The Management of Waste Water and Storm Water
In cities of the Indus Valley (present day Pakistan) from about 2500 to 1500 B.C., some houses had bathrooms with flushing toilets! They had well-designed drainage systems. The Greek civilization, starting from around 1500 B.C., had the earliest environmentally clean system of ancient times. They constructed well-planned urban (city) drainage ... ................
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