The Best Backpacking Water Filters of 2025

A bacteria-filled beach. A muddy wetland. Glacial silt runoff. The best backpacking water filters have to be able to handle some pretty gnarly water sources without clogging or breaking. I tested the 20 backpacking water filters in this story by taking them to three different water locations, pumping three liters of water through each filter. After each round, I timed how long it took each filter to handle a liter of tap water before continuing to the next round. At the end of all three rounds, I weighed each filter.

Continue reading to learn more, written by Laura Lancaster.

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April 19, 2025

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The Sawyer Mini can filter up to 100,000 gallons—yep, you read that right—and fits in the palm of your hand.

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A favorite of ultralight hikers, backpackers, bikers, and travelers, the Sawyer Squeeze filter is the gold standard in water filters for anyone concerned about weight and universal compatibility.

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This popular repellent from Sawyer has 20% Picaridin, which protects against a wide range of insects, including mosquitoes, ticks, biting flies, gnats, chiggers and sand flies.

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