Which one of the following Harappan sites has yielded evidence of a wash basin in the toilet of a house?

The Harappan site of Lothal in Gujarat is renowned for its advanced hydraulic engineering and sanitation features. Excavations at Lothal revealed sophisticated drainage systems where private houses were equipped with bathrooms and toilets [3]. Specifically, evidence of a wash basin-like structure within a house's toilet area has been identified at Lothal, reflecting the high priority Harappans placed on cleanliness and water management. While other major cities like Mohenjo-daro and Rakhigarhi also possessed advanced urban sanitation, including brick-paved bathrooms and dedicated waste disposal holes [3], the specific architectural detail of a wash basin in a domestic toilet context is most notably associated with the findings at Lothal. This site also features a massive dockyard basin, further demonstrating the inhabitants' mastery over water-related infrastructure.

Sources

1. [3] https://en.wikipedia.org/wiki/Sanitation_of_the_Indus_Valley_Civilisation
2. [2] Exploring Society:India and Beyond. Social Science-Class VI . NCERT(Revised ed 2025) > Chapter 6: The Beginnings of Indian Civilisation > Water Management > p. 94