MSR SweetWater Purifier System

This is filter #4 for me. I have had the PUR Expedition, Katadyn Explorer, and am replacing the Vario with this one. I like that the filter is simple, and can easily be cleaned in the field, something I was used to with my old Expedition. I also like the action on the pump, compared to other straight shafted models. It helps make pumping easier. The flow rate is a little slower that I have been used to, but ultimately I am comfortable in trading off for the reliability and size of the Sweetwater. As far as clogging... I used it on about 40 L of water, without having to brush out the filter, but if water is really mirky, you could add the optional silt stopper, and that should eliminate most of the clogging particulate from entering the filter cartridge.

this is the second one that blew out on me. after a few trips, the pump stops working. does this mean that one should bring a second unit on a trip in case the original pump breaks? that's like the tail wagging the dog. looking for another solution. i'll give this pump a d+ ...MSR, get it together!

I love my sweetwater pump. The water tastes great, I've never gotten sick, it never clogs and hasn't broken. The pump is very field serviceable and easy to clean.

The Sweetwater was my pride and joy for several trips into the backcountry and it served me well.
About the 5-6th time I used it I was on an aborted hike/raft trip after all our rafts flipped us into the river at 7pm with only a few hours of daylight left. It was going to be a long night. Thank goodness I had my water filter, until, of course, the pivot system cracked on me and broke completely.

I returned it. The thing has way too many moving parts. I went to a Katydyn.

I really like this system. I've used it 10 or 12 times so far. I like being able to attach directly to a Nalgene and mine came with a Platypus bladder. It doesn't flow as fast as my son's Katydyn Hiker but it's not that much slower and I have peace of mind that it's getting everything. Plus the MSR is easier to clean in the back country.

Don't bother. It will only get you halfway there.

I love this water filter. It is very lightweight and easy to pack. Works great and is practically hassle free. If you're looking for an affordable, lightweight filter, this is it.

Quite easy to operate. Little confused / paranoid about the best way to repack it on the trail to avoid cross-contamination. (I'm a microbiologist & and so always thinking about this.)