Water supply

GBWIM is our national water resource system model, modelling water availability from surface and groundwater sources in a range of climate change scenarios. Storage and transfer infrastructure is modelled at the scale of Water Resource Zones.

The future infrastructure strategies include the possibility of increased use of desalination and/or waste water reuse technologies. GBWIM models domestic and industrial demand for water based on our population and economic projections, and identifies where further action to reduce demand and/or addition supply infrastructure might be needed.

The current emphasis on demand reduction and fixing leaks is delaying the need for major new storage/transfer/reuse infrastructure, but further new investments in supply infrastructure will eventually be required.