Looking for fast, light, and chemical-free outdoor water purification method? SteriPEN handheld UV water purifiers quickly and easily make safe water available when hiking, camping, biking … any kind of outdoor activities. Using the power of UV light water purification, SteriPEN outdoor models destroy over 99.9% of microorganisms in water that can make you sick making. The experienced adventurer’s preferred choice for hydration.


Purifying water for hiking, camping, and outdoor adventures since 2001!
Thousands of outdoor enthusiasts all over the world have trusted SteriPEN for outdoor use. SteriPEN’s patented UV water purification technology was first introduced to hikers and campers at REI in 2001.  Easy to use – just remove the cap, activate, place the lamp in clear water, and stir. SteriPEN Outdoor models purify up to one liter of water in 90 seconds and last for 8,000 treatments.

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SteriPEN Testimonials View All Testimonials

John Mathe
 It gives me drinkable water in under two minutes, I can use it on the move, and it fits anywhere!
John Mathe Author - In the Footsteps of Greatness
Don Fletcher
In a survival situation clean drinking water is one of the main priorities, and the Adventurer Opti is great to ensure that what you are drinking is safe.
Don Fletcher Bear Grylls Survival Academy
No chemicals. Charge the battery before using and it’s good to go!
Donna Blogger - Chasing Clean Air



SteriPEN Awards View All SteriPEN Awards

SteriPEN consistently receives industry awards recognizing the effectiveness and convenience of handheld UV water purification.
 Time Magazine Award 

Outside Magazine