When you’re hiking in the wilderness, it is always a smart idea to filter or treat water from streams and lakes. Even at high elevations, there is the threat of bacteria, protozoa, and viruses that can make you sick!
Hiking 101: Water Treatment
Hiking Lady Gear Reviews: Steripen Classic, Steripen Adventurer Opti
Does the SteriPEN pre-filter keep the Nalgene threads bacteria free?
Video: How to Use a Steripen to Treat Water
I am a long-time user of the SteriPEN UV-light based treatment, due to its reliability, size, and weight. Plus, unlike pump based filters, it also kills viruses, in addition to bacteria and protozoa. A Hiking Lady reader asked about the SteriPEN pre-filter, and to demonstrate how it works I filmed this short video: