What is the proper manner for the deacon to prepare the chalice on the altar? I visited another diocese and saw that the deacon blessed the cruet containing the water when he was preparing the chalice. I have seen a priest pour water into the flagon and not the chalice. I have also seen a priest pour water into each of the chalices.
The diocesan Pastoral Manual provides that the deacon should not bless the cruets in which the water and wine are brought forward, pour water into the flagon, or pour water into other chalices (C-50).
When preparing the chalice, the deacon pours wine and a little water into the presider’s chalice saying quietly: "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." He then passes the chalice to the presider.
The chalice may be prepared on the altar or a nearby credence table.
Bishop Vásquez prefers priests in the diocese to prepare the chalice in the same manner.