"All the modelling indicates to us that the peak is likely to be here in the next week or two," the premier said on Sunday.

"The peak in hospitalisation and intensive care is likely to be with us in October."

Ms Berejiklian said she would this week release the modelling on case and hospitalisation predictions, all of which informs health rules.

"It is important to be as open and transparent as possible but we also want to be clear about the modelling changes every single day," she said.

NSW reported 1485 new locally acquired cases of COVID-19 and three deaths on Sunday as authorities battle to contain the spread of the virulent delta strain through the locked down state.

The three deaths in the 24 hours to 8pm on Saturday were a woman in her 50s who'd had one vaccine dose, who died at Blacktown Hospital, a woman in her 70s who died at Campbelltown Hospital and a man in his 70s who died at Liverpool Hospital, both of whom were unvaccinated.

The death toll for the current NSW outbreak is now 126.

There are 1,030 COVID-19 patients in NSW in hospital, with 175 in intensive care and 72 who require ventilation.

The premier said 40 per cent of the state's population was now fully vaccinated.

"That is an incredible milestone to have reached given where we were a few months ago," she said.

Ms Berejiklian also flagged that home quarantine would eventually be an option for fully vaccinated citizens returning home to Australia.

NSW Health's Dr Jeremy McAnulty asked people in the state's regions to come forward and get tested for even the mildest of symptoms.

Meanwhile, an isolation hub, including 30 caravans, is being established at Wilcannia in the state's far west where more than 13 per cent of the town's predominantly Indigenous population have caught the virus.

The government will make a decision as to whether restrictions can ease in regional NSW after Friday.

At least 73 per cent of NSW residents aged 16 and over have had at least one vaccine dose, with more than 7.3 million jabs administered in the state.

A survey of more than 6,500 hotel staff across NSW has found the majority of employees support the premier's calls for double vaccination and more than half will be fully vaccinated by the end of October.

The Australian Hotels Association NSW Chief Executive Officer John Whelan said it was encouraging that 63.5 per cent of employees surveyed believed it should be a requirement for all hotel employees to be fully vaccinated.

"If you want to get down to the pub when we re-open, get vaccinated now," Mr Whelan said.

"You'll need two jabs and you don't want to be left out when things finally open up."

A smaller number (6.6 per cent) of staff said they did not intend to be vaccinated while 9.5 per cent were undecided.

Australian Associated Press