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Top 5 Best UV Bottle Purifiers in 2021

by FrankJun 27th, 20219 mins read

We have recently begun to understand the need for sterilizing devices to kill any germs in our environment and stay safe from the spread of infectious diseases.

That’s why you need to think about getting yourself a bottle with a UV-C purifier to keep your drinking water clean at home and outdoor areas. UV-C bottles are quick at purifying water, whether from your tap, a pond, or other questionable sources. Besides, they are self-cleaning, which means you don’t have to worry about soaps and chemicals.

Furthermore, UV-C bottles are easy on the environment, unlike disposable plastic bottles that are detrimental to our ecosystem. You can use a UV-C bottle again and again while reducing your waste footprint. They are an excellent acquisition for traveling and camping because most are rechargeable and the battery can last for weeks.

Do you need a UV light water bottle to have clean water at all times? Read this article as we discuss the 5 best water UV purifier bottles in the market, depending on your needs.

Table of Contents

Top 5 Best UV Bottle Purifiers

Best Versatile UV Bottle Sterilizer: CrazyCap UV Water Purifier Bottle

CrazyCap UV Water Purifier Bottle

CrazyCap UV Water Purifier Bottle

Turns Any Water Source Into Clean Drinkable Water

REPLACES 500,000 WATER BOTTLES - Reduces plastic waste and needless spend of bottled water. Premium bottle made of vacuum insulated stainless steel keeps water cold for 24 hrs / hot for 12.

Are you looking for a self-cleaning bottle that can sterilize more than just water? This one from CrazyCap is more stylish and comes with features like insulation and a versatile cap. It emits UV light that effectively eliminates 99.999% of bacteria, molds, and viruses with UV light exposure. The sterilizing cap can be used to sterilize surfaces, featuring a quartz lens and a built-in LED.

It sports a powerful lithium-ion battery that can hold a charge for up to 4 weeks on normal use and recharges in a few hours. This is an excellent option for camping and hiking trips as it can use a solar charger where power isn't readily available. It’s also available in a variety of colors and designs so you can choose what you like.

What is more impressive with this smart bottle is the self-cleaning technology that automatically turns on after every four hours. You can still turn on the process manually through the touchpad by tapping twice for the one-minute purification process. Tapping five times enables the "crazy" mode that takes two minutes for thorough purification, especially when the water source is not so safe.

It has a large capacity of 17 ounces (500 ml) with a stainless steel vacuum-insulated design that keeps liquids hot for up to 12 hours or ice-cold for 24 hours. The cap is 34 millimeters wide with a universal screw top to fit in other bottles with a similar neck. This is a great feature that lets you purify water in bottles other than the CrazyCap bottle.


  • It eliminates up to 99.999% of impurities
  • The cap can double as a sanitizer wand to sterilize objects too
  • Made of a convenient insulated stainless steel
  • Offers a quick sterilization time


  • 17 ounces capacity may not be enough for survival purposes

Suggested Review: The CrazyCap 2.0 UV Water Purifier Review

Best UV Bottle Sterilizer For Office: LARQ Self-cleaning water bottle

LARQ Self-cleaning water bottle

LARQ Self-cleaning water bottle

Self-Cleaning and Stainless Steel Water Bottle

ERADICATES BACTERIA FOR YOUR PEACE OF MIND – using innovative non-toxic mercury-free UV-C LED technology to purify water and clean the inner surfaces of the bottle by eliminating odor-causing bacteria and viruses

The LARQ water bottle is a self-cleaning bottle that uses UV light every 2 hours to sterilize any bacteria and viruses in your drinking water. It features a double-walled construction that’s sturdy enough to withstand any impacts from accidental drops to last long. The thick material construction also does a good job in maintaining the temperature should you want to keep your drink hot or cold.

With a volume of 17 ounces, the LARQ bottle is on the smaller end, but that’s fine in situations where accessing water isn’t difficult. The bottle uses a proprietary UV-C LED cleaning mechanism that kills up to 99.999% of microbes, such as E. Coli and herpes simplex.

The cleaning cycle takes about 60 seconds in the normal mode, while the adventure mode takes 120 seconds. The latter mode has three times the UV light dosage to clean water thoroughly, specifically from questionable sources. It’s rechargeable via a USB and can last up to 2 months on a full charge, which is impressive for hikers and campers.


  • Made of sturdy stainless steel
  • Effective at killing microorganisms
  • Offers great color options
  • Has a fast cleaning cycle


  • It’s relatively heavy

Best UV Bottle Sterilizer For Outdoor: UVBrite Explorer Self-Cleaning 20.3 Oz Rechargeable Bottle

UVBrite Explorer Self-Cleaning 20.3 Oz Rechargeable Bottle

UVBrite Explorer Self-Cleaning 20.3 Oz Rechargeable Bottle

20.3 Oz Insulated Stainless Steel Rechargeable Reusable Bottle Automatic Purification Every 6 Hours BPA Free Leak-proof Safety Lock and Touch Sensor

Safety Lock: Unlike other UV Water-Purifying Bottles on the market, UVBrite is equipped with a safety lock to prevent accidental exposure to UV-C light. Once the cap is removed, the UV-C light cannot be activated.

Drinking clean water is mandatory to ensure a healthy life, and making sure that water ingested into your body is safe requires sufficient purification. Introducing UVBrite Self-cleaning UV bottle that does all the hard work for you. This water bottle is constructed with a top-grade quartz lens built with an LED lens that disinfects and purifies water thanks to the special spectrum of light it emits.

As opposed to filters, the UV-C disinfection technology allows the UVBrite Self-cleaning Explorer to destroy all water-polluting organisms, be it molds, bacteria, microorganisms, viruses, or pathogens, up to 99.99% to enhance a healthy life.

Featuring a self-cleaning function that is intelligently designed to automatically switch on after every 6 hours, your water bottle is persistently purified to enhance safety and overall health. It only takes a single touch of a button to make clean water close to hand.


  • Self-cleaning after every 6 hours ensures continuous disinfection
  • UV-C technology allows the purification of water microbes by up to 99.99%
  • Constructed with sturdy food-grade steel to make it long-lasting
  • It comes with a safety lock to ensure UV light does not penetrate your water
  • It is convenient for outdoor activities


  • 20oz. capacity does not fully serve user needs

Best UV Bottle Sterilizer For Value: Uvilizer UV Sanitizer and Ultraviolet Sterilizer

Uvilizer UV Sanitizer and Ultraviolet Sterilizer

Uvilizer UV Sanitizer and Ultraviolet Sterilizer

Self-Cleaning Purifier, Durable Stainless Steel

QUICK AND EFFECTIVE STERILIZATION --- Utilizing the same UV light technology used to sanitize operating rooms and water treatment plants, the UVILIZER Pure is the best solution to chemical-free purification of your personal water bottle.

If you're looking for both functionality and price efficiency in a sterilizer, this is it. The Uvilizer is quick and effective and falls under the affordable category. It uses the same UV technology as that used in water treatment plants to destroy viruses and other microbes. With the eco-friendly Uvilizer Pure, your water stays mold-free and odorless at all times.

Besides, the bottle is self-cleaning, so it destroys any germs or mold in your water bottle. It's powered by UV-c technology and a disinfection light that keeps your water purified without chemicals or odors. Just a shine of the UV light can sterilize your drink and surfaces around you to keep you protected on the go.

The manufacturer designs the bottle with a 304 high-grade stainless steel and double-walled construction to keep your drink at the desired temperature for hours. It's an excellent option for carrying hot coffee or cold water for travel.

The US-based company provides a hassle-free replacement product warranty in case of defects. You also get lifetime customer services and many other benefits.


  • It uses effective sterilization for viruses, bacteria, and mold
  • It's self-cleaning
  • It has a durable build
  • The cap doubles up as a sterilizer


  • Has a smaller capacity

Best UV Bottle Sterilizer For multi-purpose: Philips Water GoZero Smart Water Bottle

Philips Water GoZero Smart Water Bottle

Philips Water GoZero Smart Water Bottle

Smart Water Bottle Vacuum Insulated Stainless Steel Drink Bottle, BPA Free

Keep It Cool (or Hot): Thanks to its double-walled vacuum insulated stainless-steel body, your drinks will stay hot for up to 12 hours or cold for up to 24 hours.

The Philips GoZero is a 20-ounce hydration bottle with a self-sterilizing cap containing a UV-c light inside that sterilizes water every time. The manufacturer claims that it prevents smelly bacteria from build-up and eliminates 99.999% of pathogens. Besides, the bottle turns dirty water from different water sources into a drinkable state.

The bottle is double-walled with a sleek, modern design that will keep your drink at the desired temperature and fit in your backpack. Your drink stays hot or cold for up to 24 hours. The plastic cap lights up different colors during the purification cycle, during charging, and when the battery is low. Using the bottle is easy because you just press the start button on top, and the purification cycle starts and lasts for 3 minutes.

The charging process involved a charger that connects to a magnetic top that lasts for over 30 days. However, many customers say they prefer a micro-USB or even type C to the magnetic charging cable attached. It's not possible to charge the cap in your backpack.


  • It comes from a reputable brand
  • Keeps water clean
  • The bright light looks fancy
  • Has an excellent build


  • A few customers prefer USB charging to the magnetic charging cable used

Best Value For Money: GRAYL Ultralight Purifier Bottle

GRAYL Ultralight Purifier Bottle

GRAYL Ultralight Purifier Bottle

Purifier + Filter

FILTERS particulates (e.g. sediment, silt), many chemicals (e.g. chlorine, benzene) and heavy metals (e.g. lead, arsenic); zero aftertaste, eliminates bad odors, improves clarity and flavor

If you need a water purifier bottle that takes little space in your backpack, the GRAYL Ultralight is ideal for you. It weighs only 10.9 ounces and is dimensionally slim enough to fit in the pocket. It comes with a purifying cartridge at the bottom that makes it effective at filtering out sediment.

It uses electro-adhesion and ION exchange to remove about any virus, protozoa, and bacteria inside the water to make water safe, hence the name “The Holy Grayl.”

It features an easy-to-use one-press system where you simply scoop some water, press the top, and hydrate. The bottle removes a majority of water pollutants, including microbes, particulates, heavy metals, and chemicals. Besides, it removes terrible tastes using the activated carbon filter.

The high-quality build makes it reliable for a long time, with the only replacement needed being the filter but still works long enough. You don't have to worry about replacing UV bulbs and batteries, which cuts down costs.


  • Removes 99.9999% of water pollutants
  • Easy to use and compact
  • Reasonably priced


  • The filter needs replacement after some time

Out of Stock - Best portable UV Bottle Purifier: Uniharpa UV-C Water purifier Bottle

Uniharpa UV-C Water purifier Bottle

Uniharpa UV-C Water purifier Bottle

Water Purification - Safely Drink Water from Tap,Streams,International Travel-Includes Premium CC Stainless Steel Insulated Tumbler 12oz(White)

Rechargeable: USB rechargeable Li-polymer battery gives you self-cleaning power.It lasts a whopping 400,000 water treatments - Plus, it Goes a Full Week on One Charge!

Using UV-C light at 295nm, this self-cleaning water bottle is ideal for breaking DNA and nucleic acid chains on the bottle and inside the water. The non-toxic UV technology is effective at eliminating viruses and odor-causing bacteria such as Salmonella and E Coli.

The bottle features a wide mouth that makes it refilling the bottle a breeze with less spilling of water. It’s one of the best UV water purifier bottles with a leak-proof design, meaning you can pack it without worrying about leakages. Besides, it features a sturdy ring that lets you tie your backpack on the strap when going outdoors.

The Uniharpa water bottle can keep cold water cold for 24 hours and hot water hot for 12 hours, thanks to its sturdy stainless steel that keeps temperatures constant. It’s ideal for camping and hiking and most outdoor activities.


  • Made of a sturdy stainless steel
  • It has a leak-proof design
  • It’s lightweight and portable
  • Comes with a carrying ring


  • It has small capacity

Out of Stock - Best UV Bottle for Hiking: Elio Water UV Self-Cleaning Water Bottle

Elio Water UV Self-Cleaning Water Bottle

Elio Water UV Self-Cleaning Water Bottle

USB Rechargeable 500ml

REUSABLE & ECO-FRIENDLY - This self-cleaning bottle represents technology that could make plastic bottles obsolete. The bottle is dishwasher safe; hand clean the lid so as not to harm the cap

You don’t have to deal with a stinky bottle ever again with this self-cleaning bottle from Elio Water. It is perfect for offices, gym, faucets, and mountain biking. It's effective for purifying water, thanks to the medical-grade UV light in the cap that kills nearly 100% of germs and odor-causing bacteria present in water.

It’s simple to turn on the UV-C light by clicking the power button at the top that starts the 90-second purification cycle. The bottle has a unique safety feature where the UV light only works when the cap is screwed on. In case the cap is removed, and you accidentally or intentionally press the power button, the UV light does not turn on to protect you from exposure to the potentially damaging light.

The self-cleaning bottle is rechargeable via a USB cable that comes included, which means you can charge it anywhere, such as car, plane, home, office, etc. The LCD screen on the top is also convenient as it shows the temperature if the liquid inside the bottle, the battery remaining, and the timer when sterilizing.


  • Affordable price
  • The bottle is compact and lightweight
  • It’s dishwasher safe
  • Offers maximum prevention to UV exposure


  • The battery is relatively less lasting


There are so many reliable UV-C water bottles to get in 2020 and you can be sure to find something that meets your personal preferences. Depending on your activity, you may decide to get a variety of different situations. Go ahead and improve your health, save money, and protect the future of the planet with one of these choices.


Why do you need to use a UV bottle purifier?

There are various reasons why a UV bottle purifier is essential. For one, it destroys bacteria, viruses, and mold that cause odor and illnesses. As such, you can be assured of clean drinking water that’s safe from waterborne diseases. They are also reusable, which means you won't need to damp after use, hence eco-friendly. Lastly, they have been designed to last long, so you save money in the long run.

How do you use a UV bottle purifier?

For most UV-C purifier bottles, the cap emits a wavelength of radiation to deactivate any living organisms in the water. Therefore, you start by filling the bottle with your liquid, screw the lid, and tap the power button (usually located at the top of the cap). Thus starts the purification process for about 60-120 seconds for most bottles.

Is a UV bottle purifier safe to use?

UV water treatment is safe. Although UV-C light is harmful to humans, it does not alter the composition of water. Unless you look at the light when it’s on, UV light bottles are safe to use. Besides, most caps do not work when they are not screwed even if you accidentally pressed the button.

How long does a UV bottle purifier take to sterilize water?

UV light bottles differ when it comes to purification processes depending on the source of water. It takes more time to clean water from questionable sources like lakes than it takes to clean regular tap water. Most of them will have two cycles: the normal cycle to clean regular water and the secondary cycle to purify dirtier water. The cycles range between 60 to 120 seconds, depending on the source.

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