Fatberg the size of four buses likely birthed poo balls that closed Sydney beaches
Exclusive: Secret report suggests fats, oils and grease accumulate in ‘inaccessible dead zone’ at Malabar plant, then dislodge when pumping pressure ‘rapidly increases’
TL;DR
- A large fatberg is suspected as the cause of debris balls on Sydney beaches.
- Fixing the fatberg requires shutting down the outfall, which could close beaches for months.
- The fatberg is located in an inaccessible part of the Malabar deepwater ocean sewer.
- The debris ball events in October 2024 and January 2025 are linked to power outages and wet weather that dislodged the accumulated FOG.
- Sydney Water's treatment process is only primary, unlike secondary treatment in other cities.
- FOG and volatile organic compounds in Sydney's wastewater system have increased significantly over the past decade.
- Sydney Water plans to continue cleaning accessible areas and educate the public on proper disposal.
- A $3 billion investment program over 10 years is planned to reduce wastewater discharge.
- Critics call for modernization of the sewerage system with higher treatment levels and more recycling.