

Waternews
E.E Professor Alberto Salotti


The first water distribution system appeared about 4,500 years. But the man learned to store water for their own benefit well before. See the chronology:
Beginnings
Uncooked clay pots emerge around 9000 BC The pottery itself appears in 7,000 BC and it is fundamental to increase the water storage capacity
Irrigation starts to be used in 5000 BC in Mesopotamia and Egypt, along with drainage channels, recovering wetlands of the delta of the Nile and the Tigris and Euphrates rivers
The first dam to store water was built in Egypt in 2900 BC by the Pharaoh Menes to supply the capital, Memphis. The first stone dam was built by the Assyrians in 1300 BC
The first efficient water distribution system began in 2500 BC in the Indus Valley in India and supplied the city Mohenjo-daro. Included channels to carry water to the houses and a complete system of sewage collection
The first known aqueduct was built in 700 BC by Ezequiel king of Judah, to supply Jerusalem. In 691 BC, Sennacherib of Assyria, build a 80km canal and aqueduct of 330 m
Modern era
The first water desalination plant in Chile comes in Las Salinas, in the 18th century The system used the sun's energy to evaporate and condense water. The first major plant is installed in Kuwait in 1949.
The first water treatment plant was built in London in 1829, and filtered water from the River Thames with sand. The chlorine addition started to be made even in the 19th century, and the fluoro, 1951
American researcher discovers, in 1946, a means to provoke artificial rain. Operational difficulties, however, prevent it to become viable as a means of combating drought.
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