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"There have been some great numbers for Kiama, 40 per cent of people have received double doses and 68 per cent of people have received a single dose," he said.

"In Eurobodalla Shire 39 per cent of people have received a double dose and 73.7 per cent of people received a single dose.

"In Wingecarribee Shire 38.7 per cent of people have received a double dose and 65.4 per cent of residents have received a single dose.

"We continue to see a big push for vaccinations and we are encouraging people to get vaccinated."

Vaccination efforts will ramp up in Bega, Queanbeyan and Goulburn.

Mr Barilaro said it was clear that there was a need for greater vaccinations in the Southern region.

He said he was awaiting advice from the Southern NSW Local Health District on the capacity of the three southern hospitals to increase their vaccination rates, with updates expected by Friday.

"We believe we can ramp up the effort three times to four times of the number of vaccinations that can be done in a day," he said.

"It will include walk-in hubs where you can get a shot without booking through the system.

"On Friday I hope to have a more public position on what that looks like."

However, high vaccination rates won't be enough to pull individual local government areas out of lockdown.

"We aren't using vaccination as a reason to get out of regional lockdowns because it's hit and miss in the regions," Mr Barilaro said.

"I think it's unfair because the supply of vaccines in the region is hit and miss.

"I don't want to link freedom to vaccinations in this early stage. Regional and rural lockdown will be based on cases, proximity to large case LGAS and surveillance such as sewage and contact tracing."

A decision on whether the regional and rural lockdown will be extended will be announced on Thursday.

Mr Barilaro said he did not doubt that there would be some restrictions for many local government areas in rural and regional NSW.

"What we now have to consider is how many local government areas will be impacted and then make a decision if we go by local government areas."

On the South Coast, Covid-19 fragments were detected at a sewage treatment plant in Merimbula.

Mr Barilaro outlined that surveillance of sewage systems could often find low levels of the virus which disappear.

However, the Merimbula sample contained a high enough level that "clearly shows that someone is in the community with the virus".

Mr Barilaro indicated it may have been a visitor to the area, particularly due to the Far South Coast's proximity to Canberra.

"We still have authorised workers [moving between regions] - truck drivers, construction workers, health workers and people in disability can do that.

"We also had the mass exodus out of Canberra when their lockdown approached.

"Anything could've triggered this [sewage fragments in Merimbula].

"My concern is there is still a level of movement out of Canberra and maybe even Sydney. I can't quantify that, but it's a concern."

Goulburn Mulwaree Council has also ramped up its sewage surveillance testing.

A statement from the council said they tested sewage twice a week for traces of Covid-19.

"Despite three current cases of positive COVID-19 in our community last week we are not seeing traces of the virus in our sewage which is positive news," they said.

"This is likely because those cases were isolated and not infectious in the community at any time."

There have been zero traces of Covid-19 in Wingecarribee Shire Council since August 17.

Across NSW, 919 people tested positive for Covid-19 and more than 149,200 people were tested for the virus up until August 24, 8 pm.

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