Just to contrast the different types, I’ve attached some examples of the blessings. I’ve trimmed these down to make them fit, but it gives you an idea.
Holy Water (Book of Blessings – Current)
Blessed are you, Lord, all-powerful God,
who in Christ, the living water of salvation,
blessed and transformed us.
Grant that when we are sprinkled with this water
or make use of it,
we will be refreshed inwardly by the power
of the Holy Spirit
and continue to walk in the new life
we received at Baptism.
We ask this though Christ our Lord.
*Holy Water (Rituale Romanum –Extraordinary Form) “Exorcised”
Exorcism of Water
O water, creature of God, I exorcise you in the name of God the Father almighty, and in the name of Jesus Christ His Son, our Lord, and in the power of the Holy Spirit. I exorcise you so that you may put to flight all the power of the Enemy, and be able to root out and supplant that Enemy with his apostate angels: through the power of our Lord Jesus Christ, Who will come to judge the living and the dead and the world by fire. Amen.
Let us pray.
O God, Who for the salvation of mankind has built Thy greatest mysteries on this substance, water, in Thy kindness hear our prayers and pour down the power of Thy blessing + into this element, made ready for many kinds of purifications. May this, Thy creature, become an agent of divine grace in the service of Thy mysteries, to drive away evil spirits and dispel sickness, so that every-thing in the homes and other buildings of the faithful that is sprinkled with this water may be rid of all uncleanness and freed from every harm. Let no breath of infection, no disease-bearing air, remain in these places. May the wiles of the lurking Enemy prove of no avail. Let whatever might menace the safety and peace of those who live here be put to flight by the sprinkling of this water, so that the healthfulness, obtained by calling upon Thy holy name, may be made secure against all attack. Through our Lord Jesus Christ, Thy Son, Who lives and reigns with Thee in the unity of the Holy Spirit, God, for ever and ever.
The blessing for Epiphany Water takes well over a half hour, and includes multiple exorcisms, the Te Deum, the Litany of Saints, and many prayers of blessing. I’ll just leave it at that.
Easter Water (Current Missal)
O God, who by invisible power
accomplish a wondrous effect
through sacramental signs
and who in many ways have prepared water, your creation, to show forth the grace of Baptism;
O God, whose Spirit
in the first moments of the world’s creation hovered over the waters,
so that the very substance of water
would even then take to itself the power to sanctify;
O God, who by the outpouring of the flood
so that from the mystery of one and the same element of water would come an end to vice and a beginning of virtue;
O God, who caused the children of Abraham to pass dry-shod through the Red Sea,
so that the chosen people,
set free from slavery to Pharaoh,
would prefigure the people of the baptized;
O God, whose Son,
baptized by John in the waters of the Jordan,
was anointed with the Holy Spirit,
and, as he hung upon the Cross,
gave forth water from his side along with blood,
and after his Resurrection, commanded his disciples:
“Go forth, teach all nations, baptizing them
in the name of the Father and of the Son and of the Holy Spirit,” look now, we pray, upon the face of your Church
and graciously unseal for her the fountain of Baptism.
May this water receive by the Holy Spirit
the grace of your Only Begotten Son,
so that human nature, created in your image
and washed clean through the Sacrament of Baptism from all the squalor of the life of old,
may be found worthy to rise to the life of newborn children through water and the Holy Spirit.May the power of the Holy Spirit, O Lord, we pray,
come down through your Son into the fullness of this font,
so that all who have been buried with Christ
by Baptism into death
may rise again to life with him.
Who lives and reigns with you in the unity of the Holy Spirit, one God, for ever and ever.