14 Best Under Sink Water Filter That Actually Works

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In a Hurry? Check Our Top 3 Picks!

  1. Filtrete Under Sink Filtration System
  2. CuZn UC-200 Under Counter Water Filter
  3. Woder WD-S-8K-DC Water Filtration System
Best Under Sink Water Filter

Some of you may notice some problems in the water coming from your faucets. The taste may be different, or it smells bad and sometimes both. These things indicate that the water quality in your house is not very good and can be risky for your health. To fix this problem, you can use the best water filter. It will help in giving the best water treatment solution for your water supply.

But with so many under sink water filters available in the market, which one will you choose? It should be efficient, convenient and can reduce problems in the water. With those in mind, you can now search for the best water filter for your home. To help you with this task, we reviewed 14 best under sink water filter. 

Here is the List of 10 Best Under Sink Water Filter

  1. Filtrete Under Sink Filtration System
  2. CuZn UC-200 Under Counter Water Filter
  3. Woder WD-S-8K-DC Water Filtration System
  4. Culligan US 1 Undersink Water Filtration
  5. Aquasana 3-Stage Under Sink Water Filter
  6. Culligan Undersink Drinking Water Filtration System
  7. APEC 3 Stage Under-Sink Water Filter System
  8. Culligan US-600A Undersink Drinking Filtration System
  9. iSpring Tankless Drinking Water Filtration System
  10. 3M Aqua-Pure Under Sink Drinking Water Filter System

The 14 Best Under Sink Water Filter Reviewed

1. Filtrete Under Sink Filtration System

best under the sink water filter

One of the most efficient under sink water filters available in the market is the Filtrete Advanced Under Sink Quick Change filter. It can remove about 99 percent of protozoa and bacteria in the water supply. The unit can also take away any cysts, sediments, and solids in the water. 

Moreover, it can remove ninety-six percent of chlorine and will not leave any taste of the compound at all. One of its disadvantages is its water pressure is not that good. It can give about 1.5 GPM, but it can be improved by buying a separate water pump. It doesn’t need any special tool when installing just a screwdriver and a wrench. Its filters can be changed once every six months.

PROS

  • It’s easy to install.
  • It can remove sediments, chlorine taste, and odor.

CONS

  • It may not last for six months if the water supply is too much contaminated

Why You Should Choose

A water filter that can remove  99 percent of protozoa and bacteria in the water supply which is essential to reduce possible sources of diseases

2. CuZn UC-200 Under Counter Water Filter

One of its good points is its capacity to filter water. It can produce about 50,000 gallons of freshwater, which can cover five years of use. 

Now on the filter, it has an exceptional micro sediment membrane coupled with a KDF – 55 Coconut Shell Carbon. These two will make sure that no lead, nickel, chromium, and other harmful metals will go in the water. Remember that it can only use municipal water supply and not well water. The flow rate is 2 GPM, which is very good for an under sink water filter and can easily be installed under the sink. There are tutorial videos online and technical support available for any problem you encounter.

PROS

  • It has an easy installation process.
  • It has an exceptional micro sediment membrane coupled with a KDF – 55 Coconut Shell Carbon
  • The large capacity output of about 50,000 gallons

CONS

  • Its container is a bit large and might be a problem if you have a small space in the cabinet.

Why You Should Choose

It can produce about 50,000 gallons of filtered water that last long up to 5 years. You will not have a hard time installing this device in your kitchen.

3. Woder WD-S-8K-DC Water Filtration System

best water filter

This water filtration system is not costly and can be installed in the house or an RV. Though it is cheap, its NSF certified that ensures buyers of clean drinkable water for a long time. Its downside is that it can only use municipal water. It can remove chlorine, lead, chromium, heavy metals, odors, and contaminants.

The Woder WD-S-8K-DC Water Filtration System can’t use any other water supply, and can only use water with a temperature between 43 – 100 degrees. This device should last for about three years of use or produce 10,000 gallons of water. The unit can also be quickly and easily installed and includes high-quality tubing. Lastly, its filter can remove up to 99 percent of harmful chemicals. It can keep all healthy minerals the human body needs.

PROS

  • It has a long-lasting filter. Only changed the filters once every three years. 
  •  A capacity output of  10,000 gallons of water

CONS

  • This water filtering system may reduce water pressure by 20 percent. It will be a problem if your house has weak water pressure.

Why You Should Choose

A low cost under sink water filter that will help in removing chlorine, lead, chromiums, and other contaminants. It can produce 10,000 gallons of clean water for the whole family to use. 

4. Culligan US 1 Undersink Water Filtration

under sink water filter

This Culligan US 1 EZ-Change Undersink Drinking Water Filtration System will help in giving you a clear, clean, and great tasting water every time you want to drink or in cooking. It has one primary filter that will filter about 3000 gallons of water for one year before it needs replacing. It is easy to install, and everything you need to install is included in the box already. It will remove any odors, bad taste, and contaminants in the water. 

PROS

  • A high-quality filtration device
  • Budget-friendly
  • Filter capacity is about 3,000 gallons of water.

CONS

  • Need to pay for additional components required to fit ⅜ inch hose line.

Why You Should Choose

It is a high-quality filtration device that will surely make your water clean and pure. It is budget-friendly and has a filter capacity of about 3000 gallons of water. 

5. Aquasana 3-Stage Under Sink Water Filter

 The Aquasana 3-Stage Under Sink Water Filter System uses three stages of filters in making sure that the water is clean and pure. The first filter has a 20-micron screen that will help remove the dirt, sediment, and sand. The second one utilizes an activated carbon filter to get rid of chlorine. Aquasana 3-Stage Under Sink Water Filter System also takes away pesticides, viruses, and herbicides in the water. 

Lastly, the third filter is a catalytic carbon filter that uses ion exchange to lessen possible heavy metals present in the water. The unit is also affordable and can easily be installed. The screen can produce 10,000 gallons of water within six months before changing its filter. The disadvantage in this device is the filter’s life, which only lasts for six months, and its flow rate that stands at 0.5 GPM only.

PROS

  • It has an excellent and efficient filtration system despite its cheap price.
  • It can remove 99 percent of sediments, soils, cysts, and sands.
  • It will rid out 96 percent of bad smell and taste.

CONS

  • It doesn’t last for 6 months. It will only last four months if the water is contaminated too much. 

Why You Should Choose

It is a cheap but high-quality filtration device. It will take away all harmful chemicals and contamination in the water supply.  

6. Culligan Undersink Drinking Water Filtration System

It will make sure that your water supply is free of chlorine, odorless, and tasteless. It has one filter that can clean up to 500 gallons of water. The factory filter can only remove chlorine and few other contaminants, but what’s nice about it is you can have a different cartridge using the same system. 

Culligan US-EZ-4 EZ has an LED indicator that will inform you to change its filter. Its downside is that it can’t produce a massive amount of freshwater . The filtering unit only has 0.5 GPM, and its water pressure is only 60 PSI. It can be easily installed, but the connection may leak, so it needs tightening.

PROS

  • Changing the filter is easy
  • Remove sediment, lead, and cyst
  • It has a LED indicator

CONS

  • Flow rate is only 0.5 GPM
  • Water pressure is only 60 PSI

Why You Should Choose

It will remove the odor, bad taste, chlorine, and other organic contaminants in the water. It had a led indicator informing you about filter replacement.

7. APEC 3 Stage Under-Sink Water Filter System

APEC 3 Stage Under-Sink Water Filter System

APEC WFS-1000 is also one of the most well known and best under the sink water filters in the market. It has three filtration stages making the water clean with no contaminants. The filtering unit can take away any sediments, chlorine, odors, and other pollutants. It has an easy installation process, and the filter even has pre-drilled holes so it can be easily mounted. The device provides excellent water pressure even though the water goes through three different filtration stages. 

PROS

  • It includes a high-quality stainless steel faucets
  • The filtering unit is easy to install and mount
  • A well-known brand for under sink water filter

CONS

  • It only has a stainless steel type of valve, and it might not match the sink finish.

Why You Should Choose

It will do a great job of cleaning your water supply for you. It has a three-stage filtration system that will remove any harmful chemicals and contaminants in the water. 

8. Culligan US-600A Undersink Drinking Filtration System

This decent filtration device will do its job of cleaning the water efficiently. The price is right for any household that needs clean water. It is made in the USA and certified by NSF/ANSI. It will surely give you odorless, tasteless, and no chlorine water. Definitely one of the best under sink water filter.

The Culligan US-600A is compatible with different filters, and you can replace the screen after a full year of use. The device can’t filter hot water because the system can endure a maximum temperature of 100 degrees. Everything you need for installation is included in the device like the faucet.

PROS

  • It’s cost-efficient
  • It can get rid of odor, bad taste, and chlorine. 

CONS

  • It can only use cold water

Why You Should Choose

It is a certified under sink water filter that will help you get rid of harmful chemicals in your water. You can change a different kind of filter element depending on what’s best in your house. 

9. iSpring Tankless Drinking Water Filtration System

The iSpring US31 3-Stage Drinking Water Filtration System is one of the best under the sink water filter in the market with its easy installation and a three-stage filtering system. The drinking filtration system is equipped with the regular 10-inch sediment filter and an additional two layers of CTO carbon block filters. With these many filtration layers, you will be ensured that you can get improved water when you put it underneath your kitchen sink.

It was designed to filter contaminants with sizes larger than 5 micrometers regardless of nature. With this filter, it can get rid of pesticides, chlorine, and herbicide in your water, producing output without smell. The screen includes 11.25 inches tall iSpring faucet that you can use accordingly.

There is a key in the set which can be used to open the filtering system when you need to change the filter inside. Make sure to position the screen upright to maximize its use. After these, you can now use your newly installed under sink filtering system.

PROS:

  • Comes with a brushed nickel faucet
  • DIY installation
  • Has three filters that will effectively remove sediment, chlorine and organic contaminants
  • It comes with a valve that buyers can use 

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CONS:

  • Not very versatile – you need at least 11.25 inches of space for the faucet. Also, the cartridges have to stay upright and never horizontally.

Why You Should Choose

The iSpring US31 3-Stage Drinking Water Filtration System has three layers of filtering systems that can prevent contamination of harmful compounds in your water supply.

10. 3M Aqua-Pure Under Sink Drinking Water Filter System

best under sink water filter system

If you’re looking for the best under sink water filter system, then you should check out the heavy-duty 3M Aqua-Pure Under Sink Full Flow Drinking Water Filter System. This filter system prides itself on its large capacity output of 6000 gallons of cleansed water before needing replacement. The cartridge is top-notch, while it has an excellent flow rate of 2.5 GPM and can accommodate up to 125 PSI.

Due to its high tech designs, harmful chemicals will be removed from the filtrated water without sacrificing beneficial substances such as calcium. The sanitary quick-change technology of 3M Aqua-Pure Under Sink filter allows user hassle-free and painless experience when replacing the screen. However, you need to get an adapter for its 3/8-inch NTP connection fittings, which is not compatible with lines having ¼-inch sizes.

PROS:

  • Large capacity of the output of about 6000 gallons of cleansed water
  • The excellent flow rate of 2.5 GPM and can accommodate pressure up to 125 PSI.
  • It can filtrate harmful chemicals without sacrificing beneficial substances in the water.

CONS

  • You need to provide an adapter for its 3/8-inch NTP connection fittings 

Why You Should Choose

The 3M Aqua-Pure Under Sink Full Flow Drinking Water Filter System is equipped with a heavy-duty filtering system that can handle a large volume of water before needing replacement. You should check out this filtering system if you’re looking for a filter that can handle a big job.

11. Epic Smart Shield Under Sink Water Filter System 

Best Under Sink Water Filter

Epic Smart Shield is seen as a top notcher in many under sink water filter reviews due to its outstanding performance. The filtering unit boasts contaminant removal of about 99.99 % to 98 % with proven results and verified methods of testing. Moreover, Epic Smart Shield can filter harmful compounds such as Lead Chlorine MTBE TTHM, VOCs, and pharmaceutical byproducts and biological contaminants such as cysts.

The Epic Smart Shield Under Sink Water Filter System also offers a large capacity output of about 650 gallons, which can last even after one year of usage. Although all stages of filtering are done by one filter, the effectivity of the filtering system makes up for it, as shown by the results of the contaminant removal test result provided by the company. Not all companies will show the contaminant removal test result of their product, but Epic provides a detailed list of the outcome, especially the removal percentage. It just shows how confident the company on its products.

PROS

  • Top-notch filtering system
  • Honest contaminant removal test results from the manufacturer
  • The HIgh capacity output of about 650 gallons of cleansed water

CONS

  • The product is relatively expensive due to its high tech filtering system.

Why You Should Choose

If you’re looking for effective products and honest good reviews, you should buy Epic Smart Shield Under Sink Water Filter System for its top-notch filtering unit and large capacity output.

12. Doulton SuperCarb Under Sink Filter System

best under sink water filter system

The Doulton W9330958 SuperCarb Under Sink Filter system utilizes a cartridge filter to remove harmful compounds in your water. It’s one of the best under sink water filter systems due to its four stages of filtration to ensure the effective removal of contaminants. The first stage includes a carbon filter that removes floating particles on the water, such as bacteria and parasitic cysts. The second stage is characterized by sterilization, which has antibacterial properties. The third filter is responsible for the removal of chlorine and other organic substances, while the fourth stage reduces the amount of heavy metal in the water.

Due to the different stages of filtration, Doulton W9330958 SuperCarb Under Sink Filter system produced clean and crisp water without a hint of bad smell. The durability of the filter is also excellent because of its stable housing and thick tubing.

PROS

  • The Filter comes with stable housing and thick tubing to ensure durability
  • The unit offers four stages of filtration to ensure the production of clean and crisp water.

CONS

  • Some parts needed for installation are not included in the box and should be bought separately.

Why You Should Choose

The Doulton W9330958 SuperCarb Under Sink Filter System ensures that it can produce clear and crisp water due to its stages of the filtration system. 

13. Clearly Filtered Filtration System

under sink water filter

If you’re someone looking for easy to install Under Sink Filter System, then the Clearly Filtered Triple Stage Kitchen Faucet Filtration System is perfect for you. The installation is only done by connecting water lines from the filtering unit, which does not require drilling or separate spigot. The ease of use is suitable for homeowners, temporary kitchenettes, and renters.

Despite its laid back installation, its filters can remove 220 known contaminants such as chlorine and fluoride. It also produces clear water that is odorless and tasteless, which is suitable for cooking. Moreover, the unit is 100% American made EPA & NSF certified. The filter can last up to 1 year, and the filtering system comes with a lifetime warranty froM the manufacturer.

PROS

  • The filter can last up to one year of usage.
  • Installation is pretty straightforward and perfect for homeowners and renters.
  • It can remove 220 known contaminants from your water.

CONS

  • It’s not equipped with a bypass valve.

Why You Should Choose

The filtering system is easy to install and perfect for renters and homeowners. The top-notch filter can remove 220 contaminants from your water to produce clear, odorless, and tasteless water.

14. iSpring Water Filters

under sink water filter reviews

If you’re looking for an affordable but reliable filtering system, you should check out the iSpring WCC31 Water Filters. Like its other iSpring predecessors, it is equipped with three cartridge filtering systems to remove sediment, harmful compounds and odour. The highest capacity is about 2000 gallons, and the lifespan of the filter is about one year of usage. With its top rate features, the iSpring WCC31 Water Filters really give exceptional value for money.

PROS

  • The unit is relatively affordable but with reliable features
  • It is equipped with three cartridge filtering system to ensure removal of contaminants 

CONS

  • Some of the parts are not included in the box and must be bought separately

Why You Should Choose

The iSpring WCC31 Water Filters is perfect for people on a tight budget but looking for a reliable water filtering system.

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Buying Guides: What to Look for in the Best Under Sink Water Filter

Here are some features you need to look out to get what you really need in the best under sink water filter 

Water Pressure. In choosing the best under sink water filter, it is essential to test its water pressure. No one wants to wait for a long time just to fill a single glass of water, especially if you are thirsty. The device should provide you with good water pressure and will also help if your current water pressure is terrible. However, remember that good water pressure will lessen its time in filtering the water. Making some contaminants passed through, which is terrible, especially if your water is severely contaminated. 

Filter Capacity. Filters vary depending on its components; some may be good in taking away some contaminants while others may be good at getting rid of most the pollutants. Other filters but can’t remove a specific substance because it lacks material. 

This is why it is better to always use a home water testing kit before getting a filtration device. Once you verify the problem in the water, you may now start searching the best under sink water filter that will get rid of the contaminants you found in your water.

Easy to Install and Change its Filter. One of the things you should ask before buying the water filter is the installation process. It’s better if you can easily mount your device under your sink because this will free you on any problem. It will also prevent you from damaging the water filter’s part or hiring someone just to install it. If you think you can do it but need additional help, then you can watch a tutorial video online, read the manual or call its manufacturer. 

Cartridge Longevity. Ordinary filters are changed every six months, but some top-notch filters are changed once every 3 to 5 years. Cartridges that can last longer are better and probably made with high-quality components making it more efficient and trustworthy in filtering your water supply. You need to remember that even though it was advertised to last a certain period, it doesn’t mean that it will continue until that time. The cartridge’s life span is dependent on water quality. 

The water quality in your house will be different because it will still go through old pipes adding contaminants before reaching your faucets. It will make your water more contaminated than the other, making the cartridge life lesser than it advertised. 

What is an Under Sink Water Filter?

The best under sink water filter is a filtration device that gets water from your house water pipe and put it on the plastic tube to filter the water. It takes out harmful objects and contaminants from the water until it is pure enough. Once it is clean, it can now be used by the user through the faucet. 

This device can only filter one sink where it is attached to and not the whole house’s water supply. Aside from that, you can still use another faucet in your sink while dedicating the filter faucet for drinking and cooking. 

Who Should Buy an Under-Sink Water Filter

Everybody wants clean water in their homes. And an under sink water filter system is one of the easiest ways to have access to clean water. 

It’s for you if you fit into any of these.

  1. You can get tired of accumulating plastic water bottles. It can add to the garbage in our seas. And the plastic container does come with an extra cost. 
  2. You have a small space in your home and a whole house filter system can eat up a chunk of your living space.
  3. You’re looking for something more affordable.
  4. You dislike maintenance work. You also don’t like calling plumbers.
  5. You want clean water that comes only from a single sink.
  6. You want to make your drinking water more potable.

Advantages & Disadvantages of an Under-Sink Water Filter

Why install an under the sink water filter? Let’s take a look at its advantages. We’ll also list down the cons so that you know what you’re getting yourself into.

Pros

  • Easy to install

Almost anyone can install an under the sink water filter. Though it does require minimal plumbing skills, you can still do DIY. The best brands have kits that have clear and straightforward instructions. And even if you are not a seasoned DIYer, you can pull this one off.

  • Affordable

This type of water filter installation is easy on your pocket compared to a whole house water filter. It’s one of the most affordable types.

  • Variety

Under the sink water filters can range from simple and basic units to more advanced and innovative ones. So you can choose the type of filter that best suits your needs. And your budget too.

  • Small footprint

Since these water filters can be mounted under the sink, you don’t need to make way for extra space. Hence, it won’t take up any usable space too. And it’s also pretty hidden from plain sight

  • Low maintenance

All you need is to replace the filter. And that’s about all the maintenance you need to do.  

  • Environment friendly

Having potable drinking water rids the need of buying bottled water.

Cons

  • Limited application

It can only filter water where it is mounted. It’s not like a whale house filter that provides clean water to all your faucets.

  • A new water filter tap

You won’t be able to use your old kitchen taps. It only works with a water filter tap.

Under-Sink Water Filter Installation and Maintenance

You’ll see below a straightforward guide on how to install and maintain your under the sink water filter. 

  1. Remove the old tubing from your sink.
  2. Determine where you want to mount your new under the sink water filter.
  3. Do a DIY on the plumbing connections. The best brands often have an easy to follow guide for basic plumbing needs.
  4. Connect the filter to the sink.
  5. Screw the filter to your desired location.
  6. Test the new filter if it works. Remember that you always need to follow the manufacturer’s guide. While we gave out basic installation steps, you still have to follow what the brand indicates.

Under-Sink Filter Vs Countertop Filter

Under the sink and countertop filters are two of the most economical choices for water filters. What sets them apart? And what makes one better over the other?

Let’s sit them side by side to see the difference.

1. Installation

Countertop filters do not have any plumbing needs compared to under the sink filters. Hence, countertop filters relatively do not require installation.

2. Portability

Countertop filters aren’t installed permanently so you can bring it anywhere with you. 

3. Hidden from plain sight

Under the sink, filters are hidden from plain sight since they are mounted under the sink. Countertop filters, on the other hand, sit on top of your counters. It’s compact but it can still be seen by everyone. 

4. Performance

Under the sink filters can get rid of more contaminants than countertop ones. 

5. Price

Countertop filters are more affordable compared to under the sink filters.

FAQs 

Can it be installed in a new house?

Yes, you may call the manufacturer to help you in taking it off. You may also ask if you need to get new parts to install it in a new house.  

Can the taste change after using the under sink water filter?

There is a little taste difference in the water, but you may not be able to compare it if you did not check the water before installing the under sink water filter. 

Conclusion

People nowadays are conscious of the food and drinks they take to keep them healthy and active while living their life to the fullest. To ensure that you’re using clean and safe water, choose the best under sink water filter for your home and office. The device will not only help its buyers but also helps mother earth by conserving precious resources such as water.



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