Days ago Gladys Berejiklian said Sunday's staple 11am press conference would be the last in the format that has become a daily ritual during the outbreak.

But instead of NSW Health leading the Monday morning update, Ms Berejikian returned to announce 1257 new cases of COVID-19 were found in NSW in the 24 hours to 8pm Sunday.

Seven deaths from COVID-19 were reported to NSW Health and 137,668 tests were conducted in the same timeframe.

A man in his 90s from Dubbo died at the St Mary's Villa Aged Care Facility, where he acquired his infection while other elderly people died at a range of Sydney hospitals.

There are 1,189 COVID-19 cases admitted to hospital, with 222 people in intensive care, 94 on ventilators.

South-western and western Sydney remain areas of concern, Ms Berejiklian said, but pleasingly there are signs of cases stabilising in some of the local government areas of concern in Sydney as well as some regional NSW areas.

"In regional NSW we have seen a stabilisation in cases, however in Hunter, Central Coast and Wollongong, we have seen an increase in cases," the premier said.

There have been 184 COVID-19 related deaths in NSW since June 16, and 240 in total since the start of the pandemic. There have been 38,856 locally-acquired cases reported since 16 June 2021, when the first case in this outbreak was reported.

Of the 1,257 locally acquired cases reported to 8pm last night:

NSW Health's ongoing sewage surveillance program has recently detected fragments of the virus that causes COVID-19 at the Yass and Eden, at Tamworth, at the Dunbogan and Karuah treatment plants in Mid North Coast, at Gerroa treatment plant in Illawarra and Brooklyn treatment plant in northern Sydney.