τὸ ἐγδοχῖον τοῦ ὕδατος καὶ τὰ ἐν τῆι πόλει ὑδραγώγια → the water reservoir and the conduits in the city (or on the acropolis)
catonium, inferna, inferus, infernus, tartara, erebus, acherunticus, inferi, gehenna, chaos, avernus, manes, barathrum, orcus, tenebrae