertop drinking water filter that conveniently screws on to most kitchen faucets.

  6. What is the size of the brass T-fitting for under counter and premium under counter unit?

    The most common size is 3/8" which originally comes with the system purchase. In rare cases some customers may need a 1/2" T-fitting which is sold separately and is available for purchase through technical support.

  7. What size hole do I need in my sink for the under counter and premium under counter systems?

    The faucet that is included with our systems requires a 1/2" hole.

  8. What does TDS mean?

    TDS is the acronym for Total Dissolved Solids, the amount of dissolved minerals and metals present in water. TDS meters tell you the concentration of dissolved minerals and metals, but are not an accurate measurement for contamination. Aquasana products reduce and remove harmful TDS like lead, but selectively retain or replace healthy dissolved solids like calcium, magnesium, and potassium.

  9. What is BPA? And why are people concerned about it?

    BPA stands for Bisphenol-A, a contaminant found in most plastics. BPA can adversely affect your health if consumed at high levels. Aquasana drinking systems do not contain BPA, and our filtration process reduces existing BPA.

  10. Does having hard water mean it is contaminated?

    Hard water is more of a nuisance than a health risk, and is not necessarily contaminated. Most water sources in the USA are considered hard. Hard water is generally safe to drink, after it has been properly treated.

  11. What is soft water, and is it safe to drink?

    Having soft water just means you have a lower concentration of dissolved minerals in the water (primarily calcium and magnesium). Soft water does not mean clean water. Your water can be soft and still contain contaminants.

  12. What is selective filtration, and how do Aquasana systems filter drinking water?

    Selective filtration is the process of sub-micron filtration, micron filtration, adsorption and ion exchange, all of which selectively reduces chemicals, heavy particulates and most dangerous heavy metals from the water while maintaining healthy minerals like calcium, magnesium and potassium.

  13. What is the difference between the single-stage, 2-stage and 3-stage under counter systems?

    All of our drinking water systems use the same Aquasana Claryum® filtration technology. The single-stage system lasts 6 months or 200 gallons before the cartridges need to be replaced. Our 2- Stage system has a higher capacity than the single-stage, giving you 6 months or 500 gallons of clean, filtered water. The 3-Stage system includes a 20 micron pre-filter before the two Aquasana Claryum® filters. This pre-filter increases the capacity of the system from 500 gallons to 600 gallons. In addition, it improves flow rate in high sediment areas. The 3-Stage Max Flow system adds even more capacity to 800 gallons, a 44% increase in flow rate at .72 gallons per minute and Bluetooth connectivity for filter tracking.

  14. I have an existing side faucet from a previous system. Can I use that with my new Aquasana water filter?

    We recommend that you use the faucet provided. We have extensively tested the system with the faucets included. The faucets are NSF Certified to have no lead content. In addition, they will not impart any unwanted chemicals into your water. If you choose to use another faucet, we recommend that you have a plumber install the system to ensure no leakage occurs. We also recommend that you install an NSF Certified faucet to ensure the health benefits of your new Aquasana water filter.

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User Q & A

I have under then counter AQ5200 - I accidentally inserted the the supply line into the out port, got stock and damaged the sleeve. How can I get a replacement?

Asked by: NENE
Hello, Im sorry to hear that you are having trouble with your filtration system. We certainly want to help resolve this as soon as possible. Please contact us at Toll free 866-662-6885 to help further assist. Thank you, Aquasana Support
Answered by: Aquasana S
Date published: 2019-01-14

What is the smallest size particle ( in microns) that the two-stage under-counter filter will remove?

Asked by: Steverbeaver
Hello, Thank you for your question. Microplastics are small plastic particles in the environment. While there is some contention over their size, the U.S. National Oceanic & Atmospheric Administration classifies microplastics as less than 5 mm in diameter. They can come from a variety of sources, including cosmetics, clothing, and industrial processes. 5mm = 5000 microns. Aquasana drinking filters are certified by the NSF to remove contaminants down to 0.5 microns, and the Reverse Osmosis system reduces to .001 microns. However, while our filters remove many of the known contaminants that make up various microplastics, our systems have not been certified specifically for the term “microplastics". Thank you, Aquasana Support
Answered by: Aquasana S
Date published: 2019-01-14

I am needing the replacement filters for the aquasana Claryum 2 stage under the sink. Help please

Asked by: parkpost
It took less than 10’ to replace the filters simply following the instructions in the replacement filter package. I ordered the filter through Amazon. 
Answered by: Tien
Date published: 2019-01-14

I have a two stage sink filter. The faucet has developed a very slow drip and I was wondering if you sold the faucet by itself. If not, can you tell me the brand and model so I can purchase a kit to rebuild it?

Asked by: Chrisco
I would call them and tell them you love the product but it started to leak and ask for a free one.
Answered by: Knewthoughts
Date published: 2019-01-06

Hi I have a two stage under counter filter. I recently read that water used in a neti pot should be sterilized or filtered through an absolute pore size of 1 micron or less. Does the the two-stage filter remove amoebas from tap water? Thanks!

Asked by: christo
Use distilled water way better and better for you and your nose. Has a higher PH 9.6 to 10 or higher.
Answered by: webber
Date published: 2018-12-19

How many gallons a day does this filter?

Asked by: RARA
I guess as much as you want it to. You turn it on when you want water - it fills up a container quickly. It fills up a gallon container in a few minutes.
Answered by: cjstauffer
Date published: 2018-12-09

Have used the two stage for a few years.After a month or so, there is a black substance that forms that slowly blocks the spout. What is it, and why does this happen?

Asked by: tomh
The buildup coming out of the faucet is airborne bacteria that is making its way into the faucet from the spout because the chlorine is stripped out of the water. What you can do is pull from the neck of the faucet up (it will slide out of the base), fill a baking sheet with half water and half vinegar and soak the faucet overnight. Flush thoroughly afterward and this will clean any bacteria inside the faucet. The faucet will slide back in and lock into the base.
Answered by: Aquasana Service Team
Date published: 2018-11-16

Only 3rd filter change and yellow filter leaks. I've assembled with and without filter inside and upper connection leaks

Asked by: Vinny Frenchette
Vinny, Thank you for your question. We would like this inquiry to be handled by a Tech Specialist. Please contact our team at 866.662.6885 or email support@aquasana.com for assistance. Thank you, Aquasana
Answered by: Aquasana Service Team
Date published: 2018-11-06
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