The ancient Rome elevated bridge built in the first Century ad is the symbol of Segovia. It is also one of the most complete imperial relics of Rome. The water diversion bridge is used to draw water into the city’s high terrain, 728 meters long, with 166 bridge holes, completely built with huge stones and no use of any mortar or cement.
In modern times, all towns and houses must have a good water supply system. The ancient Romans had the same idea before 2000. Every time a new city was built, the ancient Romans built canals and brought water to the city.
In Nimes, France, the old water supply system can no longer meet the needs of New Roman cities. So Markus Agrippa, who was in charge of the ancient Rome water supply project, built a canal to bring the water 50 kilometers away into the city.
The Romans routinely buried the diversion canal underground, but somewhere the canal had to cross the Garr valley. The ancient Romans built the magnificent Garr bridge here. It is 269 meters long and flows across the valley at 49 meters above the river.
Inside the walls of Nimes, people can still see a circular pool. It has a sedimentation tank and a series of gates and outlets. These facilities were used to direct water to the water supply system in the city when needed.
The earliest knowledge of water treatment is documented in Sanskrit medicine and Egyptian inscriptions. The description of the device for clearing liquid (water and wine) discovered in Egypt dates back to 1500 BC. Purifying water such as filtration and clarification has been in the history of nearly a thousand years.
The modern public drinking water system started in England and Germany. In 1855, John Sno first recognized the fact that water supply is the root cause of disease transmission through the study of water pollution and epidemic diseases in London. At this point, the bacterial theory of the disease has not been established.
The diversion canal is one of the water diversion tools used in ancient civilization. Ancient Rome is the most widely used civilization in existing drainage channels. The first canal built in ancient Rome was a culvert with a total length of 16 km, and the construction time was 310 BC.
In 144 BC, the first diversion channel was built, with a total length of 90 km, of which the length of the empty bridge is 16 km. In ancient Rome, more than 10 diversion channels were built, and 140 thousand tons of water could be supplied daily. Some channels are still playing a role. They deliver water to the city fountain.