Unable to answer "Is drinking water available here? If so, what is its source?" – Drinking Water – https://osm.org/node/253547300 via StreetComplete_ee 57.4:

Kein Trinkwasser

Attached photo(s):
https://osmbilder.qugeb.de/sc/31.jpg
https://osmbilder.qugeb.de/sc/32.jpg
https://osmbilder.qugeb.de/sc/33.jpg