Home / Water

LifeStraw: which model fits your kit, and what it will not remove

By the Plain Prepper editors. Updated 2026-10-15.

We research products from makers' specs, manuals and safety agencies; we do not run hands-on tests. Links to Amazon may earn us a commission at no cost to you. How this works.

Quick answer

LifeStraw makes several filters that share one idea: a membrane microfilter that LifeStraw says removes 99.999999% of bacteria and 99.999% of parasites, with a 0.2 micron pore size listed for the straw and Peak Solo. The Personal straw weighs 1.6 oz and lasts up to 4,000 liters, the Go bottle adds a carbon filter for chlorine taste, the Peak Solo screws onto a standard bottle, and the Peak Gravity 8L serves a group. None of these four lists virus or chemical removal; CDC says to filter, then disinfect, when water may carry viruses.

Four LifeStraw models compared

Spec	Personal straw	Go Series 22 oz	Peak Solo	Peak Gravity 8L
How you use it	Drink through it	Bottle with filter in the lid	Straw or screw onto a bottle	Hang the bag and let it drain
Membrane life	4,000 L (1,000 gal)	4,000 L (1,000 gal)	2,000 L (500 gal)	2,000 L (500 gal)
Pore size	0.2 micron	Membrane microfilter	0.2 micron	Membrane microfilter
Carbon filter	No	Yes, 100 L (26 gal)	Optional attachment	No
Weight	1.6 oz	Not listed with these specs	1.7 oz	Not listed with these specs
Lists virus removal?	No	No	No	No

All figures are from LifeStraw's product pages, checked October 2026.

What a LifeStraw removes, and what it does not

• Removes: LifeStraw lists 99.999999% of bacteria, 99.999% of parasites such as Giardia and Cryptosporidium, and 99.999% of microplastics, dirt, sand and cloudiness for the Personal straw.
• Viruses: CDC says a filter with an absolute pore size of 0.3 micron or smaller removes bacteria and parasites, but not viruses. LifeStraw's Peak Solo page says it does not remove viruses.
• Chemicals and metals: LifeStraw says the Personal straw is designed for biological contaminants and points buyers who need chemical or lead reduction to its Home pitchers.
• Taste: only the Go Series carbon filter is listed as reducing chlorine, odors and organic chemical matter.
• Salt water: LifeStraw says the Go Series is not for desalination or removing dissolved minerals.

Filter, then disinfect, when viruses are possible

CDC calls boiling the best way to kill germs in water, and says the next best option is to filter water and then disinfect it.

1. Filter first: run the water through the LifeStraw to remove parasites, bacteria and cloudiness.
2. Disinfect: CDC says chlorine bleach, iodine or chlorine dioxide tablets kill bacteria and viruses; see our water purification tablets guide.
3. Or boil: CDC says a rolling boil for 1 minute, or 3 minutes above 6,500 feet, kills all types of germs.
4. Chemical spills: CDC warns that boiling or disinfecting cannot make water with harmful chemicals, toxins or radioactive material safe; use another source.

For virus removal in one step, LifeStraw's Family model lists a 0.02 micron ultrafilter and 99.999% virus removal; we did not find it in an Amazon search when we checked in October 2026, so it is not one of the picks.

How long a LifeStraw lasts, in plain arithmetic

• Personal straw: 4,000 liters at 2 liters of drinking water a day is 2,000 days, about five and a half years for one person; LifeStraw says over five years.
• Peak Solo or Peak Gravity: 2,000 liters at 2 liters a day is 1,000 days for one person, or 250 days for a family of four.
• Go Series carbon: 100 liters at 2 liters a day is 50 days; LifeStraw says about two months, and to replace it when taste or smell changes.
• End of life: LifeStraw says the Go Series and Peak Solo membranes stop letting water through when used up, so you are not left guessing.
• Shelf life: LifeStraw lists an unlimited shelf life for the unused Personal straw.

Which LifeStraw for which job

• Go-bag and car kit: the Personal straw is light, has no shelf life when unused, and needs no bottle or bag.
• Everyday carry and travel: the Go Series bottle filters as you sip and improves tap water taste with its carbon filter.
• Hiking and refilling bottles: the Peak Solo screws onto standard 28 mm bottle threads and lists a 3 liters per minute flow rate, so you can carry dirty water and drink on the move.
• Households, camps and RVs: the Peak Gravity 8L hangs from a tree or vehicle and fills containers for several people, and its filter can come off to use as a straw.
• Long outages at home: pair any of these with stored water; see our emergency water storage guide.

Cleaning and storing a LifeStraw

• After use: LifeStraw's storage guidance for the Personal straw is to disinfect with a bleach solution, rinse, soak in saline and store cool and dry.
• Backflush: the Peak Solo comes with a backwash syringe for cleaning the membrane.
• Bottles: LifeStraw says the Go Series bottle is dishwasher safe once the filters are removed; avoid heated dry.
• Label it: mark used filters so a used one is not stored as new in an emergency kit.
• Check your bottle threads: LifeStraw notes some bottle brands do not fit the Peak Solo.

What to look for when you buy

Questions people ask

Does a LifeStraw remove viruses?

LifeStraw does not list virus removal for the Personal straw, Go, Peak Solo or Peak Gravity; its Family model lists it. CDC says to disinfect filtered water when viruses are possible.

How long does a LifeStraw last?

LifeStraw lists 4,000 liters for the Personal straw and Go membrane and 2,000 liters for the Peak Solo and Peak Gravity.

Does a LifeStraw expire?

LifeStraw lists an unlimited shelf life for the unused Personal straw.

Can a LifeStraw filter salt water?

No; LifeStraw says the Go Series is not for desalination or dissolved minerals.

Sources

• LifeStraw Personal Water Filter Straw, LifeStraw
• LifeStraw Go Series 22 oz, LifeStraw
• LifeStraw Peak Series Solo, LifeStraw
• LifeStraw Peak Series Gravity Filter System 8L, LifeStraw
• LifeStraw Family, LifeStraw
• About Water Treatment Options When Hiking, Camping, or Traveling, Centers for Disease Control and Prevention

Sources checked 2026-10-15.