WORLD CIVILIZATION

Detailed explanation-1: -The Indus were the first people to have indoor plumbing, perhaps as early as 3000 BC. The pipes were positioned so that wastewater flowed down into the drain ditches that ran along every avenue in the city, and then into underground tunnels.

Detailed explanation-2: -All the streets and lanes across neighbourhoods in Mohenjo-daro had drains. In addition there was also provision for managing wastewater inside the houses with vertical pipes in the walls that led to chutes opening on to the street, as well as drains from bathing floors that flowed towards the street drains.

Detailed explanation-3: -In 1826, Isaiah Rogers, an architect, designed the indoor plumbing system for his hotel, The Tremont Hotel in Boston.

Detailed explanation-4: -Flush Toilet: Mohenjo-Daro circa 2800 BC is cited as having some of the most advanced, with toilets built into outer walls of homes. These toilets were Western-style, albeit a primitive form, with vertical chutes, via which waste was disposed of into cesspits or street drains.

Detailed explanation-5: -"Mohenjo-daro had some of the most advanced toilets and sewers, with lavatories built into the outer walls of houses. There were Western-style toilets made from bricks with wooden seats on top. They had vertical chutes, through which waste fell into street drains or cesspits.