Best Faucet Water Filter – Buying Guide and Reviews

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Last Updated: January 3, 2021
By: Charles Cole

Big complicated systems are not for everyone when it comes to filtering water. The smaller and equally efficient water filters that can be installed with the best kitchen faucet in minutes have been around for years and are just as effective as water softeners and other forms of filtration.

The systems that were traditionally cheap plastic pieces have evolved into complex systems that have multiple stages of filtration. Water is as clean and crisp as if it had gone through a water softening system, and all without the addition of salt. Faucet water filters tend to be low-priced since the cartridges need to be replaced every 100 gallons or so — an additional expense for the consumer to incur.

These cartridges are best bought in packs rather than as singles, as you never know when you might need an extra one and can’t go to the store. Buying in bulk is also better value and some packs have as many as 10 cartridges to last you a couple of years. Since there is no universal way to decide what one is best for your home, here is a good list of some of the more popular and commercial faucet water filters in the industry.

Kitchen Faucet Water Filters Reviews

Brita On Tap Faucet Water Filter System

Brita 35618 Basic Faucet Water Filter System

Brita On Tap

  • 100 gallons of filtered tap water
  • Fits standard faucets only
  • 1-click filter replacement
  • Reduces Lead, BPA Free

The low-priced Brita On Tap Faucet Water Filter System comes in either chrome or white; the latter capturing the classic Brita look. The package includes 1 water filter system and 1 filter capable of filtering up to 100 gallons of water. Replacement filters are inexpensive, readily available for purchase from a variety of sources, and can even be bought in packs of 2 and 3.

They filter is capable of reducing water odor, chlorine tast, cryptosporidium, and giardia cysts and other harmful contaminants. Besides the usual contaminants, the multistage filter traps sediment with its extra layer of protection. This is a BPA-free product for the environment-conscious, and even features a remaining filter life indicator so you know when to discard the filter. Installing is as simple as unscrewing the faucet aerator and screwing in the base of the water filter system until it clicks. Based on whether the faucet threads are on the outside or inside, you may have to use the included washers for compatibility reasons.

The Brita On Tap Faucet Water Filter System is one of the best faucet water filters, but is not compatible with kitchen faucet systems that have a spray head attached to the spout. When installing for the first time, the system needs to be flushed for 5 minutes by running the water, but this won’t count against your 100-gallon-per-filter limit. For buyers that have unusually high threads on their faucet that the included washers can’t cover completely, covering the remaining length with plumbers tape will do the trick and is recommended by a lot of buyers. This is about as painless as it gets when you want to install a product in your home for fresh water. The Brita On Tap Faucet Water Filter System comes highly recommended, especially for the price.

DuPont WFFM350XCH Electric filter

DuPont WFFM350XCH Electric Metered 200-Gallon Deluxe Faucet Mount Premium Water Filtration Filter


  • 200-Gallon Deluxe Faucet Mount
  • Easy-to-read electronic display
  • 1 Lithium Metal batteries required
  • Four-Year Limited Warranty

Also reasonably priced is this DuPont model that has an extremely attractive modern interface with an electronic display. The display shows how many gallons of water have been cleaned and also indicates the remaining filter life. With just a single filter, consumers will have some of the best tasting water of their lives, even if they live in a hard-water area.

This faucet water filter reduces chlorine, sediments, cycts, lindane, benzene, asbestos, mercury, and even lead. Besides removing those harmful contaminants, it also makes the drinking water a lot more palatable, improving the taste, clarity, and even odor. Filter life is extended thanks to DuPont’s proprietary micro ban antimicrobial protection that is built into each and every one of their filters and water filter systems. When compared to the Brita filters, the DuPont has double the life at 200 gallons per filter — an astonishing achievement. And considering that both filters are the same price, the DuPont clearly wins on both quality and longevity.

Plumbers tape is included in the package in case you run into a compatibility issue that the two included washers or adapters can’t resolve. The installed battery has a lifetime guarantee and there is a 4-year limited warranty on the life of the product. This WQA-certified product is definitely one of the best on the list, if not the best. One of the best features hasn’t even been mentioned yet, and that is the water flow selector that is conveniently located on the arm of the product. Switch between filtered and unfiltered water with the twist of a knob. Consumers should definitely consider purchasing this water filter, as it is one of the best on the market today.

Culligan FM-25 Faucet Mount Filter

Culligan FM-25 Faucet Mount Filter

Culligan FM-25

  • 0.5 gpm flow rate at 60 psi
  • Filtration Method: Carbon Block
  • Pressure Range: 30-100 psi
  • Temperature Range: 40-100 degrees fahrenheit

Second to last on the list is the Culligan FM-25 Faucet Mount Filter; not a brand as well known as the DuPont or Brita but still holds its own in the industry. This low-cost filtration system reduces odor, bad taste, lead, and other known contaminants found in tap water. It achieves the most beautiful chrome finish out of all of the products, which is a big plus if you have a kitchen faucet that is visually appealing.

The polished chrome finish will only enhance the look, rather than looking like an unsightly bolted-on attachment like a lot of the other filters in the market. No tools are needed for the installation thanks to the simplistic design, which goes one step further with the diverter tab that makes switching between filterend and non-filtered water a breeze. Installation is hassle free, even for users that have never used a water filter system before.

Buyers will get a 2-year limited warranty on the product with clear and concise installation instructions in the manual. Installation of this system is probably the easiest on the list, even though it may run into the same compatibility issues as the rest. Unlike the previous two items on the list, this one doesn’t have an indicator to let you know when to change the filter. It is best to have a spare cartridge available for when the water flow slows down considerably while filtering, which is a clear sign that it is time to change the filter. Surprisingly this is a really good buy, even if it isn’t from one of the bigger brands on the list.

Instapure F2BCT3P-1ES Water Filter

Instapure F2 ESSENTIALS Tap Water Filtration System

Instapure F2BCT3P-1ES

  • Chrome Base with clear cap
  • No tools necessary for installation
  • Reduces bad taste and odor from chlorine
  • Up to three months or 200 gallons

The Instapure water filter is one of the more affordable options on our list. However, it’s only this affordable if you choose to purchase it without being setup—if you purchase it already pre-assembled, however, it will end up being pricier. Since this brand has been around since 1975, it’s been able to establish a distinguished and well-known reputation thanks to its high-quality and durable products. With this filter you will not only save space in your home, but you will also save a good bit of money (since you won’t have to continue purchasing bottled water) while also doing your part to help save the environment.

This water filter was made to fit most standard faucets and taps that come with a removable aerator—so rest assured that will fit most brands, like Delta, Kohler, and Grohe to name a few. However, we do recommend that buyers look at the sizing and compatibility before making their purchase, just in case this water filter isn’t the right fit.

The best part about this filter is how easy it is to use! You simply use the lever to choose between the filtered and unfiltered water—so you don’t have to waste your filtered water on anything other than for your drinking purposes. Lucky for you this one is not only effective, but it is also designed to look great with most kitchen designs. The filter is also incredibly easy to install—and it requires no tools to put it together (honestly, you don’t have to purchase the expert setup if you’re able to semi-savvy at putting things together on your own).

The Instapure can filter water thanks to the use of high coconut carbon, which is capable of absorbing and filtering out compounds and pollutants. It also reduces the presence of Lead, cysts, and VOC’s by 99 % and reduces the taste and smell of chlorine by 97% thanks to its ANSI and NSF certification. This allows the filter to provide you with clean water that also tastes great!

Like many other water filters, the Instapure filter is designed to last for about 3 months or so before being replaced and until then it’ll provide you with great tasting, filtered water. Moreover, while sometimes the filter can last longer than 3 months (it just depends on the quality of your water) it is still highly recommended that you go ahead and change your filter at every 3-month mark.

Overall, you’ll find this water filter compares to some of the best water filter brands you must choose from out there, even though it comes at a much a lower cost. Not only is it easy to use and requires no tools to install, but it’s capable of effectively filtering your water and removing that pesky chlorine odorfor up to 3 months. The filter replacements for this water filter are also affordable and simple to replace—so you don’t have worry about any trouble when the time comes to replace your filter.

Faucet Mount Water Filter Buying Guide

With all of the options out there, it can be incredibly difficult for buyers to narrow down the best faucet mount water filter for their home. And, while everyone has different needs, and different constraints, for the most part most of us take the same features into consideration. So, we have put together a buying guide that goes over what you should consider before making your purchase, take a look below to learn more!

Things to keep in mind when choosing a water filter

The following topics discuss features that all buyers should consider—no matter your budget or personal preferences. Most of these are things we all look for, but some buyers may overlook some of these, so make sure to take a look at all of our suggestions.


Some buyers may be surprised to find that many water filters come in all shapes and sizes. Some are bulkier and heavier than others, while others are minimalistic and barely noticeable. It’s also important to note that bigger does not mean it’s better—many of the smaller water filters are equally as effective as larger options. The size will boil down to your preferences and needs—and sometimes it may also depend on your budget. Overall, figure out what size you prefer for your space and take this into consideration as you narrow down your options—trust us, there’s options for everyone!


When it comes to finish options, buyers will find that there are far less options to choose from when compared to the plethora of color and finish options you have with kitchen faucets. While you’ll find that some of the sleeker and more popular options are the chrome water filters, many of you will find that you like some of the other more popular colors like black and white. Even the options are more limited, you still have plenty that will fit your space!


Water filters are designed to first filter your water effectively and simplify your life—but that doesn’t mean they can’t look great too! Although we don’t recommend putting style as your first priority, we also understand that many buyers don’t just want an effective filter, but they also want something that won’t clash with their faucet or look out of place in their kitchen.

When we looked at style, we looked at the overall weight and size of the water filter along with the finish and color options they are available in. Many buyers will be happy to hear that their options for all styles—so regardless of what features you are looking for, there is definitely a perfect filter for your home out there.

So, whether you want a filter that connects directly to the tap or a filter with a separate side installation, just know that you have plenty of options for each!


For the most part, the best faucet water mount filters are really not that pricey—although some are more expensive than others. Buyers will find the options featured here all run between just under $20 to about $60. Oftentimes cost may depend on where you purchase or order your filter from so make sure to shop around before making your purchase. We also recommend you make a list of the most important features you look for in a filter so you can be sure to buy something that fits your needs—and not something that offers too much or too little.


Most faucet mount water filters are really simple to install and start using, although some are even easier to install when compared to others. The water filters on our list are all really easy to install and most don’t require any tools for assembly.

Some water filters simply require that you hand tighten them directly to the faucet, and you may need to tighten them here and there if you ever notice a leak. Others may require tools to tighten them—but for the most part they are that simple to install.

The best faucet mount water filters are also designed to fit most standard faucets and sink nozzles—and many come with additional adaptors to ensure they will fit yours. While installing these filters is a pretty simple one or two-step process, we still encourage to take a look at the measurements and compatibility options before purchasing your next faucet mount water filter.

Filter cartridges

Just like our faucets may need maintenance or part replacements, any faucet mount water filter will require regular filter replacement. The typical life a filter cartridge is between 2 to 3 months, although there are some that can last up to 4 to 6 mounts. However, you will find that most manufacturers recommend users replace them every 6 months.

Filter cartridges need to be replaced regularly if you want them to continue functioning effectively and properly filter your water. As time passes the filter’s capabilities are diminished, and this speed depends on the quality of the water it is regularly filtering—which is why 3-month is the base time frame most brand’s give their buyers.

Another useful features some faucet mount water filters offer is a filter change reminder that will let you know exactly when it needs to be replaced. This will allow you to use the filter to its maximum capacity and prevent you from changing it prematurely.

Lastly, when looking at the filter cartridges take a look at the replacement process because some our much simpler than others. Some brands require a simple one-click installations, while others may require a little more “elbow grease” than that. It is, however, important to note that most of these filter cartridges are simple to replace—some are just easier to change than others.

Filter water change sensors

As mentioned above, a lot of these faucet mount water filters come with water change sensors, so you know exactly when you need to change your filter cartridge. This helps you ensure you replace your filter at the right time—so you don’t wait too long or do it too soon.

While not all filters offer replacement sensors, those that do are easy to ready and will simplify your life by making your filter change one less thing you need to remember. Most will have an LED light that will remain green as long as the filter is still good to use and will change to red when it is time to change (some will change to yellow when they are getting close, so you have time to purchase your replacement filter in time). These status indicators are always place in an easy to see place and are not susceptible to water damage.


Although there aren’t as many faucet mount water filter brands as there are faucet brands to choose from, there are still enough to make your final choice difficult to make. Some of the better-known brands are Brita and Pur although DuPont and Culligan stand in the same caliber when it comes to effectivity—even though they are a little lesser known.

Brita and Pur are brands that you will find in most stores. They come highly rated and recommended in the water filtration community and it is highly unlikely that you have never heard of these brands. They are typically more affordable, although they their prices depend on the product—with their more effective and better options being more expensive.

Culligan and DuPont, on the other hand, are a little less-known—although they offer equally effective options. You will find that these brands have more paired finish and color options.

How many contaminants can a filter remove/block?

The purpose of these faucet mount water filters is to purify your water and filter out contaminants, so you don’t drink them. There minimum requirement is to filter certain contaminants but there are better filters that filter more contaminants, improve the taste of your water, and eliminate or reduce the smell of chlorine from your water supply.

The best faucet mount water filters will filter out and reduce the presence of chlorine, asbestos, mercury, lead, sediment, lindane, and benzene. Many of them are also BPA free and designed to provide better tasting water.

There are other water filters that take it up an extra notch and filter out up to 61 different contaminants found in our water supply to ensure you have the cleanest water to drink. While these are great, buyers may want to consider testing their water quality to see which filter works best for them. While this isn’t a requirement, however, some may need more stringent filters if their water supply is on the poorer sided.

How does a water filter work?

Before getting into this, it is important to clarify that these water filters are not the same as water purifiers. Water filters are designed to remove common contaminants found in our water—they will not remove potentially dangerous microbes or purify water you will find out in the rain forest (to be extreme). Instead these filters will improve the taste of your water while also improving the quality by removing contaminants your body does not need to ingest.

Faucet mount water filters remove contaminants by having the water first pass through a screen that will trap particles like dirt and sediment. The filter then uses various ways to filter the water. Most water filters use a block of carbon or activate carbon in combination with zeolite while others, like the Instapure, may use High quality Coconut Carbon. So, in essence, they use a type of carbon combined with Zeolite to remove contaminants and chemicals from the water as it flows through the filter.

Installing a tap water filter

Faucet mount water filters are all fairly simple to install—although we do recommend you take a look at the filter’s manual to ensure you are installing it correctly. Although most are compatible with almost all standard faucets, you just never know—so it is better to sure, so you don’t waste time purchasing a water filter that isn’t compatible with your faucet.

Generally, you will need to first turn off the water source under the sink and remove the faucet’s aerator. Make sure to clean the area and attach the water filter to the faucet. Once you have tightened it go and turn the water source back on. Test it out to see if it works and make sure it is secure—with no leakage.

Once this is done you should be good to go—and you won’t need to mess with it again until you have to replace the filter cartridge, which is also a relatively simple process.

Cleaning and replacing your water filter

Cleaning the outside of your water filter is fairly simple—if you have a chrome filter you may want to spray some wipe it off with window cleaner in order to remove any prints or smudges on it.

When it comes to replacing your filter, the process is also fairly simple. Some models are simple one-click replacements where you slip the old one off and attach the new one. Others may require you remove the attachment so you can replace the old filter with the new one.

Overall, most filters are easy and fast to replace—it really should not take you more than 5 minutes, especially if you have on our recommended options.

Faucet Mount Water Filter Comparison Chart

FaucetsMaterialNumber Of Pieces FinishRatingPrice
BritaPlastic 1Chrome7$
DuPont WFFM350XCHPlastic 1Chrome7$
Culligan FM-25N/A1Chrome Finish 7$
PURStainless Steel 1Black/Chrome 7$
KabterFood- grade ABS plastic1Chrome 7$
Instapure F2N/A1Chrome7$

Parting Words

At the end of the day, choosing the best faucet mount water filter for your home is not as difficult as choosing your next kitchen faucet. However, there a

re several brands and types out there to choose from along with some that come in different color and finish options. This give you a wider selection to choose from, which why it’s important to prioritize your needs and design preferences when making your decisions.

It is also recommended that buyers take into consideration the quality of the water they will be filtering—if you have poorer water quality it’s recommended you choose a water filter with water change sensors, so you know exactly when you need to change it. That being said, most brands recommend you replace your filter cartridge every three months, so if you don’t have a water sensor keep this mind so you know when it needs to be replaced.

Charles Cole

Welcome to my blog, its a resource for those looking for a new kitchen faucet, feel free to brows my site.

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