Water Appliances

Best Under Sink Water Filter Reviews 2019 – Ultimate Buyer’s Guide

Best Under Sink Water Filter Reviews

Ever wondered why there’s so much hype about under-sink water filter systems?

There is a reason why water pollution is considered the deadliest of all. It can cause serious implications on the human body, due to elements like lead. You could have relied on the communal water supply a decade or so back, but that’s not the case now.

To take the example of the Flint Water Crisis, the safety of 10,000+ people were compromised when due to lack of treatment. In addition, several studies have proven that a huge number of US households receive water that has an accumulation of lead, arsenic and other deadly chemicals. The point is that it’s really a long shot to trust the water treatment programs used for the feed water.

Although many types of filtering systems are available, an under sink water filter system offers convenience, effectiveness, and safety. That’s also the reason why experts recommend the use of these devices at home. And, if you were looking for the best under-sink water filters, you’re at the right place.

RankingName and BrandStagesFiltration TechWater ProductionCheck Price
#1Home Master TMHP-L Loaded 9RO and UV75 GPD View_on_Amazon
#2APEC Top Tier 6-Stage RO6RO75 GPD View on Amazon
#3iSpring RCC7P High Capacity Under-Sink5RO75 GPD View on Amazon
#4APEC WFS-1000 3 Stage Under-Sink3CarbonNIL View on Amazon
#5iSpring RCC1UP-AK 7-Stage Under Sink7RO and UV100 GPD View on Amazon
#6iSpring RCC7AK 6-Stage6RO75 GPD View on Amazon
#7Global Water RO-505 5-Stage Under-Sink5RO50 GPD View on Amazon
#8Express Water Ultraviolet RO6RO and UV100 GPD View on Amazon
#9Home Master TMAFC-ERP UndersinkNILRO50 GPD View on Amazon
#10Home Master TM-ERP-L Standard UndersinkNILRO75 GPD View on Amazon

#1 Home Master TMHP-L Loaded Undersink Water Filter System

This is an under sink water filter system that has been designed for health-conscious individuals. If you think a standard 3-stage or 5-stage filtering system isn’t enough for you, you should get something with nine different levels of purification. This has been powered by both Reverse Osmosis and Ultraviolet Lighting so that 99% of harmful organisms and chemicals are removed from the feedback.

Home Master TMHP-L Loaded Undersink Water Filter System

Another impressive thing about this water filter is its re-mineralization process. It’s likely that RO and UV may remove some essential minerals from the feed water. However, thanks to the patented technology, Home Master TMHP-L Loaded Undersink Water Filter System can include calcium and magnesium minerals to the final drop of water.

Pros
  • Comprehensive Filtering System
  • Enhanced Flow Rate & Water Efficiency
  • Built-in Remineralizer
Cons
  • Installation is time-consuming
  • Expensive

Editor’s Verdict: Home Master TMHP-L Loaded Undersink Water Filter System is the best choice if you don’t mind spending a bit more for quality. The 9-stage filtering system makes sure that not a single chemical or microorganism survives the system. It delivers the best-tasting water as well.

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#2 APEC Top Tier 6-Stage Reverse Osmosis Water Filter

Even when you’re not a health freak, you may demand a high-quality under the sink water filter. In that case, we would recommend the APEC Top Tier 6-Stage Reverse Osmosis Water Filter. Along with the six stages of continuous filtering, it has options for pH level enhancement as well. It does not matter if you’re treating tap water or well water; this filter can deliver the best safety and taste.

APEC Top Tier 6-Stage Reverse Osmosis Water Filter

Compared to advanced choices, APEC Top Tier 6-Stage Reverse Osmosis Water Filter has a simple installation process. Also, you would not have to replace the filters frequently. All these make it one of the best solutions for unlimited pure water supply. You’re also getting an elegant dedicated faucet, which should blend in with modern kitchen styles. You are not getting anything fancy like UV filtering in the package, though.

Pros
  • Performance-friendly Filtering System
  • Alkaline-based Remineralization
  • Easy to Install
Cons
  • Lacks UV Treatment
  • Wastes More (Contaminated) Water

Editor’s Verdict: We’d recommend APEC Top Tier 6-Stage Reverse Osmosis Water Filter if you need a higher-quality water filter without spending too much. It’s one of the easiest-to-install water-filter systems as well in the market.

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#3 iSpring RCC7P High Capacity Under-Sink Water Filtration

Do you get feed water with low water pressure in your household? In that case, this 5-stage Reverse Osmosis water filter system would be a great companion. It’s powered by an electrical booster that delivers a constant amount of water, regardless of varying water pressure. At the same time, the five stages of filtration can help you get rid of 99% of chemicals.

iSpring RCC7P High Capacity Under-Sink Water Filtration

There are a few features that exponentially preserve water. For instance, the automated on-and-off feature is very helpful. Another impressive feature is due to the electric booster, which enhances RO production to the maximum level. Unlike the previous models, it has a Filtered Water to Waste Water ratio of 1:1.5. In the long run, you end up losing less water.

iSpring RCC7P High Capacity Under-Sink Water Filtration Internal

Pros
  • Electric Booster to Enhance RO Production
  • Extra Performance
  • Low Water Wastage
Cons
  • Lacks remineralization
  • Peripherals are cheap

Editor’s Verdict: If you live an area with low-pressure feed water, iSpring RCC7P High Capacity Under-Sink Water Filtration is one of the best under sink water filters to get. It just has five layers of filtration and lacks re-mineralization, but it gets the job done.

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#4 APEC WFS-1000 3 Stage Under-Sink Water Filter

When your area provides better de-contamination methods, you can survive with a simple under-sink water filter system. APEC WFS-1000 3 Stage Under-Sink Water Filter is one of those options, where you don’t have to spend a lot either. Even then, this filter offers standard protection against contaminants like dust as well as chlorine. This particular product comes with boosted performance.

APEC WFS-1000 3 Stage Under-Sink Water Filter

Compared to some of the other 3-stage filters, APEC WFS-1000 3 Stage Under-Sink Water Filter has extended life-span. Because there is no tank, the flow rate was also impressive. This water filter will be the superb choice if you don’t want to waste much water. While it does not have a dedicated re-mineralizer agent, the filters are supposedly designed to keep the necessary minerals intact.

APEC WFS-1000 3 Stage Under-Sink Water Filter Rods

Pros
  • Easy to set up and maintain
  • Low water wastage
  • Extended life-span
Cons
  • Doesn’t filter contaminants like lead
  • Less effective than RO

Editor’s Verdict: APEC WFS-1000 3 Stage Under-Sink Water Filter would be our recommendation if you live in an area with somewhat filtered feed water. This product offers easy installation, longer life and indeed the best filtering, but it cannot protect you from big issues like lead.

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#5 iSpring RCC1UP-AK 7-Stage Under Sink Water Filter System

There are times when you need so many filtration systems in one package. iSpring RCC1UP-AK 7-Stage Under Sink Water Filter System fits the profile and comes at a reasonable rate. Compared to other water filters we reviewed earlier, this one has enhanced performance and better drain ratio. At the same time, Reverse Osmosis membrane in this filter is capable of 100 Gallons per day.

iSpring RCC1UP-AK 7-Stage Under Sink Water Filter System

It comes with an internal booster pump, Remineralization filter, and UV Sterilizer. So, you can get the purest amount of water without affecting the taste or nutritional values. The UV Sterilizer functions automatically — it turns on and off according to water flow. We also loved how sturdy the construction happens to be. Installing iSpring RCC1UP-AK 7-Stage Under Sink Water Filter System can be a piece of cake.

Pros
  • Comprehensive filtration
  • UV Filter and Remineralization
  • Less Drain and Extra flow rate
Cons
  • Incompatible parts

Editor’s Verdict: We’d surely recommend iSpring RCC1UP-AK 7-Stage Under Sink Water Filter System if you are looking for a comprehensive filtration system without a hefty price tag. It does not compromise in any important sector and even has a simple installation system.

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#6 iSpring RCC7AK 6-Stage Water Filter System

Are you looking for a water filter that offers plenty of features without a hefty price tag? You should go for the iSpring RCC7AK 6-Stage Water Filter System, which is quite impressive. Of course, you won’t get anything like Ultraviolet filtering, but the filter does the basic job. This is not the most performance-friendly filter on the market, but you can live with it. It also has a water flow rate of 75GPM and a drain ratio of 1:3.

iSpring RCC7AK 6-Stage Water Filter System

Of course, there are a few areas where iSpring RCC7AK 6-Stage Water Filter System makes a compromise. It does not offer the best-quality accessories for instance. The valves and the faucets are not really great when it comes to quality. Because there is no booster pump, you cannot expect much water-flow speed either. It, on the other hand, produces well-tasting water.

Pros
  • Usable Water Flow
  • Easy to Install
  • Standard Performance
Cons
  • Accessory Quality isn’t good

Editor’s Verdict: iSpring RCC7AK 6-Stage Water Filter System is not the best choice for health freaks, but this filter does the job better than a simple water filter. You wouldn’t have to worry about bad-tasting water or major contaminants, but the accessory quality is not good enough.

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#7 Global Water RO-505 5-Stage Under-Sink Water Filter

Are you looking for an even affordable deal that delivers standard performance? Make sure you give Global Water RO-505 5-Stage Under-Sink Water Filter a try. It has a price less than your favorite smart speaker on the market, but it can almost save your life. The package consists of everything to set up the under-the-sink system, including high-quality accessories and a well-built faucet. Even the included filters are so effective.

Global Water RO-505 5-Stage Under-Sink Water Filter

With its five stages of detailed filtration, Global Water RO-505 5-Stage Under-Sink Water Filter can bring you the best-quality water. Of course, it does not have options for lead removal or Alkaline remineralization. So, it’s likely that you may lose the taste of real water. Not that we deserve them at this price, but the package consists of three extra filters as well.

Pros
  • Quite inexpensive
  • Easy to set up and use
  • Offers free filter replacements
Cons
  • Not Performance-friendly
  • Not a long-term investment

Editor’s Verdict: We understand that there are people who need a 5-stage water filter at a lower cost. Global Water RO-505 5-Stage Under-Sink Water Filter is for them. Don’t expect any fancy features here, but it will help you get rid of major contaminants.

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#8 Express Water Ultraviolet RO Filtration System

Here is another option if you need a water filter with amazing performance and a slightly lower price tag. If you ask us, we love everything about Express Water Ultraviolet RO Filtration System. It offers a superb flow rate of 100 Gallons Per Day, despite the six-stage filtration system and inbuilt UV program. In short, this is the way to high-quality, non-contaminated water without worrying about limits.

Express Water Ultraviolet RO Filtration System

Express Water Ultraviolet RO Filtration System would also be one of the less expensive water filters to offer lead removal. Thanks to the combination of RO and UV, you don’t have to chemicals and microorganisms; it is also suitable for well water. We wish it had an option to enhance the mineral elements in final waterdrops though. We also loved how aesthetically appealing the faucet it; it simply blends with a modern interior.

Pros
  • Higher delivery rates
  • Built-in Optimized UV
  • Inexpensive
Cons
  • Lacks mineralization

Editor’s Verdict: Express Water Ultraviolet RO Filtration System is indeed the best deal if you are looking for an effective yet affordable water filter system. It even offers some features that we haven’t seen in some of the higher-priced models.

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#9 Home Master TMAFC-ERP Undersink Water Filtration System

Home Master TMAFC-ERP Undersink Water Filtration System has been designed to overcome the limitations of a normal RO system. To be frank, the attempts are quite successful as well. You can have better-quality water by paying almost the same price. For instance, it’s using catalytic carbon to create the filtering layer. This would result in more contaminants being stopped from entering your faucet.

Home Master TMAFC-ERP Undersink Water Filtration System

It is very easy to install this water-filter system. The modular design makes it easy to replace all the filters — without a hassle. The water flow rate has been increased by around 80%. At the same time, there has been no compromise over quality. We really loved how such an easily-installable water filter system offers such a high performance.

Pros
  • Better performance than Traditional RO
  • Affordable price tag
  • Enhanced filtering layer
Cons
  • Lacks advanced options like remineralization

Editor’s Verdict: As said earlier, Home Master TMAFC-ERP Undersink Water Filtration System is an upgrade from the typical RO systems you have seen. Obviously, there is a boost of quality, but you don’t get features like remineralization.

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#10 Home Master TM-ERP-L Standard Undersink Water Filter

We had already covered a full-stacked water filter from Home Master, but this is different. The Home Master TM-ERP-L Standard Undersink Water Filter is noted for the amazing set of features and the modular design. It is undoubtedly one of the best water filters you can find in the market right now. The Fast Flow RO Kit is used to enhance deliverability of water up to 75GPD.

Home Master TM-ERP-L Standard Undersink Water Filter

At the same time, the in-built pump ensures the least amount of water wastage from the device. This snug-fit package can be assembled and set up in a matter of minutes, which is great. Even when it comes to filter changes, the process is incredibly simple. Last but not least, the product exceeds the specifications set by the National Science Foundation.

Pros
  • A complete, modular package
  • Better water delivery rates
  • Easy maintenance
Cons
  • Could have included UV/Remineralization

Editor’s Verdict: If you are ready to pay something extra for high water deliverability and low water wastage, Home Master TM-ERP-L Standard Undersink Water Filter is a potential option. You don’t get extra features like remineralization/UV though.

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Buyer’s Guide for Under-Sink Water Filters

Now that you have seen the best under sink water filter reviews, there’s something else you must know. If you want to pick the most suitable water filter for your needs, make sure you check out the following buyer’s guide.

How to Pick the Right Under Sink Water Filter For Your Home

As you have seen above, not all under sink water filter systems are made the same.

The choice depends upon many factors too. For instance, if you are in a potentially dangerous area, you need a water filter with maximum protection. In another scenario, if you are in a well-off location with proper sets of de-contamination by authorities, you may be better off with something simpler.

In any case, you can explore the various aspects before making the selection.

The Type of Water Filter

Different types of under-sink water filters are available in the market.

Simple Under Sink Water Filters can be connected to your cold water line and it would deliver filtered water through the same faucet you have been using. It’s easy to set up and is often powered by a single filter. The problem is that you cannot use this to filter hot water. Also, filters need to be replaced more frequently.

Conventional Under Sink Water Filters are a whole different set of the device. Feed water is diverted to the filter via a dedicated cable; once filtered, the water will be delivered via a dedicated faucet. It means that you will have to install another faucet on your sink. The filtering process is very effective and the filters last long.

The Right Water Filtration Tech

Different water filters are powered by different technologies or the combinations of many.

Reverse Osmosis makes use of a semi-permeable membrane. When water passes through the membrane, a number of dangerous particles are held back. Then, the filtered water is delivered. It’s used very commonly.

Ultraviolet technology is using the ultra-violet spectrum of lights to treat viruses, bacteria and other bodies that can cause water-borne diseases.

Activated Carbon is a common technology used to remove elements like chlorine, pesticides and some other particles present in water.

Most of the water filters we’ve listed above are using combinations of these techniques.

  • Water Pressure

A good under-sink water filter would have high water pressure as well. It means that you don’t have to wait for minutes to fill a glass full of water.

  • Ease of Installation

You shouldn’t have to hire a plumber to install a water filter system. Before you finalize a particular product, you should see how easy it is to install the filter under sink. One important aspect is whether you will have to drill a hole for attaching the additional faucet.

  • Maintenance

The case is similar to that of installation. Of course, this depends upon the type of filters being used. If the filter has a huge filtering rate, you will have to replace them more frequently. It’s thus recommended to choose a filter system that requires less maintenance.

  • Filtering Capacity

You should choose the desired water filtering capacity depending on the household. For instance, a big house cannot live with 50 Gallons per Day. So, you should choose a water filter with corresponding capacity as well as performance.

  • Budget

After deciding the above aspects, you can check out the price tag. The best thing about water filters is that you can find them at all budgets. For instance, you would find 7-stage and 3-stage filters at sub-$250 price bracket, but other features may differ.

See Also:  Best Water Filter Pitcher 2019 - Reviews and Guide

Frequently Asked Questions

Now, let’s answer some of the commonly asked questions about under sink water filters.

1. Which under sink water filter is best?

This depends upon your purpose. If you need basic filtering, you can have a simple water filter. Instead, if you are looking for something advanced, Conventional Filters are better.

2. How long do under sink water filters last?

It varies according to several factors. For instance, the amount of contaminants in the feed water is the main reason. At the same time, construction quality and durability of the filter system will also have an impact.

3. Which water filter removes the most contaminants?

It’s recommended to choose a water filter system that combines Reverse Osmosis, Ultraviolet and Carbon filters. This ensures that chemicals, dust or microorganisms don’t enter your faucet water.

4. Do water filters take out calcium?

Most filters remove calcium from the feed water as a part of the purification process. However, some of the products now come with re-mineralization technique, where extra minerals are added to boost the quality and taste of the water.

5. How do you know when to change your water filter?

The product manual should have mentioned the optimal frequency of changing the filters. Of course, this is when the product has filtered the recommended amount of water per year/month.

6. Do I need high feed water pressure to use a filter?

Some filter systems demand a particular water pressure from the feed water. At the same time, some of the devices use an additional booster to increase the pressure.

  • Home Master TMHP-L Loaded
  • APEC Top Tier 6-Stage RO
  • iSpring RCC7P High Capacity Under-Sink
  • APEC WFS-1000 3 Stage Under-Sink
  • iSpring RCC1UP-AK 7-Stage Under Sink
  • iSpring RCC7AK 6-Stage
  • Global Water RO-505 5-Stage Under-Sink
  • Express Water Ultraviolet RO
  • Home Master TMAFC-ERP Undersink
  • Home Master TM-ERP-L Standard Undersink
4.6

Summary

We hope you loved our list of the best under sink water filter. We’ve kept the water filter reviews as brief as possible, but you would have the insight for sure. One advice we have is that you should never compromise features for the sake of saving some money. After all, you’re paying all these money to get healthy and non-contaminated water. As we said in the beginning, it’s a long-shot to trust the communal water treatment.

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About the author

John Clark

John has been working in consumer appliances store for past 16 years. He is very passionate about his work and looking for various appliances reviews from his customers in those years. He loves to write well-researched articles on various home appliances.

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