UNDER SINK WATER FILTERS

Drink with confidence.
Our award-winning under sink water filters remove up to 99% of 88 contaminants to instantly transform ordinary tap water into clean, healthy water.
Select where you want filter
UP TO 55% OFF UNDER SINK SYSTEMS - LIMITED TIME!
Faucet Finish: Brushed Nickel
Brushed Nickel Chrome Oil Rubbed Bronze

SALE PRICE $224.99 $499.99 MSRP
Water For Life Price
$224.99 55% OFF + Free Shipping!
Combines Claryum® and reverse osmosis technology to remove 88 contaminants including fluoride and arsenic.
55% OFF REVERSE OSMOSIS SYSTEMS
Faucet Finish: Brushed Nickel
Brushed Nickel Chrome Oil Rubbed Bronze

SALE PRICE $199.99 $449.99 MSRP
Water For Life Price
$199.99 55% OFF + Free Shipping!
Remove up to 99% of 77 contaminants, plus sediment. Now with 44% faster water flow for ultimate hydration.
55% OFF 3-STAGE MAX FLOW SYSTEMS
Top Rated
Faucet Finish: Brushed Nickel
Brushed Nickel Chrome Oil Rubbed Bronze

SALE PRICE $164.99 $349.99 MSRP
Water For Life Price
$164.99 53% OFF + Free Shipping!
Immediate access to clean, healthy water. 77 contaminants reduced, plus a Pre-Filter to tackle sediment and rust.
53% OFF 3-STAGE UNDER SINK SYSTEMS
Faucet Finish: Brushed Nickel
Brushed Nickel Chrome Oil Rubbed Bronze

SALE PRICE $124.99 $249.99 MSRP
Water For Life Price
$124.99 50% OFF + Free Shipping!
Reduce 77 contaminants and instantly transform ordinary tap water into clean, extraordinary water.
50% OFF 2-STAGE UNDER SINK SYSTEMS
Patented Claryum® Technology = Healthy, Delicious Water
Our independently-certified Claryum® filtration removes the most contaminants while retaining naturally-occurring beneficial minerals to turn ordinary tap water into extraordinary water.
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PEACE OF MIND
Ion exchange and sub-micron filtration tackle heavy metals like lead and mercury, along with asbestos and cysts.
Activated carbon removes pharmaceuticals, herbicides, pesticides, PFOA/PFAS, VOCs, and more.
Catalytic carbon filters chlorine and chloramines from the water you drink and the air you breathe.
Selective filtration retains healthy minerals like calcium, magnesium, and potassium for purely delicious filtered water.
See the full list of contaminants filtered
Replacements
Replacements
Replace your filters regularly to keep clean, healthy water flowing.
WATER FOR LIFE®
Replacement filters auto-delivered to you — for less.
No contract, 15% OFF filter replacement, an extended warranty, and free shipping. That's Water for Life®.
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Don't just take our word for it
I am extremely happy with the product. Thank you for taking the time to create something that truly is beneficial to everyone. There is an extreme difference between my Aquasana water and my regular water. The Aquasana water is the clearest, most crisp and clean water I have ever had!!
PRC143 - FLORIDA
The filter system is providing exceptional quality water. No need for bottled water anymore. This is truly a great product and exceptional value.
STAR - RICHMOND, TX
The product produces great tasting water and it is very simple to install with clear instructions. I highly recommend!
BEEGEE
Installing Aquasana was a breeze! After installing the Aquasana 3-stage filter, my water tasted much better than before, and the whole family noticed!
AQUA FAMILY - TAMPA BAY AREA
The installation of this filter was simple and easy to do. I am glad that I can replace the filters right under the kitchen sink. The water tastes great and the whole purchase was less than replacing filters on my old RO.
TOMMYTEMPO - MILWAUKEE, WI
I love my new Aquasana undercounter water system. I was buying bottled water and I know that's not good for you. My water now tastes better than FIJI water. I call it my "fresh squeezed" water! Great investment.
MAMADOUGH - CENTRAL PA
I purchased one for my large 1895 farmhouse. Immediately the water tasted better. It was easy to install and it is easy to change filters. If you don't have a water filter, this one is it. Excellent customer service too.
CHAD - CENTRAL POINT, NY
I'm so impressed. Very easy to use and set up. High quality. Highly recommended.
ALEXIS - PHILADELPHIA, PA
The Aquasana filter was really easy to install - the video was an added bonus! The water tastes great and I have peace of mind about the quality of the water I drink all day. I subscribed to the auto-delivery on filters. I'm very happy with this purchase!
ELLEN - THORNTON, CO
Aquasana — an immediate difference in every drop
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Max Contaminant Removal

Industry-leading results for your peace of mind.

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Nothing Added

No chemicals are added to your water during the filtration process.

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The Reviews Are In

15,000+ five-star reviews from customers just like you.

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You Talk, We Listen

Your feedback drives our product innovation.

Under Sink Water Filters for Healthy, Great-Tasting Water

Under sink water filter systems are a popular way to get healthier, better-tasting water because they remove more contaminants than most pitcher-based options and even bottled water. Additionally, using an under sink filtration system enables you to instantly enjoy clean water straight from the tap without waiting or taking up valuable counter or fridge space.

Clean, healthy water is essential. After all, you use water for so much — from washing produce to watering plants to filling your family's glasses (and Fido’s bowl!) at dinner. The majority of municipalities use chemicals such as chlorine and chloramines to treat drinking water for bacteria, but the process can miss other contaminants that may be detrimental to your health. This is why we recommend installing a water filter system under your sink, on your countertop, or for your whole house.

Compared to most pitcher filter systems, Aquasana’s under sink water filters reduce 15x more contaminants. In fact, our NSF tested and certified Claryum® filtration technology removes up to 99% of harmful contaminants including mercury, fluoride, lead, asbestos, and others from your tap water.

Choose the Best Under Sink Water Filter System for Your Home

Aquasana offers several under sink water filtration systems to fit the unique needs of your home and family, and many include a dedicated faucet that dispenses filtered water.

To help determine the best under sink water filter for your home, start by reading your water quality report and consider what level of filtration you’ll need to reduce contaminants in your area. Our OptimH2O® Reverse Osmosis + Claryum® offers our most powerful under sink filtration, but we also offer several other under sink water filter systems that are great at reducing contaminants and protecting you and your family's health:

  • Claryum® 2-Stage : Reduces the presence of 77 harmful contaminants including lead and mercury
  • Claryum® 3-Stage : Removes up to 99% of lead & 76 other contaminants
  • Claryum® 3-Stage Max Flow : An upgraded version of the Claryum® 3-Stage, now featuring a 44% faster flow rate and 800 gallons of filter life
  • Claryum® Direct Connect : An easy to install, fast-flowing water filter that connects directly to your existing faucet and removes up to 99% of 77 harmful contaminants

All of these under sink water filters are tested and certified to reduce chlorine, chloramines, herbicides, pesticides, pharmaceuticals and more in your tap water.

If you prefer a countertop water filter, our systems use NSF certified Claryum® filtration technology proven to remove up to 99% of lead, asbestos, chlorine, chloramines, and 73 other harmful contaminants.

OptimH2O® Reverse Osmosis + Claryum® Filter

The OptimH2O® Reverse Osmosis + Claryum® Filter stands in a league of its own when it comes to effectively removing water contaminants. This powerful under sink water filter features the only filtration method proven to significantly reduce the presence of 88 harmful contaminants including 95% of fluoride and mercury, 99% of lead and asbestos, and 97% of chlorine along with several other potential tap water hazards.

It should be noted that some other reverse osmosis (RO) systems unintentionally remove healthy minerals, impacting the taste and health benefits of your water. However, Aquasana's remineralization technology restores the pH balance of your water—along with preserving important elements that naturally occur in water like calcium, magnesium, and potassium to ensure your drinking water contains vital minerals, has optimal alkalinity, and tastes great.

How to Install and Replace Our Under Sink Water Filters

Installing our under sink water filters is easy. Each Aquasana under sink water filtration system comes with its own detailed step-by-step installation instructions in addition to a video guide to help simplify the setup process. Replacements are quick and easy, but will vary in frequency depending on use. For more information on how often to replace components within our under sink water filters — check out our under sink and countertop filter replacement page.

If you have additional questions about our under sink water filter systems, installation, replacement, or our products in general—please contact us for customer support.