I agree with Coop13
The holy water is not a sacrament, but it is a sacramental and sacramentals can be used for blessings of both baptized an un baptized alike.
The Sacraments were instituted by Jesus Christ; most, but not all, of the sacramentals were instituted by the Church.
The Sacraments give grace of themselves and are always fruitful when the faithful place no spiritual obstacles in the way; the sacramentals excite pious dispositions, by means of which the faithful may obtain grace.
It is not the sacramental itself that gives grace, but the devotion, the love of God, or sorrow for sin that it inspires, and the prayers of the Church that render sacramentals efficacious against evil.
Although the Catholic Church restricts on the reception of the Sacraments by non-Catholics, this is not true of the sacramentals. The pious use of sacramentals by non-Catholics is permitted and encouraged.
As blessed objects or rituals that represent sacred beliefs and persons, disrespect to sacramentals is considered a form of sacrilege.
The Catechism of the Catholic Church states that sacramentals “do not confer the grace of the Holy Spirit in the way that the sacraments do, but by the Church’s prayer, they prepare us to receive grace and dispose us to cooperate with it.”