What are the best water filter and purification treatment systems used by backpackers? We asked backpackers whether they preferred squeeze-style water filters, pump water filters, gravity filter systems, chemical purification or purification using an ultraviolet light. We surveyed 1275 hikers in 2019 to ask them what water filters and treat methods they prefer. We found that 80% of them use just 10 different makes and models, which we list below, together with their average satisfaction ratings on a scale of 1-5, with 5 being the most favorable.

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