The sacraments receive their power from our Lord, whose merits won them for us. They are not a result of any merits of the person administering them. The sacraments give grace of themselves, even when the priest (or, in some cases, another person) administering them is unworthy, as long as the recipient has the proper dispositions. Good medicine is good regardless of the druggist or physician.
Each of the seven sacraments (Confession, the Holy Eucharist, Confirmation, Matrimony, Anointing of the Sick and Holy Orders or becoming a Catholic through Baptism) are outward signs instituted by our Lord to bring grace to us. Each have their own proper ingredients (matter and form) which is necessary for them to transpire. The Norbertine community who staff Saint John the Baptist are well-known for their care in administering the sacraments properly and devoutly.