Stop Paying for Water You Never Swim In—Sonar, Diver & Pressure Leak Detection in the Bay Area
Find the invisible leak with military-grade sonar, certified divers, and precision pressure rigs—without tearing out your deck. Then fix it the same day.
THE BAY AREA’S WATER REALITY: A SILENT CRISIS IN YOUR BACKYARD
Residential water rates in parts of the Bay Area now exceed $10 per hundred cubic feet. A pool losing just one inch of water every three days can bleed 1,500+ gallons a month—hundreds of dollars vanishing into the earth. Worse, that water erodes sub-base soil, undermines your shell, and can compromise nearby retaining walls and foundations in our seismically active terrain.
Pool Master Dolphin doesn’t guess. We deploy special sonar equipment, underwater divers with leak detection fluids, and controlled air/water pressure testing to locate the exact point of water loss with surgical precision. We serve the entire Bay Area—from San Francisco’s rooftop pools to sprawling South Bay estates—and we’re known for saving patios, landscapes, and sanity.
Our multi-layer leak detection process
No single method works for every leak. We bring them all. That’s what sets us apart.
1. Underwater Pool Search with Diving Equipment & Leak Detection Fluids
Our NAUI-certified commercial diver enters your full pool wearing a mask, comm gear, and high-res camera. We methodically inspect every inch of the shell, return fittings, skimmer throats, light niches, step gaskets, and main drains. Where a crack or separation is suspected, we inject harmless, fluorescent leak detection fluids. The dye gets pulled into the breach instantly—a vivid, recorded trail that proves the leak beyond any argument. No draining, no guesswork, no “maybe.”
2. Special Sonar Equipment for Plumbing Leaks
Water escaping from an underground pipe creates a distinct acoustic signature. We feed sensitive hydrophone arrays into your plumbing lines and listen. Our sonar software translates that sound into a precise location—often within inches—even through concrete decks, stone patios, and deep soil. This is the same principle used in offshore pipeline inspection, brought to your backyard. It works on PVC, copper, flex, and iron. No jackhammers, no trenching until we know exactly where to dig.
3. Air & Water Pressure Testing to Make the Leak Visible
We isolate each plumbing circuit (skimmer line, return line, spa jets, in-floor cleaner, waterfall feed) and pressurize it with regulated air or water. A dropping gauge tells us the leak is in that loop. Then we increase pressure and watch. Air bubbles foam through a crack in the plaster. Water beads form at an underground joint. The leak becomes physically visible, irrefutable. This is often the final, decisive step before repair.
The repair you want, when you want it
Once located, you’re under zero obligation. But most clients choose our in-house repair team because the same crew that found it can fix it—right then. PVC pipe replacements, epoxy crack injections, gasket swaps, hydraulic cement seals. One call, one company, one day. If you decide to wait, you leave with a full diagnostic report, video evidence, and an exact repair quote.
Bay Area Specifics We Understand
Seismic crack patterns: Years of tremors create specific stress fractures around steps, corners, and plumbing penetrations. We know where to look.
Expansive clay soils: Much of the Santa Clara Valley has adobe clay that swells when wet. A small leak can become a large structural shift. We find it early.
Water district rebates: Some local water agencies offer rebates for fixing leaks. We can provide the documentation you need.
Our Services
