User Review: Katadyn Hiker
Seven of us were on a 10-day hiking trip in a remote area (no humans in several kilometers around) of an island off the Pacific coast of Panama. The Katadyn filter was the only device that procured us with drinking water, which after filtering still kept a slightly yellowish color (iron? -we were around a fault line and parts of the nearby beach had sections of black sand).
I didn't have any problems with it, except that by the 5th day it became harder to pump. We pumped over 6 gal of water every day from a streak of water running over a bed of igneous rock. The filter now has an overall brownish tint. How do you know when you need to change your filter?