Georges River Council has activated its Emergency Operations Centre in response to exploding COVID-19 cases in the local government area (LGA).
A council spokeswoman said the move, which was taken on Saturday, came as active COVID-19 cases in the LGA reached 92 that day
Georges River is among eight LGAs in Greater Sydney now subject to greater restrictions after being deemed COVID-19 hotspots.
NSW Health has also been closely watching the neighbouring Bayside Local Government Area, which has been dubbed an area of concern in recent weeks.
The number of COVID-19 cases in the St George area has continued to grow significantly over the past week, with the number of active cases today standing at 133 - an increase of 38 on the 95 cases a week ago.
NSW Chief Health Officer Kerry Chant had previously said she had "quite significant concern" about COVID-19 cases in Hurstville and Kogarah because of the lack of a "demonstrable link" between those infected who live in the area and "missing links" in the chain of transmission of some cases.
"We are finding unlinked cases ... and that means there are chains of transmission we are yet to track and yet to break," she said.
Since then, case numbers have continued to rise.
The NSW Health Map of NSW COVID-19 positive cases and testing by postcode NSW Health for today, August 2, showed there were 133 cases in the St George region.
The largest number is now in the 2207 postcode, which takes in Bardwell Park, Bardwell Valley and Bexley, with 19 active cases, up from just one week ago.
Next is the 2210 postcode, which takes in Lugarno, Peakhurst and Peakhurst Heights, where there are 18 active cases, up from 16 last Monday.
The 2223 postcode, which takes in Mortdale and Oatley, has 18 active cases (up from nine).
The 2209 postcode, which takes in Beverly Hills and Narwee, has 17 active cases (up from 10).
Next is the 2220 postcode, which takes in Hurstville and Hurstville Grove, where there are 14 active cases (up from 11).
2216 postcode, which takes in Banksia, Brighton-Le-Sands and Kyeemagh, nine active cases (unchanged).
2217 postcode, which takes in Beverley Park, Kogarah and Kogarah Bay, five active cases (down from six).
2218 postcode, which includes Allawah and Carlton, two active cases (down from four).
2219 postcode, which takes in Dolls Point, Sandringham and Sans Souci, nine active cases (up from eight).
2221 postcode, which takes in Blakehurst, Carrs Park, Connells Point, five active cases (up from four).
2222 postcode, which takes in Penshurst, six active case (up from four).
2208 postcode, which takes in Kingsgrove, two active case (up from one).
2205 postcode, which takes in Wolli Creek and Arncliffe, nine active cases (unchanged).
Details: To view the heat map visit the NSW Health website or click here.
Sign up for our newsletter to stay up to date.