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

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50% OFF 2-STAGE UNDER COUNTER SYSTEMS until May 31
  • MSRP: 199.99
  • Sale: 99.99

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

Questions? We can help

  • 866-662-6885
  • MON–FRI: 8AM–8PM CDT
  • SAT: 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 décor 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 Great tasting water. Installation was simple and all needed parts came with the package. Now I have 2 filtered water systems- fridge for cold water and aquasana for room temp water.
Date published: 2020-05-24
Rated 5 out of 5 by from cleans the water well...filters are too expensive enjoy the fresh taste of this filtered water..you can tell when to change filter, water taste sour usually 6-8 months
Date published: 2020-04-29
Rated 5 out of 5 by from Love it Used my faucet sprayer hole for new aquasana faucet and then replaced the old kitchen faucet. Which lead to replacing old plumbing drains. Very pleased.
Date published: 2020-04-25
Rated 5 out of 5 by from So far so good. We replaced our older Aquasana under sink system because it was leaking badly. I hope this one hold up better. I love this filtered water.
Date published: 2020-04-21
Rated 5 out of 5 by from Great product love this set up. Installed it myself. Easy to do.
Date published: 2020-04-10
Rated 5 out of 5 by from Easy to install and great tasting water I am finding myself literally drinking twice as much water as before. It has no after taste and tastes so clean. My family is enjoying the convenience of having the water available at any time also without having to wait for the pitcher to fill up.
Date published: 2020-03-11
Rated 5 out of 5 by from Good impression We are enjoying our filter and it was fairly easy for my hsuband to install. Water tastes great and we rest easy knowing it is eliminating many of the impurities and chlorine that we wanted to avoid.
Date published: 2020-02-25
Rated 5 out of 5 by from AQUASANA A GREAT FILTER SYSTEM The AQUASANA filter is great. It was easy to install with great instructions and you can which a video on line too. The water tastes so much better than the other filter systems we have used in the past.
Date published: 2020-02-16
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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 (three months for the single-stage system) 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.

  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 for 800 gallons of filter life and a 44% increase in flow rate at .72 gallons per minute.

  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

Does the unit include the filters?

Asked by: Chlorine hater
yes but the filters need to be replaced every 6 months and they cost about 60 dollars for both
Answered by: lindaaqua
Date published: 2020-02-12

Can I order new water faucet for the two stage water filter system?

Asked by: Clean water in Chester
Yes you can by calling sales. I've done it twice because after about a year and a half the faucet leaks/drips out of the faucet-end real bad. I'm on my 3rd one. If yours is still under warranty (I think 2 yrs w/WFL subscription) the faucet kit is covered, but you have to pay the $5 shipping.
Answered by: dreager
Date published: 2020-01-15

How do I get a replacement sump for a AQ-5200.55? One of mine just broke and is now unusable. Thanks. 

Asked by: Shetty
Hello, Hello,   It appears you have several questions that would best be answered by a consultation with one of our experts over the phone.  Please call our technical support department at 866-662-6885, to discuss a potential solution for your home.    Thank you,   Aquasana Support   
Answered by: Aquasana S
Date published: 2019-12-04

Can you provide a list of installers in my area?

Asked by: OUAmy
We are the manufacturer and distributor but we do not have installation technicians in the field. We do work with a network of plumbers across the US who are familiar with and/or certified to install our systems. If you would like to know if there is anyone in your area, please reply to our email at Support@aquasana.com with your city, state, and zip code.   We look forward to hearing from you!   Thank you, Aquasana Support
Answered by: Aquasana S
Date published: 2020-01-17

I'd like to buy a 2 or 3 stage water filter for my son who lives in Amsterdam, Nederlands. I'm not sure if they have different standards there for pipes and fittings and whether you sell water filters to fit their standards. Thanks,

Asked by: Ramiz
Hello, It appears you have several questions that would best be answered by a consultation with one of our experts over the phone. Please call our sales department at 866-662-6885, options 1 and 1 to discuss a potential solution for your home. Thank you, Aquasana Support
Answered by: Aquasana S
Date published: 2019-11-07

I have already have a three stage water filter under the sink. My current water filter attached to my refrigerator ice maker. Can I hook your system to my refrigerator ice maker? thx

Asked by: Sadiqa
I wouldn't. I have a two stage under sink. When I replaced an earlier version of the two stage, I tried leaving the existing hoses and faucet, just replacing the filter assembly. The volume of water out was half what it should be, but when I replaced all the hoses and faucet everything was fine. I know this isn't a direct comparison for you, but it seems as if the units are built expressly for their original purpose. Of course, you could always experiment, as long as it would be easy to go back. We just use the filter which is inside our refrigerator. It works fine.
Answered by: SierraFred
Date published: 2019-10-31

Would this water system work on well water?

Asked by: Jane Doe1818
We have well water and have used it for a few years with no issues. 
Answered by: rdhc
Date published: 2019-10-25

Will this remove nitrates ?

Asked by: Stender
Thank you for your interest in Aquasana! The AQ-5200 system is not NSF certified for the reduction of Nitrates. For 82.40% Nitrate reduction, check out our Under Counter Reverse Osmosis System - https://www.aquasana.com/drinking-water-filter-systems/reverse-osmosis-claryum Thank you, Aquasana Customer Support
Answered by: Aquasana S
Date published: 2019-10-21

Can I use my own original kitchen faucet?

Asked by: Librarian 1502
Hello, 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. Thank you, -Aquasana Support
Answered by: Aquasana S
Date published: 2019-10-03

We love the filtration system except the faucet drips for a minute when you shut off. Is there a washer that can be replaced on these somewhere. My husband wants to take apart, but I need to know if it can be taken apart to replace a washer somewhere 1st,

Asked by: Notathome
Hello, Please call our department at 866-662-6885, to discuss a potential solution for your home. Thank you, Aquasana Support
Answered by: Aquasana S
Date published: 2019-09-23

What is the difference between the stage 2 under the counter system, and the stage 3? Than you.

Asked by: AlishaL
Hello, 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. Thank you, Aquasana Support
Answered by: Aquasana S
Date published: 2019-09-21

Will it remove calcium?

Asked by: Jim the homeowner
Hello Jim, Thank you for your question the 2-stage will not remove calcium. If you have any further questions please contact us at 866-662-6885. Thank you, -Aquasana Support
Answered by: Aquasana S
Date published: 2019-09-03

What diameter hole will the faucet cover? The existing hole in my sink is fairly large.

Asked by: Colonel 26
The round circular piece that covers the hole is just a little shy of 1 3/4” so I would think you’d be okay of the hole is 1 1/2”. 
Answered by: rdhc
Date published: 2019-11-09

I have a question: filters it to 0.5 microns or how much? And does it filter out also fluoride or I have to put some filter in addition for fluoride?

Asked by: Anu Põllusaar
Hello, Reverse osmosis is the only way to remove fluoride from your water. Our OptimH20 Reverse Osmosis system removes over 95% of fluoride from your water. Take a look, let us know if you have any questions. https://www.aquasana.com/drinking-water-filter-systems/reverse-osmosis-claryum Thank you, -Aquasana Support
Answered by: Aquasana S
Date published: 2019-08-19

Can I buy just the faucet without the system? I just want to change the faucet finish. The filtration system is great

Asked by: Laurap
Hello, 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. Thank you, -Aquasana Support
Answered by: Aquasana S
Date published: 2019-08-19

What is height of faucet on Aquasana 5200?

Asked by: Alana
Hello Alana, Thank you for contacting us. The height of the faucet is 10.5". If you have any further questions please contact us at 866-662-6885. Thank you, -Aquasana Support
Answered by: Aquasana S
Date published: 2019-08-06

does this filter out arsenic? please provide documentation

Asked by: stewyzz
Hello Stewyzz. Thank you for your question. Reverse osmosis is the only way to remove arsenic from your water. Our OptimH20 Reverse Osmosis system removes over 95% of arsenic from your water. Take a look, let us know if you have any questions. https://www.aquasana.com/drinking-water-filter-systems/reverse-osmosis-claryum If you have any further questions please contact us at 866-662-6885. Thank you, -Aquasana Support
Answered by: Aquasana S
Date published: 2019-08-06

Is the 2 stage under counter drinking water RO?

Asked by: Mar clean water
Hello, Thank you for your question. I have provided a link for our RO system down below. https://www.aquasana.com/drinking-water-filter-systems/reverse-osmosis-claryum If you have any further questions please contact us at 866-662-6885. Thank you, -Aquasana Support
Answered by: Aquasana S
Date published: 2019-07-29

Does "AQ5200, 2 stage under counter" include the replacement filters or need to buy them separately?

Asked by: seigo
The original order includes the filters, but you have to order the replacements or join the water for life. We use the water for life, which automatically ships every 6 months for replacement.
Answered by: KathyM
Date published: 2019-09-05

Right after replacing the AQ-5200 cartridges, both cold and hot water faucet valuts started leaking. Any idea or suggestion?

Asked by: Hong
Hello Thank you for contacting us! We are sorry to hear that you are experiencing an issue with your system. We certainly wish to help resolve this soon! We kindly ask to contact us directly at 866-662-6885, Monday thru Friday from 8am-6pm CST, and weekends from 9am-5pm CST. A team member will gladly provide the proper steps in order to provide a quick resolution! Thank you, Aquasana Support
Answered by: Aquasana S
Date published: 2019-07-11

where do I find how to connect whole house system and under sink system?

Asked by: Kaye
Hello, The installation instructions are available on our website, under the drinking and whole house selections. You will find them on the product page of your chosen item. - Aquasana Support
Answered by: Aquasana S
Date published: 2019-07-11

will this work for spring fed well water

Asked by: jhart
Yes, my mother has used this system with a spring and it worked very well.
Answered by: J_M_Z
Date published: 2019-06-01

Does this filter out flouride?

Asked by: Kris no nickname
No.  When I looked it over it didn’t filter out fluoride.  There are other filters that do though.
Answered by: Knewthoughts
Date published: 2019-06-01

Is this easily connectable to an existing main faucet or does it have to have its own faucet. I would like to use the filtered water for all my sink water needs, and not render my kitchen faucet useless...

Asked by: AMorr
This unit has it's own faucet. It sounds like you want what I WISH I could afford, and that's the whole house water treatment unit.
Answered by: Phibo
Date published: 2019-06-01

How many gallons does this system generate per hour?

Asked by: Deb M
Hello Deb, Thank you for your question. The AQ-5200 can provide 30 gallons per hour depending on the home and incoming pressure. The AQ-5200 has been designed with a flow rate of 0.5 gpm. If you have any further questions please contact us ay support@aquasana.com. Thank you, Aqusana Support
Answered by: Aquasana S
Date published: 2019-06-01

Will the original hot/cold water faucet work as normal with the addition of the 2-stage water filter to the cold water line?

Asked by: VanL
Yes it will!   I love my Aquasana.  
Answered by: Mark Jackson
Date published: 2019-07-13

We have well water from private well.  Does under sink filter also work using well water.

Asked by: Debbie in NC
The water comes into your sink it can be connected to the well water and filtered.
Answered by: outfishing
Date published: 2019-05-15

I understand this system reduces chlorine. Does it reduce fluoride?

Asked by: Bruce P
Hello Bruce, Thank you for your question. Fluoride removal requires special filtration through a membrane. Our Reverse Osmosis System is NSF certified to remove over 95% of fluoride in your drinking water, as well as 87 other contaminants. For more information, please visit: https://www.aquasana.com/drinking-water-filter-systems/reverse-osmosis-claryum If you have any further questions please contact us at Support@aquasana.com. Thank you, -Aquasana Support
Answered by: Aquasana S
Date published: 2019-03-11

Hi, Can I use the aq 5200 in combination with a saddle valve for 1/2 inch copper piping, will the hose connecting the filter fit the valve? We draw our water from a dug well. Thanks. Claudio

Asked by: Claudio
Hello, It appears you have several questions that would best be answered by a consultation with one of our experts over the phone. Please call our sales department at 866-662-6885, options 1 and 1 to discuss a potential solution for your home. Thank you, Aquasana Support
Answered by: Aquasana S
Date published: 2019-03-01

We have had the two stage under counter filter for a few years. Recently I hear a ticking clock type noise. What is this from, and can I correct it?

Asked by: Donna and Ken
Just installed a new 5200 2-stage filter. Pulled the battery tape out and now the filter is ticking and the red light is flashing. Called CS and they had me reverse the battery and put it back in. Solved the problem. CS also advised that in the future if we hear the ticking again it could mean a low battery.
Answered by: RichardS
Date published: 2019-03-02
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