Unable to answer "Is drinking water available here? If so, what is its source?" – Nr 2 (Drinking Water) – https://osm.org/node/4268425402 via StreetComplete 58.0:

Couls not find it. It may be in some other place but here its only bushes and trees.

Attached photo(s):
https://westnordost.de/p/219165.jpg