"Study: Public water supply is unsafe for millions of Americans" - CNN "Can you get cancer from tap water? New study says even 'safe' drinking water poses risk" - USA Today "Drinking water serving 7.5 million Californians has been contaminated with toxic PFAS, new report says" — CNN "New Study Links Lead Exposure to Heart Disease Deaths" - Consumer Reports "New Orleans Officials Have Covered Up An Alarming Lead Report For Years" - Buzzfeed News "Investigation: Lead in some Canadian water worse than Flint" - AP News
3-Stage Under-the-Sink Filter System
Buy Now
Kitchen Faucet Filter System
3-Stage Under-the-Sink Filter System
3-Stage Under-the-Sink Filter System
The best kitchen faucet filter
Filter system better than Reverse Osmosis
Kitchen Faucet Filter System
3-Stage Under-the-Sink Filter System
3-Stage Under-the-Sink Filter System
The best kitchen faucet filter
Filter system better than Reverse Osmosis

3-Stage Under-the-Sink Filter System

Get Clean and Safe Water, on Tap

Do you want the same clean and safe water you've come to expect from Clearly Filtered, right out of your tap? Our revolutionary 3-stage under-the-sink filtration system is as easy as it gets. Wash vegetables, run pasta water, or fill your coffee maker with peace of mind knowing your tap water will be filtered to remove up to 99.9% of 232+ contaminants.

$ 500.00
Free Shipping
Free Shipping
Lifetime Guarantee
Lifetime Guarantee
Built in the USA
Built in the USA
30 Day Worry Free Trial
30 Day Worry Free Trial
The System

Quick DIY Installation

Installation takes 15 minutes or less and doesn’t require a plumber. (The record is 2 minutes, 2 seconds using nothing but a wrench and a screwdriver!) Watch the video.

 

Non-Permanent Installation

Our system filters water that comes through your existing cold water line, so there is no drilling into your countertop or modifications needed to your sink. This makes it a great option for renters and homeowners alike.

 

Tool-Free Filter Changes

When it’s time to change your filters, just screw off the old and screw in the new. It’s that simple. Watch this video to see just how easy it is. [link to existing filter change video]

 

Slim, Discrete Design

The entire filter system sits flush against the wall and is just 3’’ deep, so you don’t have to sacrifice valuable under-sink space to have clean and safe water.

The Filters

R.O. Quality Water with No Waste

Remove over 230 contaminants and maintain the healthy minerals and nutrients in water, all while never wasting any water down the drain.

 

2,000 Gallon Filter Life

The extended filter life can provide clean and safe water for an average of 12 months before needing to be replaced.

 

100% BPA Free Construction

Braided stainless steel hoses are BPA free.

 

99.7% Fluoride Removal

Our 3-stage filtration system with Affinity Filtration Technology removes 99.7% of fluoride. And we don’t stop there—our system removes up to 99.9% of 232+ contaminants while keeping in the beneficial nutrients naturally found in water.

See for Yourself
Our Most Advanced Filter Yet
 
Our Technology Isn’t Just Unique, It’s Unparalleled
How It Works
Stage 1: Premium Carbon Priming Filter
Stage 2: Heavy Metal and VOCs Filter
Stage 3: Fluoride and Arsenic Filter
Stage 1: Premium Carbon Priming Filter

Granulated coconut carbon priming filter gets rid of unpleasant chlorine, tastes, odors, cloudiness and colors. Also removes VOCs and other common chemicals from the water. Made in the USA.

Stage 2: Heavy Metal and VOCs Filter

Special-blend stage removes up to 99.9% of heavy metals, pesticides and herbicides and contaminants such as arsenic, lead, chromium, pesticides, herbicides, radiation, PFAS, and much more. Made in the USA.

Stage 3: Fluoride and Arsenic Filter

Fluoride and Arsenic Filter

Check The Stats
How Clearly Filtered Compares
Cost
Installation Difficulty
Power Required
Installation Time / Cost
System Footprint
Fluoride
Lead
Clearly Filtered <br> Under-the-Sink System
Clearly Filtered
Under-the-Sink System
$500
100% DIY
No
10 min / $0
13.75"W x 3.5"D x 16.75"H
99.5%
99.5%
APEC Reverse Osmosis
APEC Reverse Osmosis
$425
Plumber Required
Yes
2-3 hours / $150+
16"W x 16"D x "17H
93.8%
96.8%
Home Master HydroPerfection Reverse Osmosis System
Home Master HydroPerfection Reverse Osmosis System
$592.95
Plumber Required
Yes
2-3 hours / $150+
24"W x 12"D x 17"H
97.7%
99.3%
Clearly Filtered
Clearly Filtered
Filter Life
100 Gallons
Flouride
98.0%
Lead
99.5%
Arsenic
99.6%
Pesticides
99.9%
Bacteria
99.9%
Chromium-6, Pharmeticals, Hormones, Trihalomethanes, Herbicides
99.9%
Brita
Brita
Filter Life
Flouride
No Claim
Lead
No Claim
Arsenic
No Claim
Pesticides
No Claim
Bacteria
No Claim
Chromium-6, Pharmeticals, Hormones, Trihalomethanes, Herbicides
No Claim
Soma
Soma
Filter Life
Flouride
No Claim
Lead
No Claim
Arsenic
No Claim
Pesticides
No Claim
Bacteria
No Claim
Chromium-6, Pharmeticals, Hormones, Trihalomethanes, Herbicides
No Claim
PUR
PUR
Filter Life
Flouride
No Cliam
Lead
99.5%
Arsenic
No Claim
Pesticides
92.6%
Bacteria
No Claim
Chromium-6, Pharmeticals, Hormones, Trihalomethanes, Herbicides
No Claim
*Information for this chart was compiled from manufacturer websites and brochures. February 2017.
3-Stage Under-the-Sink Review - image of system under a sink
5 stars
Love It!

Love my under sink filter system! It was super easy to install and I love the taste of the water, super clean! I was prepared for the reduced water pressure, but I can barely tell...

Kirstin G.
Verified Buyer
Best Under Sink Filter System - Fluoride, Lead, PFAS
5 stars
Fabulous filter

Took my husband about 5 minutes to install the filter. Love knowing my tap water is safe to drink and washing veggies and fruit using pure water is very comforting. No more chlorine smell! Already had the pitcher and now the under the counter filter system. Thank you!

Kerry C.
Verified Buyer
Under Kitchen Sink Filter - Clearly Filtered
5 stars
Best Filter Ever

I have used the under sink filter for a couple of years now and the filters have performed flawlessly. I am now on my second set of filters with no plan of ever buying anything but these filters. Clearly Filtered has changed the game when it comes to providing clean drinking water. I love knowing that the water I am drinking is safe and only contains the things my body needs.

Steven S.
Verified Buyer
5 stars
Excellent!

The under sink unit arrived today and installation was straightforward and simple. It doesn't take up much space and the water tastes even a bit better than the CF pitcher which is excellent already. Water flow is decreased a small amount as you describe, but any filter system will do that. It's great running it through the existing tap without having to install a separate spigot and call a plumber, and changing the filters in a year will be a breeze. Glad to be on the VIP program as well. Thanks for a well-thought-out and well-designed product. Keep up the good work.

Martin
Verified Buyer

Customer Reviews

5.0 Based on 26 Reviews
5 ★
96% 
25
4 ★
4% 
1
3 ★
0% 
0
2 ★
0% 
0
1 ★
0% 
0
Customer Photos
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Filter Reviews:
  • pitcher
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  • filter
  • husband
  • filters
  • drinking water
  • faucet
  • system
  • trouble
  • kitchen sink
TB
11/09/2019
Tracy B.
United States United States

I should have purchased a long time ago

The more I listen to podcasts regarding health and longevity, the more I understand how poor our water supply is which is frightening. I specifically wanted something that filter fluoride and Clearly Filtered was recommended to my by a counciling physician. The fact that this unit is portable is a big plus.

EK
11/05/2019
Eli K.
United States United States

Smart decision

I finally made the smart decision to eliminate plastic water bottles from my family’s refrigerator. Purchased the filter easy to install bought some glass water bottles that now fill the fridge. Water taste great, healthy, will save lots of money and the environment in the long term.

KG
10/17/2019
Kirstin G.
United States United States

Love it!

Love my inner sink filter system! It was super easy to install and I love the taste of the water, super clean! I was prepared for the reduced water pressure, bur I can barely tell...

Kirstin Glenn verified customer review of 3-Stage Under-the-Sink Filter System
JC
10/08/2019
Josh C.
United States United States

Our review is 5 stars

We love the product and the taste of the water is excellent. I'm sure we're are consuming 100% pure filtered water.

LB
10/03/2019
Lebel B.
United States United States

Good

Good good good good good

Under-the-Sink FAQs
HOW LONG WILL THE FILTERS LAST?
On average, the filters will last 12 months (2,000-gallon filter life). However, we recommend that you change filters based on usage. Larger families may need to change filters approximately every 9 months and single users every 15 months. Actual filter life varies based on average daily use and contamination levels of your drinking water.
HOW HARD IS IT TO CHANGE THE FILTERS?
The filters have a simple twist-on/twist-off design so there are no special tools required to change out your filters— just your hands. The best part is, we fitted each filter with its own automatic shut-off valve. This means there is zero chance of a leak while you are changing the filters, even if you forget to turn off the water.
DO I NEED TO INSTALL A SEPARATE FAUCET FOR THIS?
No. Our system installs directly on your faucet’s existing cold water line. This means everything that comes out of your cold water line is filtered and ready to use.
DOES THIS FILTER MY HOT WATER?
No. Our system does not filter the hot water coming out of your faucet, so the filters will not be in use when you are running hot water.
WILL IT AFFECT MY WATER FLOW?
Yes. We typically see about a 20%-25% reduction in water pressure on the cold water line only. The reason for slowing down the flow is to ensure the filter has enough contact time with the water in order to remove 232+ contaminants. We could make it flow faster, but then it wouldn’t be able to remove as many contaminants. This is a sacrifice we are just not willing to make.
WHAT IF I AM RENTING OR MOVE IN THE FUTURE?
Our under-the-sink system is the perfect solution for people who are renting or who may move because it is not a permanent install. There is no drilling into your countertop or modification needed to your sink, as is typically the case with reverse osmosis systems. The filtration unit can be removed as easily as it was installed in just a few minutes. That means you can take it with you if you ever decide to move, and you won’t be leaving any footprint behind.