Plato, Laws 844b

ἀυδρία δὲ εἴ τισι τόποις σύμφυτος ἐκ γῆς τὰ ἐκ Διὸς ἰόντα ἀποστέγει νάματα, καὶ ἐλλείπει τῶν ἀναγκαίων πωμάτων, ὀρυττέτω μὲν ἐν τῷ αὑτοῦ χωρίῳ μέχρι τῆς κεραμίδος γῆς, ἐὰν δʼ ἐν τούτῳ τῷ βάθει μηδαμῶς ὕδατι προστυγχάνῃ, παρὰ τῶν γειτόνων ὑδρευέσθω μέχρι τοῦ ἀναγκαίου πώματος ἑκάστοις τῶν οἰκετῶν· ἐὰν δὲ διʼ ἀκριβείας ᾖ καὶ τοῖς γείτοσι, τάξιν τῆς ὑδρείας ταξάμενος παρὰ τοῖς ἀγρονόμοις, ταύτην ἡμέρας ἑκάστης κομιζόμενος, οὕτω κοινωνείτω τοῖς

and there is a scarcity of necessary moisture, then the owner shall dig in his own ground down to the chalk subsoil, and if he fails to find water at this depth, he shall procure from his neighbors just so much as he requires for drinking purposes for all his household; and if his neighbors also are stinted in their supplies, he shall apply for a ration of water from the land-stewards, and fetch it day by day, and so share the water with his neighbors.