Catechism of the Catholic Church §1217 — excerpt
In the liturgy of the Easter Vigil, during the blessing of the baptismal water, the Church solemnly commemorates the great events in salvation history that already prefigured the mystery of Baptism:
This translation is under copyright, so only the cited words are quoted here. Follow the link for the full text. Translation: English translation of the Catechism of the Catholic Church, 2nd ed. (Libreria Editrice Vaticana), as posted at vatican.va.
Also cites: Roman Missal, Easter Vigil 42: Blessing of Water