No one knows what happens to your water once it leaves the municipal treatment plant or any filtration facility. Water can get contaminated in the pipes, and the only way to make sure the water you consume or use for cooking is safe is by installing a water filter. If you want to provide your family with clean water through a faucet, install an under sink water filter with a faucet.
In this article, you’ll find an unbiased review of the best under sink water filter with faucet and a guide on how to choose the right one here.
What is under sink water filter with faucet
An under sink water filter with a faucet is a water filtration system that is installed under the kitchen sink to transform contaminated tap water into clean, safe water for human consumption.
The system includes a dedicated faucet that is installed on the countertop, so drilling the hole is required.
The filter is connected under the kitchen to the cold water line using a diverter and sends the filtered water to the separate faucet installed on the countertop.
At the sink top, you will have two faucets one for filtered water and the other one for the unfiltered water
Under sink water filter is also called under counter water filter or under cabinet water filter.
Under sink water filter with faucet comparisons
| Name | Image | Contaminants | Replacement filter | Where to buy | |
|---|---|---|---|---|---|
| 1 | Apec |  | bad odor, colors, chlorine, taste, particles, dust, and rust Filter life: 1000 capacity | Amazon | |
| 2 | Culligan US-EZ |  | particulates class III, chloride and removes bad taste and odor Filter life:3000 gallons |  | Amazon |
| 3 | Aquasana |  | lead, mercury, pesticides, pharmaceuticals, chlorine taste, odor, particulates, cryptosporidium, asbestos, herbicides, detergents, pharmaceuticals, and other volatile organic chemicals Filter life: 800 gallons |  | Amazon |
| 4 | Doulton W9330958 SuperCarb Under Sink Filter System | 
" > | fine particulate matter, bacteria, cysts, turbidity, pathogenic bacteria, hydrogen sulfide, lead,chlorine, taste, odor and organic compounds. |  | Amazon |
| 5 | Whirlpool WHADUS5 |  | chlorine taste and odor, sediment, cysts, lead, and chemicals. Filter life: 6 months |  | Amazon |
| 6 | Frizzlife under sink water filter |  | lead, heavy metals, chlorine, chromium, mercury, rust, volatile organic compound, carcinogens, turbidity, odor and bad taste. |  | Amazon |
| 7 | Ecosoft 3 Stage Under Sink Water Purifier Filtration System |  | chlorine taste and odor, salinity, lead, iron, manganese, tannins, dust, rust, and sediment |  | Amazon |
| 8 | Brondell H2O+ Coral UC300 |  | chlorine taste and odor, heavy metals (such as lead and mercury), industrial chemicals (like benzene), total dissolved solids, volatile organic chemicals |  | Amazon |
| 9 | iSpring US31 3-Stage Under Sink |  | dust, particles, dust, and dirt, cloudiness, chlorine taste, and odor |  | Amazon |
| 10 | Watts Premier WP500313 2-Stage Undercounter |  | simazine, atrazine, benzene, trihalomethanes (TTHM), lindane, xylenes, entamoeba cryptosporidium, giardia, chlorine taste, and odor |  | Amazon |
| 11 | 3M Aqua-Pure Under Sink Water Filtration System |  | particulate, rust, lead, VOCs, MTBE, parasitic protozoan cysts, chlorine taste, and odor. |  | Amazon |
| 12 | Watts WP2BVC Premier | Bacteria, Virus, & Cysts chlorine taste and odor | Amazon | ||
| 13 | Watts Premier 500320 with Ultraviolet |  | lead, cysts, particulate matter, chlorine taste, and odors | Amazon | |
| 14 | New Wave Enviro-30008 |  | chlorine, trihalomethanes, organic and inorganic arsenic, mercury, lead, pesticides, and herbicides. |  | Amazon |
How does an under sink water filter with a faucet work?
The cold water (Contaminated water) sends water to the filter where the filter is mounted at the bottom of the sink.
Then delivers clean water to the user through a particular faucet installed at the top of the sink.
The process is under high pressure when you open the filter faucet mounted on top of the sink. Water flows from the entry point to the filter and then out the filter faucet.
Some under sink water filters use the reverse osmosis method to treat your water, while others use a multi-stage filtration process.
Advantages of under sink water filter with faucet
- Filters or cartridges last longer since your filter only requires water for drinking and cooking.
- The multi-stage filtration process removes different impurities present in water, thus giving safe water for drinking.
- It saves time since you get filtered water just by turning on the filter faucet.
- Compared to other filters like pitcher filters, it filters 1,000 gallons of water, whereas pitchers filter 20 gallons.
- Don’t take the countertop space next to your sink.
- It does not waste any water like inline under sink water filters and under sink reverse osmosis system
Disadvantages of Under sink water filter with faucet
- Requires qualified personnel to install
- You need to add another faucet for filtration
- You need to drill an extra hole to fix the filter faucet
- They take up under-sink space
Some of our top picks of under sink water filters with faucet
1. Culligan US-EZ-1 EZ Undersink Drinking Water Filtration System
Summary
- Contaminants removed: particulates class III, chloride, and remove bad taste and odor
- Filter life – 3000 gallons/ 12 months
- Replacement filter – RC-EZ-1 filter cartridge
- Filter Stages-1 stages
Includes dedicated faucet that can be installed in most sinks providing cleaner filtered water for cooking or drinking
It comes with an RC-EZ-1 filter cartridge effectively removing contaminants such as particulates class III, chloride, and bad taste and odor from water.
The included RC-EZ-1 filter cartridge is tested and certified by NSF for the reduction of Chlorine Taste and Odor and Nominal Particulate Class III.
With quick-connect fittings, twist on and twist off makes it easier to change the filter of the Culligan US-EZ-1 EZ Undersink Drinking Water Filtration System.
Also, the quick-connect fittings ensure the filter stays in place until it needs to be changed, so you don’t need to worry about hidden leaks or spills.
The cartridge can filter up to 3,000 gallons of water or can last for 12 months.
It has a filter change sticker that reminds you of the time to change the filter.
Included in the package is a Filter head with a built-in bracket, US-EZ-1 Water filter cartridge, mounting screws, water supply adapter, chrome, Lead-free faucet, and fittings, 1/4-inch plastic tubing, cartridge change, and reminder sticker.
Culligan Under-Sink Drinking Water Filtration System with Dedicated Faucet is available in a different capacity
- Culligan US 3 EZ advanced- lasts Up to 6 months or 500 gallons
- Culligan US 4 EZ premium-last Up to 6 months or 500 gallons
watch overview
2. Aquasana 3-Stage Under Sink Water Filter System (AQ-5300.55)
- Among the contaminants removed are rust, sediment, silt, pharmaceuticals, herbicides, pesticides, other volatile organic chemicals, heavy metals (lead and mercury), chloramines (the byproduct of chlorine and ammonia used in water disinfection), giardia, and cryptosporidium.
- Filter life: 800 gallons
- Replacement filter – Aquasana AQ-5300R 3-Stage Under Sink Water Filter Replacement Cartridges
- Filter Stages-3 stages
The Aquasana water filter cleans water in a 3-stage process.
Stage 1: 20 Micron pre-filter catches rust, sediment, and silt.
Stage 2-Activated Carbon reduces organic chemicals (pharmaceuticals, herbicides, pesticides), and volatile organic chemicals, improves the taste of your water, and removes chlorine odor.
Stage 3: Catalytic Carbon removes heavy metals (lead and mercury), chloramines (the byproduct of chlorine and ammonia used in water disinfection), giardia, and cryptosporidium.
The full system is certified by NSF certified to standards 42, 53, 401 +P473 to remove contaminants such as lead, mercury, pesticides, pharmaceuticals, chlorine taste, odor, particulates, cryptosporidium, asbestos, herbicides, detergents, pharmaceuticals, and other volatile organic chemicals.
No water is wasted while using this system and no harmful contaminants are added back into your water.
Sediment filters help reduce clogging, therefore increasing capacity. The sediment filter gives 800 gallons of clean water.
It comes with a dedicated faucet made of metal and is lead-free. Aquasana AQ-5300.55 comes with brushed nickel, AQ-5300.62 comes with bronze, and AQ-5300.56 comes with chrome so you can choose that best to match your kitchen decor.
Filters are easy to change no need to disconnect hoses or water lines, filter housing easily twists off
It has an indicator that alerts you when it is time to change your filter.
You can purchase a replacement filter using the link below
Aquasana AQ-5300R 3-Stage Under Sink Water Filter Replacement Cartridges
How to install Aquasana 3-Stage Under Sink Water Filter System
3.Doulton W9330958 SuperCarb Under Sink Filter System
- Among the contaminants removed are fine particulate matter, bacteria, cysts, turbidity, pathogenic bacteria, hydrogen sulfide, lead, chlorine, taste, odor, and organic compounds.
- Filter life-N/A
- Replacement filter—each stage filter is sold separately.
- Filter Stages-4 stages
The Doulton water filter is connected under the counter utilizing Doulton ceramic technology.
Each package comes with an UltraCarb Candle filter, durable plastic housing, and a faucet. It also comes with everything that is needed for a standard installation.
The whole system is NSF certified, and the faucet is CA Prop 65 approved.
The Doulton super carb is a four-stage system with a combination of ceramic filtration making it possible to remove bacteria, E-coli, heavy metals, fluoride, chlorine, and organics.
1st stage Doulton Ultracarb ceramic which reduces fine particulate matter, bacteria, cysts, and turbidity. Doulton Ultracarb ceramic replacement filter
2nd stage Doulton® ceramic filter candles remove suspended solids, pathogenic bacteria, hydrogen sulfide, and lead. Doulton® ceramic filter candles replacement filter
3rd stage activated carbon block removes chlorine, taste, odor, and organic compounds.
4th stage Ion exchange resin that reduces Lead and other heavy metals.
How to install the Doulton Undersink Water Filter System
4. Frizzlife under sink water filter (MP99)
- The contaminants removed are lead, heavy metals, chlorine, chromium, mercury, rust, volatile organic compound, carcinogens, turbidity, odor, and bad taste.
- Filter life-N/A
- Replacement filter – Frizzlife FZ-2 Replacement Filter Cartridge
- Filter Stages-2 stages
The Frizzlife Under Sink Water Filter is a two-stage water filtration system that helps reduce lead, heavy metals, chlorine, chromium, mercury, rust, volatile organic compound, carcinogens, turbidity, odor, and bad taste.
The two-stages include
- A sediment filter cartridge with 5-micron precision reduces particles such as sand, silt, and rust from the water.
- Block carbon filter cartridge with 0.5-micron precision that reduces 99.99% of LEAD, CHLORINE, ODOR, and PARTICLES from the water.
It comes with 3/8″ direct connect hoses that fit standard 3/8″ feedwater valves under US kitchen sinks. It also comes with 3/8″ to 1/2″ converter fittings, allowing the system to fit directly to the existing both 1/2″ and 3/8″ cold water lines and faucet under your sink.
The system installation requires no plumbing but utilizes a quick-change twist design which makes installation easy and takes fewer minutes.
The filter cap is designed with a BUILT-IN shut-off valve. You do not need to shut off the water supply whenever you are replacing the cartridge.
During filter replacement, you only need to replace the filter cartridge and not the whole house.
A replacement cartridge is available using the link below
Frizzlife FZ-2 Replacement Filter Cartridge For MP99, MK99 Under Sink Water Filter
It has a flow rate of 2.0GPM @40 psi and the cartridge lasts 2 years or 1,600 gallons of water.
It comes with a lead-free stainless faucet with quick fittings.
Frizzlife MP99 under sink water filter installation guide
5. Ecosoft 3 Stage Under Sink Water Purifier Filtration System
- contaminants removed: chlorine taste and odor, salinity, lead, iron, manganese, tannins, dust, rust, and sediment.
- Filter life: 400 gallons/6 months
- Replacement filter – Ecosoft 3-Stage Under Sink Water Filter Replacements
- Filter Stages-3 stages
Ecosoft is a 3-stage water filtration system. The three stages include:
- 1-stage: 5-micron polypropylene sediment filter which removes dust, rust, and sediment larger than 5 microns.
- 2-stage: ecomix D531 filters which reduce chlorine byproducts, salinity, lead, iron, manganese, and tannins.
- 3-stage: activated coconut-based carbon shell filter that helps remove chlorine taste and odor.
The filter lasts for 6 months or 400 gallons. You can buy a replacement filter using the link below.
Ecosoft 3-Stage Under Sink Water Filter Replacements
Ecosoft 3 Stage Under Sink Water Purifier Filtration System installation guide
6. Brondell H2O+ Coral UC300 Three-Stage Undercounter Water Filtration System
Brondell’s is a three-stage water filtration system that consists of a sediment filter, pre-carbon filter, and carbon block filter.
Three-stage filtration helps reduce contaminants such as chlorine taste and odor, heavy metals (such as lead and mercury), industrial chemicals (like benzene), total dissolved solids, and volatile organic chemicals.
The filters are designed to last for 12 months with a 600-gallon capacity. You don’t have to worry about when it’s the right time to change the filter because the system has an integrated LED filter change indicator that reminds you when to replace your filters.
You can buy a replacement filter using the link below
Brondell H2O+ Coral Three-Stage Carbon Block Replacement Water Filter Set (UF-35)
Features a Twist & Seal system that makes changing the water filter quickly and two “quick connect” hose connections make installation easy and fast. It also has a double O-ring filter seal to prevent leaks.
To guarantee quality Brondell filter system is Gold Seal-certified by the Water Quality Association for trusted performance and is certified for NSF/ANSI standards 42, 53, and 372 and CSA B483.1 for Lead. It also offers a one-year warranty.
It comes with a chrome kitchen faucet with an LED filter indicator.
Brondell is available in a single-stage under counter water filtration system
Brondell UC100 H2O+ Coral Single-Stage Under Counter Water Filtration System
7. iSpring US31 3-Stage Under Sink High Capacity Tankless Drinking Water Filtration System
The iSpring US31 is a 3-stage under-sink water filtration system. The three stages include PP sediment filtration, dual CTO carbon filtration, and the second layer contains unique CTO filtration.
The filter helps remove contaminants such as
- Sediment help remove dust, particles, dust, and dirt
- CTO carbon filtration removes cloudiness, chlorine taste, and odor
- CTO filtration removes further cloudiness, chlorine taste, and odor
It comes with a European-designed brushed nickel all-metal faucet and clear see-through 1st stage housing.
To guarantee water quality, material safety, and structural integrity the system is made to comply strictly with FDA standards and tested by independent third parties against NSF/ANSI standards (42, 53, and 61).
It is recommended to replace the filter every 6 to 12 months. You can buy a replacement filter using the link below
iSpring F3 6-Month Prefilter Replacement Supply Filter Cartridge Pack Set for Standard Reverse Osmosis RO Systems, F3, White
Watch the video on how to install iSpring US31 Under Sink Water Filtration System Installation
8. Watts Premier WP500313 2-Stage Undercounter
Watts is a 2-stage under-counter water filtration system. The filter includes five-micron sediment and a one-micron carbon block filter
The filter helps remove contaminants such as simazine, atrazine, benzene, trihalomethanes (TTHM), lindane, xylenes, entamoeba cryptosporidium, giardia, chlorine taste, and odor from the water
Filter last after filtering 600 gallons. Buy replacement filter here
Watts Premier Lead, Cyst, VOC Carbon Block Two-Stage Replacement, 1 Count(Pack of 1), Filter Pack-
Watts offers more under sink water filtration systems including
- Watts Premier Pure UF-3, 3-Stage Water Filtration System, 531130 -Ultrafiltration system
- Watts WP2BVC Premier Two-Stage Microbiological Purifier Water Filtration System -best for well water
9. Water2Buy Undersink Drinking Water Filter System
Water2Buy Undersink Drinking Water Filter System is designed to remove chlorine, sediment, and volatile organic compounds in your water.
It is recommended to replace the filter every 12 months per person. If you have 2 people replaced every 6 months.
10. GE GX1S50R Single Stage Under Sink Filter Water System
GE GX1S50R Single Stage Under Sink Filter Water System that helps reduce lead, cysts, asbestos, chlorine taste and odor, and other contaminants.
it comes with a Chrome faucet with a filter replacement indicator.
Replace the filter every 6 months for better performance.
11. Wingsol Under Sink Water Filter with Faucet (WS-QC-001 F) Municipal water
Wingsol Under Sink Water Filter with Faucet (WS-QC-001 F) uses a multi-stage PC filter that improves taste and reduces contaminants such as chlorine, odor, smell, color, VOCs, sand, rust, and sediment.
The filter lasts after treating 4000 gallons or 4-6 months. A replacement cartridge is available on Amazon using the link below.
Wingsol Under Sink Water Filter Replacement PC filter
Under sink water filter with UV light
12. Watts Premier 500320 3-Stage Undercounter Drinking Water Filter with Ultraviolet
This Watts Premier 3 stage is under a counter system with Ultraviolet. 3-stages include sediment filter, carbon block, and ultraviolet
The system helps reduce lead, cysts, particulate matter, chlorine taste, and odors
Under sink water filter for lead
- Aquasana 3-Stage Under Sink Water Filter System
- Doulton W9330958 SuperCarb Under Sink Filter System
- Frizzlife under sink water filter
- Whirlpool WHADUS5 Under Sink Water Filtration System
- Ecosoft 3 Stage Under Sink Water Purifier Filtration System
- Brondell H2O+ Coral UC300 Three-Stage Undercounter Water Filtration System
- Watts Premier Pure UF-3, 3-Stage Water Filtration System, 531130
- 3M Aqua-Pure Under Sink Water Filtration System
- Watts Premier 500320 3-Stage Undercounter Drinking Water Filter with Ultraviolet
- New Wave Enviro-30008 10 Stage Unit Undersink-Mounted Water Filter
Under Sink Water Filter for well water with dedicated faucet
More Wingsol models
- Wingsol Under Sink Water Filter with Faucet, WS-US-003 (f)
- Wingsol Under Sink Water Filter with Faucet WS-US-002 (f).
- Wingsol Jumbo Under Sink Water Filter with Faucet 5-in-1Jumbo advanced (F)
- Wingsol Under Sink Water Filter with Faucet (WS-US-001 advanced F)
Under-sink ultrafiltration water filter system with dedicated faucet
13. PureDrop CUW4 Aquacube Tankless Drinking Water Filter System
- The contaminants removed are sediments, dust, sand, particles, dirt, rust, cloudiness, colors, chlorine tastes, and odors,
- Filter life—6 to 12 months
- Replacement filter-PureDrop FUFM1 Ultra-Filtration Under-Sink Replacement Membrane and PureDrop F3-CUW4 Ultra-Filtration
- Filter Stages: 4 stages
- Connects to a chrome faucet
More ultrafiltration under sink water filter
- Waterdrop 15UB-UF 0.01 μm Ultra Filtration Under Sink Water Filter System
- Waterdrop 17UB-UF 0.01 μm Ultra Filtration Under Sink Water Filter System
- Waterdrop WD-10UB
- Waterdrop TSU B 0.01μm Ultra-Filtration Under Sink Water Filter System
- Ultrafiltration Under Sink Water Filter System Waterdrop TSU-W
10-stage water filter under sink
14. New Wave Enviro-30008 10 Stage Unit Undersink-Mounted Water Filter
- Contaminants removed: chlorine, trihalomethanes, organic and inorganic arsenic, mercury, lead, pesticides, and herbicides.
- Filter life – 1500 gallons/12 months
- Replacement filter – New Wave Enviro 10 Stage Plus Water Filter System and Cartridge
- Filter Stages-10 stages
The New Wave Enviro is a 10-stage water filtration system.
The 10-stage system eliminates harmful contaminants such as chlorine, trihalomethanes, organic and inorganic arsenic, mercury, lead, pesticides, and herbicides.
Filters are supposed to be replaced every 12 months or 1,500 gallons.
The dual-stage under-sink drinking water filter
Dual-stage is a two-stage under-sink water filter.
- 3M Aqua-Pure Under Sink Water Filtration System best for well water/ non-chlorinated
- Frizzlife under sink water filter
- Whirlpool WHADUS5 Under Sink Water Filtration System
3-stage under sink water filter
- APEC WFS 1000
- Aquasana 3-Stage Under Sink Water Filter System
- Ecosoft 3 Stage Under Sink Water Purifier Filtration System
More under sink water filter
