The graphs demonstrate the water supply systems from reservoir to sea in terms of roman aqueduct and updated syphon.
To start with the old and classic one, the system of roman aqueduct have a staight condult (a vital component of this system that conduct water flow) from the intake station, and its air-open section is supported by the specific a aqueduct bridge. The stage after the in the air path is supply water to urban area though its outlet, then water reaches its destination, sea.
Comparing with the Roman one, the modern technology that supplies water has a curved conduit instead of linear-shape, therefore all part of it is underneath the groud, the supporting infrastructure is no longer needed. In addition, there is an erectation of treatment plant and alteration of the intake stage : it became a sightly bigger one and its color changed from yellow to green.
In general, the pathway of water supply change in shape of conduct infrastion, and turns to have additional device to ensure the water quality rather than direct conducting to city.
