Best Under Sink Water Filter: Get Rid Of Fluoride, Lead, Chlorine

Want to get rid of fluoride, lead, chlorine or pesticides using the best under sink water filters on the market?

We review and compare water purifier systems and products and share with you the advantages and disadvantages of each brand.

Whether you’re thinking of buying a Woder, Aquasana or Apec under sink water filtration system, we have included all the important information you need to know before making your decision on which one to buy.

What is the best under sink water filter system- reviews 2017

When you’re ready to buy an under sink water purifier (which is also known as an under counter water filtration system), our links will take you to the product itself, where you can read more customer reviews and product specifications and also purchase replacement filters.

Still not sure about buying an under sink water filter? Don’t worry, we have included some information and advice on the advantages and disadvantages of choosing an under sink system when compared with the other water filter options available.

Under Sink Water FilterReduces Contaminants:FeaturesPrice
Apec 5 tier
reverse osmosis filter

best under sink water filters
Heavy Metals
Reverse Osmosis System
Water tank
Superior filters
Leak-free fittings
Free lifetime support
Made in the U.S.A.
Lead-free chrome faucet
iSpring RCC7 5 stage
reverse osmosis under sink water filter

best under sink water filters
Reverse Osmosis System
Water tank
Superior filters
Made in the U.S.A.
European designer faucet
Clear see-through holding
Water detector/flood alarm
Woder 10k-Gen II direct connect
under sink water filter

best under sink water filter
Heavy Metals
Complete assembled kit
Strong water flow
Installation hardware incl
Filter lasts 3 years
Aquasana AQ 5300 3 stage
under sink water filter

best under sink water filter
Reverse Osmosis System
Leaves essential minerals
Designer faucet
Easy filter replacement
Indicator light/sound
Battery for light included
Nahla Pure ultra high capacity
direct connect under sink water filter

best under sink water filter
Heavy Metals
Filter life is 3 years
Made in the U.S.A.
Direct connect
Single filter
3M Aqua-Pure
under sink water filter

best under sink water filter
Heavy Metals
Auto shut-off valve
10 year limited warranty
Saddle valve assembly
Dedicated faucet
Color-coded tubing
3M Filtrete
under sink water filter

best under sink water filter
Single filter
6 month lifespan of filter
Push-in fittings
Easy installation
Made in China

Home Health Living’s Top Pick:

APEC – Top Tier – Built in USA – Ultra Safe, Premium 5-Stage Reverse Osmosis Drinking Water Filter System (ROES-50)

What is the best water filtration system?

The Apec reverse osmosis water filter system is one of the best under sink water filter systems on the market today and is Home Health Living’s “Top Pick”. It is a top rated under sink water filter on Amazon, and has had many positive reviews.

Its 5-stage reverse osmosis filtration process means that the water is purified from many different contaminants, including arsenic, chlorine, lead, heavy metals, viruses and bacteria. It is also one of the few water filters available that filters out fluoride. These types of systems are also referred to as an under sink ro system (ro stands for reverse osmosis).

The filters used are carbon blocks which, unlike inferior GAC filters, absorb more contaminants, making your water purer.

The first filter is a premium quality micro sediment filter to remove rust and dust particles. The second and third filters are premium quality micro extruded carbon blocks that remove odors, tastes, chlorine, volatile organic chemicals and other contaminants.

The 4th filter is a US-made high quality reverse osmosis membrane. This membrane is used to further remove any remaining contaminants that couldn’t be removed by the previous filters. This includes arsenic, lead, fluoride and heavy metals.

The Apec is Home Health Living’s top pick for under sink water filters because of the high performance of the membrane filter. Other reverse osmosis under sink water filtration system reviews have a similar opinion.

Once the water has been through these filtration processes, it is then stored in the tank, ready for you to drink. Once the water leaves the tank, it passes through one final filtration process. This is the 5th filter, a refining coconut carbon filter, to remove any possible impurities and taste resulting from being in the tank.

The package comes with a high quality chrome faucet that is lead-free, as well as a tank. Tubing is of food grade standard that has been approved by NSF and FDA, while all fittings are leak-free. The system comes with its first set of filters already installed.

The system has been designed to fit inside a standard kitchen cabinet. It has a versatile feed water adapter suited to either a 3/8” or ½” connection without needing any additional components.

Replacement filters are easily available and the filters are easy to change on your own. The first 3 filters should be changed every 6-12 months, the membrane filter changed every 2-3 years while the coconut carbon filter should be changed every 3-5 years.

Apec is manufactured in the U.S.A. by an American company. It has a 1-year guarantee and lifetime technical support available.


iSpring RCC7 Built in USA WQA Gold Seal Certified 5 Stage Reverse Osmosis Water Filter, 75 GPD,

The iSpring is another top water purifier with a 5 stage filtration process that removes up to 99% of all contaminants, bacteria, viruses and TOC.

The 1st filter is a polypropylene sediment filter held inside transparent housing. This helps you see when the filter is too dirty and requires replacement. The filter removes sand particles, dust and rust. The 2nd filter is a GAC filter, which is granulated activated carbon. This removes unpleasant odors (such as the “rotten egg” odor commonly found with drinking water), tastes, colors and cloudiness. The 3rd filter is a CTO carbon block filter, which stands for “chlorine, taste and odor”.

The 4th filter is a reverse osmosis membrane that further removes any remaining contaminants, as well as fluoride. The 5th filter is a “Total Polishing Inline Carbon” filter which removes any final tastes or odours as the water is being drawn out of the tank.

Extra features are the automatic shut-off valve and the check valve. Both of these functions work together to ensure that once the tank is full of water, it shuts off automatically. There is also a water detector/flood alarm that works like a smoke detector but detects if there is water leaking.

Also included in the package is an EU-style designer faucet made from brushed nickel with a stainless steel look, and a ceramic valve. The tubing is food grade standard and comes in different colors to make it easier for you to install. All the installation hardware is included so that you don’t need to buy anything and can simply install the system.

There is a 1-year guarantee, with spare parts available to purchase if required. A YouTube video is available to help with DIY installation.

For more information about different iSpring under sink water filters, read our review of the best iSpring under sink reverse osmosis water filters. 

Woder® 10K-GenII Ultra High Capacity Direct Connect Water Filtration System

The Woder 10k-GenII is an upgrade of the original Woder 10K under sink filtration system which is a best seller on Amazon.

This is a great under sink filter system for people that require something very easy and quick to set up. It already comes as a completely assembled kit ready for installation, which takes about five minutes.

Woder filters are built with NSF approved materials and undergo rigorous testing to ensure quality standards are met. The Woder 10K filter is classified as a class 1 premium quality filter which exceeds industry standards ANSI and NSF.

The filter lasts up to 10,000 gallons which is, on average, 3 years of use. The Woder 10K filter has the highest capacity of any similar filter on the market. This makes the Woder filter a more economical choice, as you do not have to replace filters on a regular basis- less filters going to landfill, and more money in your pocket!

The Woder under sink filter removes chlorine, heavy metals (eg. lead), bad tastes and odors as well as volatile organic compounds (VOCs). The nature of the filter means that unlike under sink filters that use reverse osmosis membranes, the Woder 10k filter does not remove essential minerals found in drinking water.

As expected with an under sink water filter system, after installation, there is a small reduction in the water flow rate.

The unit has a built-in valve that shuts off the water flow when you are unscrewing the filter to change it. This means no leaks! There is no need to replace the entire system after 3 years, simply purchase a cost-effective replacement filter on Amazon.

Aquasana AQ-5300.55 3-Stage Under Counter Water Filter System with Brushed Nickel Faucet

The Aquasana 3-stage under sink water filter system contains 3 filters that remove heavy metals such as mercury and lead, cysts (eg. giardia and cryptosporidium) and chemicals such as herbicides, pesticides and volatile organic compounds (VOCs). It removes up to 97% of chlorine.

However, the design of the filters means that it does not remove any of the essential minerals required for good health.

The Aquasana under sink filter system meets ANSI and NSF standards. The filters’ capacity is approximately 600 gallons which gives you an estimated life of 6 months.

There is an indicator light and sound that lets you know when it is time to change the filters. The indicator is battery operated (a battery is included in the package). Replacing the filters is very easy, using a “push up and twist” method to both remove and install the filters.

It comes with a dedicated faucet and you can choose whether you would like a faucet made of chrome, brushed nickel or oil rubbed bronze. The flow rate of the water is 0.5GPM. The spout has a height of 7 inches with a spout reach of 4.75 inches.

As the system comes with a dedicated faucet, you will end up with two faucets- your regular faucet (which can still be used for regular tap water), plus the Aquasana faucet that will need to be placed through a separate hole either on your sink or countertop. If you do not have a second hole for the faucet, you will need to drill one.

The package comes with the filters and all connection and installation hardware.

The Aquasana has a 1-year warranty.


Ultra High Capacity, Premium Under Sink Direct Connect Water Filter (10,000 gallons/THREE YEARS) by Nahla Pure

The Nahla Pure under sink water filter system is an easy to install, all-in-one water filter. It has a capacity of approximately 10,000 gallons which is equal to around 3 years of use. As only one filter is required, it is a cost effective option.

The activated carbon filter removes unpleasant tastes, odors, chlorine, heavy metals and volatile organic compounds (VOCs). It does NOT remove fluoride.

What we like about the Nahla Pure under sink filter system is that it does not take up much space at all and unlike reverse osmosis systems, there is no water wastage. The Nahla Pure is a great option for people who are renters or move quite frequently, as there is no need to install a dedicated faucet. The Nahla Pure filter simply connects to your existing standard cold water line.

The filter system is made in the U.S.A.


3M Aqua-Pure Under Sink Water Filtration System – Model AP-DWS1000

The 3M Aqua Pure under sink filtration system uses a two stage carbon filtration process to remove sediments, pesticides, chlorine, lead, cysts, mercury, asbestos and volatile organic compounds.

There is a built-in shut off valve that shuts the system down when it is time to change the filters.

The system comes with a dedicated faucet for you to install, and all required hardware is included, as well as two filters. However, some consumers have complained that the package only includes a ½” adapter when many sinks have 3/8” connections. If this is the case for you, just visit your local hardware store (or Amazon) for an appropriate adapter that suits your sink connection.

Replacement filters can be purchased through Amazon and are easy to install and remove, using a twist-off function.

There is a 10-year limited warranty available.


3M Filtrete 3US-PS01 Undersink Water Filtration System

For those who are on a small budget and cannot afford to invest in an expensive water filter system, the 3M Filtrete under sink water filter is a great option.

It is a single filter that can easily be installed. The filter can remove parasitic cysts if it is found in your water. The filter also reduces chlorine taste and odor as well as removing most sand, sediment, soil and rust.

There is no dedicated faucet required and the filter has a 6-month lifespan.

Most consumers report that there is no reduction in water flow after installation of the 3M Filtrete.

The 3M Filtrete under sink water filtration system is manufactured in China.


How to choose the best under sink water filter system

Advantages of under sink water filters

One of the benefits of having an under sink water filter is that it is out of sight, and not taking up valuable counter top space. The filters last longer than those of a water filter pitcher, and there are under sink water filter brands that can filter out fluoride.

Many under sink water filters have a number of filters that can remove many contaminants, viruses and bacteria. The quality of water after filtration is far superior to the water in a water filter pitcher or countertop water filter.

Not only is water quality much better with an under sink water filter, most filter systems are of a high quality and standard and are made in the U.S.A.

Purchasing the best under sink reverse osmosis water filter will help you remove even more contaminants than a filter system without reverse osmosis technology.

By using an under sink water filter system, you are helping the environment by not purchasing filtered bottles of water. That’s less plastic going to landfill!

Children, and those who are frail or elderly, may find it difficult to carry or pour water from a water filter pitcher. Having filtered water on tap is much easier for everyone.

Some people purchase an under sink water filter system to use for their aquariums, because the water quality is superior, which is important for healthy fish.

Disadvantages of under sink water filters

Under sink water filters are generally much more expensive to purchase than water filter pitchers.

You also need to consider the cost of replacement filters. Unlike a water filter pitcher that only uses one filter, some under sink water filter systems can use up to 7 different filters. Some of these filters need to be replaced at different intervals, so it can be quite expensive to run an under sink water filter system.

The good news is that some filters do not need to be replaced as often as others. Generally speaking, under sink water filters last longer than water pitcher filters.

Fortunately, there are replacement filter packages which work out to be more cost effective than buying the filters individually.

If you are not a handy person, you may need to factor in the cost of installation by a qualified plumber. Changing the filters is fairly easy for the average person to do.

There is also a special faucet included with the purchase of an under sink water filter system- again, this is something you will need to install yourself (or you can hire a professional). Fortunately, most of the under sink water filter systems come with stylish, high quality faucets.

Users of under the sink water filters often complain that the flow of their tap water is much slower due to the filtration process. Some also complain about the amount of “wasted water” as a result of purification. The performance of your under sink system depends on the water pressure- if source water pressure is too low to begin with, the membrane from a reverse osmosis system cannot function as efficiently. Therefore, the water purity level will not be as great. One way to overcome this problem is to purchase and install a boost pump which increases the water pressure and results in better quality water. This is recommended if your source water pressure is less than 45psi.

Reduced water flow is still not as frustrating as a filter pitcher when you are required to wait for the water to drip through the filter!

If you are concerned about the time it may take to fill a glass of water due to the filtration process, some under sink filters come with a tank. The tank fills itself up with filtered water so that it’s ready for you. One example of a water filter with a tank is the iSpring RCC7.

Why choose an under the sink water filter over a filter pitcher

The amount of filtered water available for you at any one time depends on the size of the water filter pitcher. Using an under sink water filter means that you will have more filtered water available to drink than if you were relying on a pitcher. This is a better choice for families and large households.

Using an under the sink filter system means that you can fill your sink with fresh, filtered water to use for other purposes such as washing the dishes.

Reverse osmosis technology means that you can use an under sink water filter for fluoride removal– this is not possible with the filters used in a water pitcher.

Click here to read more about water filters that remove fluoride.

Replacement filters for under sink water filter systems

As mentioned before, an under sink water filter system can use up to 7 different filters. They will need to be replaced on a regular basis. If they are not replaced, then your water will not be filtered.

Since a number of different filters are used, it can become quite expensive over the long run to use an under sink system. Fortunately, not all of the filters need to be replaced at the same time.

Generally, the filters used in the first three stages of the filtration system need to be replaced the most often, usually around every six months. This is because these filters work the hardest and remove many contaminants.

The reverse osmosis membrane only needs replacing every 2-3 years, while the coconut carbon filter only needs replacing every 3-5 years. By the time the water reaches the coconut carbon filter, most of the sediments and contaminants have already been removed, so it doesn’t need to work as hard and can last longer.

How to know when your filter needs to be changed

Some systems have the 1st filter housed in a transparent cartridge so that you can see when the filter is becoming too dirty and requires a replacement.

Other than following the general guidelines that we have included above, you can also use a TDS tester that measures the dissolved solids present in your water. The higher the TDS level, the higher the dissolved solids in your water.

You can measure the TDS level prior to installing an under sink filter system to give you an idea of how clean your water is. Then once you have installed the system, take another reading to check the level of quality of the water after filtration. You can use this reading as a benchmark- over time, once the TDS level increases, then you know it is time to change the filters.

Here is a TDS tester we recommend:

HM Digital TDS-EZ Water Quality TDS Tester, 0-9990 ppm Measurement Range , 1 ppm Resolution, +/- 3% Readout Accuracy

In conclusion…

Under the sink water filter systems are a great way to have filtered water available on tap for you whenever you need a drink or to make yourself a coffee.

There are different types of under sink filters: from simple one or two step systems with minimal filters used, to more complex systems with up to 7 different filters.

The best one to choose for your home depends on your own needs, your budget and your current water quality. In many towns and cities, the water quality levels are quite good. While other towns and cities may not have as good quality water. It’s a good idea to find out the water quality of your water and use this as a guide to help you decide which filter system to buy.

If your water quality is not very good, then choosing the best under sink reverse osmosis system such as the Apec T or iSpring RCC7 would be a good option. A reverse osmosis system is the best water filter for fluoride due to the membrane filter. In our opinion, the Apec T is the best reverse osmosis water filter for 2016.

If your water quality is quite good, then a simpler system such as the 3M Aqua-Pure would be suitable. If you are someone who moves house a lot, then a basic system such as the Nahla Pure would be the best choice.

Regardless of which under sink water filtration system you decide to buy, you are making a healthy and environmentally friendly decision.

Disclaimer: This post contains affiliate links. If you click on one of these links and make a purchase, we pay be paid a small commission at no extra cost to you. Thank you for supporting our family!

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