"I think a couple of billion spent now on desalination may just be in time to save Sydney."
But recycled water and the Penrith aquifers contributing to supply should also be considered too, and a scalable desalination plant.
The groundwater aquifers in Penrith (West of Syd) should be getting a bit of a top up with all the rain. The aquifers are between Sydney and down from the water catchment area that feeds the dams.
