 Under Peshwa rule, the urban elite came from the Chitpavan Brahmin community; they were the military commanders, the bureaucrats and the bankers, and had ties to each other by marriage.Nanasaheb built a lake in Katraj, on the city's outskirts, and a still-operational underground aqueduct to bring water from the lake to Shaniwar Wada.The city received an underground sewage system in 1782 which discharged into the river.