The Ancient Romans built many aqueducts around the Empire. Aqueducts were an important engineering invention by the Ancient Romans because these aqueducts were used for numerous functions like heating baths.

The Aqua Alexandrina was one of the last aqueducts built in Ancient Roman times. Like other aqueducts part of it was built underground and connected to a local spring. Building a part of the aqueduct underground helped to keep the aqueduct from contaminating the water. The arches in the Aqua Alexandrina helped to control the flow and gradient of the water flow.

The Aqua Marcia was one of the longest aqueducts built in Ancient Rome. Unfortunately, the Aqua Marcia was built through the plunder of other nations, so that while others suffered for this Aqueduct, the Ancient Romans actually benefited from the Aqua Marcia. Wealthy citizens would often stick pipes to redirect the flow of water for their own private use.

The Anio Novus was the tallest aqueduct in Ancient Rome. Aqueducts like the Anio Novus required lots of planning ahead of time. The angle, gradient and source of water to be used must all be planned carefully. After the aqueduct is built, regular maintenance is needed. For example, when the pipes rusted, they had to be replaced.