Last updated - December 1st, 2021
Our list containing under sink water filter systems brings you a wide range of products across several brands. We will show you systems with different filtration properties and processes to help you find the one that is right for you.
Sink Water Filter Features
Under sink water filters are convenient when you want clean, safe water to drink but don’t have enough space to install a whole house water filter. What you must know, however, is that some of these filters are also large, so before you get one, make sure you have enough room under the sink. Some customers installed the devices in kitchen cabinets or even garage walls.
Another thing you should consider is whether you want a reverse osmosis under sink water filter. The RO technology is the best you can choose if you deal with moderate-to-severe water contamination levels. While whole house filters deal best with mildly contaminated water, RO systems strip the water of almost everything, from heavy metals to viruses and even radioactive elements.
Other tech specs and features you should also consider are:
- Filter life – the bigger, the better;
- Installation – some filters require plumbing and skills, while others feature easy installation;
- Environmental value – while it is true that reverse osmosis system do waste some water, under-sink water filters can remove the need to buy plastic water bottles for months and even years. Do some math and see what type of filter saves the largest number of water bottles and money.
Our criteria include performance, filter life, users’ opinions, and installation procedures.
Under Sink Water Filters – 13 Fully Reviewed
13. Home Master Artesian Reverse Osmosis Under Sink Water Filter
|Materials:||Ceramic and plastic|
|Design:||Tank + Filters + Permeate Pump|
|Life Expectancy:||12 months / 2000 gallons|
|Performance:||Seven-stage RO system | Removes up to 99% of dissolved solids, chemicals and heavy metals|
When it comes to getting pure mineral water on tap, few under sink water filters can match the Home Master Artesian.
It removes 99% of chloramine, chlorine, chemicals, heavy metals, dissolved solids, pharmaceuticals, and other contaminants. Moreover, its wastewater ratio is 1:1, making it the best under sink RO water filter for green living.
When it comes to the safety of your family, you should spare no expense. While the Home Master Artesian RO under sink water filter does come with a price, it also features outstanding specs. The users are more than happy with it. The best for sustainable living, this device is reliable, durable, easy to maintain, and as safe as they come. A must-have for city water.
12. Home Master TMHP-L Hydroperfection RO Under Sink Water Filter
|Design:||Tank + Filters + Permeate Pump|
|Life Expectancy:||12 months / 2000 gallons|
|Performance:||Nine-stage RO system | Removes 99% of well water contaminants|
As we presented you with our under sink water filter reviews, we mentioned that not all filters work with well water. This fluoride water filter does. It can remove 99% of chloramines, chlorine, and chemicals, chromium, fluoride, pharmaceuticals, heavy metals, iron, dissolved solids, microorganisms. It is also an eco-friendly option, as the wastewater ratio is 1:1.
In the package, you will find the fully assembled purification unit with 75 GPD Dow Filmtec Hard Water RO membrane and filters, 3.2-gallon storage tank, 3/8-inch feed-water adapter with shut off valve, refrigerator connection kit, Luxury Standard Brushed Nickel RO faucet with adapter, faucet adapter, 110v power supply, drain saddle, and instructions.
When contaminants in your well water become a problem, you should get one for well water. This Home Master Hydroperfection model will help you clean your water of 99% of impurities and contaminants. Even if the price is a bit steep, you should consider this device. One of the best under sink water filters on the market, this unit is ideal for environmentally concerned users.
11. Doulton SuperCarb Under Sink Water Filter
|Materials:||Ceramic and plastic|
|Design:||Easy to install under most sinks|
|Life Expectancy:||12 months per filtration system|
|Performance:||A four-stage system grabs most chemicals|
This is one of the best systems out there if you’re looking for an efficient system that can clean your water supply in multiple stages. Also, the system uses four filters to remove carbon, chlorine, bacteria, and heavy metals from your drinking water.
Moreover, this process ensures that the device removes the most harmful contaminants from your supply.
This first entry on our under sink water filter reviews is a convenient and functional product that you should consider this year. One issue most users encountered is that the package may not contain all the hardware necessary for installation. However, if this does not upset you, you should put this under the sink water filter on your short list
10. APEC Premium Quality 3-Stage Under Sink Filter
|Materials:||Chrome faucet with food-grade tubing|
|Design:||Easy to install and includes faucet mount|
|Life Expectancy:||Variable, 6 to 12 months|
|Performance:||High-capacity filters for removing chemicals, tastes, and odors|
The Apec WFS-1000 is one of the best under sink water filter systems if you want something that will scrub your water in stages. It includes a three-stage process that is designed to remove most chemicals, get rid of any harsh taste in the water, and eliminate foul odors.
Also, many users appreciate how easy it is to install this unit. Unlike some other products on the market, this under sink water filter seems to provide good water pressure.
Probably one of the best water filtration system units on the market in general, this under sink water filter comes with a 1-year satisfaction guarantee and lifetime support provided by certified WQA water specialists. Users are enthusiasts when it comes to its installation and performance, and the price is quite compelling.
9. Filtrete Advanced Under Sink Water Filtration Unit
|Materials:||Plastic and polypropylene with food-grade tubing|
|Design:||Single-cylinder that is easy to install|
|Life Expectancy:||Four months per filter|
|Performance:||Can filter up to 99% of all contaminants|
|Warranty:||One year limited|
This is one of the best units if you need one that is compact and easy to use. Its ergonomic design comes with no frills and everything you need to install it with minimal setup or tinkering.
Also, many users appreciate that it performs well despite being a very affordable choice for water filtration.
If you want a unit that’s affordable, easy to install, and certified against NSF standards 42 and 53, then this is the best filter you can buy. One of its limitations is that it does not remove lead from your tap water (you need to upgrade).
In other words, if you want to drink safe well water, you should look at the options presented further down this list of under sink water filter reviews.
8. Woder 10K-Gen3 Ultra High Capacity Water Filtration System
|Materials:||Plastic with food-grade tubing|
|Life Expectancy:||Three years|
|Performance:||Cleans up to 99.9 percent of common contaminants|
This is one of the top units you can buy if you want something that lasts a long time and is also affordable. It has a slightly higher price than some of the other products on the market.
However, that price translates into incredibly long-lasting filters. Moreover, many users appreciate how easy it is to install this system and how effectively it cleans water.
Our next in line is the Woder under sink water filter. Featuring excellent tech specs and an affordable price, the Woder filter is the best choice if you are looking for an ideal price to value ratio. However, just as the manufacturer says, if you want the best results, you should use it only with municipal water and not well water.
7. Aquasana 3-Stage Under Sink Water Filtration System
|Materials:||Brushed nickel faucet with plastic tubing|
|Design:||A three-part cup system fits under most sinks|
|Life Expectancy:||Six months per filter|
|Performance:||Can remove over 99% of most contaminants from water|
We think the overall design of this unit makes it one of the best under sink water filter systems you can buy. When you need to replace the filters, you can simply twist off the caps and insert new filters in seconds.
Also, many users seem to appreciate that this device can filter a wide array of possibly harmful chemicals.
When it comes to under counter multi-stage filters, Aquasana has a lot to say as a reputable brand. This product can satisfy all needs of performance. You may encounter some issues with installation and maintenance, as in time, the filter might leak. You may also check out this Aquasana RO filter.
6. CuZn Under Sink Water Filter
|Materials:||Plastic with food-grade tubing and membranes|
|Design:||Single-cylinder fits under most sinks|
|Life Expectancy:||5 years per filter|
|Performance:||Can filter out 99 percent of contaminants|
We think this is one of the best under sink water filter units thanks to its easy installation process. Also, you can start enjoying cleaner water in just a few minutes with a wrench and the included parts.
If you need a product that can last several years between filter changes, you don’t have to look any further than this CuZn UC-200.
It is hard to choose a better product than this one. The price is compelling and the tech specs are incredible. Long-lasting, efficient, and reliable, this has to be one of the best under sink water filters to date. The only downside is that the request often tops the offer, so you have to search for it.
5. APEC Top Tier 5-Stage Ultra Safe Reverse Osmosis Water Filter
|Materials:||Plastic and polypropylene|
|Design:||Five-stage cylinder system with tank|
|Life Expectancy:||Up to 12 months|
|Performance:||Removes up to 99 percent of all contaminants|
Another APEC product gets our top spot of the best under sink water filter you can buy right now. If you’re looking for the ultimate clean water experience, this filtration system can deliver it to you. Many users appreciate how easy it is to install and start using right away.
Also, the system uses a series of five filters and membranes to scrub your water free of almost all harmful contaminants. Moreover, check here for more reverse osmosis water filters.
Like the NSA water filter in the ’90s, a true best-seller with impeccable score, the APEC 5-stage under sink water filter is everything you wanted and then some. Capable of removing 99% of contaminants including arsenic, chlorine, lead, fluoride, heavy metals, bacteria, virus, and 1000+ other contaminants, it is in a league of its own.
4. Waterdrop 10UA Undersink Water Filtration System
|Life Expectancy:||12 months / 8,000 gallons|
|Performance:||Removes various sediments and prevents scale|
10UA system provides the best filtration in its price range. For around $60, you get a unit that lasts up to 8,000 gallons and almost completely removes chlorine. Besides, it’s NSF-certified, which additionally grants for its quality and safety.
The system is built from lead-free, WQA-certified materials, and comes with advanced filtration media. It provides 2.0 GPM at 60 PSI and is ideal for any kitchen, bathroom, or even RVs. Besides, the system is amazingly simple to install and comes with push-to-connect fittings.
3. Waterdrop 15UA Undersink Water Filtration System
|Materials:||BPA-free and Lead-free materials|
|Life Expectancy:||2 years|
|Performance:||Removes chlorine, lead, and various contaminants.|
The most obvious difference between 10UA and 15UA is their longevity. Unlike 10UA, this unit can last for up to 24 months. It also comes with advanced, 5-stage filtration, which perfectly removes various contaminants. Besides, the system also filters large particles and prevents scale.
Like 10UA, it provides a flow rate of 2.0 GPM at 60 PSI which is enough for most kitchens and bathrooms. The water it provides is perfectly clean and can be used for cooking, drinking, skin cleaning, and similar. Also, the installation process takes less than 5 minutes, while replacing the filter takes only a couple of seconds.
2. Frizzlife Undersink Water Filtration System
|Life Expectancy:||24 months / 16,000 gallons.|
|Performance:||Removes various contaminants and improves water taste and smell.|
Although most people look for 4-5 filtration stages, in some cases, 2-stage filtration can be enough. This system removes particles down to 0.5 microns and improves water taste. Besides, unlike most RO systems, it keeps essential minerals in the water.
Another nice thing is a built-in shutoff valve. It provides a simple filter replacement, without turning off the water supply line. Also, the system provides a 2.0 GPM at 40 PSI and is good for drinking and washing dishes. If you have problems with watermarks, you can easily solve them with this Frizzlife unit.
1. 3M Aqua-Pure Undersink Filtration System
|Life Expectancy:||Not specified|
|Performance:||Removes protozoan cysts, lead, chlorine, and VOCs.|
At first, we should mention that the 3M Aqua-Pure provides a fantastic flow rate at lower pressure. With 25 gallons per minute, it’s among the best choices for the price. Also, it features a Sanitary Quick Change design, which allows easy filter replacement. Replacing the cartridge requires no tools, and also, you won’t have any contact with the filter media.
The system also comes with a useful shutoff valve. Besides, it’s NSF certified, which grants for its quality and safety. With its carbon-block, 3-stage filtration, it provides cleaner and better-tasting water than most filters on the market.
Frequently Asked Questions
What Are Under Sink Water Filters?
Under-sink water filters are point-of-use (POU) devices. You install them where you need pure water. Most of them clean the water that comes at your faucet. Some of the best water filtration system units also clean the water that comes through your refrigerator.
Which Under Sink Water Filters Remove the Most Contaminants?
Without a doubt, reverse osmosis under sink water filters are the most effective devices. While it all depends on their number of filtration stages, modern RO filters are capable of removing 99% of all chemicals, pollutants, heavy metals, microorganisms, hormones, etc.
How Do You Change Under Sink Water Filters?
When the time comes for you to replace the filters in an under sink water filtration system, read the instructions manual. Most filters are easy to replace without a plumber’s help. Just make sure you get the replacement parts that fit your unit’s make and model.
Our list of the best under sink water filter models is sure to have something for everyone. Whether you want a unit that can deal with mild contamination or something that can get your drinking water as pure as possible, there is something for you on our list.
Most units last several months before needing any filter replacements. Please share your thoughts on the best under sink water filter with us in our comments section.