Here is another five star review from Amazon.com-
"Purchased to take on Scouting Backpacking and hiking trips. I used it for refilling approximately 40 - 32 oz water bottles on first trip.
Water filtered was from a fairly clear creek, so I set the filter to the extended life setting and still pumped water at an incredibly fast rate (seemed much faster than advertised). Other Adult leaders were amazed at its speed and soon were asking to borrow it rather than use their model (the one I used to borrow). The water tasted great!!!We later found out that one of the older Scouts was drinking water straight from the Creek without filtering and/or treating with chemicals. That scout ended up vomiting during the trip. Not sure if it was related or not. No one else got sick and we were a group of 30.
Once I got home, I proceeded to clean the unit, very easy to do. This is now an essential item for each of my future trips. Be sure to use it at home prior to taking out into the field. You will want to flush out the carbon black dust and make sure it works prior to your trip. This is a well constructed unit. However, I recommend that you bring some back-up chemicals just in case you break it. You wouldn't want to be left without safe water."
