Most pool companies pressure-test the plumbing system as a whole — which confirms a leak exists somewhere but doesn’t tell you which line. LeakLab isolates each line independently: skimmer lines, return lines, main drain lines, spa lines, in-floor cleaning system zones, and water feature lines are each capped and pressure-tested separately. This identifies the exact failing line, eliminating guesswork and the unnecessary demolition that comes from not knowing which line to repair.