There are big fines for those who either DIY or do it wrong. Be sure to use a licensed plumber who does it right and you won’t face any penalty.
As well as needing to be a specified distance from the water meter there needs to be a dual check backflow prevention valve installed. The image above shows one installed incorrectly which we are currently in the process of rectifiying. The simple ball valve has been connected to the elbow of the water meter rather than spaces away from it.
For cut ins we recommend Andy of Orfords plumbing based in Yanchep 0416289860