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 gallons of filter life capacity! Shop Now

Select a faucet finish: Oil Rubbed Bronze
  • all-metal brushed nickel faucet
  • all-metal chrome faucet
  • oil rubbed bronze faucet
3-Stage Under Counter Water Filter - Oil Rubbed Bronze is rated 4.5 out of 5 by 1639.
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  • MSRP: 285.70
  • Sale: 142.85

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

Questions? We can help

  • 866-662-6885
  • 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

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 Great tasting water Not as easy to install as your video, because there are plumbing pipes in the way, garbage disposer, sink, etc. However, the parts went together fairly well. One of the filter modules leaked at first and I had to call customer service to resolve the leak, but works fine now. I do wish the on/off handle on your faucet was a bit higher up though. All things considered I'm glad to have bought it.
Date published: 2020-04-22
Rated 5 out of 5 by from excellent product The product was easy to install and the brushed nickel faucet looks elegant. I'm glad for the peace of mind knowing my water for drinking and cooking is being filtered. It was an added bonus for me that the shape of the faucet makes it easy to fill a pot.
Date published: 2020-04-09
Rated 5 out of 5 by from It is verything it is advertised to be! I have had nothing but great experience with your company!
Date published: 2020-04-04
Rated 5 out of 5 by from very satisfied the product & service. Happy with product, free from contaminants, easy to install, economical and good customer service.
Date published: 2020-03-23
Rated 5 out of 5 by from Very Good Product We had a leak with the first filter unit and had to order another one. They sent the whole unit plus an extra top. These pieces were delivered more quickly than the original order. Once the replacement was in place we were good to go. Water tastes great, and, also very impressed with the water flow as we thought the water would just dribble out. Great system.
Date published: 2020-03-18
Rated 5 out of 5 by from Overall impression of aqua sans product Cool, glad i got it. Yet to see how the “Aquasana For Life” program works, but I’m sure it will be ok.
Date published: 2020-02-21
Rated 5 out of 5 by from Second impressions are better So far it is performing a whole lot better than the reverse osmosis system used previously. No wasting wasting water. The water flavor is really good- very simple to use, although there was a small leak on the first filer. After getting help from customer service the leak continued, but it was solved by exchanging last canister with first one. Works GREAT!!!! So far.... LOVE IT. Just fix the leak problem.
Date published: 2020-02-09
Rated 5 out of 5 by from Easy to install. Purist water as expected It tastes like water. It gives me ease of worry in eliminating chemicals or harmful contents in the quality of my water.
Date published: 2020-01-18
Rated 5 out of 5 by from Love our new water filter My husband installed this easily. There is a big difference in the water taste. We bought this to filter PFAS which is a very dangerous contaminant.
Date published: 2020-01-11
Rated 5 out of 5 by from Great Product - Great Price I was always complaining that "I hate water!" until this filter was installed. It has completely changed my mind about drinking water. I love drinking water now and my body is responding positively to the increased fluids. The product was relatively easy to install, is environmentally conscious and looks great!
Date published: 2019-12-30
Rated 5 out of 5 by from Awesome product! Love our new water filtration system! Great taste! We are actually drinking more water now! Super easy to install!
Date published: 2019-12-15
Rated 5 out of 5 by from Excellent When we had our kitchen of forty years remodeled, our contractor suggested that we add a bar sink. It was on this sink that we added the Aquasana three stage under counter water filter. Since we have had it installed we not only use it for drinking water but for our coffee maker and when preparing tea. As time goes on I know we will use it even more.
Date published: 2019-11-10
Rated 5 out of 5 by from Easy install great tasting water Easy install great tasting water, gives us peace of mind, and reduces out foot print!
Date published: 2019-10-18
Rated 5 out of 5 by from Great replacement for older unit Replacrd an old 2 stage GE unit. This one gives clear, clean results!
Date published: 2019-10-01
Rated 5 out of 5 by from Great tasting water We really enjoy our new water filter. The water tastes great and it's wonderful to have the dedicated faucet for our filtered water. It looks so nice. We had a one filter on the counter filter previously. It was unsightly and awkward to use. Knowing now that our drinking water is removing so many more contaminants gives us peace of mind. We are no longer buying bottled water. YAY!
Date published: 2019-09-08
Rated 5 out of 5 by from Overall satisfaction with system So, the system is going ok. My husband installed it in one afternoon. The water tastes good and has no smell.
Date published: 2019-08-22
Rated 5 out of 5 by from Easy install Easy install, removed bad taste and odor from our sub-division well(s).
Date published: 2019-08-21
Rated 5 out of 5 by from Positive Impression so far The installation was straight forward. I needed to make a small mounting plate for the sink since the hole was larger than 1 inch to fit the faucet but that was really no big deal. Everything else went as described in the instructions. So far the system seems to be working fine. The flow is a little slow, but that's to be expected since the water has to work itself through the filtering system.
Date published: 2019-08-08
Rated 5 out of 5 by from So far it is great! Water is very clean tasting, no odor. It gives me peace of mind. We had a plumber install it for us.
Date published: 2019-08-07
Rated 5 out of 5 by from Filter was as advertized My three stage filter was as advertised, unit installed easily and has provided good tasting water. No more bottled water and bagged ice.
Date published: 2019-07-28
Rated 5 out of 5 by from Under-sink water filter I am so happy to have the under-sink water filter in our master bathroom. It is great to be able to drink water, brush teeth, use the water pik all with clean filtered water. I am very happy with this filter.
Date published: 2019-07-20
Rated 5 out of 5 by from Like the looks ...works well Like new filter looks along with knowledge contaminates are being removed
Date published: 2019-07-17
Rated 5 out of 5 by from Excellent product We love the 3 stage under counter water system. It was easy to install. The water tastes clean and delicious now. We left the filtered water in a pot on the countertop for 3 days to see if it changes the taste - nothing happen, still tasted clean and delicious. We recommended this system already to family and friends.
Date published: 2019-04-13
Rated 5 out of 5 by from Love this filter We are drinking more water since we put this filter in last month. Make sure you make all the connections properly and it was a breeze to install. The water looks cloudy as you flush the water through the new filters but be patient. The water is great.
Date published: 2019-04-10
Rated 5 out of 5 by from quality water on tap Aquasana is able to give quality product at value price. they offer the block carb. filter which really is need to stop chemicals. we are drinking a lot more water, since the system has been installed.
Date published: 2019-04-02
Rated 5 out of 5 by from It's perfect My plumber installed the filter, as I was also getting a new faucet. So I can't speak to the installation process, except that he didn't have any difficulty. It's in a nice, out of the way spot under the sink. The water flows beautifully, the water spout is beautiful, and most importantly, the water tastes fantastic.
Date published: 2019-03-19
Rated 5 out of 5 by from Loving the fresh water, quite an easy install. This was on our list for years, wish i'd done it sooner. I did not use the faucet but instead ran the tank to our fridge, giving us fresh and cool water and ice. To do this I needed some extra parts from Depot, which complicated the job but it was worth it. The fact that the system uses sharkbite style connectors is great. Follow the instructions very carefully. Push HARD to get those hoses into the clamp. To get them out, if you make a mistake, watch a Youtube video on removing sharkbite connectors. it's tricky, but do it once and you get the jist.
Date published: 2019-03-10
Rated 5 out of 5 by from Great quality! Very impressive! We love our Aquasana filters! We used to own an RO but we never liked the idea of removing all minerals. The filters are just enough to remove all contaminants specially the chlorine! Great product!
Date published: 2019-02-22
Rated 5 out of 5 by from Very good system My family love the taste, safe us from using bottle water.
Date published: 2019-02-19
Rated 5 out of 5 by from Love these filters I had the 3 stage under counter filters installed on the back wall instead of on the side wall of the cabinet a week and a half ago . I think it will be easier to change filters and takes up less space. The water taste better than spring water. The faucet looks nice and I don't find the water flow slow considering it's going through 3 filters. I did put containers under the filters just in case of a leak and will buy a small water alarm at Home Depot. But am not really concerned about leaks and believe new o rings can be purchased anywhere for the filters when needed. I love these filters. Much more convenient than bottled water and take up much less space than the countertop type I used to use. Just wish floride was removed.
Date published: 2019-01-27
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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 (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

I need to know the height  & dimensions  of the faucet 

Asked by: Ttree
Thank you for contacting us. I have provided the dimensions down below. Aq-5300 Specs: height 9" width 12" depth 4-1/4" If you need further assistance please contact us at 866-662-6885. Thank you, Aquasana Support
Answered by: Aquasana S
Date published: 2020-09-10

Hi, Is it unusual for the water to come out of the faucet cloudy?

Asked by: juju
Hello, We would love to transfer this to a team specialist who is best-suited to answer any questions or concerns you may have. 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: 2020-08-25

1) I have a well will this help with sulfur smell? 2) How much water pressure do you need?

Asked by: RonJ
I'm not sure about either question. The folks at aquasana should be more qualified to answer these questions than I.
Answered by: Old pipefitter.
Date published: 2020-08-09

My wife needs the faucet to match our sink faucet next to it, is it possible for me to get a 3rd party faucet? Thank you. 

Asked by: BrianCA
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. Please contact us if you have any further questions. Best, Aquasana Customer Support 866.662.6885 Option 1 www.aquasana.com
Answered by: Aquasana S
Date published: 2020-07-27

How does this work with my dishwasher?

Asked by: Nowee
Can't or should not be used for dish washer. The volume would not be sufficient, dish washing should be done with hot water.
Answered by: Old pipefitter.
Date published: 2020-07-09

Does this filter remove fluoride ?

Asked by: Joelle
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, https://www.aquasana.com/drinking-water-filter-systems/reverse-osmosis-claryum If you have any further questions contact us at 866-662-6885. Thank you, Aquasana Customer Support
Answered by: Aquasana S
Date published: 2020-06-30

I need just 2 stage for my filter replacement which I both 6 math ago

Asked by: Leon Koltun
Hello, Please contact us at 866-662-6885 to help further assist in providing what you need. Thank you, -Aquasana Customer Support
Answered by: Aquasana S
Date published: 2020-06-30

One of my sediment pre-filters cracked. I need to purchhase a replacement.

Asked by: grp!
Thank you for reaching out to us. We kindly ask that you contact our friendly customer service representatives via phone at 866-662-6885, Monday thru Friday from 8am-5pm CST, and weekends from 9am-5pm CST. Thank you, Aquasana Support
Answered by: Aquasana S
Date published: 2020-06-29
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