Drinking Water Filter
Countertop Water Filter

Instantly transforms tap water into healthy, great-tasting water with no installation or permanent fixtures.

CWM water filter

Want more versatility? Our Clean Water Machine comes with a portable pitcher or countertop dispenser. Shop Now

Countertop Water Filter - White is rated 4.6 out of 5 by 949.
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$5999 COUNTERTOP WATER FILTERS until Jan 21
  • MSRP: 114.27
  • Sale: 59.99

Save 50% + free shipping with Water for Life $57.13

Questions? We can help

  • 866-662-6885
  • MON–FRI: 8AM–6PM CST
  • SAT–SUN: 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

Easily Attaches

No permanent fixtures or installation required. Simply screw on the faucet attachment for filtered water right from your tap! No more big, bulky filters cluttering up your sink space.

Pure Performance

Convenience & Value

Fewer filter replacements. More clean, great-tasting water.

One Aquasana Claryum® filter gives you 11x the capacity of the leading gravity-based pitcher at only 11¢ per gallon with Water for Life.

How It Works

Superior Systems

Selective Claryum® Filtration

Reduces 77 contaminants while retaining beneficial minerals for optimal hydration.

Easy to install, replace & maintain

No permanent fixtures or installation required.

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.

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

Help & Support

Video Help

  • How to install the countertop faucet water filter
  • How to replace the AQ-4000-R countertop filters

Installing the countertop faucet system

Replacing the filters in the AQ-4000

Learn More

Read the Reviews

Rated 5 out of 5 by from Great tasting water, and very convenient. I really like this filter system. It was very easy to install and use.
Date published: 2019-01-12
Rated 5 out of 5 by from Love it! This filter is amazing. I have tried other filters in the past but resorted to using distilled water in which I added minerals. I am loving this filter though. I tell my husband daily how thankful I am that we purchased it. I love that it filters straight from the sink and I don’t have to worry about the chemicals being in our drinking water. The taste is great. It installs so easily and works really well!
Date published: 2019-01-12
Rated 5 out of 5 by from Cleanest tasting water EVER! Super easy installation -- only change filter every 6 months, and they automatically send it to me -- no more keeping track of when it's time to change filter. I love that it clears out so many contaminants - including pharmaceuticals - which most people are NOT aware of as being a problem in tap water
Date published: 2019-01-08
Rated 5 out of 5 by from Overall impression of new Aquasana Water filter This is the B E S T product one could purchase for the value!!! The water tastes great!!! Better than (and much cheaper) purchasing bottled h2o!!! I am so glad I found this company on line. Was skeptical at first, but now, would NEVER puchase a Britta or PUR water filter again!!!!
Date published: 2019-01-02
Rated 5 out of 5 by from I love the convenience I’ve used Aquasana filters for many years And love the taste. I feel confident that the water I’m drinking is safe and love the fact that my filter eliminates the need for using plastics. I did have to go to the hardware store to get an adapter that would fit my faucet, but otherwise installation was very easy and I did it myself .Great customer service!
Date published: 2018-12-30
Rated 5 out of 5 by from Excellent. Easy to use, good tasting water, highly recommend.
Date published: 2018-12-23
Rated 5 out of 5 by from Won’t ever go back Installation was easy and my water tastes amazing now I can’t believe I was drinking tap water before!!
Date published: 2018-11-11
Rated 5 out of 5 by from Very Pleased From the very first glass, I could tell the difference. It is so good to know that I am getting healthy, clean water that benefits my overall health. Being on a fixed income, I needed to find a low cost solution to obtaining healthy water, and Aquasana had exactly what I needed. It took advantage of the water that I already had, so I didn't have to buy water or a dispenser. I am so thankful to have found out about this, and highly recommend it to everyone.
Date published: 2018-10-23
Rated 5 out of 5 by from It does what you want it to do I have been a customer for at least 4 years, and my parents even longer. I must say, I truly like the job this filtration system does. And I have attached a picture to prove it. The filter on the right is the first filter the water enters through. Then it goes into the chamber with the filter on the left. This amazes me, and has made me even more of a loyal customer.
Date published: 2018-09-22
Rated 5 out of 5 by from I've loved this filter and company for 10 years. Nobody's paying me to write this. I've been a customer for about 10 years and have used multiple different filter systems based on the different sinks in my various apartments. These filters are just amazing. Pure, clean water. All other water tastes gross after this. And the support is unlike any I've ever encountered. Numerous times I've called them up to say "Hey this is leaking" or "I can't thread the thing onto the faucet" or anything, and they immediately mail me a new part that I need, or even the whole system again! Promptly and no questions asked. VERY helpful people. I've recommended them to everyone who ever asks me about water.
Date published: 2018-05-21
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Learn More

Aquasana FAQs

  1. Do I have to pay for a plumber to install the system?

    Our countertop drinking water filter system is 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 450 gallons, whichever comes first. Replacement filters cost $59.99, 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.

  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?

    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 AQ-4035 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. Which filter system should I get?

    The countertop system is perfect for renters because it does not require a new hole in the counter. To install an under counter system, you can remove the existing sprayer or soap dispenser in your rental 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.

  6. What size adapters do you send with the countertop system (for the diverter hose)?

    13/16 and 15/16 male.

  7. What size is the chrome collar on the countertop system (on the diverter hose)?

    55/64-27 female.

  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. How do I know if an Aquasana system will be compatible with my faucet?

    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.

Learn More

User Q & A

What is the shelf life of the replacement filters? My family drinks a lot of water. So much so I believe we will go beyond 450 gallons before 6 months. So I want to have extra filters on hand but want to know how long they will last unopened.

Asked by: Stephylace
Hello, Thank you for your question. Our filters are made out of coconut shell carbon and are activated with water. The filters do not have a shelf life and can be used at anytime. We just recommend to keep the filters stored in a cool, dry place. Thank you, Aquasana Support
Answered by: Aquasana S
Date published: 2019-01-16

Can your countertop water filter be used with a salt based ion exchange water softener?

Asked by: Aurelio
Hello, Thank you for your question. Yes our Aquasana counter top can be used with an ion exchange water softener. However, kindly keep in mind the system will not help remove salt from your water. If you have any further questions please contact us Toll Free 866-662-6885. Thank you, Aquasana Support
Answered by: Aquasana S
Date published: 2019-01-15

How often, on average, do you have to replace the filters? ie. If I drink 150 ounces per day, how long would you expect the filters to last?

Asked by: Su Z Q
Hello, Thank you for your question. We suggest replacing the filters in this system every 6 months. Each set of filters will cost $59.99 (or 50.99 if you opt into our auto ship program). If you have any futher questions please contact us at Toll Free 866-662-6885. Thank you, Aquasana Support
Answered by: Aquasana S
Date published: 2019-01-15

Does Aquasana notify when it's time to replace filters? Thank you.

Asked by: Vavi
I have auto-ship for replacements. They notify when they are shipping them.
Answered by: Raye
Date published: 2019-01-15

Can you switch from filtered to non-filtered tap water for washing dishes?

Asked by: CSG2
yes instructions in description
Answered by: sosewlinda
Date published: 2019-01-06

Why are some customers saying this filter does not filter chlorine and chloramines? I saw someone on youtube saying the same thing damning Dr. Mercola for selling your products. What is the truth of all this?

Asked by: Afua
Hello - the performance safety data sheet is linked right on the product page. It clearly shows a 97%+ reduction in chloramines. We've used Aquasana filters to reduce chloramines in our tapwater for over a year with great success. A family member has very severe reactions to chloramine exposure and the Aquasana filters have reduced it to almost nil. We LOVE Aquasana.
Answered by: Bobbi22
Date published: 2018-12-31

How long are the hoses?

Asked by: Greg_M
From the outside of the filter unit to the faucet connector, it's 28 inches (give or take a quarter inch) by my measure.
Answered by: Hobiwan
Date published: 2018-12-30

Can the undercounted filters be used in an apartment? Or are they a permanent fixture?

Asked by: Margo
Can be used in apartments. These filters easily screw onto the water spout for the water to release, runs through plastic tubes and holds onto the main white holder where the filters are held sit on the counter.
Answered by: pocomojo
Date published: 2018-12-20
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