Why Is My Pool Losing Water? The Most Common Places Pools Leak

If your Oklahoma pool is dropping more than about a half inch of water a day and you've ruled out evaporation with a bucket test, you have a real leak. The good news: pools only leak from a handful of places. After 13+ years building pools, Kenny knows how each part is put together — and that's how you find where the water is really going instead of guessing.

The most common places a pool leaks

• The skimmer — the seam where the plastic skimmer meets the concrete shell is the single most common leak. It cracks and separates over time, and the water disappears behind the wall where you can't see it.
• Return lines and fittings — the jets that push water back into the pool, and the fittings behind them, loosen and leak.
• The light niche — the housing your pool light sits in, and the conduit running to it, is a classic hidden leak path.
• Underground plumbing — the suction and pressure lines buried between the pool and the equipment pad. These leaks never show on the surface, which is why they go unfound for years.
• The main drain — the drain and its plumbing at the deepest point of the pool.
• The shell or liner — cracks in a gunite/plaster shell, or tears and bad gaskets in a vinyl liner (around the skimmer, returns, and steps especially).
• The equipment pad — the pump, filter, valves, and unions above ground. This one you can sometimes spot yourself as a wet spot or drip.

How the leak level tells you something

Where the water stops can point to the problem. If the pool drains to the level of the skimmer mouth and stops, the leak is likely at or around the skimmer. If it stops at a return jet, suspect that fitting. If it keeps dropping below all the fittings toward the main drain, you're likely looking at the main drain or deep plumbing. It's a clue, not a diagnosis — but it's where a pro starts.

How we actually pinpoint it

Finding the spot precisely is what professional detection is for. We pressure-test the plumbing to isolate which line is failing, use electronic listening equipment to hear water escaping a pressurized pipe underground, and run dye testing at suspected spots to watch the water pull the dye into the leak. That combination finds it without saw-cutting your deck to look.

Don't ignore a slow leak

A leak that looks small still wastes water and chemicals every day, and a plumbing or structural leak can quietly undermine the soil and deck around your pool. Finding it early is almost always cheaper than waiting.

Get it found and fixed

Our flat-rate pool leak detectionis $499 inground or $399 above-ground, with the vessel repairs we can make included and no trip charges. We find it and fix it for one price. Call us and we'll get you on the schedule.