Zeus Plumbing provides professional leak detection in San Antonio for the leaks you cannot see: under slabs, inside walls and underground between the meter and the house. The signs are usually there first — a water bill that jumps for no reason, the sound of running water when everything is off, a warm spot on the floor, musty smells, or a meter that keeps spinning with every fixture closed.
Guessing is expensive. Breaking the wrong stretch of slab to hunt for a leak turns a plumbing problem into a flooring and concrete problem. We locate the leak first with electronic and acoustic equipment, mark the spot, and only then talk repair — with written pricing before work begins.
Leak detection services in San Antonio
- Electronic and acoustic leak location
- Slab leak detection
- Water service line leak detection
- Sewer camera inspections
- Water pressure and meter testing
- In-wall and ceiling leak location
- Slab leak spot repair
- Pipe rerouting and repiping options
Found the leak and ready for the fix? See our sewer line repair and plumbing repair pages for what repair looks like.
Every visit starts with a diagnosis, clear options, and written pricing before work begins.
Why pinpointing the leak matters
Most San Antonio homes sit on slab foundations, and most of their water and drain lines run under that slab. A pinhole in a hot-water line can run for months, washing out soil, feeding mold and quietly lifting flooring — while the only visible clue is the water bill. The difference between a located leak and a hunted leak is the difference between one small opening in the concrete and several.
Pinpointing also opens up your options. Once we know exactly where the leak is, a spot repair may make sense — or rerouting the line through the walls or attic may be the smarter long-term fix, especially on older lines with more than one failure in them. We lay out both, with written pricing, and you decide.
Drain-side leaks hide too. A cracked cast-iron drain under a slab leaks sewage into the soil for years and is one cause of the foundation problems San Antonio is known for. A sewer camera inspection finds those failures from inside the pipe, no digging required.
Leak detection FAQ
What are the signs of a slab leak?
A water bill that jumps without explanation, the sound of running water when nothing is on, warm or damp spots on the floor, cracked tiles or buckling wood, low water pressure, and a water meter that keeps moving with every fixture off. Any one of them is worth a detection visit.
How does electronic leak detection work?
We isolate sections of the line, use pressure testing to confirm which run is leaking, then trace it with acoustic and electronic locating equipment that hears and pinpoints the leak through the slab. You get a marked location — not a guess — before any concrete is opened.
Will you have to break up my whole slab?
No. Detection exists precisely to avoid that. Most slab leaks are repaired through one small opening at the located spot, and in many cases we can reroute the line overhead instead and abandon the failed run under the slab entirely.
What does leak detection cost?
It depends on the home and which lines are involved. We diagnose first and give you written pricing before repair work begins — see our repair pages or call 210-698-5003 and we will talk through your situation.
Need leak detection in San Antonio?
Same-day scheduling is available. Call now or request service online and our team will confirm your window.
Request service online · Emergency texts to 726-240-7442 are answered 24/7/365
Want an estimate first? Email pictures or a short video of the problem to service@zeusplumbing.com — we can often provide an estimate without an in-person trip.