If I see it come out of the ground I have zero issues drinking unfiltered water. With a filter I prefer streams first, lakes second, and ponds last in terms of

If I see it come out of the ground I have zero issues drinking unfiltered water. With a filter I prefer streams first, lakes second, and ponds last in terms of preference. I have made exceptions at high altitude and drunk from streams without a filter, but the idea of crippling diarrhea 20 miles from anything is frightening, and boiling water isn't always convenient on long trail days.