Rains fail to lift dam levels
stream flow into Perth’s drinking water dams – but this is the amount Perth consumes on a hot summer’s day, according to Water Corporation spokeswoman Clare Lugar.
“Declining rainfall over the past decade has meant the soils in our catchment areas are a lot drier than they used to be and act like huge sponges, soaking up the rainfall,” she said.
“Our catchments need a lot more rainfall to soak into the soils and then release water into streams that flow into our dam.”
Last financial year, Perth’s dams only provided 7 per cent of total water supply. Desalination was the largest source of water at 47 per cent and groundwater formed 46 per cent.
Serpentine Dam contributed about 9 billion litres last financial year, which is about a billion more than the previous year.
“We want to remind the community the two-day-per-week sprinkler roster is currently in place across Perth, so ensure your sprinklers are set for the correct day and only operate before 9am or after 6pm,” Ms Lugar said.