This is where the installation of a backflow prevention device becomes essential. A backflow preventer is a mechanical valve assembly specifically designed to keep water flowing in the correct direction and preventing contaminated water from entering the potable water supply. In Leppington, where the transition from rural land use to high-density residential living is ongoing, the potential for cross-connections is high. Consequently, local water authorities and Sydney Water enforce strict regulations regarding the installation of these devices.

A: Council sends a notice → penalty → possible water disconnection.