Pressure testing tells you what eyes cannot see. The gauge gets connected to the water supply and shows whether the system holds steady or drops over time. A falling reading means water is escaping somewhere in the pipework. This Arana Hills property had signs of possible leaks around the kitchen, laundry and bathroom areas. S&J Plumbing and Gasfitting ran a full leak detection test to pinpoint the issue. The gauge confirmed pressure loss, and further investigation found the source. Catching leaks early prevents water damage and keeps bills under control. Give us a call if you suspect hidden leaks in your home.