The plumbing system in a building is perhaps the most important system. It ensures both functionality and comfort in a number of ways. While the water supplied by the city is clean and safe to consume straight from the tap, poor plumbing can make water unsafe. If a building has old plumbing, water may get contaminated. When the pressure of water in the main supply line reduces, water from the building will start flowing back into the main line and cause contamination. To prevent this contamination, the city requires every water consumer to have a back-flow protection device.
The device must be inspected and serviced annually by an accredited plumber to ensure it is in great condition. Backflow Sydney water consumers should know, is a leading cause of water contamination in many parts of the world. Fortunately, city authorities have made backflow prevention devices mandatory.