On our visit to India, we stopped at the Dhobi Ghat laundry in Mumbai. These photos give you an idea of how big the place is and the amount of laundry processed there each and every day.

The men who carry out the washing live in the huts you can see covered with corregated panels, this link will give you the history and more photos …https://theculturetrip.com/asia/india/articles/awash-with-color-a-visual-tour-of-mumbais-dhobi-ghat/