Best UV Water Purifiers of 2021 | Comparison & Reviews

Best UV Water Purifier Reviews
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In the 21st century, we have technologies that save us from consuming anything harmful to our health. You can install a water filter system that removes contaminants from your water and a UV filter that removes microscopic germs from the water. Sometimes some of the most advanced filtration systems have UV purification features in them, or if you already have a water filter system installed, you can always get a UV water filter separately.

We have prepared a list of both of these water purifiers for you to make a better buying decision.

Best UV Water Filter
iSpring RCC7AK (Best Overall)
  • Filter Stage: 6
  • Max. Filtered Water Flow: 0.05 GPM (75 gallon per day)
  • Tank Size: 3.2-gallon
  • Permeate Pump Included: No
  • Cartridge Life: Stage 1,2,3,6 (6-month), stage 4 (2-years), stage 5 (1-year)
  • Weight: 32 pounds (Whole Package)
  • Warranty: 1 year
HQUA-OWS-12 (Cheapest)
  • Filter Stage: Only UV
  • Max. Filtered Water Flow: 12 GPM
  • Permeate Pump Included: No
  • Weight: 7.9 Pounds
  • Warranty: 6 month on lamps, 1 year on Ballast, 10 years on UV Chamber
iSpring RCC1UP-AK (Highest Filtered Rate)
  • Filter Stage: 7 Stage
  • Max. Filtered Water Flow: 0.07 GPM (100 gallon per day)
  • Tank Size: 2.5-gallon
  • Permeate Pump Included: Yes
  • Cartridge Life: Stage 1,2,3 (6 months), Stage 4 (2-3 years), Stage 5,6 (12 months)
  • Weight: 35.2 pounds
  • Warranty: 1 year
  • Filter Stage: 7 Stage
  • Max. Filtered Water Flow: 0.052 GPM (75 gallon per day)
  • Tank Size: 2.5-gallon
  • Permeate Pump Included: No
  • Cartridge Life: Stage 1,2,3,5,7 (6-12 months), Stage 4,6 (2-4 years)
  • Weight: 25 pounds
  • Warranty: 1 year
Express Water ROUV10DCG
  • Filter Stage: 6 Stage
  • Max. Filtered Water Flow: 0.8 GPM (100 gallon per day)
  • Tank Size: 3.2-gallon
  • Permeate Pump Included: No
  • Cartridge Life: PAC,RO Membrane (1 year), UV(6-12 months), ALK & DI (6 months)
  • Weight: 28 pounds
  • Warranty: 1 year

Best UV Water Purifier Reviews

1. iSpring RCC7AK-UV 7-Stage RO Filtration System with UV Filter

iSpring RCC7AK-UV 7-Stage RO Filtration System with UV Filter

We are always conscious of the food that we consume, but we often miss seeing that the water we drink needs to be purified. iSpring’s NSF-certified remineralization and UV filtration RO system removes 99% of the contaminants from the water.

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The system filters the water in 7 stages, the water is then remineralized with alkaline, and before coming out of your tap, the UV light removes any microbes from the water.

Now, You’d wonder why UV light is important. Without the UV light, the microorganisms and bacteria like E.coli, cryptosporidium, etc., will find their way into your glass. These viruses are responsible for many diseases. UV light makes sure there are no viruses, bacterias, or microorganisms in the water you drink.

iSpring’s 11-watt UV light filter removes all kinds of viruses from your water, and it turns itself on and off whenever you open or close the tap. Their special sensor in the system, when turning on and off on its own, increases the lifespan of the UV light.

Installing this whole UV filter system makes your hard water soft and is very easy to install. This filtration system makes your water highly purified, and the UV light of the system makes sure that any toxins from the water are removed.

With its RO system, Alkaline remineralization, and UV light, you get the highly purified water coming out of your tap without a doubt.

What we like
  • UV Filter with automatic sensor
  • Alkaline Remineralization
  • 7 stage RO filtration
What we don’t like
  • Installation can be complicated

2. iSpring RCC1UP-AK 7-Stage RO UV Filtration System

iSpring RCC1UP-AK 7-Stage RO UV Filtration System

Why get separate different filtration systems when you can get 3 in one filtration that purifies, remineralizes, and removes microscopic germs with its UV filter. The whole system removes more than 1000 contaminants from the water, including lead, arsenic, and asbestos.

The special booster pump of the system makes the process of filtration efficient without any negative changes in your water flow. The 7-stage UV filtration system not only purifies your water but also improves the taste of the water.

Philips Ultraviolet light of the system has an automatic sensor that knows when you’re pouring the water out of the tap, and it turns itself one and off based on the use.

Basically, it is wired to turn itself in 3 minutes without use. Having a UV light in your water filtration system makes sure that there are no microorganisms in the water that you consume.

The installation of this system is very easy and frustration-free, and you will get an instructional manual with the purchase you can follow. iSpring’s exceptional customer support will be ready to help you with it.

The booster of the system fills up your tank quickly for you to use, all the while making it perfectly pure for you. There is an alkaline remineralization filter included in the system for adding alkaline to your water. Get this all-in-one RO water filtration system and get healthy water for your family.

What we like
  • Easy Installation
  • UV light
  • Booster pump
  • Softens the water
What we don’t like
  • The filter changing can be expensive

3. APEC ROES-PHUV75 RO & UV Sterilizer Filter System

APEC ROES-PHUV75 RO & UV Sterilizer Filter System

If you are getting a water filter system, why get any average system? APEC presents you with a filtration system that removes 99% of contaminants from water. The process of purifying the water begins with its 7 stages of filtration; after that, the system mineralizes the water with Alkaline.

Once you open the tap for dispensing, water passes through the UV light filter eliminating any bacteria, virus, or microbes from the water.

The filters keep the pH level of water at a healthy level. Get tasty, odorless, and healthy water just by opening your kitchen tap. The filters are made from exceptional quality food-grade material, removing all the worries about the quality and performance.

The UV light’s continued sterilization removes all the parasites, bacterias, and viruses from the water, giving you extra security against water-borne disease. With the purchase of the system, you get a lead-free designer faucet.

You get all the parts needed for the installation of the system. You can easily install the filter system under your sink and get 75 gallons of water in a day out of it. Because of its amazing filtration, the system makes its way into the list of the best UV water filter systems.

This premium quality UV water purifier is designed and made in the USA, keeping in mind your need and requirement of performance and quality. You can request a warranty on the system from the service provider.

What we like
  • UV sterilization
  • 7-stage filtration
  • Maintains the pH level of water
  • Eliminates 99.99% of the contaminants
  • Doesn’t change the water pressure
What we don’t like
  • The water waste ratio is high
  • Some customers have opinions about the installation being complicated

4. HQUA-OWS-12 Ultraviolet Water Purifier Filter

HQUA-OWS-12 Ultraviolet Water Purifier Filter

Your filter system is incomplete without a UV purifier in it. No matter how advanced your filtration system is, if there is no UV purifier to remove the remaining microbes and bacterias, you will be drinking the same impure water.

Installing the UV purifier is child’s play and takes only a few minutes of your precious time. One most important piece of advice that has been given with the instructions is that it should be installed horizontally instead of vertically.

This UV purifier doesn’t make any changes in how the water tastes. The purifier is affordable and works more efficiently than it’s worth.

The complete system consists of a stainless steel chamber, UV lamp, mounting rings, and an adapter to get the lamp started. The HQUA offers one extra UV lamp with purchase. It just takes a minimal amount of time and effort to install this UV purifier.

The provider guarantees 99.99% removal of bacterias, viruses, and parasites, cleaning up to 12 gallons of water per minute. When you are using a chamber of crystal with the UV light purifier, you have to change it every 12 months, and this duration can be different based on the usage of your water.

There are so many waterborne viruses that we are not even aware of, causing diseases. Having a UV light with your filtration system will protect you from all of these risks.

What we like
  • Easy installation
  • 9000 hours of bulb life
  • Removes 99.99% of the germs
  • Long-lasting stainless steel
What we don’t like
  • Can heat up a water a little
  • Poor customer service
  • High maintenance

Related Article:

Best Fluoride Water Filters

Best Water Filter Pitchers

Best Hot Water Dispensers

5. Express Water ROUV10DCG Ultraviolet RO Water Filtration System

Express Water ROUV10DCG Ultraviolet Water Filtration System

Express water’s 6 Stage UV RO filtration system makes its way on our list of best UV water purifier systems because of its easy installation, cost-effectiveness, and exceptional performance in cleaning the water.

The UV sterilization removes major viruses like E.coli from the water, and it also eliminates any bacterias, microorganisms, parasites, etc., from the water in order to deliver you perfectly purified water. The system comes with an equally premium water faucet.

It has the capability of giving the user 100 gallons of purified water per day. The whole system removes 99% of contaminants from the water, including microbes.

The 6 stage filters remove lead, algae, pesticides, chlorine, and many bacterias from the water to make it pure for you. It comes with pre-assembled parts making your installation process frustration-free.

You can fully trust this water filter system with UV light to make your water pure as it removes every contaminant, bacterias, etc., from the water. Express water provides a 1-year warranty on their system, making it one of the ideal choices among others.

From installation to usage and filter change, the system is certified as frustration-free. If you have a bad taste or odor in your municipal water, the filtration removes any of that from your water to make it taste better. Express water is also known for its helpful customer support that is praised by almost all of their customers.

What we like
  • UV light filtration
  • 6 stage water filtration
  • 1-year warranty
  • Better tasting water
What we don’t like
  • The filters need changing twice a year
  • Requires a lot of space under the sink

What is a UV Water Purifier, and How does it Work?

UV light or ultraviolet light is an advanced method of removing germs and bacteria that somehow find their way through the filters. What UV light does to harmful pathogens and microorganisms is that it attacks their DNA in a way that they cannot reproduce and kills them.

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Purifying your water with UV light is environment-friendly, easy to use, and install.

Installing a UV purifier with your filters will make your water chemical-free. UV purifiers also eliminate any microbes responsible for bad taste or smell in your water. It is the most effective way to remove bacterias from the water, and it has been proven that the UV purifier removes 99.99% of the microorganisms from the water.

However, it’s wise to use the UV purifier with any standard filter systems so that there is no chlorine or large sediments in the water. If the water is not purified of these contaminants, the UV purifier will not work as efficiently.

Benefits of using a UV water purifier

No foul taste or smell in the water

Besides removing the harmful bacterias from the water, the UV purifiers remove any bad taste or smell from the water. It attacks the bacteria or microbes that cause the water to taste bad.

Low maintenance

UV water purifiers are very low maintenance, and it takes only a few minutes to install them. You can get a meter that will keep track of your UV lamp, and based on that, you can change that. Some UV purifiers also suggest removing the crystal capsule that holds the UV lamp and cleaning it on a timely basis. It just takes 5 minutes of your time to do so. However, each different UV purifier has a different maintenance process that will be mentioned in your instructional manual.

Safe drinking water

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You never know what type of contaminants are there in your municipal water, and there may be so many contaminants in your water that are hazardous to your health. Having a UV water purifier ensures that there are no viruses, bacteria, parasites, etc., in the water you drink. Having a UV purifier with your water filter system eliminates any risk of waterborne disease.

What to Consider when buying a UV water purifier?

UV Light Water Filter

Before you buy a UV water purifier, make sure to check all the features that you need in your UV water purifier. You have to identify your needs first, whatever features or characteristics are more important for you. After that, choose one that meets your criteria.


Identify first what is your budget for a UV purifier and check what are the options that are available in that range. Some purifiers cost more than the others but still may not give you the result that you want.

Your needs

The biggest question is whether you need a UV purifier. Some of the filtration systems already have UV light in them. Now, if you do not already have any filter systems installed in your house and you will get a UV purifier for getting purified water, but that will not be efficient because the UV light only removes microorganisms from your water. So, it does not remove any heavy metal and chemicals from the water.

Water flow rate

There are UV filtration systems available that already have a booster pump in them. Booster pump significantly improves the water flow and makes the process of cleaning more efficient.


There are different UV purifiers available in different sizes, and you have to see what type and size of purifiers fit perfectly in your house and choose according to the available space.


Based on your budget and the cost of the actual UV light purifier, there is one thing that you have to keep in mind, that is the quality of the purifier and its performance. Before making your purchase, make sure that you are buying the most excellent quality UV purifier available in your budget.

Bulb lifespan

The different brands have different lifespans for their UV lamp, the most standard lifespan of these lamps is 6-12 months. Check the lifespan of the lamp before getting a UV purifier for your house.

Installation and Maintenance

UV Light Sanitizer

Installation of the UV water filter is very easy and quick.

First, Decide the place where you want your filter installed. The UV filter is most likely to be with other filters. You will have to choose a place where the system will fit perfectly. If you already have a system installed in your home, you can add an additional UV purifier to it. Now, if you are getting a whole system with a UV filter in it, always install your UV filter in the end.

You have to install the mounting ring where you want to set up your UV purifier. Before you set up the mounting ring, make sure you are following the instructions about whether to install the UV filters vertically or horizontally.

In the next step, you have to mount your UV lamp housing on the mounting ring you installed. Make sure that it is perfectly fitted in the wall or wherever you have installed it in a way that it won’t fall off.

If the housing is fitted perfectly, Insert the inner housing or the UV lamp into the outer housing that you mounted on the wall. You might receive O-rings that help the lamp to stay accurately fitted in the housing. There will be another rubber in-lock that is supposed to make sure if the O-rings fail, the lamp remains intact in the housing and doesn’t fall off.

Connect the water lines after making sure that your UV purifier is perfectly set up. Do not turn on your water line just yet. Connect your lamp to electricity after you have fitted the lines.

Turn on the waterline and get the water that is free from all the bacteria, viruses, and pesticides.

Maintenance of the UV water purifier is frustration-free. You might need to clean the inner housing every few weeks to ensure that the UV lamp’s light does its work. When you purchase the filter, there will be advice or duration of the UV lamp when it needs to be changed. If you clean it up and change the lamp when needed, your filter will give you the most efficiency.

If there is another water filter system before the water goes through the UV filter, you have to make sure that the filter cartridges of that system are changed in a timely period. There is a duration meter that monitors the hours the UV lamp stayed on. Usually, the duration for a UV lamp is 9000 hours. The meter shows the hours used and the hours remaining before the need of changing the filter. That way, it is easier for you to keep track of when to change the lamp.

Frequently Asked Questions (FAQs)

Q. Do I really need a UV water purifier?

Ans. It depends; if you are skeptical about there being a high amount of microorganisms in your water, you should get a UV water purifier. It’s based on preferences. However, if you already have a whole house water filter system, you should also get a UV water purifier. Even if your filter system removes 99% of the contaminants from the water, the microbes won’t be removed from the water. If you install a UV water filter/purifier, you will get water that is free from contaminants as well as viruses, germs, etc.

Q. Can turning off the UV lamp when I am not using it increase its lifespan?

Ans. Although it makes sense to turn off the UV lamp when you are not using it. If you have installed a UV filter in your vacation homes and you are wondering if it is wise to turn it off. It is actually not. If the lamp stays off for a long period of time, it is highly probable that it will malfunction.

Q. How do I know when to change the UV lamp?

Ans. The most standard UV lamps last for a year. It is highly recommended that you should get a UV filter monitor with the system so that it will indicate when you need to change the lamp.

Q. If I have a whole house water filter system, do I need a UV purifier with it?

Ans. Your whole house water filter system will remove contaminants from your water, but it will not remove micro-organisms like viruses, bacterias, waterborne parasites that are very dangerous for your health. When you install a UV purifier with your whole house water filter, you get highly purified water to consume without a doubt.

Best UV Water Purifiers of 2021 | Comparison & Reviews

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