Mysterious Moen-Jo-Daro setlement of Harrapa civilizations ( Indus Valley – Pakistan) the cleanest city of Ancient History (2600-1900 BC) ?! How irony passes through history..in 2015 there are a plenty of localities with rudimentary sanitation services across the globe. Are you aware about other examples?
Book Chapter: Saifullah Khan- Sanitation and wastewater technologies in Harappa/Indus valley civilization (ca. 2600-1900 BC)