I assume the water comes from the aqueduct and is thus drinkable, however there was no explicit sign saying it was tested and/or drinkable. I just noticed it was not there on the map (as I was looking for a fountain) and decided to add it without much thinking, but I understand it would be better to just mark it as a water tap. Feel free to make the change yourself, I am not too familiar with the tags I should assign, and thank you very much for reviewing.