LifeStraw Mission High-Volume Gravity-Fed Water Purifier Review

I’ve reviewed a few handy, compact water filters that are perfect in your backpack and for helping in emergencies.

But if you want to filter for a group of people you need something like the LifeStraw Mission High-Volume Gravity-Fed Water Purifier.

The Mission from LifeStraw has the award-winning, effective filtering system found in all LifeStraw filters, but uses a large bag and hangs from a tree to filter large amounts of water while you wait.

Design FeaturesLifeStraw Mission High-Volume Gravity-Fed Water Purifier Review 350

Purifies 99.99% of bacteria – The LifeStraw filter removes virtually all bacteria, viruses, and protozoa from the water you’re filtering. Making this filter about as safe as it gets.

Ease of use – With no moving parts, no chemicals, no batteries, it couldn’t be any easier to use. Read the full instructions below in the ‘How to Use’ section.

Huge capacity – The lifetime capacity of the filtration system is 18,000 liters, that’s 4,755 gallons of dirty water passing through and being filtered as safe to use.

Perfect for groups – The LifeStraw Mission was designed to supply water to large parties. It filters 1 liter of water in around 5-7 minutes, so you can keep the fresh water for cooking and drinking flowing at your campsite.

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How to Use

Once you’ve found a source of water, to use the Gravity-Fed Water Purifier start out by simply scooping up some of the water into the bag.

Be careful not to go above the white line marked on the top of the bag. If you do, when you roll the bag and seal it water will spill out.

Throw the strap that’s included with the filtration system over a strong branch or similar. The two hooks clip onto the top of the bag and it should be hanging freely, but secure.

Attach the filter to the bottom of the bag and you’re ready to start filtering water. Open the dirty water tap on the bottom of the filter and allow the water to pass through for around 10 seconds to release any air bubbles.

You can then use the clean water tap to let clean water flow through., It should take between 5-7 minutes to fill a 1-liter bottle.

To clean the filter system, ensure both taps are closed on the filter. Then squeeze the red bulb three times, pushing all the air out and letting it inflate again.

This back-flushes the membrane, open the dirty tap again to let any dirty water left in the filter run out.

The Pros

  • Large capacity is ideal for groups of people
  • Filter system is very effective, removing 99.99% of bacterias
  • It’s an inexpensive and convenient way to filter at the water source

The Cons

  • It will filter too slow for some groups
  • Requires something sturdy to hang from

LifeStraw Mission High-Volume Gravity-Fed Water Purifier SummaryLifeStraw Mission High-Volume Gravity-Fed Water Purifier Instructions

LifeStraw make some of the best water filters and purifiers on the market, and always at a very reasonable price.

One of the best features of their products is how easy they are to use. It doesn’t get much easier, all you need to do is collect water and pass it through the filter.

There is no aftertaste, no chemicals used, and you can carry one of their filters in your backpack and use it as little or as much as you want.

If you need a filter capable of servicing a group on a moment’s notice, the LifeStraw Mission is exactly what you want. Take a closer look via the link below and see some of the reviews for yourself.


You should have a water filter in your emergency kit at the very least, if not one like this that you’re going to use on a regular basis.

Having the LifeStraw Mission means you can travel much lighter, you can enjoy a more ‘outdoors’ experience by using water from an outdoors source, and best of all you can take care of your group by filtering liters of water for the evening and day ahead.

This is the best of the bunch in my opinion too. If you’re after a water purifier just for yourself check out the LifeStraw, if you are camping or hiking in a group, the Mission is the filter for the job.

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  1. Richard Corso
    • Dave

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