Parallel
Revelation 16:4
Nestle 1904 Greek New Testament · Berean Standard Bible
Καὶ ὁ τρίτος ἐξέχεεν τὴν φιάλην αὐτοῦ εἰς τοὺς ποταμοὺς καὶ τὰς πηγὰς τῶν ὑδάτων καὶ ἐγένετο αἷμα
And the third angel poured out his bowl into the rivers and springs of water, and they turned to blood.