Water bottle filters and other water filter brands
Water bottle filters and other water filter brands

For most people, water treatment is a must-have on backpacking trips. Heck, even a long day of hiking can require a filter, if you don't want to carry liters of water. It can also sometimes be a good idea to treat water while traveling, or even in the course of daily life at home.

Before the comments section implodes, we’d like to include the caveat that this article covers the filters we were sent to test. We reached out to several brands that did not respond to our inquiries, including MSR, LifeStraw, Steripen and Katadyn.

We are aware these filters are out there and have used them, but they are not included here because we didn’t test them. We’d like to note that the Katadyn BeFree is a popular alternative to the ubiquitous Sawyer Squeeze, with a fast flow rate, low weight, and super flexible bag.

Hikers can also use purifying treatments like Aquamira drops, iodine, or even bleach (repackaged into an eye dropper).

Here are the water filters tested for this article, with info on how they work and who they might be best for, written by Maggie Slepian.

Majina ya Vyombo vya Habari

Why use a plastic bag when you can simply screw on this end cap, specifically designed for Sawyer water filters?

Mlango wa Zoe
Editor at Backpacker

Majina ya Vyombo vya Habari

In future, I’ll use gravity when I can, and squeeze when I have to.

Richard, aka "LowRange
Hiker

Majina ya Vyombo vya Habari

For longer hikes, it’s convenient to carry a small backcountry water filter, such as a Sawyer Mini or Micro, which allows you to replenish your water from natural sources like streams or ponds.

Philip Werner
Author and Backpacker