Input 1 - CSV/TSV: element;id;amenity;opening_hours;fountain;created_by node;2351682414;drinking_water;24/7;; node;1168549494;drinking_water;24/7;; node;257475935;drinking_water;24/7;;!delete node;2351682289;drinking_water;24/7;nasone;

Get OSM data from Overpass API Convert CSV to JOSM xml

Input 2 - OSM xml:

Output - JOSM xml: