Mountain Safety Research

Mountain Safety Research SweetWater Purifer System


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Mountain Safety Research SweetWater Purifer System

Blending the proven filtration of the micro-filter with the chlorine-based SweetWater Purifier Solution, the MSR SweetWater Purifier System provides safe, clean water worldwide. The 4-to-1 mechanical advantage pump lever services a micron filter that eliminates water borne bacteria and protozoa, such as giardia and cryptosporidia, with a worst case purifying solution backup.

  • Material: lightweight polycarbonate construction is tough and durable
  • Compact design stows easily
  • Simply pump water and add the included MSR SweetWater Purifier Solution to innactivate 99.99% of waterborne viruses, bacteria and protozoan parasites
  • Chlorine-based purification has no unpleasant iodine taste
  • Dual-action draw with mechanical advantage provides easy pump and quick water supply
  • Sturdy lever-action pump handle provides a 4-to-1 mechanical advantage for easy operation (draws water on both the down and up stroke
  • Built-in filter replacement indicator monitors usage
  • 0.2 micron filter eliminates waterborne bacteria and protozoa such as giardia and cryptosporidia
  • SweetWater Purifier Solution is able to safely disinfect "worst case" water sources
  • Field serviceable and easy to clean with no small parts to lose
  • Includes a universal bottle adapter and a cover to keep the output clean
  • 2 fl. oz. bottle SweetWater Purifier Solution treats up to 80 gal. of water
  • Filters up to 200 gal.

Purchase the Mountain Safety Research SweetWater Purifer System from All order totals over $45 qualify for free ground shipping.

5 Star Rating


5 Stars Rickoon101 - November 10 2010

I used this on day hiking, backpacking trips, and during work. I bring this with me whenever I am out in the wilderness because it is small and portable to carry instead of carrying a load of water. It fills a 1 liter bottle in less then a minute because of its design allowing it to filter on both the up and down strokes. Just remember to get a silt-filter, this is great for keeping the SweetWater from getting clogged. MSR makes quailty stuff.

5 Stars Tim - April 10 2009

gets your water clean
It's prity simple, pump water out of stream and into your bottle. Gets it clean. I also purchased a pre filter. They say it makes it last longer, but I haven't had it long enouph to know how true that is. for the price, you cant go wrong

5 Stars claw - September 12 2008

great filter/purifier
Owner for six years. Used it under trying conditions in hiking and camping trips in Ghana, Africa. Easy to use and travel with. Never failed and I never got sick. Left it in Africa and purchased a new one yesterday. Strongly recommended. Bullet proof.

5 Stars Calvin Welch - May 12 2008

Great and priced right
It worked as good as stated and better. We had all the clean drinking and cooking water we needed. Easy action and easy for my boy scouts to use too.

4 Stars Robert I. - January 27 2008

Good value... keep it in your pants!
My friends and I used this filter hiking the Appalachian Trail in NJ this January. The filter worked great the first time, although all the hoses and connections are a pain to deal with in the cold. This lead to my next problem which was that the filter element froze solid after the first use. I had to put the filter in a ziplock bag and in my pants to thaw it out and keep from freezing. That was a real pain, however not a reflection of this filter design. I imagine all the filters would have frozen up.

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