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: Oil Rubbed Bronze
  • all-metal brushed nickel faucet
  • all-metal chrome faucet
  • oil rubbed bronze faucet
2-Stage Under Counter Water Filter - Oil Rubbed Bronze is rated 4.5 out of 5 by 920.
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  • MSRP: 199.99

Save 20% + free shipping with Water for Life $159.99

Questions? We can help

  • 866-662-6885
  • MON–FRI: 8AM–7PM CST
  • SAT: 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 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 Easy Install and Tasty Water Pros: 1) Install took less than an hour (including cleaning under the sink). 2) Simple installation. 3) Compact design leaves plenty of space for other stuff under the sink. 4) Water tastes great. 5) Plenty fast flow. Cons: 1) Used Amazon Pay option at check-out, which added an extra several days to process for some reason. 2) The counter flashing for the spout is juuuuust big enough to cover the existing hole, so we had to do some precision work when tightening the fitting down to make sure there was no gap visible. They should consider providing one that's a little extra larger in diameter to make the install even easier.
Date published: 2021-01-10
Rated 5 out of 5 by from Excellent Product I have been using Aquasana products for years and am completely pleased at there water purifying 2 stage under counter filter. The faucet I currently started to drip after two years and the replacement was a breeze to install. You should be quite agile to fit under the sink and other obstacles like garbage disposals plumbing pipes make it a challenge but definitely doable.
Date published: 2021-01-03
Rated 5 out of 5 by from Well-designed systems! From beginning to end, Aquasana's products have been a pleasure to purchase. I decided to buy the 2-stage filter based on estimating the amount of water we use (two of us in a household). It does appear that every 6 months is about the right time period in which we will use most of the capacity of the filters, so I signed up for the "filters for life" automatic order program. This will be a welcome saving of time and hassle over searching for and ordering pitcher filters. The installation really was easy. It took me about an hour total, including locating tools and uninstalling a spray hose. (Because of our faucet's design, I had to leave the spray hose installed under the sink, laying in a bucket in case it leaks.) I like the improved "twist-lock" design of the new filter cartridges. In our last house, we had an older Aquasana system with threaded cartridges, which tended to get stuck. The new design is much easier to remove and install. Flow rate at the tap is good - it takes perhaps 3-4 seconds to fill a glass of water and 40 seconds to fill a tea kettle. Before buying this system, we were not using filtered water from the pitcher; we were wasting lots of tap water waiting to flush the pipes. So the new system is not only filtering more pollutants, but saving water as well.
Date published: 2020-12-30
Rated 5 out of 5 by from install Install can and should be easy.. loved the you tube video. The water connections were easy. Having a garbage disposal there wasn't. Reach to tightened the nut for the faucet was stretching myself to the limits. I unknowingly loosened a pipe while I was there... hilarity ensued.
Date published: 2020-12-23
Rated 5 out of 5 by from Nice compact unit Great unit for my mountain cabin, fits under small kitchen sink space. Local city well water tastes much better without chlorine or other contaminates. Price is right and installation was easy. One of the swivel hose connecters was difficult to tighten so replaced with one from hardware store. Water flow is a little slow, but not a problem.
Date published: 2020-12-18
Rated 5 out of 5 by from Finally my drinking water tastes good! Finally my drinking water tastes good! I wasn't sure how to install it myself so I paid my plumber to do it. It only took him about 45 minutes to install the filtration unit and the faucet. A battery is included with the filters so that you know when to replace the filters. The only con is that it says they need to be replaced every 6 months. That seems really often. The filters are very small so maybe that is why. They don't take up a lot of under counter space so I'm glad for that. I'm so glad that I invested in clean filtered drinking water.
Date published: 2020-12-17
Rated 5 out of 5 by from 2 stage filter All the parts needed to install the system were provided, making installation easy.
Date published: 2020-12-16
Rated 5 out of 5 by from Overall Impression I am absolutely amazed at the quality of the filtered water. Great product. The water is much smoother that that of my previous filter. I highly recommend this product.
Date published: 2020-12-09
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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 faucet spout rotate side to side, or is it stationary? 

Asked by: Cheryl the DIY enthusiast
Do you have a bathroom filter set also
Answered by: Cheryl gidarie
Date published: 2020-12-14

After changing the filters we has a few seconds of blue colour water. I shut the tap off, and removed the filter and inspected all looked ok, so I reassembled. Is it normal to have this happen. AQ-5200R Thanks R

Asked by: Rodney_George
Hello, We are sorry to hear you are having trouble with your filtration system. We would love to transfer this to a team specialist to provide further troubleshooting steps. Kindly email us directly at support@aquasana.com or contact us directly at 866-662-6885, Monday thru Friday from 8 am-5 pm CST. Thank you, Aquasana Customer Support
Answered by: Aquasana S
Date published: 2020-12-14

Can I use an alternate faucet with the filter that matches my sink faucet?

Asked by: HoMi
Yes. We did the same thing.
Answered by: Charbonnet
Date published: 2020-11-20

What is the flow rate (GPM) on the 2-stage under counter filter?

Asked by: Stingray Al
That is  a hard question to answer. Depends on your water pressure thats coming in to the house. Not every house is set to the same pressure. the best way to answer your question is that you should be getting between a 1 to 2 gal a min.
Answered by: Anonymous
Date published: 2020-10-28

How do I cancel my current water for life? I have moved and the Aquasana faucet must stay. We are spoiled and can't live without an Aquasana filter system. I wish to purchase a new Aquasana filter system along with the filter for life 50% sale.

Asked by: OutDoorDoug
Hello, We can cancel that for you kindly email us directly at support@aquasana.com or contact us directly at 866-662-6885, Monday thru Friday from 8am-5pm CST. Thank you, Aquasana Customer Support
Answered by: Aquasana S
Date published: 2020-10-21

Hello, I chose Aquasana AQ-5200 after research, It arrived today and I installed it. Pretty straightforward. After turning on water faucet, no water! I checked there was water going into inlet, Calling customer support, still waiting after 25 min

Asked by: Kevin San Jose
Hi- I've had one for several years, no problems as long as you use the faucet which came with the unit. It does take a few minutes to fill after you turn on the supply and open the faucet. Otherwise, just make sure the hoses are attached correctly. I think there is a video to help. Last time I changed the filters I used a plumber, since my back doesn't bend enough to get under the counter any more! He had no problem with it either. Tech support has always been good for me. Keep trying, and good luck.
Answered by: SierraFred
Date published: 2020-10-09

I been using aquasana AQ-4000 undersink for many years now and I love it, but now I have to move and I can't take it with me. I still have a lot extra filters AQ4035 left , what type of faucet I can use?

Asked by: joss
Hello, The only faucets the AQ-4000 water filtration system will not be compatible with are the 2-in-1 faucets that have a detachable sprayer at the faucet opening. The AQ-4000 will fit most standard faucets and also comes with two adapters. If your faucet happens to be a non-standard size than the hose connection or adapters that come with unit, you can take your aerator to the plumbing section at your local hardware store and have it measured. After you know the size of your aerator, contact technical support with the size and we will see if we carry the right size adapter, and we will send it to you at 866-662-6885. Thank you, Customer Support
Answered by: Aquasana S
Date published: 2020-10-03

I currently have this filter/faucet system, however the faucet has started dripping and needs to be replaced. Can the faucet be purchased separately from the filter system?

Asked by: Dorothy
Hello, Thank you for reaching out to us. Yes, we can replace the faucet. Please contact us at 866-662-6885 to place the order and help further assist. We look forward to hearing from you. Thank you, Customer Support
Answered by: Aquasana S
Date published: 2020-10-03
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