As required by Section 11(1) of the Independent Pricing and Regulatory Tribunal Act 1992, the Independent Pricing and Regulatory Tribunal (The Tribunal) has investigated proposals by Sydney Water Corporation Ltd and Gosford City Council (standing reference agencies in Schedule 1 of the Act) for maximum prices for declared backlog sewerage monopoly services. The Tribunal has also considered principles that should guide the pricing of backlog sewerage projects by the four metropolitan water agencies in NSW, namely Sydney Water Corporation, Hunter Water Corporation, Gosford City and Wyong Shire Councils.

Backlog sewerage services refer to the provision of environmentally acceptable sewage management in urban areas that are served by a water authority where this does not already occur. Water is already provided to customers in most backlog areas. Some backlog areas that may be served in future now lack both water and sewerage.