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Exstream XR Water Purifier
Gear Review

Exstream XR Water Purifier


Page Type: Gear Review

Object Title: Exstream XR Water Purifier

Manufacturer: Katadyn

Your Opinion: 
 - 1 Votes


Page By: Bryan W

Created/Edited: Mar 18, 2004 / Mar 18, 2004

Object ID: 1044

Hits: 2198 


Just dip and sip - the easiest, most convenient way to treat your water. Excellent for traveling, paddling, biking, day hikes, fishing, etc. Carry loop provides easy attachment to packs, kayaks, etc. No hassle with hoses, pumping, or separate containers. Just scoop or fill the bottle with water and squeeze. The ViruStat purification cartridge purifies water on demand (no waiting). Highest safety level - removes bacteria, protozoa (Giardia, cryptosporidium) plus kills over 99.99% of waterborne viruses, as determined under the U.S. EPA. Treats 26 gallons (100 liters) per replacement cartridge (4-6 weeks when used regularly). The only EPA registered purifier bottle. 34 oz. bottle (similar to Nalgene 32 oz. size) (not pictured). Wt. 7 oz.


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MoniUntitled Review

Voted 5/5

I bought an Exstream 4 years ago to take to Nepal and Tibet. The bottle can be used without the filter and the tip spout allows quick access. I have never had a problem with the tip opening on it's own. The filter comes in 3 pieces, so you can decide which combinations of filters are best for your application.

With the filter, the water comes out somewhat slowly, but I expected that. I take one with me on overnight trips plus regular water bottles. I use the Exstream to filter water into the other bottles. It takes about 5 minutes to filter 1 liter of water. Yes, it's slow, but not ridiculously so (what else is there to do in camp?) and saves a bunch of weight. I do not filter water I intend to boil.

I found that without the filter, the bottle can take boiling water just fine (did that in Tibet, so I could use it in my bag as a heater). It never leaked.

I highly recommend them. I believe these are one of the only systems with EPA approval.
Posted Jul 7, 2004 4:00 pm

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