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  • Awesome Gear, Amazing Service

MSR SweetWater Microfilter

Item # MSR02277

Availability: In Stock!

Ships tomorrow.

Availability: In Stock!

Ships tomorrow.
The MSR SweetWater microfilter is fast and easy to use. The lever-action pump delivers water on both the up and down strokes.


The MSR SweetWater microfilter is fast and easy to use. The lever-action pump delivers water on both the up and down strokes, with a flow rate of 1+ liters per minute.

If the granular activated carbon filter becomes clogged, it can be cleaned with a simple brushing, and the filter is good for up to 750 liters of water before replacement. The SweetWater even lets you know when the filter becomes clogged by releasing a stream of water from the pressure release valve.

The SweetWater microfilter is effective against bacteria and protozoa such as Cryptosporidium and Giardia, and also removes tastes and odors.

At only 11 oz. and measuring 7.5 in. x 2 in., the SweetWater microfilter is easy to pack and carry.

Kit includes: microfilter, hose float, filter cleaning brush, color coded hoses, prefilter, carry bag and instructions.

  • Fast: Pumps at a fast flow rate of 1+ liters per minute.
  • Easy to Use: Lever-action pump handle has a 4-to-1 mechanical advantage and dual pump action, so you don't have to work as hard.
  • Lightweight: Filter unit weighs just 11 ounces.
  • Compact: Handle folds flat when not in use for easy packing and storage.


Best Use Backpacking
Removes Giardia; Cryptosporidium; Bacteria; Taste
Item Weight 11 oz.
Flow Rate 1+ Liters per minute
Filter Material 0.2 micron Silica Depth
Dimensions 7.5 x 2 in.

7 Item(s)

Great Filter So Far

Likes: Took the MSR Sweetwater Filter on a recent section hike on the Appalachian Trail. The filter worked as described. Pumping action was smooth and output was consistent. I worked best by far of all of the filters used, including another MSR filter and a Katadyn Hiker. I was filling a 2L Platypus bottle in less time than the others filled a 1L nalgene. Other filters also had to be cleaned more frequently than the Sweetwater. Just use the included cleaning brush, reassemble, and continue filtering. Definitely happy with purchase.

Dislikes: None.

Reviewed by Fix - July 24, 2016

Likes: Excellent product, cannot go wrong here. Easy to use and quick to filter, really like the water bottle attachment.

Dislikes: None at this time

Reviewed by Inside Edge M. - March 11, 2015

Likes: This is the workhorse of the MSR waterfiltration line. Seems to be durable and reliable. I like you can clean the filter.

Dislikes: A little on the heavy side relativey speaking.

Reviewed by Inside Edge M. - November 6, 2014

Likes: Very easy to use. This is my first hand pump filter and So far it has been great.

Dislikes: Hoses could be longer but not really a big deal.

Reviewed by Josh S. - July 16, 2012

Likes: Packs Small, Lightweight, easy to use and clean.

Dislikes: Some plastic parts seem weak

Reviewed by Robert C. - November 4, 2011

Likes: Efficient little pump. Blows out a lot of water quickly! Easy to use. I think it has been effective, because as of yet no GI issues!

Dislikes: No complaints! I will let you know if things change!

Reviewed by Jeffrey B. - February 4, 2011

Likes: I have owned a Sweetwater filter for years and have found them to be a very reliable high output filtration device. My old replacement cartridges appear to still work on the new MSR brand which is a major plus.

Dislikes: The MSR plastic pump connection to the handle does not appear to be the same thickness of plastic as the old Sweetwater version so time will tell whether it holds up or not. My oldSweetwater filet has been on 20+ Boundary Water trips and several hiking trips, it now rest at the bottom of Agnes lake.

Reviewed by Gerald N. - September 20, 2010