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Additional sewage debris balls have been discovered on Malabar Beach and Foreshore Beach in Botany Bay as of Monday.
Sydney Water has put up warning signs advising the public to avoid handling any of these debris balls while they conduct an investigation into the matter.
“The precise source and reason for this occurrence are still being examined,” a representative from Sydney Water stated.
“Our teams have been actively present at these locations for several days, spearheading coordination and cleaning efforts on the beaches. This includes collaboration with local councils for visual inspections, collecting and removing the debris balls, and ensuring all materials are disposed of following environmental and safety protocols,” the spokesperson added.
This incident follows a period of intense rainfall and flash flooding in Sydney, where the area experienced up to 140mm of rain in just a few hours.
Authorities believe the weather could be to blame for why four people were attacked by sharks within 48 hours in NSW. 
The sewage debris balls are made up of an increased load of grease, fats and oils that have built up in the state’s wastewater system over time.
Sydney Water said Malabar’s deep ocean outfall likely caused these balls at coastal beaches, while the Mill Stream emergency release structure is responsible for those at beaches in Botany Bay.
”We understand the seriousness of recent debris ball incidents and the need to ensure our network is equipped for Sydney’s growing population,” Sydney Water chief executive Darren Cleary said when the funding was announced last week.