τὸ ἐγδοχῖον τοῦ ὕδατος καὶ τὰ ἐν τῆι πόλει ὑδραγώγια → the water reservoir and the conduits in the city (or on the acropolis)
hippūris: ĭdis, f., = ἵππουρις,I horsetail, a water-plant; pure Lat., equisetum, Plin. 26, 13, 83, § 132; App. Herb. 39.