6 Best UV Water Purifiers in 2023 – Germ-Free H2O

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By Eric Phillips


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Ultraviolet, or UV for short, is a type of light that exists at the shortest wavelength end of the light spectrum. It's invisible to the human eye, but has impressive water purification properties.

If you're concerned about bacteria and other contaminants in your water, a UV water purification system could be a good solution for you. It can be used for off-grid living or for global travel, as it's portable and pocket-sized as well.

In today's world, many people are anxious about the quality of their water. A UV water purification system can provide peace of mind, as it's a simple, natural, and effective method of purification. It has received positive reviews from users.

There are many different UV water purifiers available on the market, suitable for use in homes, RVs, and even water bottles. It can be difficult to choose the best one, but we have selected some of the top options for you.

Top UV Water Purifiers of 2023

Here are the top-rated UV water purifiers of 2023.

Best of the Best
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Viqua VH410
  • Maintains flow rate of 14 GPM
  • Ideal for larger families and 3 – 5 bathroom households
  • Effectively removes a range of microbiological contaminants as well as prevalent bacterias
View on QWT →
Best Under Sink
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Express Water UV RO System
  • Generous 11-stage filtering set-up
  • 4 gallon water tank capacity
  • Top-tier price tag
View on Amazon →
Best Whole House
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Aquasana Rhino®
  • Built to last
  • Longer lifespan filters
  • Industrial design
View on Amazon →
Best Whole House (Affordable)
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  • Easy installation with a bit DIY
  • Powerful flow rate (12 GPM)
  • Premium-grade manufacturning
View on Amazon →
Best Budget
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iSpring UVF11A
  • Neat and compact unit
  • 8000 hours of light
  • Competitive price-tag
View on Amazon →
Best Travel & Hiking
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CrazyCap 2.0
  • Rechargeable through USB
  • 62,500 gallons purification capacity
  • 14-oz H2O capacity
View on Amazon →

So let’s shine a little light on the details of our top-rated UV water purifiers!

1. Viqua VH410 – Best For Whole House

The Viqua VH410 is a premium whole house UV filter that boasts convenient features, easy installation, and a high flow rate. However, it comes at a higher price point.

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  • An impressive flow rate of 14 gallons per minute
  • Whole-house system for complete purity throughout your home
  • LED indicates UV-lamp lifespan
  • Easy lamp replacement
  • Easy installation
  • High intensity bulb guarantees 40 mJ/cm2
  • Exceedingly expensive
  • Lacks the failsafe of a solenoid shut-off valve

The Viqua VH410 is a UV water purifier that is ideal for larger families and households with 3-5 bathrooms. Its flow rate is 14 GPM, making it suitable for use in a whole mansion. The filter targets a range of microbiological contaminants and common bacteria such as coliforms and E. coli, as well as viruses, cryptosporidium, and giardia.

The LED screen on the Viqua VH410 allows you to see the remaining lifespan of the UV lamp down to the day. When it's time to replace the lamp, it's a quick and easy task that doesn't require any tools. The manufacturer estimates that lamp replacement will be necessary annually.

Although the Viqua VH410 doesn't have an emergency solenoid shut-off to stop the water supply in case of failure, it does have a “lamp-on” indicator light that lets you know the filter is working effectively.

Installation of the Viqua VH410 is easy and can be done by DIYers. The device offers whole-house UV sterilization without the need for professional installation.

Bottom Line The Viqua VH410 is a premium-priced model. It may be expensive, but it offers complete purity for your household. If your household has a high demand for UV-purified water, the 14 GPM flow rate will ensure a constant supply. View Latest Price on QWT →

2. EXPRESS WATER UV RO Filtration System – Best Under Sink RO System

The EXPRESS WATER UV RO Filtration System is an under sink system that uses reverse osmosis and powerful UV filtering to provide UV filtered water from the faucet.

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  • Powerful 11-filtering
  • Leak detection and prevention
  • Remineralization stages
  • Bells and whistles go beyond UV filtering
  • Top-tier price tag

The EXPRESS WATER UV RO Filtration System is an under sink water purification system that provides instant access to purified water. It consists of 11 stages of filtration, including UV filtration, and a 4-gallon water tank. The system includes a stainless steel faucet and brass adaptors for easy installation.

In addition to UV filtering, the system also includes activated carbon, reverse osmosis, and several remineralization and alkaline-adding stages. However, the system's 11-stage filtering may be overkill if you're only looking for a UV filter. The filters also need to be replaced every six months or so, which is an added cost.

The EXPRESS WATER UV RO Filtration System is a high-quality unit with a high price tag. Make sure you're concerned about every contaminant it targets to ensure you're getting the best value for your money.

Bottom Line The EXPRESS WATER UV RO Filtration System is a high-quality under sink system that is worth the price. It's an excellent choice for UV filtering and much more. View Latest Price on Amazon →

3. Aquasana EQ-1000-AST-UV – Best for Well Water

Off-grid living offers a sense of freedom. However, bacteria can also thrive in these conditions. The Aquasana EQ-1000-AST-UV well water UV purifier can provide reassurance about the quality of your drinking water.

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  • Long filter lifespan
  • 5-year warranty
  • Industrial appearance
  • Costly additional features that really should be included for the price

The Aquasana EQ-1000-AST-UV system isn't inexpensive. However, if you've built your own home and draw your own water from a well, it should be within your budget. The system is built to last and the tanks are made with food-grade material to prevent contaminants from entering the water. Despite its size, the heavy-duty filters are lightweight for easier maintenance and filter changes.

At almost 5 feet tall, the Aquasana EQ-1000-AST-UV is a large unit. Consider where you'll place it. It may not be aesthetically pleasing in a stylish kitchen, but it could work in a garage or on the exterior of your home. Installation requires plumbing and piping. The gravity-fed system does not require electricity, but you may want to hire professionals for the installation. Aquasana charges extra for the Pro-Grade installation kit, which may seem steep given the base unit price.

In addition to UV filtering to remove bacteria and cysts, the carbon-activated stage removes chlorine and other contaminants such as herbicides and pesticides that may have entered the water from local farm runoff.

Bottom Line The Aquasana EQ-1000-AST-UV is a high-quality product for those living off the grid. Its price and installation may be intimidating, but it's necessary for those who rely on well water. View Latest Price on Amazon →

4. HQUA-OWS-124 UV Water Purifier for Whole House – Best Whole House

HQUA-OWS-124 is a UV filtering system for your whole house. It has long-lasting filters, is made with premium materials, and is easy to install. Let's take a closer look at this.

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  • Powerful flow rate (12 GPM) and continuous filtering
  • Stylish tubing
  • Premium-grade materials
  • Requires mains power
  • Filter replacement and maintenance is a drag

The HQUA-OWS-124 is a stainless steel water purifier that has a sleek and stylish design. It's suitable for both residential and commercial settings. The 37.5” chamber contains a long UV lamp that purifies the water as it flows through. The UV lamp is protected by a quartz glass safety chamber, which is a premium material.

Installation of the HQUA-OWS-124 is easy for those with some DIY experience, but it does require plumbing and power supply to be nearby. The purifier only uses UV for filtering and has a high flow rate of 12 gallons per minute, which is enough for five showers at once.

While the HQUA-OWS-124 is a high-quality product, it does require some maintenance. The UV filter should be replaced annually and the quartz glass framework should be cleaned every six months to maintain optimal purification.

Bottom Line HQUA-OWS-124 is a UV purification system for your entire home. It has a high flow rate. However, it requires regular maintenance. View Latest Price on Amazon →

5. iSpring UVF11A UV Ultraviolet Light Water Purifier – Best On A Budget

UV purification at home shouldn't be reserved for the elite. The iSpring UVF11A has built a compact and functional filter that is budget-friendly for anyone.

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  • Compact and affordable
  • Compatibility with reverse osmosis add-ons
  • Flow sensor switch preserves the bulb’s lifespan
  • Flow rate of 1 GPM will function under one faucet, just
  • UV only – pay more for additional stages of filtering

The iSpring UVF11A is a compact unit designed for under sink use. It features a Philips UV lamp housed in a watertight stainless steel chamber, making it a reliable choice for long-term use. The installation kit includes everything you need, including housing and wall-mounting brackets. It can be easily installed by those handy with DIY, but keep in mind that it requires a power outlet within reach of the under sink cabinets as the UV bulb is mains powered while the unit is plumbed into your home water supply.

The iSpring UVF11A also includes a flow sensor switch that turns on the UV light when it detects water flowing into the unit. This ensures that the bulb is only in use when needed, conserving its lifespan. With an estimated 8,000 hours of light and purification, this unit is a long-lasting choice for purifying your tap water.

While it is UV purification only, the iSpring UVF11A is compatible with additional filter stages such as osmosis for more thorough purification. However, these add-ons can be expensive and may not provide the best value for money. If UV purification is your primary need, the iSpring UVF11A is a great option. It's made with reputable electronics and robust materials, ensuring it will provide reliable purification for years to come.

Bottom Line iSpring UVF11A is a long-lasting UV filter that is competitively priced. It's the best UV water purifier for those on a budget. View Latest Price on Amazon →

6. CrazyCap Insultated Water Bottle – Best Travel & Hiking

Here is a pocket-sized water purification option: the CrazyCap Insulated Water Bottle. It has in-built UV purification for fresh water on the go.

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  • Great price
  • Self-cleaning means no maintenance!
  • Functions as a flask
  • Lifetime warranty
  • 14oz capacity means multiple refills
  • Limited filtering functionality – just UV

The CrazyCap Insulated Water Bottle is a convenient and practical option for everyday use. Its double-walled vacuum insulation and stainless steel outer chamber provide durability, although it may take a few dents from hard use. The UV light in the cap is powered by a compact battery that can be recharged through USB. The battery life should last up to seven days, which is sufficient for an extended camping trip but may need to be kept in mind for longer adventures.

In addition to purifying water, the bottle also has the ability to keep warm beverages heated for up to 12 hours. The UV bulb is capable of purifying a lifetime's worth of water, at 62,500 gallons. However, the bottle has a 14oz capacity, so you may need to refill it frequently to stay hydrated throughout the day.

Bottom Line CrazyCap Insulated Water Bottle is a great value for money. The filter has a long lifespan and the product comes with a lifetime warranty. View Latest Price on Amazon →

Discover the Top UV Water Purifiers for Your Needs: A Buyer's Guide

UV water purification is a useful method for both outdoor adventures and purifying water in your home. Here is some information to consider before purchasing a UV water purifier.

How Do UV Water Purifiers Work?

Can light alone really purify water? The answer is yes. UV light, specifically, can purify water.

UV stands for ultraviolet and refers to light at a specific wavelength. While some of the light from the sun is UV, it is not enough to effectively target and kill germs. However, when UV light is concentrated, it can effectively break up the DNA of microbes and bacteria, causing them to die off.

So, if you're used to using fancy filters with techniques such as reverse osmosis or carbon activation, know that UV light can also effectively purify your water. Let there be light!

The Benefits of UV Water Filtration

UV can be effective in purifying water. Do you need it for your home or hiking kit? Here are the reasons why UV is important in any setting.

Hospital Approved

UV light is effective at disinfecting surfaces and killing bacteria. It's often used in hospitals and surgical settings.

Industrial bulbs are used to purify large spaces in hospitals. Smaller bulbs can also be used to purify water in the home. UV purifying water bottles have removable caps that can be used to disinfect surfaces in the home.

A Longer Lifespan

UV water purifiers need to be replaced frequently, usually every six months or more if the water quality is poor. UV bulbs, on the other hand, are more durable and last longer. They don't burn out like standard lamps but they do become less intense over time and lose effectiveness in purifying water.

Most UV bulbs have a lifespan of around 9000 hours, which is approximately 375 days if they are in constant use. Filters with smart sensors that turn off when not in use will last even longer.

Small water bottle filters may never need to have their bulb changed, regardless of how much pure water is consumed. It's recommended to check the manufacturer's recommendations, but most bulbs should last around 12 months. Smaller bulbs, such as those found in UV-utilizing water bottles, can last even longer, potentially for decades.

Reducing Plastic Waste

We must all take action to help save the planet. Being aware of your plastic consumption and waste, known as your plastic footprint, is a crucial step in reducing our environmental impact.

Using a UV water bottle instead of buying bottled water can prevent 500,000 water bottles from ending up in landfills. This helps to reduce a large amount of plastic waste. Additionally, knowing that you're making a positive impact on the environment can make every sip of water taste even better.

Energy Efficiency

UV lamps are energy efficient and require little power. They emit powerful light, but use the same energy as a 60-watt bulb. This makes them eco-friendly and a cost-effective filtering choice.

No Harmful Chemicals

UV water purifiers purify water using light, instead of using harmful chemicals like some other water purifiers. This means that no chemicals come into contact with the drinking water during the purification process. The process is natural and leaves the water perfectly purified.

The Limitations Of UV Purification

UV water purifiers target microbiological contaminants like bacteria and parasites, which are destroyed by high-powered UV beams. These contaminants can be a concern in drinking water for campers and those living off-grid.

However, if you're drinking from a mains water supply, you may also be concerned about other contaminants such as herbicides and heavy metals. UV purification isn't a complete solution for all water contaminants and additional filters may be needed for added protection. That is why UV purifiers are often added as an additional stage filter in some multi-stage whole house and well water filtration systems.

Can UV Light Be Dangerous?

UV rays that can disintegrate DNA may sound appealing, but they are also essential for all life. You may be wondering if UV can be harmful and if it is safe to use in your home.

We are all aware of the damage that the sun's rays can cause to our skin, such as wrinkles and skin cancers.

While there are valid concerns about UV rays, especially when we're in direct sunlight, UV filters are completely safe. They are sealed in stainless steel tubing that amplifies the effect of UV on your water and keeps it contained.

If you've a UV purification water bottle, the light may be contained in the cap. It's important to not look directly into the bulb, but this is also true for any torch.

UV filters are safe as long as they are assembled correctly. It is the microbes that need to be cautious.

Factors You Should Consider For Buying the Right UV Water Filter

When purchasing your first UV water purifier, there are a few things to consider. Here are some things to watch out for:

Your UV Needs

The UV water purifier you're taking on your travels will differ from one that can purify water for your entire house. Determine your UV needs before shopping for a UV water purifier.

When considering whole-house filtering, consider both the volume of water needed and the flow rate required. Flow rates range from 9 GPM to 15. Opting for a higher flow rate allows multiple family members to shower simultaneously, avoiding conflicts.


Your UV water purifier should be durable and long-lasting if it's built with the right components such as a stainless steel chassis and quartz glass protective chambers. However, things can still go wrong.

Some UV water purifier manufacturers offer life-long warranties and good customer service, while others offer minimal warranties to save costs. It's up to you to decide which option is best for you, but a longer warranty may give you more peace of mind.

Keep in mind that different components may have separate warranties. It's common for the system to have a warranty lasting several years, while the UV bulbs included in the unit may only be under warranty for six months.”

Power Source

UV water purifiers require a power source, such as an electrical outlet or battery, to function properly. It's important to consider the power source when purchasing a UV water purifier, especially if it's a high-powered model. Make sure you have access to a power source during installation to avoid any issues.


Understanding the maintenance requirements of your UV purifier can help you choose the right system for your home. Are you the kind of person who cleans their car every sunny Sunday, or do you have a long to-do list that could rival Tolkein's?

UV water bottles are self-cleaning, while whole-house units with quartz sleeves may need to be removed and scrubbed twice a year to ensure the effectiveness of the filter system.


UV water purification is a powerful and effective method for cleansing water. It utilizes something simple and natural – the sun's rays – to purify water.

Ecologists believe that water is the source of all life on our planet. The sun's rays are also essential for life. They help plants grow and provide us with vitamin D.

By using this technology for water purification, we can strengthen our connection to the natural world. UV water purification can be used for off-grid living, hiking, and travel. It can help us live our dreams and bring light into our lives.

Eric Phillips

Meet Eric, the Water Treatment Specialist and founder of Dripfina, where he shares his wealth of expertise. With notable features in Realtor, ApartmentTherapy, FamilyHandyMan, and more, Eric is a renowned expert in water treatment industry. Join Eric on Dripfina and benefit from #AskDripfina community to make informed decisions for clean, refreshing water.

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