For the next part of his experiment, the camper collected the dirty pond water in a water bag and passed it through a portable filter straw. Pouring it into a cup, he was surprised to observe the ...

Little else ruins a good backpacking trip like a midnight run for the bushes. We’ve been there, and we’re not keen on going back, which is why our experts have found the best backpacking water filters ...

A measure of how effectively the filter removed flavor taints, along with the resulting odor taints, that CR added to plain water with minimal intrinsic flavor and odor (the "control" water).