Detection of leaks in water supply systems is an important part of repair and maintenance of buildings, as undetected leaks can lead to water loss, structural damage, dampness, corrosion, and increased maintenance costs. The procedure of detecting leaks involves systematic inspection, testing, and use of suitable tools to identify the exact location and cause of leakage. The first step in leak detection is a visual inspection of the water supply system. All visible pipes, joints, fittings, valves, overhead tanks, underground tanks, and sanitary fixtures are carefully examined. Signs such as damp patches on walls or floors, water stains, peeling paint, mold growth, corrosion on pipes, or continuous dripping from taps indicate possible leakage. In concealed plumbing systems, dampness or discoloration of walls and ceilings often provides early clues. The next step is checking water meters to identify hidden leaks. All water outlets inside the building are closed, and the water meter is observed. If the meter continues to register water flow, it indicates leakage somewhere in the system. This method is simple and effective for detecting leaks in underground or concealed pipelines. For buildings without meters, sudden increase in water bills can also suggest