The use of models to advance on-site and decentralised wastewater risk assessment and planning in Victoria

A wide range of models are available to assist with on-site and decentralised wastewater system planning and design. Others may be used to assist with risk assessment, operation and management. This paper will review the types of models used to date in on-site and decentralised wastewater management and will provide pointers as to the potential future use of models for improved design and management of on-site and decentralised systems in Victoria. Case studies will illustrate the use of models for qualitative and quantitative risk assessment, servicing option selection and decentralised system design and costing in Victoria. The value of models as a cost effective means of achieving these objectives will be emphasised.