Agree on the water. Assuming it is not sh*t from a muddy wetland.
I once had very little water during a mountain crossing, we found water on a field left from a storm. We had two filters, I told my buddy to save some water to clean the filter, he didn't. His filter clogged. LOL. I had some water left to clean the filter, then we grabbed some water that wasn't so full of sand and mud and very slowly were able to filter enough for 3 people to have a drink.
Anyway, everything I learned, I learned it because it happened to me.