Happens when the downstream pressure in a property's plumbing system (from pumps or boilers) exceeds the pressure of the municipal supply, forcing water backward.
Essential Guide to Backflow Testing in Leppington Ensuring the safety and purity of your drinking water is a critical responsibility for every property owner in Leppington . is a specialized plumbing service designed to prevent contaminated water from flowing backward into the main water supply . In areas like Leppington, which falls under the jurisdiction of Sydney Water , annual testing is not just a safety recommendation—it is a mandatory legal requirement for properties with medium to high-hazard ratings. What is Backflow and Why Does It Occur?