Drainage system
Recent demonstrations of the first urban sanitation systems in the world took place in important Indus Valley Civilization cities like Harappa and Mohenjo-Daro. In the principal towns of Harappa and Mohenjo-Daro, water and drainage systems were available to every home. The main streets were lined with covered gravity sewers, which received wastewater.
The sewage and drainage systems of that period turned out to be the most advanced and widely used ones. They were utilized everywhere in the Indus region, which at the time had the most sophisticated sanitation infrastructure.
The development and effectiveness of the sewage and drainage systems were such that the water used in residences was drawn from the wells, and the drainage pipes were directly connected to the operations of the main roadways.
The link between the input of safe water and the outflow of waste was controlled in such a way that it could not affect in any unfavorable ways because cleanliness was one of the most amazing deals at that time.
