Can I find a pool leak without draining the water?

Yes. Most pool leaks can be located without draining — and you usually shouldn’t drain it unless you know what you’re doing, since draining can damage vinyl liners or pop a fiberglass pool out of the ground. Start with the bucket test, then use food coloring near suspected spots like skimmer fittings, light niches, return jets, or cracks. For shell and fitting leaks, the dye trick works fine; for plumbing leaks, you’ll need a pressure test kit or a pro. Save draining only for liner replacement or major structural repairs.