How the Roman Aqueducts worked. 3 Interesting Facts about Roman Aqueducts: 1. There is still a functioning aqueduct from ancient times. The Acqua Vergine, built in 19 B.C., lives on as a functioning aqueduct. 2. Private users of aqueducts had to have a license for connecting pipes directly from the aqueduct to their property in exchange for a monetary value based on the length of the pipe. Some wealthy Romans even had their own aqueducts. 3. Farmers who had no access to the rivers or lakes, had