Top 10 best under sink water filter 2019

No one who knows what is happening 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. The economical way to provide a lot of filter water safe for human consumption is installing under sink water filter. This article will guide you Top 10 best under sink water filters 2019

under sink water filter

Comparison table of Top 10 best under sink water filter 2019

Namefilter lifestages 
Home Master TMHP HydroPerfection2000 gallonsbest price and buy
Home Master TMAFC-ERP Artesian2000 gallonsBest price and buy
Home Master TMAFC Artesian2000 gallonsbest price and buy
APEC WFS1000 capacity3 stagesBest price and buy
Culligan US-EZ3000 gallons1 stageBest price and buy
Express Water1 year5 stagesBest price and buy
Filtrete Advanced Undersink Water6 months1 stageBest price and buy
iSpring RCC7AK1 year7 stageBest price and buy

Under sink water filter is mounted directly into water line under the kitchen sink.  Some filters use already installed in the existing faucet or you install separate filter faucet. The water is filtered using reverse osmosis method and they usually use a multi-stage filtration process, so they don’t just filter water but still purify water providing guaranteed safe water for human consumption.

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How Under sink water filter work

undersink water filtersb2017

It gets Cold water from point A then sends water to the filter at point B 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 at point C

The process is under high pressure when you open the filter faucet mounted on top of sink water flows from the entry point to the filter then out the filter faucet.

Advantages of Under sink water filter

•    Filters or Cartridges last longer since you filter only required water for drinking and cooking

•    Multi-stage filtration process removes different impurities present in water thus giving safe water for drinking

•    Saves time since you get filtered water just by turning on the filter faucet

•    Compared to another filter like pitchers filters it filters 1,000 gallon of water where else pitches filters 20 gallons.

•    Don’t take countertop space of your sink.

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Disadvantages of Under sink water filter

•    Requires qualified personnel to install

•    You need adding another faucet for filtration

•    You need to drill an extra hole to fix filter faucet

•    They take up under sink space   

Our top pick of top 10 best under sink water filter

under sink reverse osmosis

Under sink reverse osmosis

Home Master TMAFC Artesian

under sink reverse osmosis

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It uses a reverse osmosis filter system but the innovative system is designed to solve the most common problem associated with traditional RO systems. Some of the issues it addresses are the following:

  • Maximum Sediment: 5 NTU
  • Maximum total dissolved solids (TDS): 2000 ppm
  • Maximum hardness: 10 gpg
  • Maximum Iron 0.2 ppm and pH limit is 4 – 10
  • Faster flow rate – water flows twice faster than traditional Ro system.

Filters water in seven stages which remove up to 98% chemicals and another contaminant. The system uses advance carbon media known as catalytic carbon which is better than ordinary carbon prefilter making it effectively remove stubborn chemical disinfectant chloramines.

During the purification process, calcium and magnesium minerals are added for great taste.

The filter is easy to change and are changed only once in a year or after every 2000 gallons. You require no wrenches, heavy tool or force to loosen canister shut, its modular design and push-in fittings secure a quick and painless filter change.

It includes a non-electric permeate pump to improve system efficiency further. Also, this help in reducing water waste and increases water production.

In the package include RO membrane, filters, storage tank,  3/8 feed water adapter with shut-off valve, chrome RO faucet, RO faucet adapter, drain saddle and installation instructions.

Home Master is available in other option which is still Undersink filters

Check the other two option on Amazon

Home Master TMHP HydroPerfection Undersink Reverse Osmosis Water Filter System

Home Master TMAFC-ERP Artesian Full Contact Undersink Reverse Osmosis Water Filter System

How to install Home Master TMAFC Artesian Full Contact Undersink Reverse Osmosis Water Filter System

Express Water filter – best for well water

under sink reverse osmosis for well water

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It is a Reverse Osmosis Filtration System that filters water in 5 stage-

•    5 Micron Melt-blown Polypropylene Sediment- this is stage 1 of the system that removes dirt, dust, sand, and rust.

•    GAC Activated Carbon Filters and Micron Carbon Filters- stage two and three which chlorine, volatile organic chemicals, and odor-causing compounds.

•    Thin Film 50 GPD RO Membrane- stage-4 that focuses on removing lead, arsenic, chromium, fluoride, TDS, and radium

•    Inline Granular Carbon Filter- stage -5 is a final process that comes right before faucet helping remove any possible odor and bad taste.

This system RO membrane, Post Carbon, and Alkaline are replaced after one year while Sediment, Carbon Block, Granular Activated Carbon are replaced twice a year.

The express water filter has unique features such:

•    Double Sealed Filters to preserve your filters and your kitchen.

•    Our Leak Stop Valve shuts off water flow if excess water is detected

The whole system is 100% lead-free and BPA-free including extra parts provided

Comes with an extra set of 4 filters and an additional replacement set is Industry Standard & Universal for Consumer Security.

It has one year warranty and satisfaction guarantee with USA Technical Support in California 800-992-8876

This system filters well water and tap water. It produces 50 gallons of pure water per day which is enough for the whole family, and you get water faster from your tap at 0.8 GPM.

It comes with a storage tank (4gallon), tank stand, all filters needed, extra-4 replacement filter and filter housing wrench

The tank can be installed under the sink, basement or any other remote location but you may need additional tubing or a delivery pump depending on how far away you plan to install or if you plan to link to a refrigerator.

This system is compatible with 3/8″ and 1/2″ under sink connections and Operates on 40-80 PSI water pressure but you may need a Booster Pump or Pressure Regulator depending on your water pressure.

iSpring 6-Stage Under Sink Reverse Osmosis  RCC7AK

under sink water filter reverse osmosis

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A lead-free, solid brass faucet with a brushed nickel finish is included which is easier to mount on the counter as the primary source of drinking water, but output lines can also be connected to your ice maker, coffee maker

This high capacity reverse osmosis system is certified by NSF/ANSI 58 to reduce impurities such as lead, chlorine, fluoride, arsenic, hormones, asbestos, calcium, sodium, bacteria, giardia and viruses.

The system filters water in six stages which includes:

Stage 1-sediment filter

Stage 2- Carbon KDF (GAC) filter

Stage 3- Carbon block (CTO) filter.

The three prefilter help remove large contaminants and protect the membrane from chemicals

Stage 4 -RO membrane

Stage 5- Fine GAC filter final polishing before filtered water is delivered in your faucet.

Stage 6- Alkaline Remineralization filter restores healthy minerals and a natural alkaline balance, while also producing a more natural taste.

The first stage has Transparent 1st Stage Housing which allows visually inspecting the sediment filter and viewing the contaminants being removed from your water. Also, transparent housing helps to know it is time for a filter change before a problem occurs.

Push to connect fittings, well organized written instructions, instructional videos, access to iSpring’s unparalleled technical support and color coordinated tubings simplify the installation process and prevent leaking.

In the package includes:

  • Machine head with RO housing, 5th stage FT15, and 6th stage FA15
  • Pre-filter Housings (2 opaque 1 transparent) & Housing wrenches
  • Complete filter pack including Alkaline pH filter
  • 3.2-gallon pressurized tank (2.5-gallon holding capacity)
  • Lead-Free brushed nickel faucet
  • 4-Color tubings (1/4″ OD) & Spare fittings & O-rings
  • Feed water adapter (fits both 1/2″ NPT & 3/8″ COMP)
  • Drain saddle & Water detector
best under sink water filter for well water

Best under sink water filter for well water with the dedicated faucet


Best under sink water filter for well water with the dedicated faucet

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Purifies water in 3 stage: polypropylene sediment filter which removes particles, dust, and rust; Premium extruded carbon block which eliminates bad odor, colors, chlorine and taste; Premium extruded carbon block the same stage is repeated so as to provide excellent filtered water

Filters last over 12 months and deliver filtered water directly to your tap water. There is no tank needed.

This system does not waste water or require regular filter flushing meaning all water that goes into the system goes straight to your cup. 

It is NSF certified that guarantees it provides quality water free from contaminants

Used to treat tap and well water

It has one-year satisfaction guarantee with lifetime support by certified WQA water specialist based in Ca

It comes with free chrome faucet which is 100% lead-free and JG food grading tubing approved by PLUS NSF and FDA

3M Aqua-Pure Under Sink Water Filtration System  best for well water/ non-chlorinated

under sink water filter best for well water/ non-chlorinated

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The 3M Aqua-Pure Under Sink Water Filtration System is NSF certified to reduce contaminants such as particulate, rust, lead, VOCs, MTBE, parasitic protozoan cysts, chlorine taste and odor.

Featuring Automatic shutoff meter that reminds the user when to change cartridges.

With Sanitary twist-off cartridge design makes easier and faster to change 3M Aqua-Pure cartridge.

This system connects easily under the kitchen sink and includes an attractive dedicated drinking water faucet.

It is designed for effective use in both chlorinated (municipal) and non-chlorinated (well water) systems.

Advanced dual-stage carbon-block filtration process to help provide cleaner, clearer better tasting drinking water

The filter change is determined by actual water use and incoming water quality.

In the package includes everything needed for installations such as a polished chrome dedicated faucet, quick-connect fittings, an attached mounting bracket, shroud, and tubing.

Also, included is a built-in shut-off valve that allows for changing the Sanitary Quick Change filters without shutting off the water supply.

best under sink water filter with dedicated faucet

Best under sink water filter with a dedicated faucet

Culligan US-EZ-1 EZ Undersink Drinking Water Filtration System

under sink water filter with dedicated faucet


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Includes dedicated faucet that can be installed in most sinks providing cleaner filtered water for cooking or drinking

 It comes with RC-EZ-1 filter cartridge effectively removing contaminants such as particulates class III, chloride and removes 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 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 which reminds you of time to change the filter.

Included in the package are Filter head with 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.

Aquasana 3-Stage Under Sink Water Filter System

Best under sink water filter with a dedicated faucet

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The Aquasana water filter cleans water in 3-stage;

Stage 1: 20 Micron pre-filter catches rust, sediment, and silt

Stage 2: Activated Carbon Reduces organic chemicals (pharmaceuticals, herbicides, pesticide), other 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.

Full system 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 filter increases capacity, reduce clogging and gives 600 gallons of clean water.

It comes with a dedicated faucet made of metal and lead-free. The faucet is brushed nickel, bronze, or chrome so you can choose that best to match your kitchen décor.

Filters are easy to change no need to disconnect hoses or water lines, filter housing easily twists off

It has indicating device that alerts when it is time to change your filter.

Aquasana AQ-5300R 3-Stage Under Sink Water Filter Replacement Cartridges

New Wave Enviro-30008 10 Stage Unit Undersink-Mounted Water Filter

under sink water filter

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The New Wave Enviro is designed to reduce chlorine, herbicides, pesticides, and Asbestos.

Filters are supposed to be replaced every 12 months or 1,500 gallons.

best under sink water filter with no dedicated faucet
Best under sink water filter with no dedicated faucet

Filtrete Advanced Undersink Water Filtration System

best Under sink water filter with no dedicated faucet

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This system removes contaminants such as chlorine, sand, soil, silt, microbial cysts, odor, and tastes.

There is no dedicated faucet easily connect to your kitchen or bathroom faucet.

It is NSF certified thus guarantee quality water and maintains full water flow on your existing faucet at 2.25 GPM.

The system is easy to install; the filter is changeable and last for only six months or after 2000 gallons.

With easy push-fitting connections and 1/4 turn makes easier to change filter replacements of this system.

best under sink direct connect water filter
Under sink direct connect water filter/ quick connect sink filters

Woder 10K Ultra High Capacity Direct Connect Water Filtration System

Under sink direct connect water filter/ quick connect sink filters 

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The Woder water filtration system eliminates Heavy metals, Chlorine, turbidity, Chromium 6, Volatile Organic Compounds, Mercury, odors and bad tastes.

It comes with direct connect hoses that fit standard 3/8” water valves under kitchen and bathroom sinks. The hose is installed directly to the existing cold water valve and faucet stem under your sink with no plumbing required.

This water filtration system will last 10,000 gallons or 3-years.

The woder filters are made with NSF approved materials and approved by independent laboratories to NSF/ANSI 42 Protocols plus lead so you are guaranteed in the quality of woder filtered water

Use the system with municipal treated cold water only flow rate of 3GPM @65 psig but Do not use with hot/ salty/softened or well water

CuZn UC-200 Under Counter Water Filter 

under counter water filter

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This filter works beneath any home or office sink to filter up to 50,000 gallons of cold water, and the filter is replaced every 50,000 gallons or 5 years.

The CuZn UC-200 Under Counter Water Filter is designed for use with Municipal Water, not Private Well Water.

It takes a few minutes to install and connects directly to your kitchen sink cold water line.  All you will require is an Adjustable Wrench for Tightening Connections.

The UC-200 is bacteriostatic no bacteria or mold can grow inside this system.

It filters water in 3-stages Micro Sediment Membranes, KDF-55 filtration media, and Coconut Shell Carbon.

The filtration media is tested to NSF standard to reduce a wide variety of contaminants such as organic, inorganic chlorine, heavy metals (lead, mercury, chromium VI, cadmium, etc.), herbicides, pesticides, sediment, algae, molds, bad taste, and odor.

The CuZn UC-200 hardness mineral such as calcium & magnesium to pass through but KDF-55 Filtration Media reduce hard scale formation on heating elements.

Doulton under sink water filter
Doulton under sink water filter

Doulton W9330958 SuperCarb Under Sink Filter System

Doulton under sink filter

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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 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 metal, fluoride, chlorine and organic

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.

What you should look when buying under sink water filter

There are a few features you should consider when buying under sink water filter. These include:

  • Types of under sink water filter

There are two different types of under sink water filter convectional and simple/ direct inline.
Both types use cartridge combine with other technologies to provide filtered water, but installation is different.
As the name suggests the simple under sink water filter works effectively removes all contaminant but how is being installed is not complicated. It is mounted under the sink on your kitchen sink main cold water pipe/line. When installed all the cold water that gets in your house is diverted through the filter to be filtered. It doesn’t require a separate faucet for filtered water and unfiltered water and is easy to install you doesn’t have to drill a hole for an extra faucet.
The only disadvantage with this type since it is connected to the kitchen sink main cold water pipe/line. It won’t filter hot water, a lot of water is filtered so you will have to change the filter more often and lastly if the water reaching the filter has high pressure it will overwork the filter and some water will pass through unfiltered. It is a problem if you have with high contaminants
The conventional is the opposite of simple its installation is complicated. You need to divert kitchen sink main cold water pipe/line to the filter using a connection. When the water is filtered, it sent to the separate faucet installed in the sink. You will have two taps one for cold water that is filtered and the other one for cold unfiltered water probably you will have faucet of hot water. This type will make your filter last longer because part of water is filtered and the pressure is reduced so all water that enters the system will get filtered.
The disadvantages of this type you require a sink that has two faucet holes if not drill an extra hole in the sink, it reduces the water flow rate and requires plumbing for you to install the system.

  • Which contaminants it removes

Under sink water filter has a combination of the filter with different technologies which each removes the specific contaminant.
Not all are designed the same so make sure you purchase the system that filters contaminants present in your water. You can use a water hardness test kit to know contaminants present in water.

  • Easy to install and maintain

Most of these systems are easy to install they come with the DIY installation process that you can do alone at home without hiring a professional.
Since the system use cartridges that require to be replaced after a period the replacement should be smooth and straightforward.

  • Filtration technology

Under sink water filter removes contaminants using different techniques such as reverse osmosis, reduce hard minerals and some brands go up to six stages which include alkaline remineralization. Check such system should save a lot of money and space, therefore, provide quality filtered water.

  • Filter life

Under sink water filter use cartridges and filter to remove contaminants and they don’t last forever requires to be replaced. You should know how long the filter will last for it to be replaced. Some brands need their filter to be replaced after three or six months, but this can be different due to some factors such as quality of water and amount of water filtered. Others are measured in gallons.
Some companies have filter indicator to inform when it needs to be replaced.

  • Water flow/ pressure

As we said earlier if your water pressure is high and you are using simple system some contaminants will escape and pass through unfiltered.
In the conventional system, the water pressure might be low. Therefore you can wait for a few minutes before you get a full glass of filtered water.
Know the flow rate of your system or water supply pressure before buying the filter.

  • Independent certification

Independent certification is the only way to guarantee your water system removes contaminants effectively and is manufactured with quality material. There are independent bodies such as NSF and WQA that test and approve most water systems.

Which contaminants do under sink water filter remove

The under sink water filter use cartridge combined with other technologies to remove contaminants such as:
Bad Odor and taste
Since the system has a carbon activated filter which helps remove chlorine odor and taste.
It removes organic, inorganic chlorine, heavy metals, herbicides, pesticides, algae, and molds.
Removes heavy metal
Carbon filter combination removes heavy metals such as lead, mercury, chromium VI, and cadmium.
Particulate removal
The system has a polypropylene sediment filter which removes particles, dust, silt, and rust.
Reduce hard minerals (calcium and magnesium) that form scale on home appliances

Under sink water filter installation

I have prepared a list of website to guide step by step how to install under sink water filter.

DIY network

Life Hacker


This video might be a help too.

Under sink water filter is one of the best ways to make sure your family always has enough clean water for drinking regardless of the contaminant from treatment plant or pipes. Hoping our review of top 10 best under sink water filters will help find the right product you need for your home. If there is a brand you want us to add to the list above, please let us know in the comment section below.

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