Under Sink Water Filters

Under sink water filters are the preferred choice of many people due to the fact that they are a discrete addition, not occupying any counter space while they do their work excellently. If you are interested in purchasing the product, make sure that you check out our comparison table below to find out what are your best options.

Top 5 Under Sink Water Filters Comparison

  1. Aquasana AQ-5300.62 2. Pelican Water PDF-1500-PC 3. Crystal Quest Undersink Triple Fluoride System 4. APEC Essence ROES-50 5. iSpring RCC7
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Product Specifications

Manufacturer Aquasana Pelican Water Crystal Quest APEC Water Systems iSpring
Dimensions (H x W x D) 9″ x 4.2″ x 12″ 15″ x 12.5″ x 4.5″ 14″ x 5″ x 15″ 17.5″ x 16″ x 5.25″ 17.5″ x 14.5″ x 5.2″
Weight 6 Lbs 6.25 Lbs 14 Lbs 26 Lbs 25 Lbs
Fitting Size 0.25″ 0.375″ 0.25″ 0.25″ 0.25″
Faucet Options 3 3 1 1 1


Number of Contaminants Removed 70 N/A N/A Over 1000 Over 1000
Filtration Stages 3 3 3 5 5
Filter Types Sediment Pre-Filter, Activated Carbon, Catalytic Carbon 25 Micron Pre-Filter, Two Catalytic GAC Carbon Filters Sediment Filter, Two Filter Pads, Coconut Shell Granulated Activated Carbon, Ion Exchange Resin, Two High-Purity Alloy Blend Medias, Solid Carbon Cartridge Two Carbon Block Filters, Reverse Osmosis Membrane, Coconut Carbon Filter, Sediment Pre-Filter Sediment Pre-Filter, GAC filter, CTO Filter, Reverse Osmosis Membrane, Post Carbon Filter
System Capacity 600 Gallons 1500 Gallons 10000 Gallons 1000 Gallons N/A
Maximum Feed Water Pressure 80 PSI 80 PSI 60 PSI 85 PSI 85 PSI
Flow Rate 0.5 GPM 1 GPM 0.5 GPM 1 GPM 75 GPD
Maximum Feed Water Temperature 90 degrees Fahrenheit 100 degrees Fahrenheit 90 degrees Fahrenheit 100 degrees Fahrenheit 100 degrees Fahrenheit
NSF Certified N/A


DIY Installation
Filter Replacement Frequency 6 Months 6-12 Months 1-3 Years 6-12 Months 6-12 Months
Easy Filter Replacement
Filter Change Indicator

Important Contaminants that it Helps Remove


Warranty & Support

Product Warranty 1 Year 1 Year 1 Year 1 Year 1 Year
Customer Support
User Manual

The Filtration Systems Evaluation

1. Aquasana AQ-5300.62

One of the few systems on the market that can actually tend to eliminating chloramines, you are ensured to be drinking and using clean water which is free of any harmful contents after installing it. Its high efficiency is proof of how great it handles the task for which it is intended, this efficiency exceeding 97%. In addition to chlorine and chloramines, the system rids you of other contaminants, including heavy metals, organic chemicals, pharmaceuticals, and cysts. The resulting water tastes fresh and it does not have any traces of odors like it used to, so drinking it will be a whole new experience for you. The filtration media it utilizes include an activated carbon filter, a catalytic carbon filter, an ion-exchange filter, and absolute sub-micron mechanical filtration. It is designed in an Eco-friendly manner, through a safe process and trying to reduce plastic waste so that it does not negatively impact the environment. An aspect you will surely be enchanted by is the fact that filter replacement is as easy as snapping your fingers, so no professional guidance is needed. Furthermore, for high convenience in use, it alerts you when the filters need to be changed, thus taking guesswork and observation out of the picture. Overall, balancing what the system has to offer and the asking price it comes at, we can confidently say that this is the best product in its niche, hands down.

Uses an activated carbon filter, a catalytic carbon filter, an ion-exchange filter, and absolute sub-micron mechanical filtration to deliver clean water
It announces you when the time comes to change the filters
Reduces up to 77 contaminants, including the dangerous and hard to get rid of chloramine
Easy filter replacement and system installation spares you money that you would have to had paid for a professional to step in

Boasting an effective 3-stage filtration which ensures no contaminants will escape it, this system is your go-to solution if you care for your health and want to make sure that you will ingest nothing but clean, pure water from now on. Furthermore, it is quite reasonably priced considering what it offers, and the installation process can be performed without the help of a professional.

2. Pelican Water PDF-1500-PC

The 3-stage filtration process through which this system passes the water you end up drinking and using when you cook has proven to be one of the most efficient as it tends to the removal of almost all encountered contaminants, leaving behind clean, pure water. During the filtration process, it employs a 25-micron pre-filter and two catalytic GAC carbon filters, which not only eliminate dangerous particles, but tend to improving water odor and taste. The small footprint the system boasts is an advantage worth mentioning as it means that even if the space under the sink is limited, this won’t be an issue. It is easy to maintain, all you have to do being to remove the cover and replace the filtration media once every 6 to 12 months, depending on usage. Furthermore, it boasts a hassle-free installation which you can definitely perform on your own, no tools being required for it. Best of all, the carbon filter media inside it helps retain important minerals – like calcium and magnesium – minerals that actually aid boost your health. There are 3 faucet options you can select between to match the décor of your kitchen, more precisely bronze, chrome, and brushed nickel. It boasts a 1500-gallon system capacity. in addition, the manufacturing company backs it with a 1-year warranty.

Carbon media helps it retain calcium, magnesium, and other essential minerals in the water
Passes the water through an effective 3-stage filtration process
It uses a 25-micron pre-filter and two GAC carbon media
Accompanied by a 1-year warranty

Due to the highly effective 3-stage filtration process it employs, this Pelican system is one of our favorite selections, one we strongly recommend you acquire. As it not only filters out contaminants, but it retains beneficial minerals, it’s hard to overlook it as an at home solution for any health conscious person.

3. Crystal Quest Undersink Triple Fluoride System

During the three filtration stages it employs, this system uses a Fluoride filter, a SMART filter, and a carbon block filter to obtain maximum results in terms of contaminant removal. The Fluoride filter media has the obvious purpose of reducing fluoride content in your drinking water, the SMART filter media reduces heavy metals like aluminum, copper, lead, and it helps reduce water hardness, while the carbon block filter media traps particles larger than 5 microns, including dirt, sand, sediment, and silt to ensure the water you end up drinking is as pure as possible. As it measures 16 inches in length, 14 inches in height, and 5 inches in width, it won’t take up a lot of space in the cabinet underneath the sink. It is able to operate at water temperatures ranging from 40 to 90 degrees Fahrenheit, while the operating pressure range is from 20 to 60 pounds per square inch. The maximum flow rate at which it delivers the water is 0.5 gallons per minute. It comes with a faucet and everything you need to go through with the installation process on your own, so there is no actual need for a professional to come in and do the procedure for you. It comes at quite a reasonable price as opposed to most entries on this market, for those who are on a budget being the ideal option. Furthermore, the manufacturing company backs it with a 1-year warranty for parts and workmanship.

Maximum flow rate of 0.5 gallons per minute
Operating temperature range from 40 to 90 degrees Fahrenheit
Maximum operating pressure of 60 pounds per square inch
Employs a 3-stage filtration process for optimum contaminant removal

Install the system neatly under the sink and you won’t have to worry that you are ingesting contaminants when you drink water anymore. In addition to being highly effective at eliminating fluoride, which is obvious as the name states it, the system tends to other contaminants as well, including heavy metals and chlorine.

Common Water Pollutants and the Decay of Our Health

Our need to stay hydrated in order to survive confronts us with a harsh reality – considering how much our health is negatively influenced by the pollutants that lurk in the water we drink. There is no mystery to the fact that bottled water does more harm than good, and seeing how tap water is an even worse source of getting hydrated, it might seem like there is no solution to our problems.

Under sink water filtration systems present the ideal way to stay hydrated without endangering your health as these filters make it a point to remove unwanted and harmful contaminants, leaving behind clean and safe water for consumption. Learn more about the common pollutants that all top of the line water filters eliminate and how their presence in tap water could affect your health by reading the following lines.

  • Chlorine: This chemical is all so present in our drinking water as it has the capability to disinfect it and keep dangerous bacteria, like giardia and E-coli at bay. However, exposure to chlorine on a daily basis and its regular consumption through water can take a toll on your health. If you are lucky, you will only get a rash or irritation caused by bathing in the water. In case your health is on the fritz and luck is not your strong point, you could even have cardiovascular issues or become predisposed to cancer.
  • Lead: This is a dangerous and persistent contaminant that can take a toll on your health in the long run. The bad news is that it has an almost immediate negative effect on children’s health, so if you are a parent, you cannot afford to take risks and get the small one sick. The effects of lead contamination on your health include impaired hearing, damage to the central nervous system, impaired function of blood cells, and so on.
  • Mercury: Poisoning with this harmful contaminant leads to unwanted health effects that include impaired speech, impaired hearing, impaired walking, muscle weakness, loss of peripheral vision, lack of coordinated movements, and so on. One of the most powerful and dangerous pollutants to reside in tap water, it must be eliminated in order to ensure your well-being.
  • VOCs: VOCs or volatile organic compounds is a term applied to a broad category of chemicals, either man-made or natural. When volatile organic compounds found in drinking water reach alarming levels, your health is the first one to receive a downgrade as their toxicity exposes you to the apparition of various forms of cancer, nervous system problems, and kidney health issues.

With a maximum feed temperature of 90 degrees Fahrenheit and a system capacity rating of 600 gallons, the Aquasana AQ-5300.62 is inevitably the number one pick when it comes to under sink filtration systems. Furthermore, its list of pros does not end there as it is actually able to eliminate up to 70 different contaminants, passing the water through 3 separate filtration stages. Aside from this top quality system, another entry which blew us away with its stats and capabilities is the Pelican Water PDF-1500-PC which has a generous 1500-gallon capacity and requires filter replacement only 1-2 per year. However, if you are faced with severe problems in terms of water contamination, we recommend you opt for the APEC Essence ROES-50 or the iSpring RCC7 as both systems can remove over 1000 contaminants.

Frequently Asked Questions

?Does the number of filtration stages matter?
Yes, it does matter through how many filtration stages the water is passed, but this aspect does not top the importance of the specific filtration media utilized in the purification of the water. To put it in simpler words, it is more important for the filter media types utilized by the water purification system to be of a good quality rather than just be a high number of filtration stages through which the water is passed.

?What does the system capacity show?
The system capacity shows what is the amount of water the filtration system can purify before the filter will require replacement. Obviously, it is better to go for a bigger capacity product when it comes to this aspect as you will have less maintenance work to worry about. Additionally, you won’t be spending as much money either as you will buy the media more rarely.

?What is the role of the filter change indicator?
Depending on how much the filtration system is being used, it will eventually need to be replaced as its efficiency will drop and it won’t be able to handle removing the contaminants which lurk in the water anymore. Furthermore, all filtration media have their own lifespan, generally lasting from half an year to 12-18 months. When the time does come for this replacement to take place, you will be announced by the filter change indicator. Thus, its purpose is very important in the efficiency scheme of the filtration system, being valuable as it eliminates guesswork completely.

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