How Were Roman Aqueducts Built?

The construction of the Roman aqueducts are actually incredibly well described in a book written by Vitruvius that was called De Architectura. Basically, this architect discovered a problem among the intake of water by the aqueducts, the fecies, and the water supply and knew that something had to be one in order to fix these problems. He eventually came up with a way to create various channels that diverted the bad waste water and the good water supply from the river.