Genius Maintenance Secrets of Aqueduct of Constantinople Revealed
Over time, these chalky white deposits can build up on rock, brick, concrete, or metal surfaces where water runs. The longer water runs through a copper pipe, for example, the more calcium carbonate deposits will build up inside. Eventually, they can become so thick that water flow is restricted or blocked altogether, at which point a plumber will need to be summoned to clean the pipes. Limescale buildup could be a problem in aqueducts, too. The spring water harvested for aqueduct transport would have picked up dissolved deposits of calcium carbonate from limestone and other surroundin...
Source: ancient-origins.net