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The LifeStraw is designed for the backcountry and will filter out 99.9999% of waterborne bacteria and 99.9% of waterborne protozoa. Chemicals, salt water, heavy metals and viruses will not be removed. If you were looking for a high capacity filter to remove viruses, the LifeStraw Mission and LifeStraw Family 1.0 remove 99.999% of viruses. LifeStraw also reduces turbidity, filtering down to 0.2 microns.
The flow rate of your LifeStraw will decrease, and then stop pulling water through once it reaches the end of its life. You can increase the lifespan by cleaning the LifeStraw after each use. The great thing is, you can never drink contaminated water from a LifeStraw; when the water stops flowing through it, you know it is time for a new one!
The LifeStraw can filter up to 1,000 liters (264 gallons). This would mean, if you used the LifeStraw every day, for all of your drinking water, it will last for approximately one year. If you just use it for travel and outdoor activities, it will last much longer than 1 year. !