I forgot 2 mention if ya ever out camping or hiking & got lost make sure ya gotta filter or atleast boil the water before ya drink it.
Animals have different digestive systems they just take a drink outta any old puddle usually doesnt bother them.
People are different drink out of a puddle or maybe what looks like a clear stream.
Their could be anything in that water and people systems & guts cant handle that stuff like wildlife systems can