Vitruvius was writing in the 1st century BC when many of the finest Roman aqueducts were built, and survive to this day, such as those at Segovia and the Pont du Gard.
Vitruvius menulis pada abad ke-1 SM ketika banyak saluran air Romawi yang terbaik dibangun, dan bertahan sampai hari ini, seperti saluran air di Segovia dan Pont du Gard.