Sawyer Squeeze review

What the Squeeze is and who it suits

At its core is a filter material Sawyer lists as a 0.1 micron absolute hollow fiber membrane. Sawyer says the filter itself weighs about 3 ounces. Sawyer sells it for hiking, camping, travel and emergency preparedness, and in a household it works as a light backup to stored and bottled water.

Kit contents differ by source. Sawyer's own page, which lists the system as model SP129CL, names two pouches, a cleaning plunger and coupling, gravity tubing, inline hydration pack adapters and a mesh storage bag. The Amazon listing describes two 32-ounce pouches, a straw, one set of hydration pack adapters and a mesh bag, and mentions tubing for a gravity setup. Check the contents on the listing you buy.

What it removes, and what it does not

Sawyer says the Squeeze removes 99.99999% of bacteria such as salmonella, cholera and E. coli, 99.9999% of protozoa such as giardia and cryptosporidium, and 100% of microplastics. Its help center lists what the filter will not remove: metals, chemicals, pesticides, VOCs, hydrocarbons and salt. It says the filter takes out taste caused by bacteria, dirt and green matter, but not iron, sulfur or other chemicals.

Viruses are not on Sawyer's removal list. Sawyer describes its filters as designed to take out pathogens such as bacteria, protozoa and cysts, so do not count on the Squeeze for water that may carry viruses, such as floodwater or sewage-affected supplies. Our guide to making water safe explains when to boil or disinfect instead, and the boil water advisory guide covers local notices.

Ways to use it

Per Sawyer, the filter works with a hydration pack through inline adapters, fits standard 28 mm threaded bottles, and can be used with a gravity bag system. The Amazon listing says the included tubing and mesh bag let you set it up as a gravity system. Sawyer says flow depends on how clean the filter is, and that altitude slows it. When you attach it to a pouch or bottle, Sawyer says to finger-tighten only, because overtightening can damage the gasket and cause a hairline crack.

Cleaning, pouches and freezing

Sawyer says to backwash before first use, when flow slows, before long storage and again after storage. Clear water may need cleaning only every 1,000 gallons and muddy water every 10, and backwashing takes only a minute. Sawyer designs its pouches to withstand up to 7 PSI before bursting and warns that most people can squeeze harder than that, so a clogged filter can burst a pouch. Pouches are not covered by the Squeeze warranty.

The freezing rule matters for a kit kept in a garage, a car or a cold house. Sawyer says a used filter should never be frozen because it never fully dries out, that there is no easy way to test for freeze damage, and that there is no warranty for a frozen filter. It also advises replacing a filter that may have been frozen, boiled, dropped on a hard surface, overtightened or bought from an unauthorized seller.

How it compares and who should skip it

On our water filter comparison it is the versatile, light pick. LifeStraw's Family gravity purifier (see its review) makes a virus claim that Sawyer does not. Skip the Squeeze if you may need to treat floodwater or sewage-affected water without boiling or disinfecting, if the kit will sit where it can freeze, or if you have no stored water yet. Start with water storage and our guide to how much water to store.

Does the Sawyer Squeeze remove viruses?

Sawyer's removal claims cover bacteria, protozoa and cysts, and microplastics. Viruses are not among them. For flood, sewage or any water that might carry viruses, boil or disinfect it as our make water safe guide describes, rather than relying on this filter alone.

Does it remove chemicals or salt?

No. Sawyer says its filters do not remove metals, chemicals, pesticides, VOCs, hydrocarbons or salt, so it will not make seawater drinkable or fix chemical contamination.

How often should I backflush it?

Sawyer says to backwash before first use, when flow slows, before prolonged storage and before using it again after storage. Clear water may allow 1,000 gallons between cleanings, muddy water as few as 10. Avoid backwashing with dirty water; if it happens, Sawyer says to run at least one gallon through and discard it.

Can I keep it in a car or garage in winter?

Sawyer says its filters withstand 32 to 140°F and that a used filter should never be frozen, because freeze damage is hard to test for and there is no warranty for a frozen filter. Keep it somewhere that stays above freezing, or close to your body in the cold, as Sawyer suggests.

How long does a Sawyer Squeeze last?

Sawyer says it does not yet know the fibers' lifetime limit, and it warrants the filter itself, not the accessories, against manufacturer defects for life. Sawyer's warranty page rates the Mini, Dual Threaded Mini and Micro Squeeze to 100,000 gallons but gives no gallon figure for the Squeeze; the up to 100,000 gallons claim for this model comes from the Amazon listing.