A procedure involving the introduction of concentrated coloring agents near suspected points of water loss in a swimming pool. Observation of the dye’s movement can indicate the presence and direction of a leak. For example, placing a small amount of dye near a skimmer or light fixture and observing it being drawn into a crack or opening suggests a compromised area.
This method offers a relatively inexpensive and non-invasive means of identifying leaks in pool structures and plumbing. Its use minimizes unnecessary excavation or repairs by pinpointing the source of the water loss. The underlying principle has been employed for decades, adapting over time with improved dye formulations and application techniques, making it a reliable tool for pool maintenance professionals and homeowners alike.