The incident took place when residents of ward number 8 went to waterworks office in Uttar area to complain against water supply disruption in their area for the last few days, they said.
The officials told them that damage in the motor and non- availability of electricity were the main reasons behind the disruption.
Dissatisfied with the reply of the staff, the agitated people damaged the office furniture and indulged into scuffle in which an employee and five others were injured, police said.
An FIR has been lodged against unidentified people in the case.