Just because the spring is in the mountain does not mean it has not been contaminated. Animals fall in and die or die and fall in. Nasty debris can fall in - rotting leaves, animal feces and urine, etc. The water can pick up nasty stuff as it percolates through the ground including heavy metals. Springs are also not immune to growing bacteria or harboring parasites.
That said, I usually will still drink from a mountain spring.
Note that just because bottled water says it came from a mountain spring, it does not mean it isn't contaminated.
dont drink the spring the water
When the water from the waterfall reaches a lake, it will slowly vaporize and and rain further up the mountain, or during spring when the snow melts.
THEY DONT NEED TO DRINK, THEY LIVE IN THE WATER.!
Because you dont breath when you drink water
fish dont drink salt water they just feel it
no they dont
you will die
As they can get water from the pasture they are consuming.
dont drink a lot of water
you dont drink water but if you cook a fruit over the fire it makes juice
too many dont drink it. drink water.
i dont know if you like dirty water, but normal people dont drink water from the river