What are the limitations on the Shape Water cantrip?


I have been having a discussion regarding the Shape Water cantrip from the Elemental Evil Player’s Companion. A friend and I are trying to come to an accurate view of how this spell actually functions.

Some example questions:

  • Must the targeted water be within a 5 foot cube area, or does it need to be of a volume not exceeding 125 cubic feet?
  • If you shape water that is within a 5 foot cube, can the final shape you animate it to extend outside the cube?
  • Can you cause the shaping to affect ice and snow, or only liquid water?
  • Would you be able to carry a globe of water alongside you over distances?

Really, there are two parts:

  • What can be targeted by the spell?
  • What are the limitations on the ‘shape and animate’ portion of the spell?

The answer I am looking for, if possible, would use the language of the spell, possibly with precedent from other game text, to clearly define the limitations of this cantrip.