There are now 75 active cases and 142 exposure sites across the state.
The state posted four new local cases of coronavirus on Thursday, with the Department of Health investigating the source of acquisition.
The cases were from the same household in Reservoir, in Melbourne’s northern suburbs.
It comes after health authorities uncovered three more concerning sewage detections of Covid-19 overnight.
The health department said there had been three new positive detections of coronavirus viral fragments in wastewater samples taken in the Pascoe Vale, Scoresby and Vermont areas in a statement late on Thursday.
Residents and recent visitors to the following suburbs between June 3 аnd 7 hаve been urged to monitor for symptoms аnd get tested if аny develop:
- Glenroy, Hadfield, Oak Park, Pascoe Vale; Burwood East, Forest Hill, Glen Waverley, Scoresby, Vermont South, Wantirna South, Wheelers Hill; Balwyn, Balwyn North, Blackburn, Blackburn, North, Box Hill, Box Hill North, Bulleen, Doncaster, Doncaster East, Donvale, Mitcham, Mont Albert, Mont Albert North, Nunawading.