Sydney desalination plant just days from starting up as dam levels dive – Kurnell – Australia Sydney households will have up to $35 added to their annual water bills to cover the restart of the city’s desalination plant, the Berejiklian government says. On Tuesday, Sydney and Wollongong’s dams were 60.3 per cent full, marginally above the trigger point for switching on the desalination plant. On current projections, the sub-60 per cent mark is likely to be crossed this weekend. (LINK). HIWI042019-01-23T08:06:57+01:00