How do you find where a leak is under a tiled floor?

To locate a leak under a tiled floor, start by observing for visible signs of water damage, such as discoloration or mold. You can also use a moisture meter to measure levels in different areas of the tile. If the source is still unclear, consider using infrared cameras, which can detect temperature variations caused by moisture. Additionally, listening for dripping sounds or using a dye test in nearby fixtures can help narrow down the leak's location.