Personally I am quite confident that this will be gotten under control quite quickly (ie say one incubation period). Our health officials all know what to do these days, and this appears to only be a relatively new outbreak.
There will be an initial surge as people were infected, and they will have been contact with others (households and other venues), and so people will return positive tests for a little bit yet. But hopefully new transmissions will have ceased except with households where people are still in close contact..
But containment has now cut in and any outlying cases if they pop up will we similarly closed done.
No other positive tests have popped up elsewhere , and the sewage testing is also promising, and so it looks like this is a new outbreak, and nota branch of an older transmission. This is important as it will make it much easier to stamp it out.
Tests today where only twelve thousand odd, and I personally would see it over twenty thousand per day for a while to to be assured that it has not also popped up elsewhere in NSW.