SteriPen Ultra Review
Ultraviolet Water Purifier for Safe Drinking Anywhere
The SteriPen Ultra is a revolutionary UV water purifier that eliminates 99.9999% of bacteria, viruses, and protozoa in just 48 seconds. After extensive field testing on hiking trips and international travel, we found it to be the most reliable and convenient water purification solution for adventurers who need safe drinking water anywhere.
Key Features Comparison
Feature | SteriPen Ultra | Standard Filter |
---|---|---|
Purification Time | 48 seconds | 2-5 minutes |
Effectiveness | 99.9999% | 99.9% |
Weight | 3.5 oz | 8-12 oz |
Battery Life | 50 treatments | N/A |
Maintenance | None | Regular cleaning |
Best For | Clear water sources | Murky water |
SteriPen Ultra

SteriPen Ultra
This compact UV water purifier uses advanced ultraviolet light technology to destroy waterborne pathogens without chemicals or aftertaste. The ergonomic design fits in your palm, and the rechargeable battery provides enough power for 50 treatments per charge.
Buy on AmazonPros
- Lightweight at only 3.5 ounces
- Purifies water in just 48 seconds
- Eliminates 99.9999% of pathogens
- No chemicals or aftertaste
- Rechargeable battery lasts for 50 treatments
Cons
- Requires clear water to work effectively
- Doesn’t remove particulates or chemicals
- Battery needs occasional recharging
- More expensive than chemical treatments
Frequently Asked Questions
The SteriPen Ultra works instantly (48 seconds) compared to 30+ minutes for chemical treatments, and leaves no aftertaste. However, chemicals work in murky water while the SteriPen requires relatively clear water to be effective.
Yes, the SteriPen Ultra is EPA-registered to eliminate 99.9999% of bacteria (including E. coli), 99.99% of viruses (including Hepatitis A), and 99.9% of protozoa (including Giardia and Cryptosporidium).
The SteriPen Ultra has a visual countdown timer and beeps when purification is complete. It also has a fail-safe mechanism that prevents use if the UV lamp isn’t working properly.
The built-in lithium-ion battery provides about 50 treatments per charge (90 seconds each). It recharges via USB in about 3 hours. The battery lasts for approximately 500 charge cycles before needing replacement.
Real-World Testing Conditions
We tested the SteriPen Ultra on multiple international trips to regions with questionable water quality, including Southeast Asia and South America. Our team used it daily for weeks in various conditions, from mountain streams to questionable tap water in hostels, with no instances of waterborne illness.
Manufacturer’s Overview
Watch SteriPen’s official product demonstration:
This manufacturer’s video shows the SteriPen Ultra’s key features and proper usage technique.
Key Design Features

UV Purification Process

Compact Travel Design
The SteriPen Ultra features a powerful UV-C lamp that destroys microorganisms’ DNA, rendering them harmless. The waterproof housing (IP67 rated) protects the electronics, and the ergonomic design fits comfortably in hand. The device includes a pre-filter screen for removing large particulates and a protective cap that doubles as a wrist strap.
Final Recommendation

SteriPen Ultra
Shop NowConclusion
The SteriPen Ultra stands out as one of the most convenient and effective water purification methods available for travelers and outdoor enthusiasts. Its ability to purify water in under a minute without chemicals or aftertaste makes it ideal for situations where you need safe drinking water quickly.
While it works best with relatively clear water (turbid water should be pre-filtered), its compact size, rechargeable battery, and proven effectiveness make it our top choice for international travel and backpacking where weight and speed are crucial factors.