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The image details two diagrams comparing water supply methods. The "Water supply: Roman Aqueduct" diagram shows water flowing from a reservoir through an intake and conduit, crossing over an aqueduct bridge, continuing through a city, and emptying into the sea. The "Water supply: Modern Syphon" diagram depicts water flow starting at a reservoir, passing through an intake and conduit, descending and ascending through a syphon, entering a treatment plant, and then moving through a city to the sea.
Given the complexity of the image, the above description may not be entirely accurate.
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The illustrations show how people supply water to a city using Roman Aqueduct and Modern Syphon.
Overall, all steps show completely similar with the exception of conveying water to city.
At begin, according to diagram of Roman Aqueduct, water is intaken from reservoir, before flowing water through the conduit in the mountain. Then, once reaching valley, water go through aqueduct bridge. FInally, water is conveyed to the city.
Next, according to illustration of modern syphon, it is the same way before reaching the valley. Water remains to pass the conbuit under the ground even if reaching the valley. After that, water is cleaned in the treatment plant before sending it the city.
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