Rome’s very first raised aqueduct, Aqua Anio Vetus, was built in 273 BC; before that, citizens residing at higher elevations had to rely on natural springs for their water. Outside of these aqueducts and springs, wells and rainwater-collecting cisterns were the only technologies obtainable at the time to supply water http://www.arcadetrainer.com/index.php?params=profile/view/2495386/