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 4.5 out of 5 by 942.
  • y_2018, m_11, d_14, h_14
  • bvseo_bulk, prod_bvrr, vn_bulk_2.0.9
  • cp_1, bvpage1
  • co_hasreviews, tv_78, tr_864
  • loc_en_US, sid_11, prod, sort_[SortEntry(order=RATING, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_aquasanaserviceteam
  • bvseo_sdk, p_sdk, 3.2.0
  • CLOUD, getAggregateRating, 4.72ms
  • REVIEWS, PRODUCT
50% OFF COUNTERTOP WATER FILTERS until Nov 19
  • MSRP: 114.27
  • Sale: 57.13

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 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
Rated 5 out of 5 by from Impression on New Water Filter We love it. Had to find a faucet it would fit to, but once we did it was a breeze to install. Water tastes amazing and feel good knowing we don't have to buy bottles anymore.
Date published: 2018-05-15
Rated 5 out of 5 by from My Aquasana I am loving it! It looks great on my countertop too!
Date published: 2018-05-15
Rated 5 out of 5 by from No more hauling spring water around!! I really like my filtered water system. Before I would have to go get spring water which meant alot of work for me. I would have to wash the bottles which were very heavy and cumbersome. Then haul them around , to and from my home and that was exhausting. Now I just go to my faucet and turn on. The water taste great and so far it has been wonderful. The only question I have is how does it know when the filter is spent. Otherwise it was a good choice for me and my family.
Date published: 2018-05-10
Rated 5 out of 5 by from Extremely happy with change in water quality!! Easy Install.. instant results. I couldn't be happier...
Date published: 2018-05-04
Rated 5 out of 5 by from Happy The filter was easy to install. The water tastes perfect. I'm happy I changed from 5 gallon water bottles to this filter. Filling up items with water is a slow process but it is a good trade off. Money saved indeed.
Date published: 2018-04-27
Rated 5 out of 5 by from Does the job Perfect size, water taste great, easy to install. This is my second filter in 15 years, never had a problem with the old one, just decided to buy a new one since it was on sale for not much more than the cost of the filters
Date published: 2018-04-26
  • y_2018, m_11, d_14, h_14
  • bvseo_bulk, prod_bvrr, vn_bulk_2.0.9
  • cp_1, bvpage1
  • co_hasreviews, tv_78, tr_864
  • loc_en_US, sid_11, prod, sort_[SortEntry(order=RATING, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_aquasanaserviceteam
  • bvseo_sdk, p_sdk, 3.2.0
  • CLOUD, getReviews, 6.24ms
  • REVIEWS, PRODUCT

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

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
Here in So. California, we don't seem to have chlorine in our city-water supply (at least I don't smell it in the "raw" water at the outside faucet). That said, you can click the "NSF" button at the bottom right of the "aquasana.com" home page, and you'll get to a series of specifications under the "NSF/ANSI 42" testing by that outfit. There, it is claimed that the AQ 4000 series "reduces" chlorine and chloramines, for whatever that's worth. It's still registered with State of California Waterboards along with other AQ models. You might try googling "water filter comparison testing", as I did some 15(?) years ago before deciding to buy the AQ 4000 sinktop model. I don't remember where (that was 3 computers and 2 operating systems ago), but you should be able to locate a consumer product testing and comparison of various filtering systems alongside the AQ. I decided on Aquasana based on one of those, and have been using it ever since. Hope this helps ...
Answered by: Hobiwan
Date published: 2018-11-07

Hi when you have counter top filter set up can you still run hot water through it to do dishes etc. Thanks Karyn

Asked by: KaynB
We do not recommend running hot water through the filtration as it may degrade your filters prematurely.
Answered by: Aquasana Service Team
Date published: 2018-11-07

How is it hooked up to the water buy a hose or what cuz I have a special faucet and other ones haven't worked.

Asked by: D the aqusana water lover
The Counter Top system is designed to attach to your faucet with a diverter. For a short demonstration video, please go to https://player.vimeo.com/video/139268619
Answered by: Aquasana Service Team
Date published: 2018-11-07

What is the maximum temperature water this unit's filters can handle? I'd like to hook one up in my bathroom, and get warm water for washing my face. Thanks.

Asked by: Leigh
The system is not designed for hot water as it can degrade the filter media at a much faster rate. The rated temperature range is 40F - 90F degrees.
Answered by: Aquasana Service Team
Date published: 2018-11-07

To the manufacture:   please dhow evidence that it removes fluoride.

Asked by: Jen1
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 
Answered by: Aquasana Service Team
Date published: 2018-10-30

Does this work with a faucet head that pulls out?

Asked by: Question
Unfortunately, the CounterTop system is not compatible with pull out spray faucets.
Answered by: Aquasana Service Team
Date published: 2018-10-30

Does the countertop filter fluoride?

Asked by: Joanie
Thank you for your e-mail and interest in Aquasana. Flouride 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
Answered by: Aquasana Service Team
Date published: 2018-10-30

Doe this filter unit is compatible to pull down kitchen faucet?

Asked by: clean_water
Thank you for your inquiry. No, the counter top system is not compatble with pull down/out sprayers. We recommend an Under Counter system or Clean Water Machine at https://www.aquasana.com/drinking-water-filter-systems
Answered by: Aquasana Service Team
Date published: 2018-10-30
  • y_2018, m_11, d_16, h_1CST
  • bvseo_bulk, prod_bvqa, vn_bulk_2.0.9
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_132
  • loc_en_US, sid_11, prod, sort_[SortEntry(order=LAST_APPROVED_ANSWER_SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_aquasanaserviceteam
  • bvseo_sdk, p_sdk, 3.2.0
  • CLOUD, getContent, 8.41ms
  • QUESTIONS, PRODUCT