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 839.
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50% OFF 2-STAGE UNDER COUNTERS WITH WATER FOR LIFE until Mar 25
  • 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 CDT
  • SAT–SUN: 9AM–5PM CDT

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 Easy to install We have enjoyed our new Aquasana water filter system. Our local water often had high chlorination levels which really affected the taste of our water. Our filtered water tastes fantastic.
Date published: 2019-02-26
Rated 5 out of 5 by from Clean water at my sink. I am enjoying the clean water in my kitchen. We now do all our coffee, tea, soup, and pasta boiling with clean water from our Aquasana filter. It was so easy to install. Just followed the directions. My wife really likes it.
Date published: 2019-02-25
Rated 5 out of 5 by from Love this filter and company We used a filter that cost 6x this price prior to buying this one and it was really not that much better so when it broke down we looked for a better solution at a better price. We've been using Aquasna for many years now. The Company has always stood behind their products. We upgraded to this new system when it came out about 3 years ago and it's super easy to change the filters. Love the water for life program as it takes the thinking out of it and the added discount makes it a no brainer. The water tastes great and we wouldn't be without it. We've referred several friends who have bought one since we got ours. :)
Date published: 2019-02-11
Rated 5 out of 5 by from So far, so good Haven't had it installed a long time but like the small faucet that allows use of the regular faucet while getting water. Have used a filter for a long time, so can't speak to a difference in taste, but definitely like the convenience of this vs a faucet mount filter that needs more frequent replacement
Date published: 2018-12-31
Rated 5 out of 5 by from Easy We replaced our previous aquasana counter water filter with this newer model. The handle works much better and the filter system is much more user friendly. We love it and it’s used A LOT between drinking water, humidifier water and now the dog has been prescribed to be on filtered water due to a kidney condition
Date published: 2018-12-30
Rated 5 out of 5 by from Aquasana filter: nice The filter init was delivered on time; fairly easy to install and is working fine. It fits into the overall scheme of the sink/counter/ kitchen very nicely.
Date published: 2018-12-23
Rated 5 out of 5 by from great tasting water two stage under counter water filter is excellent product and filters water as advertised and as recommended on many reviews. easy install.
Date published: 2018-12-05
Rated 5 out of 5 by from Overall impression of our Aquasana Our water tastes great! We love our Aquasana water filter!!
Date published: 2018-11-20
Rated 5 out of 5 by from Aquasana a very nice product. Fits perfect under my kitchen counter.Faucet looks great.Water taste wonderful ,no odor.
Date published: 2018-11-02
Rated 5 out of 5 by from Great filter system We have been using the Aquasana 2-stage filter system for over 8 years. The water quality and taste has been outstanding. We are water for life subscribers which is a good value, we receive new filters every six months at a fair price. We would always forget to replace them, now that's not a problem. Over the years they have improved the filter installation process and have made it so easy, I never have a leak. As water for life subscribers, if any part of the system fails they will replace it free of charge. The only failure I've had was the faucet. The new faucet doesn't appear to be the same quality as the old one, which was disappointing. Overall I recommend the filter system because of the water quality and taste.
Date published: 2018-09-27
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Learn More

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.

Learn More

User Q & A

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: 2019-01-22

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: 2018-12-31

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: 2019-01-22

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: 2019-02-18

the manifold of my 5200 is leaking at the input. Is the only choice a replacement. The system is almost 2 years old.

Asked by: Manfred
Manfred, Thank you for your question. We are sorry to hear that you are experiencing a leak! We certainly want to help resolve this soon. Kindly contact our service team at 866.662.6885 and a team member will be glad to provide the replacement parts needed. Thank you, Aquasana
Answered by: Aquasana Service Team
Date published: 2019-01-22

Do the filters remove silt?

Asked by: Homeowner in lava zone
We recommend a 3-stage system with pre-filter to guarantee the removal of silt and other sediments so your filters do not clog. You may view our 3-stage filters at https://www.aquasana.com/drinking-water-filter-systems
Answered by: Aquasana Service Team
Date published: 2018-12-07

Hi, I have this filter and I was hoping that it was NOT reverse osmosis...is this the case? Thanks!

Asked by: Lara
The 2-Stage Under Counter system is not Reverse Osmosis.
Answered by: Aquasana Service Team
Date published: 2018-10-02

What is the difference between the 2-stage and 3-stage systems, besides gallons filtered?

Asked by: DebD
The 3-stage system includes a pre-filter designed to catch the rust, dirt and sediment in your water resulting in longer filter life.
Answered by: Aquasana Service Team
Date published: 2018-08-29

Does the Stage 2 Under Counter filter remove plastic particles, and if so, down to what size?

Asked by: Collins
Thank you for your interest in Aquasana! 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 Customer Support
Answered by: Aquasana Customer Support
Date published: 2018-06-15

Does This filter filter out cyanotoxins?

Asked by: Marilynn
Unfortunately we do not currently have a system that has been certified to reduce cyanotoxins, however Reverse Osmosis will probably be your best bet to reduce this contaminant as it is the most thorough form of filtration we offer. Thank you, Aquasana Customer Support
Answered by: Aquasana Customer Support
Date published: 2018-06-02

does $99 special 2 stage include the filter as well and if not how much is the filter.

Asked by: slcng
Thank you for your interest in the AQ-5200 system! The filtration system will come with your first set of filter cartridges, which should provide 6 months of filtration. Let us know if you have any other questions! Thank you, Aquasana Customer Support
Answered by: Aquasana Customer Support
Date published: 2018-06-02

Does this include filter or do I need to buy separately? I know I will have to change it eventually. But for the first buy does the filter come included? 

Asked by: Naty
Yes, this is a full system ready to install and use. The filters are good for 6 months. Thank you, Aquasana Customer Support
Answered by: Aquasana Customer Support
Date published: 2018-05-11

What is the weight of this system (for shipping / transporting overseas)?

Asked by: Judd
This system weighs approximately 6 lbs Thank you, Aquasana Customer Support
Answered by: Aquasana Customer Support
Date published: 2018-05-11

Hello, we have the two stage under counter purifier. We leave home for work for about a month at a time. Is it ok for the filter to sit unused for a month without growing bacteria or mold?

Asked by: SteveYawger
Hello, It should be fine to leave the filters for a few weeks, just make sure that you flush the filters for 15-20 minutes when you return home, before you start drinking the water to make sure that you have expelled any stagnant water. Thank you, Aquasana Customer Support
Answered by: Aquasana Customer Support
Date published: 2018-05-10

Hi. I am replacing my countertops. How can I order a new faucet?

Asked by: Gina123
Please contact our service team at 866.662.6885 to discuss your warranty options. Thank you, Aquasana Customer Support
Answered by: Aquasana Customer Support
Date published: 2018-05-10

What is the height dimension of the faucet - from the base of counter top to highest point on the faucet

Asked by: Mark Daniel
Hi Mark, The faucet is 8" from the base to the high point of the faucet. Thank you, Aquasana Customer Support
Answered by: Aquasana Customer Support
Date published: 2018-05-10

Let me ask you: IF I buy the 2 replacement Filters to be changed after 6 months.... what IS the meaning of Water FOR life getting THEM in a lower Price?... 

Asked by: Pipo.
Water for Life is a contract-free, no obligation replacement cartridge auto-ship program. Sign up is free of charge and you can cancel at anytime. Water for Life ensures you get the best discounts on replacement cartridges, free shipping on Water for Life product purchases, and an extended warranty. Thank you, Aquasana Customer Support
Answered by: Aquasana Customer Support
Date published: 2018-04-06

How can we stop the shipment of replacement batteries with the filter? Its wasteful to replace every 6 months and can easily be replaced locally once it runs out. I left the same one in for over a year and had NO issues

Asked by: scottr
Please contact our service team at 866.662.6885 and a member of our Service Team will be glad to further assist with your request. Thank you, Aquasana Customer Support
Answered by: Aquasana Customer Support
Date published: 2018-04-05

I have the 2 stage system under my kitchen sink but the faucet has started leaking. I don't see a replacement faucet available on your site and can't find another online that has the 3 hoses coming from it. How do I get a replacement?

Asked by: LBHall
We currently do not offer replacement parts through our website. Please contact our service team at 866.662.6885 and a member of the team will be glad to provide further assistance. Thank you, Aquasana Customer Support
Answered by: Aquasana Customer Support
Date published: 2018-06-11

After installing my new 5200 I let the water run for several minutes to "flush" the cartridges. I still get "cloudy" water though. Is there a way to purge air from the unit which would also increase flow rate?

Asked by: WHRIII
We did not have this problem with our filter. We also had the "on the counter" model for years and did not have any issues after running the water for 10 minutes. We're filtering public water so I don't know if that makes any difference.
Answered by: cjstauffer
Date published: 2018-04-03

HOW much IS the Price of two Filters?

Asked by: Pipo.
Around $59.00 before tax , two filters and a battery
Answered by: outfishing
Date published: 2018-03-29

How is the flow? Does it dribble out like a Pur? I’m looking for a unit able to fill a 2 liter bottle fast enough to geterdone. Thank you 

Asked by: Steve 47
About 1/2 lt in 20 seconds. Yes, slow but not a dribble.
Answered by: Genem
Date published: 2018-03-14

Is the faucet designed so that it may be installed in the opening that exists for the air vent or must a separate hole be drilled for the faucet?

Asked by: Gerry N
The faucet doesn't have an air vent so I had a seperate hole drilled for the faucet.
Answered by: Martyy
Date published: 2018-02-27

I recently bought a house with the under cabinet 2 filter system. Is there an alert as to when the filter needs to be changed?

Asked by: Anne7
You will hear a low beep whe you open the faucet.  Normally every 6 months, depending on the amount of water you use.
Answered by: Ojzitro27
Date published: 2018-02-22

what is the battery for

Asked by: harry58426
The battery is installed in your unit and will meter how much water flows through or Perhaps restriction of flow due to contaminants. I don’t know how that works exactly.  There is a light that will appear after a period of time to remind you its time to replace your filter.. Your manual will tell you how to reset it I’m sure as I don’t have it in front of me right now.
Answered by: Jack trades
Date published: 2018-02-03

Is this BPB [the more toxic replacement for BPA] free?

Asked by: wonderwater
None known
Answered by: outfishing
Date published: 2018-01-31

Despite many tries my yellow filter keeps shooting out water from the join. The red was a piece of cake to change but not the yellow. I and my kitchen cupboard are soaked!

Asked by: Jak1
Jak, we are happy to hear that you found a solution! If you ever need assistance in the future, please don't hesitate to give our service team a call at 866.662.6885 and we will be happy to help troubleshoot the problem. Thank you, Aquasana
Answered by: Aquasana Customer Support
Date published: 2018-01-31

Is this item bpa free?

Asked by: Alfonso
All plastic used in Aquasana products is made of BPA free, non leeching material. Thank you, Aquasana
Answered by: Aquasana Customer Support
Date published: 2018-01-18

Installed and used 5200 for about 3 months. Now every time we turn the faucet on there is a beep sound. What is it? I tried to find a user manual but it seems like there isn't one. Can you help?

Asked by: Laogui
Answer found on the last page of the Installation Instructions.
Answered by: Phibo
Date published: 2017-12-14

I used Marketamerica pureh2o system and filters. There are some filters unused. Is your system compatible with pureh2o filters? If yes, I can buy your system and won't waste my previous filters. What is your return policy? Thanks!

Asked by: cathy123
Hello! Aquasana filtration systems are only compatible with Aquasana replacement filters. Thank you, Aquasana Customer Support
Answered by: Aquasana Customer Support
Date published: 2017-11-27
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