we have more than enough water

It's a rustic 'fountain' that cycles the natural spring water back through the drain sticking up at the far end. It can also be turned off any time (ie: winter) by way of the spigot handle on the tap. No water is being "wasted".

and everywhere in switzerland you are invited to drink that water. otherwise there should be as sign. usually you can drink the fountains water in austria, northern italy and germany

Since your timline suggests that you're not familiar with the alps I may tell you the reason for the open water tap. It's a well that was "piped" and redirected to this wooden tub, so it provides easy access to drinking water for people and cattle. The tap has to be open to keep it free of bacteria.

Thank you, all I thought seeing this was "quit wasting water wtf, that was pumped up a mountain show some respect"

That's likely a well, or a tapped spring. Unless there's a drought, the water is, for all intents and purposes, infinite.

Wells can dry out. Water recycles forever but much of our water is undrinkable (e.g., seawater). It's drinkable water that we have shortages of.

I have a 1500 gallon cistern that is fed by a spring. It overflows 10-11 months out of the year. We also have to have it tested yearly, and our water is purer than city water. This thing is in the mountains. Their water is likely purer and more abundant than mine is.

I still want to know where the water goes. 😅