Since the context of that passage from Ezekiel is the New Birth, I would suggest that the sprinkling there is the washing with the Word of God, as indicated in Ephesians. It is God who sprinkles "clean water" upon the sinner. The context makes it clear that this is not ordinary H2O.
Then will I sprinkle clean water upon you, and ye shall be clean: from all your filthiness, and from all your idols, will I cleanse you. A new heart also will I give you, and a new spirit will I put within you: and I will take away the stony heart out of your flesh, and I will give you an heart of flesh. And I will put my [Holy] Spirit within you, and cause you to walk in my statutes, and ye shall keep my judgments, and do them. (Ezek 36:25-27)