2 of 3 deleted 20 characters in body

I think, these translations would be best:

  • chilled water = kaltes/gekühltes Wasser (gekühlt sounds a bit better)

  • ambient water --> there are multiple possible translations:

    • raumtemperiertes Wasser (this is an official word by producers of water dispensers)
    • ungekühltes Wasser (like you already said)
    • laues Wasser
  • hot water = warmes/heißes Wasser