Water add to the wine

Water add to the wine
Question from on 05-18-2007:
Why is water added to the wine during Mass? What does it represent?

Also, I have noticed that some priest add it to just his chalice while other priests add it(water) to both his chalice and that given to the people. Is both ways acceptable or is one going against GIRM.

God Bless and Thank you
Answer by Rev. Mark J. Gantley, JCL on 05-19-2007:
The rubrics state that water is added to the chalice. If multiple chalices are used, it makes sense to add water to all of the chalices. In any case, the omission of water would not affect validity.

The prayer said silently while the water is added to the chalice is: "By the mystery of this water and wine may we come to share in the divinity of Christ, who humbled himself to share in our humanity." The prayer explains the ritual.