The LifeStraw Mission is a high-capacity gravity water filter and purifier designed for group use in outdoor adventures, emergency preparedness, and humanitarian response. Engineered for reliability in critical situations, it uses advanced membrane ultrafiltration (0.02 micron pores) to remove 99.999% of viruses, 99.999999% of bacteria, 99.999% of parasites, and 99.999% of microplastics, dirt, and cloudiness. The Mission meets or exceeds NSF/ANSI P231 standards and is independently lab tested to WHO, US EPA, and other leading protocols (see testing details).
The system includes a rugged 12-liter gravity bag, quick-connect hose, purification cartridge, and a built-in backwashing system for easy maintenance. Each filter lasts up to 18,000 liters (4,755 gallons), offering years of safe water for families or groups. Made from BPA-free, food-grade materials, the Mission is trusted by outdoor enthusiasts, preparedness households, and humanitarian organizations worldwide.
Every purchase supports LifeStraw’s Give Back program, providing a year of safe water to a child in need. LifeStraw’s commitment to scientific rigor, social impact, and real-world usability sets it apart from other water filtration brands.
What sets LifeStraw Mission apart?
Customer Feedback: The Mission is praised for its reliability, high capacity, and peace of mind in both outdoor adventures and emergency kits. Some users note a slower flow rate, which is typical for ultrafiltration systems prioritizing virus removal. Customer service is frequently cited as responsive and generous.
Editorial Recognition: LifeStraw Mission is featured in major gear roundups, such as Switchback Travel, confirming its standing among top water purification solutions.
LifeStraw products have a history of use in some of the harshest conditions around the world, from refugee camps to natural disasters to extreme back-country, our products have to work because lives depend on them. Our testing and transparency is unparalleled and we use the most trusted performance criteria based on protocols established by the World Health Organization, the US EPA, NSF International and the Water Quality Association.
Overall rating: 4.6060605 / 5 from 66 reviews.
The LifeStraw Mission provides clean and convenient water for outdoor activities or emergencies, though opinions on the filter's performance vary. It is independently lab tested, durable, and BPA free, avoiding single-use plastic bottled water.
Review topics: ["quality","packaging","water","problem","solution","use","work","lifestraw","filter","mission","bag","taste","bottle","drip","flow","chemicals","straw","system","idea","process"].
"This is my 2nd Lifestraw Mission and these are excellent purifiers. I bought my first one over 10 years ago and its probably about to meet its end. This thing will purify some nasty water. I've definitely put it to the test over the years. Great product!"
"It was slow but it worked"
"Such a peace of mind."
"I put it away in my emergency supplies in case of a major earthquake up here in the Pacific NW. I am counting on the reputation of LifeStraw that it will work as the instruction reads if/when I need to use it. Thanks. I will later review your countertop glass pitcher which I also bought."
"Got this as a gift for a friend who wanted a “go bag”. ” For emergencies. He will find great comfort in having it. ."
"I purchased this stuff for our family emergency stash, so I don't plan on using it any time soon. Have not used your products before, but have heard good things, so I guess we will see. I was a bit taken aback by the cost of the goods in Canadian dollars, and the shipping cost, but could not really find your products available with any sort of good selection in Canada, so went to you directly. But I weighed the cost of the product against the risk of not having a simple way to purify water in an emergency, so. . . ."
"Although I haven't tried the product yet, I appreciate having this for times when there may not be safe drinking water. Packaging and delivery were great. Thank you LifeStraw!"
"Bought the 12L mission in 2017, ended up losing the hose and quick clip between the bag and filter. They didn't have any replacement parts, so they sent me a whole new 12L Mission filter! Now that's some amazing customer service! I will always recommend this company!"
"Works well. Wish the flow rate was a little higher but since it’s a passive system it works for me."
"Four of us went deep into the mountains for a vacation for the last two years. We would have to make at least three to four trips a week,23 miles round trip for water. With life straw ,that ended. Worked fantastic. Keeper up with the demand and more. Thank you. Jay"
Add a donation
Add a donation to provide safe water access to communities and families most in need.