5 Best Under Sink Water Filter Pitchers [2021]: Reviews & Buying Guide

Updated: Jun 16

#1 Filtrete Advanced Under Sink Quick Change Water Filtration System – Finest Undersink Water Filter

  • Product dimensions: 4 x 6.8 x 14 inches

  • Weight: 3.05 pounds

  • Efficiency: 99.99%

More Features: It does not disrupt the water flow of your faucet since the filter permits complete faucet flow. A maximum of 1.5 gallons of water can be filtered in a minute.

Filtrete’s under sink purifier rids the water of any and all contaminations, for example, chlorine which is a chemical that produces a bad odor and pollutes the water making it taste bad and unhealthy for consumption. Cysts, soils, sediment, rust, and other toxic substances such as lead, medicinal and chemical waste are also eradicated from the water (totally depending on the type of system you end up buying). Filtrete’s under sink purifier is unable to filter fluoride and its compounds. The filter has to be replaced within six months (2000 gallons of water) of installation.

The filtering system is easy to install and can be mounted on the current faucet. A filter head/bracket, adapter, Hex Nut compression, and ferrule come with the whole package. A filter cartridge and a filter substitution recall sticker are also available. Installing the entire system takes less than 30 minutes.

The item also includes a 1-year limited warranty and installation instructions. The unit fulfills standards 42 and 53 of the NSF.

There are three under sink water filters that you can choose from that is maximum, advanced, and standard. You can easily switch between the three filters. At the same time, maximum is the best one out there as it thoroughly filters out the lead. A steady pressure of 25 to 125 psi is required for Filtretes under sink filter to operate efficiently.

#2 CuZn UC-200 Under Counter Water Filter – Undersink Water Filter with Highest Filtration Capacity

  • Product dimensions: 4.5 x 4.5 x 15 inches

  • Weight: 8 pounds

  • Filter life: 6 months

More Features: It improves the flavor of water and removes the foul odor. This method is also bacteriostatic, which inhibits mold or fungus growth.

This is a high-quality water filter pitcher that is FDA approved and BPA free. Unlike most water filter pitchers, the Aquagear filter removes contaminants in five critical and high efficient steps.

The process ensures harmful compounds such as mercury, fluoride, and arsenic. It retains healthy minerals like calcium and magnesium. It has triple capacity filters and can filter up to 150 gallons before replacement.

#3 Woder 10K-Gen3 Ultra High Capacity Under Sink Water Filter – Best Undersink Water Filter to Remove Lead

  • Product dimensions: 3 x 3 x 15 inches

  • Weight: 2.85 pounds

  • Water flow: 2 GPM

More Features: The Woder filters are also tested for fresh, pure and healthy water such as spring water according to the ANSI (American National Standards Institute) standards.

It is best to know beforehand that Woder filter works best only with cold drinking water, which has already been disinfected, or you can say the municipal drinking water. Woder filters are not intended to purify or disinfect well water. Furthermore, salty or soft water cannot be decontaminated using this filter.

This filter does not require the hassle of plumbing. Instead, it has two hoses that can be directly connected to the faucet and a standard valve to start the filtering process and hence provide you with clean water. It is designed keeping in mind a basic US kitchen or washroom sink and so can be simply connected to any of those. It also has a whopping three years or 10,000 gallons of filtering capacity. Furthermore, it allows the flow of two gallons of water per minute.

Woder provides clean and safe water without harming chemicals such as chlorine, chromium 6, heavy metals, mercury, and lead. In addition to reducing turbidities and carcinogens, the filter reduces its smell and unpleasant taste. Selective filtering enables vital and beneficial components to pass through. Calcium, potassium, sodium, magnesium, phosphorus, chloride are all included.

#4 Aquasana 3-Stage Under Sink Water Filter System – Removes Contaminants up to 99%

  • Product dimensions: 12 x 4.2 x 9 inches

  • Weight: 6 pounds

  • Filter life: 600 gallons of water

More Features: The setup is simple and easy to do on your own. Replacement of the filter is also simple: twist open the case, remove the plastic housing, and replace the filter.

The Aquasana water filtration system not only looks after humans but also ensures that pets have access to safe and healthy water. Not only would your beverages taste better, but the quality of your food would improve as well if you used this water.

This immediate source of purified water removes up to 99 percent of contaminants from water. Mercury, insecticides, pharmaceuticals, lead, chlorine taste and odor, chloramine, sediment, rust, and silt are all removed from the water. The sediment pre-filter activated carbon filter and catalytic carbon filter are all part of the three-stage filtration process.

It has a 600-gallon filter life. You can also replace the filter cartridge after six months or so of use. Aquasana provides water that is both additive-free and waste-free. Furthermore, no harmful impurity returns to the water, polluting it.

It not only eliminates contaminants from water, but it also keeps calcium and potassium, two essential minerals, within the water.

#5 Culligan US-600A Undersink Drinking Filtration System – Supports Different Culligan Filter Cartridges

  • Product dimensions: 4.8 x 4.8 x 12.8 inches

  • Weight: 1.74 pounds

  • Water flow: 1 GPM

More Features: The unit can clean approximately 1,000 gallons of water before needing to replace the cartridge. A five-year warranty is also included with the filter. It also has a 60psi pressure and delivers 1 gallon of water per minute.

The Culligan US-600A connects to the existing water faucet and does not require an additional faucet. It provides drinkable and cooking water that is free of contaminants. The quick attach mounting brackets make installation and cartridge replacement a breeze. Its slim design makes it easy to fit under the sink in tight spaces.

The filter cartridge included with the unit is a D-20A, but it is also compatible with D-10A, D-30A, and D-40A filter cartridges. The installed D-20A filter cartridge removes chlorine as well as bad water taste and odor from the tap water. Aside from that, it can also reduce the odor and taste of chlorine.

One disadvantage of this unit is that, despite the fact that it is advertised as being simple to install, it is not. It also includes flimsy fittings.

Under Sink Water Filter Pitchers Buying Guide

First and foremost, you must decide which type of under-sink water filter you want to buy. When compared to traditional under-sink water filters, simple under-sink water filters are unique. To begin, you must first comprehend the differences between them.

Under-sink filters are simple to install and operate. Instead of using a separate faucet to deliver the filtered water, they use your regular sink faucet. Because these filters can only connect to the cold water line, they can only filter cold water.

A traditional under-sink filter, on the other hand, necessitates the use of a second faucet to provide filtered hot and cold water. When the water has been filtered, it is directed to the other faucet, where you can drink and use water for various purposes. The unfiltered hot and cold water is dispensed through your regular faucet.

When we compare the simple and conventional filters, we can see that the simple ones are much easier to set up. You won't need to make any changes to your sink, and you won't need an extra faucet. However, you may need to change your filters frequently. Furthermore, because these units have a higher flow rate, it's possible that some contaminants will remain in the water.

When it comes to traditional under-sink filter units, they are also simple to install. They filter the water more effectively and eliminate the need to replace the filter cartridge on a regular basis. However, you'll need an extra faucet to get the filtered water, and you'll have to modify your sink to make room for it. In addition, when compared to simple under-sink water filters, these units have a lower flow rate.

Ability to Remove Impurities

A filter's filtering capacity is determined by the cartridge's components. Some filters have a high filtration capacity, allowing them to remove the majority of harmful contaminants from water with ease. However, some filters, despite their high filtration capacity, are unable to remove specific contaminants. This is due to the fact that the cartridges do not contain the necessary materials.

As a result, it is critical to test your water to determine which contaminants in your tap water are detrimental. Then try to find a unit that can effectively deal with them.

Pressure of Water

Water pressure is also something to think about. It's beneficial to have a unit that can provide adequate water pressure. When comparing simple and conventional under-sink water filters, simple units provide better water pressure than conventional ones. However, you should be aware that some contaminants may pass through the filer due to higher water pressure. When water passes through the filter without spending much time there, it fails to remove all of the impurities.

So, if the incoming water is less contaminated, you can use units with high water pressure, but if it is contaminated, you'll need to use a traditional under-sink water filter with low water pressure.

Longevity of a cartridge

The life of a cartridge is largely determined by the quality of the water you use. Your cartridge's life span will be shortened if it is highly contaminated, but it may live longer if it is filled with fewer impurities.

Some cartridges need to be replaced every six months, while others have a life span of two, three, or five years.

Process of Installation

It's ideal to have a unit that can be installed quickly and easily. Because a difficult installation may cause damage to your system, it is preferable to choose a unit that is simple to install. Not only will it save you time, but it will also save you money.

These under-sink filters come with an easy-to-follow installation guide and videos to assist you in setting up the unit. However, if you are unable to install it yourself, you will need to hire a plumber.

Aside from that, the filter cartridges must be simple to replace. To replace the cartridge in some units, you'll need to be an expert. Some filtration systems, on the other hand, allow for simple filter cartridge replacement. As a result, choosing a unit that allows for easy filter replacement is critical.

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