In Terms of Backcountry Water Treatment, When is Water Considered Safe to Drink?

Mar 20, 2023

Brown, silty streams, tea-colored rivulets, even clear, ice-cold lakes—any backcountry water source can serve up a cocktail of contaminants. But not everything that’s present in an undeveloped water source is necessarily harmful, and only some things pose an immediate threat to your health. In fact, it’s impractical and unnecessary to remove everything, all the time. So in terms of backcountry water treatment, when is water considered safe to drink? First, what’s commonly in backcountry water? The types of contaminants that make water “dirty” depend a lot on that source’s surrounding environment. But most contaminants can be placed into these categories: Microorganisms- Simply put: tiny bugs or germs. Microbes are the primary focus of treatment devices because of their immediate and potentially serious risk to your health. The pathogenic ones include…

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Behind the Guardian Purifier’s Technology & Design

Mar 13, 2023

MSR engineers designed the Guardian purifier to be the safest and easiest way to purify water virtually anywhere on earth. Achieving such a high degree of performance required advancements in technologies and a great deal of engineering ingenuity. After six years of R&D, with expertise provided by our in-house water research lab, the result became the world’s most advanced backcountry water treatment device. The Guardian purifier is able to transform even very challenging water sources into reliable, microbiologically safe drinking water. Here’s a look at the features and technologies built into this device. Ultimate Protection Made Simple As a water purifier, the Guardian offers greater protection than a microfilter, removing not just waterborne bacteria and protozoa, but the tiniest class of waterborne pathogens: viruses. Traditionally, eliminating the threat of viruses meant…

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MSR Employees’ Favorite Camp Recipes

Nov 22, 2022

Camp meals vary wildly from person to person. Some are ultralight backpackers who eat cold instant refried beans every night without complaint (not joking). Others, whether car camping or out in the backcountry, want the whole shebang, from a starter salad to a glass of wine and dessert. These five recipes from MSR employees lie mostly in the middle (though some definitely lean toward the backcountry feast side of the scale). We’re a pretty outdoorsy bunch here at MSR, and we’ve perfected our camp recipes over years of adventures. MSR also makes pretty spectacular backpacking and camp stoves, if we do say so ourselves, and each employee has a favorite for cooking up their camp recipes. Check out this deep dive into our stoves, from Polar explorer Eric Larsen. A…

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Why Rest Days Matter

Aug 30, 2022

The ache in my toes was subtle at first. I came off of a multi-pitch climb in California, unlaced my shoes and noticed a new tenderness in my joints. But I was rock climbing. Didn’t something always hurt while I was rock climbing? Cramming my feet into narrow blocks of rubber was just part of the process. Over the following weeks, I alternated between taking rest days and partaking in light activity to give my feet the chance to recover from their ailment. But it wasn’t long before I was back on the wall, exploring the limits of my body. Early on in my life, I learned that if you just put your head down and move forward through the pain, things usually get better. In my experience, doctor’s visits…

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What Hikers Should Know About Toxic Algae Blooms

Aug 11, 2022

You may or may not have heard of toxic algae blooms. If you have, it may have been something related to local beaches, including warnings not to swim or harvest any shellfish. But these potentially deadly occurrences affect inland fresh water as well, including sources used by hikers for drinking. In 2022, Pacific Crest Trail thru-hikers may have been sickened by toxic cyanobacterial blooms. So how can you tell if a water source has been rendered dangerous by algae? And if it has, what, if anything, can you do about it? What are Toxic Algae Blooms? Also called blue-green algae, cyanobacteria are found in salt, fresh and brackish water. These simple, plantlike organisms aren’t always toxic, but under certain conditions, including abnormally warm weather or pollution, they can grow out…

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