The Best Under Sink Water Softeners – 2022

Don’t know what under sink softener to buy? Well, no problem, because in this post I have reviewed the 5 best under sink water softeners. A water filtration system of this kind can drastically improve the taste and quality of drink water in your household.


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ClearelyFiltered 3-Stage Under the Sink Water Filter System

WaterDrop Under Sink Integrated Dual Carbon Filtration System

Aquasana 3-Stage Under Sink Water Filter System

Crystal Quest SMART Under Sink Water Filter System

Epic Smart Shield Three Stage Water Filter

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#1 ClearelyFiltered 3-Stage Under the Sink Water Filter System

under sink water softener

The ClearlyFiltered 3-stage filter for under the sink is a very powerful system that can remove over 232 contaminants, and also get rid of pollutants, and chemicals. This means you’ll enjoy clean filtered water and gain all the benefits from the minerals.

Compared to some other systems, this one has a smart feature that recognizes the beneficial minerals and does not remove them.

It’s also very easy to install, and it’s compatible with your existing faucets.


  • Potent Filtration – This system features a three-stage filtration process that can over 232 contaminants from water. Not only does that, but no remineralization is needed, meaning all the good nutrients and minerals can pass through. And if you’re having lead and fluoride problems, its technologies can target and remove them from water.
  • High-Efficiency System – This filter for under sink is more efficient than some other systems. It is about 75% more efficient, which drastically reduces the wastewater.
  • Premium Materials – Many customers have reported long durability for the filter cartridges. The cartridges can last 2000 gallons which means changing the filter once a year.
  • Minimal maintenance – No intense maintenance is required for this under sink filter. The cartridges feature a twist-off-twist-on design, allowing you to easily replace them.
  • Easy installation – You don’t need to call a plumber to install this system, you can do it easily by yourself, It should only take 15 minutes. Also, it will work with your current sink, and it does not take a lot of space.


  • Can remove many types of contaminants
  • It is easy to install
  • No heavy maintenance is required
  • Durable filters

Cons :

  • The price is more expensive than other systems.

#2 WaterDrop Under Sink Integrated Dual Carbon Filtration System

under sink water filter

WaterDrop is a modern under-sink water filter that can remove various types of contaminants and heavy metals. Its design is very eye candy yet compact you’ll surely impress your friends with it.  

It’s not only a good-looking device, but it also has a lot of modern features making your life easier.


  • Excellent Filtering – This under-the-sink filter has a lot of power, thanks to its 3-stage DC system it can produce top-quality drinking water. You can get rid of various contaminants that decrease the taste of water and negatively affect its quality.Such as chlorine, chloramine, heavy metals, organic & inorganic pollutants, and more.
  • Latest technology – This system has some smart features that will make your life easier. You won’t have to worry much about maintenance since it has life indicators of the filters telling you exactly when you need to replace them. Another great feature is its integrated waterway preventing leaks and making it easy to replace filters without disconnecting the water supply.
  • Compact & Easy To Install – This modern water filter has a compact design making it easy to place it under the sink. And you don’t need to be an expert to install it, it is made to be installed by anyone in about 30 mins or less. Changing filters takes about 3 seconds if you wondered. 😊
  • Economical – You will be pleased to hear that filters are also made from premium grade materials, and you will enjoy clean tasty water for a long time. Their lifespan is around 12 months which is a great period compared to other filters. Also, this system comes with a battery so electricity is not needed under your sink.


  • This system can get rid of most contaminants that affect the taste and quality of drinking water
  • The filters will last a long time and are cheap to replace
  • It has a compact design and uses a battery instead of constant electricity
  • It’s easy to install


  • It is not ideal for highly contaminated water
  • Some people might find the replacement filters pricey

3# Aquasana 3-Stage Under Sink Water Filter System

under sink water filtration system

The aquasana filter for under sink is another impressive product that can remove 99% contaminants from water. This system has a high flow rate, it is made from premium grade components and its filters are easy to change.

You also won’t have to call a specialist to install it since it can be done by everyone.


  • Powerful filtering capacity – Contaminants, cysts, chlorine, and pesticides can reduce the quality of water. The aquasana filter guarantees that you’ll have clean drinking water. It can remove over 77 contaminants from water. You’ll have all the benefits of clean water readily available at your hand, all you have to do is press on the faucet.  It also comes will a pre-filter that will get rid of rust and sediment.
  • Improved water and foods taste – This filter can greatly improve the taste of drinking water since it can remove harmful contaminants and keep the beneficial minerals that improve the taste of water. Foods will also taste better because filtered water can enrich and bring more natural flavors. Your taste buds will thank you for cooking with filtered water.
  • Eco-Friendly – You can be assured that no chemicals are added during the filtration process, you’ll only enjoy the benefits of pure tasty water. You will also ditch plastic water bottles and reduce your carbon footprint on this planet.
  • Trusted Product – This filter for under sink has been tested by third-party laboratories assuring its quality and performance. NSF has approved this filter for the NSF/ANSI 42, 53, and 401 standards. These are the top-notch standards for water filtration systems.


  • This filter can remove over 77 types of contaminants from water
  • It is approved by the NSF
  • Comes included with a faucet
  • Modern looking product


  • Some users have reported leaks caused by this system
  • Filter availability may be limited

#4 Crystal Quest SMART Under Sink Water Filter System

under the sink water filter

The SMART water filter system is an ideal device for under sink usage. It is designed for homes, offices, and apartments. What’s really great about this device is that it can be customized based on your filtering needs. You can have up to three filter cartridges for various contaminants.


  • Leak detector – Floods can happen for various reasons, it can be either installation problems or a problem you can’t even predict. This softener for under sink comes with a handy flood prevention valve and a leak detector, which will make sure that it won’t happen to you.
  • High-quality Filter Media – This water softener for under sink features premium-grade media ensuring maximum performance and efficiency. The media used for this device is made using the latest technology for water filtration. It is made out of two high purity alloys ensuring that contaminants won’t stand a chance, they’ll get oxidized right away.
  • Three Stages Of Filtration – You can be assured that you’ll have clean drinking water since this system can have up to three stages of filtration. Which can remove chlorine, chloramine, sediment, sand, dirt, and other contaminants such as VOCs, pesticides, herbicides, and more.

How does it work?

The first stage is the aforementioned premium media which will get rid of chlorine. The second step is a granulated activated carbon (GAC) filter, which can remove various contaminants that can give water a bad taste. And the final step is a mix of coconut shell and catalytic GAC to remove all traces of chloramine, chlorine, and byproducts. All the filters will also help to extend the life of your system.


  • Premium grade media
  • Three stages of filtration
  • Easy to install and maintain


  • More expensive than others

#5 Epic Smart Shield Three Stage Water Filter

water filter for under sink

The epic smart shield is an eco-friendly softener for under sinks that uses carbon-activated filter media to get rid of over 70 contaminants. The manufacturer claims that it has an efficiency of 99.9% of contaminants removal.

It has been fabricated in the USA and tested by independent laboratories in the USA in order to assure its quality and functionality.


  • Epic Filtration – This softener system is capable of removing 70 harmful minerals from water with an accuracy of 99.9% and fluoride with 97.88%. Other traces of heavy metals, chlorine, and pollutants are also sure to be removed.
  • Eco Friendly – If you care about saving the planet, then you’ll rest easy knowing that each filter is 100% recyclable. And when it’s time to replace it you have already replaced around 1500 plastic bottles. It is also 100% BPA-free, it’s made from non-leaching Tritan plastic. You can recycle your used filter with 7# plastics or with hard to recycle plastics.
  • Long-lasting filters – Filters for this system can last a long time, but it depends on your household size. A single person can change the filters every 16 months, a couple around 12 months, and a family between 9 and 12 months.
  •  Certified Quality – All epic water filters have been tested globally for performance and quality. Both in laboratories and on the field in the USA, UK, Japan, and Australia. All the testing is assuring you the cleanest and purest water for drinking.


  • Can remove over 70 contaminants without leaving traces of other harmful impurities.
  • It does not remove the beneficial minerals
  • It has been tested globally by different laboratories
  • It is kind to the environment


  • Some users have reported decreased pressure


These are the five best softeners for under sink, all of them are capable of removing plenty of contaminants and are built using premium materials. By using a water filter system not only you’ll save the planet by not using plastic bottles, but you’ll also improve the quality of drink water for you and your family.

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