Level one restrictions include the enforcement of Water Wise rules such as using sprinklers and fixed hoses for two hours a day, and hand-held hoses only between the hours of four and nine in the evening.
"Why is the NSW Government dragging its heels on reducing water usage in Sydney when Melbourne residents use 30% less water per person".
They are an important element of Greater Sydney's drought response as they help reduce water demand when we're not getting enough rain.
With the drought showing no sign of abating, state authorities said residents can only water their lawns and gardens between 10am and 4pm.
"Regional NSW has been experiencing a record drought".
Under the city's Metropolitan Water Plan, restrictions are set to come into effect when dam levels drop to less than 50 per cent.
Sydney is not supposed to face formal restrictions until Warragamba Dam drops to 50 per cent capacity.
- Permits are needed to fill new pools greater than 10,000 litres.
The restrictions will come into force on Saturday, and will apply to everyone in Sydney itself, as well as the Blue Mountains and the Illawarra.
"Sydney Water does have a team of community water officers that will be out in the community giving advice on how to comply with water restrictions", Port said.
There will, however, be a three-month grace period before fines are imposed.
Those caught doing the wrong thing can be fined up to $220, and businesses flouting the rules face $550 fines.