Strabo Geography 16.2.13

[13] Aradus is in front of a rocky coast without harbours, and situated nearly between its arsenal ¹ and Marathus. It is distant from the land 20 stadia. It is a rock, surrounded by the sea, of about seven stadia in circuit, and covered with dwellings. The population even at present is so large that the houses have many stories. It was colonized, it is said, by fugitives from Sidon. The inhabitants are supplied with water partly from cisterns containing rain water, and partly from the opposite coast. In war time they obtain water a little in front of the city, from the channel (between the island and the mainland), in which there is an abundant spring. The water is obtained by letting down from a boat, which serves for the purpose, and inverting over the spring (at the bottom of the sea), a wide-mouthed funnel of lead, the end of which is contracted to a moderate-sized opening; round this is fastened a (long) leathern pipe, which we may call the neck, and which receives the water, forced up from the spring through the funnel. The water first forced up is sea water, but the boatmen wait for the flow of pure and potable water, which is received into vessels ready for the purpose. in as large a quantity as may be required, and carry it to the city. ²