NSW has recorded another day without a new local COVID-19 case, but authorities have raised concerns about the drop in testing numbers.
Two coronavirus cases were reported in hotel quarantine in the 24 hours to 8pm on Monday, but it is the ninth day without a local infection.
There were just 7819 tests done over the 24-hour period.
"The drop in testing numbers is a concern," NSW Health said in a statement.
"Although NSW has had nine days without a diagnosed locally acquired case of COVID-19, the virus may still be circulating in the community and now is not the time to drop our guard."
NSW Health is also urging people in southwest Sydney to monitor for COVID-19 symptoms after virus fragments were detected at the Liverpool waste treatment plant.
Australian Associated Press