抄録
In Pompeii, two underground conduits have not functioned systematically as the main drainage to discharge the fountain runoff and rainwater. The forum had been isolated from the network of street drainage system, and a raised surface on the street north of the forum prevented the runoff from flowing into the forum. The four sewer holes caught the excess water running on 5 surface drain lines of which each collected the water from three or four street fountains and water towers. To control the water running on the street would have taken a water distribution system like the one already existing.
