Lifeguards re-opened Coogee Beach at 7am on Thursday after a raw sewage leak on a nearby street closed the beach overnight.

Randwick City Council said it had closed "its beloved Coogee Beach" and the Ross Jones Pool as a precaution.

Coogee Beach has been re-opened after a sewage leak. Credit:Louise Lennerley

Initial testing for pollution by Sydney Water came back negative, but more detailed tests for bacteria will take at least 24 hours.

"Crews responded quickly, unblocking the pipe, barricading the area, and notifying authorities as a precaution," a Sydney Water spokesman said.