Sawyer Squeeze Water Filter System

The filter uses a 0.1-micron hollow fiber membrane to remove 99.99999% of all bacteria, such as salmonella, cholera, and E. coli, as well as protozoa like giardia and cryptosporidium. It also effectively filters out 100% of microplastics from your water source.

Yes, the filter features standard 28mm threading, meaning it screws directly onto most disposable plastic water bottles and many hydration bladders. This makes it incredibly versatile for different setups, whether you want to squeeze water into a bottle or drink directly from the filter.

You will notice a significant decrease in the flow rate when the filter is clogged with sediment or debris. When this happens, simply use the included syringe to backflush the filter with clean water to restore its performance.

No, the Sawyer Squeeze is designed to remove bacteria, protozoa, and microplastics, but it does not remove viruses. If you are traveling in areas where viruses are a known concern, you should use a chemical purifier or a dedicated virus-rated purifier in conjunction with this filter.

Absolutely. It is rated for up to 100,000 gallons of water, which is essentially a lifetime of use for most hikers. Because it has no moving parts and relies on a simple physical membrane, it is highly reliable in rugged backcountry conditions.

Yes, and you should be careful to prevent it. If the water inside the hollow fibers freezes, it can expand and crack the membrane, rendering the filter unsafe. In cold weather, keep the filter in an inside pocket of your jacket or inside your sleeping bag at night.