The quality of tap water has been declining over the years.

In fact, according to the EPA, nearly half of the U.S. population gets its drinking water from municipal sources that contain contaminants such as arsenic, fluoride, nitrates, and bacteria.

You don’t want to drink contaminated water, especially since it can cause serious health issues.

Fortunately, there are several options for filtering tap water at home. A simple filter is one option.

It will remove most impurities. If you have a well or other source of water nearby, you may consider filtering that as well.

The best way to get rid of bad tastes in your water is by installing an excellent water filtration system. This will ensure that your water stays fresh and free of any unwanted chemicals.

There are many different types of water filters available on the market today.

Some are more effective than others, so we’ve done some research and found the top water filters for sinks.

NU Aqua Platinum Series 7 Stage UV And Alkaline Filter

The NU Aqua Platinum Series water filter uses seven stages of filtration to purify tap water.

The first stage removes chlorine and chloramine, which are common disinfectants used in public pools, hot tubs, spas, and saunas.

The second stage removes heavy metals like lead and mercury.

The third stage removes organic compounds including pesticides, herbicides, pharmaceutical drugs, and detergents.

The fourth stage removes radon gas, manganese, iron, copper, zinc, and nickel.

The fifth stage removes carbon monoxide, volatile organic compounds, and ammonia.

The sixth stage removes residual chlorine and chloramines. Finally, the seventh stage reduces odor and improves taste.

This filter includes a pre-installed pump that doesn’t affect your water pressure.

In fact, if you originally have very low water pressure then this pump is set to improve that.

The design of this filter is 100% lead-free. It will fit comfortably under your sink.

In addition to removing harmful chemicals, this reverse osmosis unit also includes a backwash function. It automatically cleans itself when needed.


  • Seven-stage filtration process for incredible purity
  • Removes chlorine, chloramine, and other contaminants like heavy metals
  • The compact design will fit under your sink
  • Lead-free design
  • The pre-installed pump can improve water pressure


  • Expensive

Waterdrop Under Sink Filter

Waterdrop are known for their premium quality filters at eye-watering prices.

But you get what you pay for. Their RO systems come with impressive features and boast durability and longevity.

Made from brushed nickel, this reverse osmosis filter uses an ultrafiltration membrane to give an incredibly pure outcome.

However, the WaterDrop RO System does offer great value for money.

Not only does it include everything you need to start using filtered water right away, but it also comes with a lifetime warranty.

You won’t find better terms anywhere else.

It includes a powerful 1.8-gallon capacity tank. That means you can use it for days without needing to refill it. It also comes with a built-in pump.

So no need to buy another one separately. The pump can also help to improve poor water pressure.

The filter cartridge is made from durable polypropylene. As a result, it lasts longer than plastic ones. Plus, it’s easy to clean. Simply rinse it off after each use.

What’s more, this filter only takes around half an hour to install and once done, should stay working for a very long time.


  • Easy installation
  • Lifetime warranty
  • Durable construction
  • Includes a capacity tank so you don’t have to keep refilling
  • A built-in pump helps to improve water pressure


  • Not suitable for hard water areas
  • Expensive

Woder WD-10K-ADV-DC Ultra High Capacity Under Sink Water Filter with Direct Connect Fittings

If you’re looking for a high capacity under sink filter, look no further than Woder.

This model offers 10,000 gallons per year, which is enough for most households. It has a dual flow rate option meaning you can choose between slow or fast flow rates.

This filter has been designed to be used in conjunction with a separate pump. However, it can work on its own too.

The filter cartridge is made from a gold seal which makes it extremely durable. It can withstand temperatures up to 185 degrees Fahrenheit.

This filter is excellent at removing that nasty sulfur smell, decontaminating water, and removing any dirt or sediment that may have snuck its way into your water.

You’ll notice that there isn’t much space inside of the housing. However, this is because the filter is designed to sit directly beneath your kitchen sink.

This filter comes with a ‘direct connect’ hose that you can hook up without needing a plumber for installation.


  • Highly efficient
  • Gold seal certified cartridges
  • Can be used as a standalone system
  • Dual flow rate options mean you can choose how quickly the water flows through


  • Not ideal for hard water areas
  • Expensive

Epic Smart Shield Under Sink Filter

This solid carbon block water filter is excellent at utilizing absorption filtering to remove contaminants. As well as removing bacteria, this filter can remove cysts.

What’s more, the filter itself isn’t susceptible to bacterial growth or mold, so your water will stay clean filter after filter.

Moreover, the Epic Smart Shield filter is incredibly versatile. While you can use it as an under-sink filter, it also has the capacity to be used as a fridge water filter.

If you want something that will last you for years, then this might be the best choice for you. This filter features a stainless steel body and a ceramic core.

These materials make sure that the filter stays strong even when exposed to extreme conditions. In fact, it can handle temperatures up to 450 degrees Fahrenheit.

This filter comes with a built-in sensor that monitors the quality of your water. They will alert you if anything goes wrong.

If you want to get started with filtering your tap water, but aren’t sure where to begin, then this is a perfect choice.

It comes with everything you need to get started including a pre-installed pump.

All you need to do is add some filters and replace them every 12 months. That’s an incredibly long lifespan for a filter.

This Epic Smart Shield filter is perfect if you want something that will last for years and years.

It features a 5-stage filtration process that removes chlorine, fluoride, lead, mercury, and arsenic. It also reduces bacteria levels by 99%.

This filter is designed to fit right underneath your sink. It uses a direct connection hose that connects straight to your tap.

Do you want to get rid of all those nasties in your tap water but don’t know where to begin?

Well, then this might just be what you’ve been looking for! The Epic SmartShield Under Sink Filter will do exactly that.

The Epic SmartShield Under Sink filter is one of the most popular under sink filters. It has received praise all over.

It’s made from high-quality components and is backed by a warranty.

What are you waiting for? Get yours today!


  • A durable body that’s designed to last
  • Built-In Sensor to check your water quality
  • Easy installation; you can install it yourself
  • Incredible filtration will leave your water very pure
  • Long warranty


  • Pricey

ICEPURE Under Sink Water Filtration System

If you’re looking for a great way to keep your water clean and healthy, then this might be what you’ve been searching for.

This system will help you to reduce the number of harmful chemicals in your drinking water. It does so using three stages of filtration.

First, it uses a carbon block to absorb heavy metals like lead, mercury, and cadmium.

Then, it uses a micro-filtering system to remove chlorine and other impurities. Finally, it uses a reverse osmosis membrane to remove any remaining impurities.

You’ll never have to worry about your drinking water again.

If you want to start using a water purification system, then this might be a good option for you. You won’t regret getting this.

It’s easy to use and install. Just plug it into your faucet and let it run. After 30 minutes, your water should be crystal clear.

You can buy this product online or go to your local store and pick it up. Either way, you’ll love how well this works.


  • Durable design that’s built to last
  • Removes many different types of contaminants
  • Easy to install


  • Not recommended for homes with hard water
  • Voltage fluctuations may affect performance

Buyer’s Guide

Now you’ve had a chance to look at some of the great under sink water filters on the market, you’re sure to have some thoughts.

Luckily we’ve created this handy buyer’s guide to explain anything you might be confused about.

Different Types Of Under Sink Filter Systems

Not all under-sink filter systems are the same. There are two main categories of under sink filters. They are gravity-fed and cartridge-based.

Then from those two categories, there are further 3 different types of actual water filters, based on how the filtration works.

Those are reverse osmosis, ultrafiltration, and carbon filters.

Gravity Fed Vs. Cartridge-Based Systems

Gravity-fed systems rely on gravity to pull the water through the filter. Cartridge-based systems use a pump to move the water through the filter media.

Gravity-fed systems tend to be cheaper because they require no electricity.

However, they also tend to clog easily. With cartridge-based systems, you need to change out the filter every few months.

There are also hybrid models that combine both features. These are usually more expensive because they make use of both technologies.

Reverse Osmosis Under Sink Filters

A reverse osmosis filter works by deconstructing water at a molecular level.

Then the water is pumped through a membrane with small pores to trap toxins and minerals. The purified water comes back out as fresh H2O.

The biggest drawback to these systems is that they do not work well with hard water.

Hard water contains high levels of calcium and magnesium which build up on the membrane. That causes them to fail quickly.

Ultrafiltration Under Sink Filters

An ultrafiltration system is similar to a reverse osmosis system except that instead of trapping particles at a molecular level, it traps them at a cellular level.

The difference between an ultrafiltration system and a reverse osmosis one is that in an ultrafilter, the membranes are much thinner than what you’d find in a reverse osmosis unit.

This allows the water to pass through, but all the contaminants trying to hitch a ride are kicked to the curb.

Carbon Filters

These are probably the most common type of water filters used today. Carbon filters remove impurities like chlorine and other chemicals from tap water.

The problem with carbon filters is that they don’t actually filter out any particulate matter.

Instead, they simply absorb it. So if you want to get rid of bacteria and germs, you need to add another step after using a carbon filter.

How To Choose An Under Sink Filter

Once you’ve decided which type of under sink filter you’d prefer, there are still a lot of factors you’ll need to consider when choosing one.

Some of these include:

  • Size – The larger the filter, the better. This is because it has more surface area to catch particles.
  • Filtering Capacity – How many contaminants can a filter remove from water?
  • Flow Rate – How fast does the water flow through the filter?
  • Filter Replacement Frequency – How often do you need to replace the filter?
  • Water Quality – What kind of contaminants do you expect to find in your tap water?
  • Cost – How much money are you willing to spend on an under-sink filter?
  • Installation – Is the filter easy to install? Does it require special tools?
  • Warranty – Do you get a warranty on the filter? Will the manufacturer cover repairs if something goes wrong?

Once you’ve taken those factors into consideration, aim to find a water filter that ticks those boxes.

Frequently Asked Questions

Here are some of the most frequently asked questions about under sink filters, asked and answered.

What Are The Benefits Of An Under Sink Water Filter?

There’s no question that having clean drinking water is important.

But did you know that even though you’re doing all the right things for yourself, your home could be harboring harmful bacteria and viruses?

Under-sink filters help keep your home safe from disease-causing microorganisms.

They’re especially useful for people who have kids or pets. And if you live in an apartment building, they’re great for keeping the water flowing smoothly.

But before you rush out and buy one, here are some things you should know.

Why Should I Get One?

A sink water filter is one of two ways to ensure your faucet water supply is clean and healthy to drink. The other method is to use a standalone filter that you fill and leave to work its magic.

The latter method is fine, but it’s not as efficient, and you’ll constantly have to refill the filter every time you have a glass of water.

A sink water filter purifies your water right at the source, so you can pour yourself crisp, clean, refreshing glasses of water straight from the faucet.

An unfortunate truth of modern life is that, although it appears crystal clear, our mains water is by no means clean, but a sink water filter can change all that, ensuring you and your cohabitants only drink pure H2O.

Is There A Downside To Having An Under Sink Filter?

Of course, there’s always a downside to anything. And this is certainly true for under sink filters.

One big issue is that they take up space. You’ll need to make sure you have room for one.

Another is that they cost money. Depending on how large they are, they can run anywhere from $20 to $100. So they aren’t cheap.

How Much Does An Under Sink Water Filter Cost?

There are two main factors when buying an under sink water filter. First, you need to consider whether you want a low price or a higher quality model.

Second, you need to decide between purchasing a pre-installed unit or having one installed by a professional.

When shopping for an under sink water filter, you’ll find that there are models ranging from $20 to $300. Some can even cost in the $1000 range. However, the average cost is around $100.

Why Should I Buy One Installed Vs. Pre-Installed?

One of the biggest advantages of installing a pre-installed water filter is that it saves time, although, of course, when you purchase a pre-installed unit, you still need to wait for it to arrive before installing it.

On the other hand, when you choose to install a water filter yourself, you’ll save money because you won’t pay for shipping costs.

Also, you’ll get to enjoy the convenience of not needing to wait for delivery.

Another advantage of installing a water filter yourself is that you can ensure that you get exactly what you want.

With a pre-installed unit, you may not be able to change the type of filter used or even swap out parts.

However, you do need to take care when choosing which brand to use.

You should only buy a product that’s been tested and approved by the manufacturer. If you’re unsure how to go about doing this, then you should contact them directly.

What Kinds Of Contaminants Can Be Removed By A Water Filter?

The first thing you need to know before buying any under sink filter is what kinds of contaminants you expect to find in the water coming from your taps.

Hardness – Hard water contains minerals like calcium and magnesium. It also tends to contain iron and manganese.

All of these elements cause problems for people who don’t have access to high-quality water.

Taste & Odor – Many people dislike the taste of their tap water. In fact, some people even report having health issues due to bad-tasting water.

Fortunately, most under sink filters will remove these odors and tastes.

Mold Growth – Mold growth is another problem caused by poor water quality.

If you notice mold growing in your home, then you should invest in a good under-sink filter.

Is There Anything Else To Know Before Buying An Under Sink Water Filter?

You should also think about how often you plan on using your water filter.

You’ll need to figure out if you’re going to use it every day or just once a week. This will help determine whether you need a cheap or a more expensive model.

In addition, you’ll need to consider how long you plan on keeping the filter. Most units come with a limited warranty.

However, this only covers defects in materials and workmanship.

If you damage the filter by leaving it plugged in or by putting too many things in the drain, then you won’t be covered.

If you’re looking for a replacement for your current under sink filter, then you should revisit our list of top 5 best water filters for sinks, above.

We’ve reviewed each one so you can decide which one is best suited for your needs.

Final Thoughts

There’s no doubt that the quality of our water is deteriorating.

Whether it’s because of climate change, or personal environmental factors, it’s an issue.

Water is incredibly important to humans, and the quality of our water impacts our quality of life.

By using an under sink filter you give yourself and your family a head start on your health. They’ll feel better, look better, and could even live longer.

Choosing the perfect under-sink water filter isn’t easy. The market has become flooded with different brands and models.

Luckily we’ve already scoured through the thousands out there to provide you with five of the top under sink filters.

Any of these would provide your family with healthier, clearer, and much tastier water.

Be sure to choose the right one for you and your family, and you can always refer back to our buyer’s guide and frequently asked questions for more information.

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