According to the website of the shelter at Skåneledens homepage
https://www.skaneleden.se/plats/lagerplats-sturup the water source is a handpump and the water should be treated before use.
So I would not map it as a well for drinking water - unsure if we should map it at all, people coming to the place will see it anyway and it is only more convenient then fetching water at the lake not of better quality.