NSW recorded zero new locally acquired cases of COVID-19 in the 24 hours to 8pm last night.
This was the second day in a row with zero cases reported.
There were three cases recorded in returned travellers, bringing the total number of COVID-19 cases in NSW since the beginning of the pandemic to 4,890.
There were 19,959 tests reported to 8pm last night, compared with the previous day's total of 10,621.
The three new cases reported to 8pm last night were acquired overseas.
Testing numbers have risen in recent days but are still insufficient to provide confidence that chains of transmission will be picked up.
High testing rates help reveal cases that would otherwise go undetected and are an invaluable tool in helping to stop the spread of COVID-19.
NSW Health is urging people to continue to come forward with even the mildest of symptoms.
The best way to protect your family and community is to get tested if you experience any likely symptoms, such as a sore throat or cough.
Every person who gets tested plays an important role in helping to contain the spread of COVID-19.
People in Sydney's south-west are being asked to be extra vigilant when it comes to symptoms after NSW Health's ongoing sewage surveillance program overnight detected fragments of the virus that causes COVID-19 at a treatment plant in Glenfield, which takes in a catchment of more than 160,000 people.
While this could reflect known returned travellers in the area, everyone living or working in Airds,
Ambarvale, Appin, Bardia, Blair Athol, Blairmount, Bow Bowing, Bradbury, Campbelltown, Casula, Claymore, Currans Hill, Eagle Vale, Englorie Park, Eschol Park, Gilead, Glen Alpine, Glenfield, Gregory Hills, Holsworthy, Ingleburn, Kearns, Kentlyn, Leumeah, Long Point, Macquarie Fields, Macquarie Links, Menangle Park, Minto, Raby, Rosemeadow, Ruse, St Andrews, St Helens Park, Varroville and Woodbine should monitor for symptoms and get tested and isolate immediately if they appear.
There are more than 350 COVID-19 testing locations across NSW, many of which are open seven days a week.
To find your nearest clinic visit https://www.nsw.gov.au/covid-19/how-to-protect-yourself-and-others/clinics or contact your GP.