Excavations at many Harappan settlements have revealed the existence of wells. These wells were attached to houses. Wells were the primary means of drawing water that were used extensively by the people. Wells were constructed inside a room which could be reached from the outside. These could also be used by passers—by and guests. According to scholars, there were approximately 700 well in the Mohenjodaro. Due to the large number of wells discovered in Mohenjodaro, the settlement is also referred to as the ‘city of wells’.