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How My Sawyer Squeeze Filter Performed on My JMT Thru-Hike

I tested a brand new Sawyer Squeeze on my 17 day thru-hike of the 211 mile John Muir Trail (250 actual miles). The filter was not backwashed during the entire trip.

Paul Bodnar       Tech on the Trail       09/07/2021
Paul Bodnar
Tech on the Trail
09/07/2021

Filtration Flow Rate

After 17 days of use without backwashing the Sawyer Squeeze, the flow rate dropped from 1.60 liters per minute to 1.45 liters per minute. After backwashing with just 2 liters of clean water using the Sawyer backwashing coupler, the Sawyer Squeeze flow rate was almost completely restored to its new condition (1.59 liters per minute).

Sawyer Squeeze Flow Rate chart

Conclusions

So what did I learn?

  • The Sawyer Squeeze maintained a good flow rate after 17 days of constant use (1.45 liters per minute).
  • The Sawyer Squeeze flow rate decreased about 0.6% per day over the 17 days of use.
  • Backwashing the Sawyer Squeeze restored the flow rate to 99.4% (1.59 liters per minute) of the original flow.
Review: Sawyer Mini, Micro and Squeeze Compared

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Showers Lake Vista, Tahoe Rim Trail
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Photo courtesy of the Tahoe Rim Trail Association

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About the Author
A man wearing an Arizona Trail baseball cap stands in a field in front of a mountain.

Paul Bodnar

Paul has always liked hiking and thru-hiked the Pacific Crest Trail in 1997 after college. After years of working in chemistry, he wanted to create a career involving the outdoors, so he hiked the Pacific Crest Trail again in 2010 to do research for his guide book Pocket PCT. He realized that creating a smartphone app for navigating the outdoors would make it easier to keep the data current and provide a better way to navigate. While hiking with Ryan (aka Guthook) in 2010, they decided to work together to create the first comprehensive smartphone guide for the Pacific Crest Trail. Now with the help of a team of great people they have created over 40 guides for trails around the world.