Drinking Water Filter
3-stage Under Counter

The best performing water filter plus an increased capacity pre-filter.

5300 Plus under counter faucet

Get 44% faster water flow plus 200 more gallon capacity
& Bluetooth filter tracking! Shop Now

Select a faucet finish: Brushed Nickel
  • all-metal brushed nickel faucet
  • all-metal chrome faucet
  • oil rubbed bronze faucet
3-Stage Under Counter Water Filter - Brushed Nickel is rated 4.6 out of 5 by 1554.
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50% OFF 3-STAGE UNDER COUNTER SYSTEMS until Apr 30
  • MSRP: 285.70
  • Sale: 142.85

Save 50% + free shipping with Water for Life $142.85

Questions? We can help

  • 866-662-6885
  • MON–FRI: 8AM–6PM 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 15x the capacity of the leading gravity-based pitcher at only 9¢ per gallon with Water for Life.

Pure Performance

Increase Performance

Extend the life of your system. Improve effectiveness.

Three Stage System features a 20 micron pre-filter to capture rust, sediment and silt that can clog your system. Extends filter life capacity to 600 gallons!

Pure Performance

A Smarter System

The Aquasana AQ-5300 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.

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

Help & Support

Video Help

  • How to install the Claryum 3-stage water filter
  • How to replace the AQ-5300-R under counter filters

Installing the 3-stage under counter system

Replacing the 3 filters in the AQ-5300

Learn More

Read the Reviews

Rated 5 out of 5 by from Best tasting water, ever Love this new system. I have such hard water here and it's undrinkable. Now it is the best tasting water ever! Love it.
Date published: 2018-04-22
Rated 5 out of 5 by from Great tasting water. I just had this filter installed. I love it! Good quality, and the water tastes great!
Date published: 2018-04-22
Rated 5 out of 5 by from THRILLED! Couldn't be happier with our new Aquasana water filter. Tastes amazing and so pleased with the knowledge that their product works so well.
Date published: 2018-04-19
Rated 5 out of 5 by from WE LOVE OUR NEW WATER FILTRATION SYSTEM! WE ARE SO VERY HAPPY WITH OUR NEW SYSTEM AND THE WATER TASTES GREAT!!
Date published: 2018-04-16
Rated 5 out of 5 by from Very satisfied It has made our tap water smell and taste good. 123
Date published: 2018-04-10
Rated 5 out of 5 by from delicious water bought this a month ago after researching different options from aquasana, and we're very glad we did. we now have absolutely clear and delicious water, and, no doubt, clean on the most microscopic level. we had a plumbler install it, and it took about 45 minutes. at the end of the day, it has transformed our water drinking--we live on Long Island, and the shift in taste was immediate. it is actually delicious water--nothing sulfuric or cloudy about it. thank you!
Date published: 2018-04-10
Rated 5 out of 5 by from Now Clean Safe Water that tastes GOOD ! Received the product the triple filter unit directions were clear easy to follow, installation took very little time. works flawless, No problems since better than i expected.
Date published: 2018-04-03
Rated 5 out of 5 by from I see a difference I had a GE 2 stage water filter and after a few days of being cleaned, my electric kettle showed sediment build up on bottom and something floating in the water. I would need to clean the kettle with CLR every 2-3 weeks. I switched to the Aquasana 3 stage filter and it was been 3 weeks with nothing on the bottom of kettle and I do not see anything floating on the water. Clear proof this filter works well and certainly better than the GE filter.
Date published: 2018-04-03
Rated 5 out of 5 by from Great product Easy to install and the water quality is excellent!
Date published: 2018-03-28
Rated 5 out of 5 by from At last good drinking water! Since our water has a high amount of minerals, it is necessary to use a water softener. Even though the softener is set as low as possible, the water from the faucet as well as the refrigerator has a salty taste. We have been using the water filter for almost a month and are very happy!! Installation was a breeze even with additional hoses for the hot water recycling system. We have not replaced the filters yet but don't expect a problem.
Date published: 2018-03-26
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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

Can we use after market facet for kitchen sink water dispenser

Asked by: Alpal
I have no idea what you are talking about, better ask Aquasana
Answered by: organic shopper
Date published: 2018-04-16

Four days ago I asked a question regarding whether this filter would remove choliform bacteria. Other than making the question public you have not responded. I would appreciate the courtesy of a response.

Asked by: Schellde
We do not suggest using this system with well water. Typically, the best way to kill off choliform bacteria is by shocking the well. While an RO system may help with the reduction of bacteria, it is not guaranteed that the bacteria will be trapped by the membrane. Your best bet will probably be a whole home UV filter and an RO drinking filter. You may want to consult with the technician who services the well, and see what they suggest. Thank you, Aquasana Customer Support
Answered by: Aquasana Customer Support
Date published: 2018-04-06

how often do I have to change the filters for the three stage system?

Asked by: grace
We suggest replacing your filters every 6 month for optimum performance. Thank you, Aquasana Customer Support
Answered by: Aquasana Customer Support
Date published: 2018-04-08

is this the aq-5300? I dont need a sink faucet can I get it without?

Asked by: roadrunner
To order replacement parts, please give our service team a call at 866.662.6885 and we will be happy to discuss your warranty options. Thank you, Aquasana Customer Support
Answered by: Aquasana Customer Support
Date published: 2018-04-06

how does this unit deal with alkaline needs

Asked by: GDC water
Aquasana water filtration systems are not designed to alter the alkalinity of your water. While the ion exchange process may certainly help enhance the pH of your water, we can not guarantee a certain level. Thank you, Aquasana Customer Support
Answered by: Aquasana Customer Support
Date published: 2018-04-06

DOES YOUR AQUASANA AQ 5300 REMOVE MICROPLASTICS?

Asked by: JIM XXXXXXXXXXXXXXXXXXXXX
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: 2018-04-06

how much water is used in making a gallon of purified water with this system?

Asked by: Mycull
This system does not produce any waste water. So if you have a gallon of filtered water, you've only used a gallon of water. Thank you, Aquasana Customer Support
Answered by: Aquasana Customer Support
Date published: 2018-04-06

Could you let me know if your 3-stage Under Counter filter removes arsenic?

Asked by: tom200
Hi Tom! Unfortunately this system will not be sufficient for arsenic reduction. Please check out our under-counter Reverse Osmosis system as it will be better suited for your needs. https://www.aquasana.com/drinking-water-filter-systems/reverse-osmosis-claryum Thank you, Aquasana Customer Support
Answered by: Aquasana Customer Support
Date published: 2018-04-06
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