In context of overlay "Things" – Spring – https://osm.org/node/12110339677 via StreetComplete 58.2:

Studánka, přiložen rozbor vody

Attached photo(s):
https://westnordost.de/p/232395.jpg
https://westnordost.de/p/232396.jpg
https://westnordost.de/p/232397.jpg