It wasn't wise to allow a canteen to go empty in this country, but the water supply was getting low.
Generally there is, if possible, a water-supply in the vicinity; sometimes a nuraghe guards a spring, or there may be a well in the nuraghe itself.
At this point in the Haram enclosure there is an enormous underground cistern, known as the Great Sea, and this may possibly have been the source of water supply for the Greek garrison.
The city owns its water-supply system and owns and operates its gas plant; an electric plant, privately owned, lights the streets and many houses.
A flow pipe which serves also for expansion is taken from the top of the cylinder to a point above the cold - water supply and turned down to prevent the ingress of dirt.
