Hidden leaks divide into two families: supply-side leaks (pressurized, constant, meter-spinning) and drain-side leaks (intermittent, appearing only when fixtures run). The detection approach differs completely — pressure testing and acoustic listening for supply, cameras and flood testing for drains — which is why the diagnostic visit matters more than the repair.
In San Juan we run both disciplines daily, on slab foundations and pier-and-beam alike. Call (833) 834-1087 and we’ll determine which family your leak belongs to before quoting anything.
How leak and slab detection works
The meter test is step zero and homeowners can do it themselves: turn off all water, including ice makers and irrigation, and watch the meter’s low-flow indicator. Movement means a supply-side leak between the meter and the house. No movement with a high bill points at toilets, irrigation, or intermittent drain issues instead.
When you call us, that test result focuses the visit immediately. We then isolate the house from the service line — if the meter still creeps with the house valve closed, the leak is in the yard line; if it stops, it’s inside. Half the search area eliminated in minutes, before any instrument comes out.
Signs you need leak and slab detection in San Juan
Call for detection if any of these fit your San Juan home:
- Foundation soil that stays wet or shifts near the house.
- Hot water that arrives slower than it used to, hinting at a hot-line leak.
- A water bill that jumps with no explanation.
- Musty odors or mold spots appearing near plumbing walls.
What is included
When you call about a hidden leak in San Juan, this is what we do:
- Water meter isolation testing
- Slab leak pinpointing before concrete is cut
- Sewer camera inspection for drain-side suspects
- Toilet, irrigation, and fixture elimination checks
- Photo documentation of all findings
- Repair plan with upfront flat-rate pricing
Rio Grande Valley: how local conditions shape leak and slab detection
Hidden leaks follow local geology. Here is how the Rio Grande Valley creates them in San Juan:
Humidity turns small leaks into big problems fast. A pinhole that would be a nuisance in a dry climate becomes a mold bloom in days here — which makes early detection worth more in the Valley than almost anywhere. The meter test is the highest-value early warning available.
What affects the cost of leak and slab detection in San Juan
Cost factors are the leak’s location, the line’s condition, and the repair method the evidence supports. Under-slab in the middle of the house costs more to access than a wall line; a line with multiple weak points pushes toward rerouting rather than another spot fix. Each variable is visible in the findings we show you.
What never inflates the price is uncertainty — because there isn’t any by quote time. The detection visit eliminates the guessing, so the repair quote is built on a marked location and known pipe condition, locked before work begins.
Common questions
Can you detect leaks in walls too?
Yes — acoustic listening and thermal imaging work through drywall as well as slab, and moisture meters map how far water has traveled inside the wall cavity.
What if the leak is in the yard service line?
The meter isolation test finds that in minutes: if the meter creeps with the house valve closed, the leak is between the meter and the house. Yard-line repairs avoid interior demolition entirely.
Do I need detection or just a repair?
Detection first, always, for hidden leaks. Repairing without pinpointing means opening concrete on a guess — the detection visit is what makes the repair surgical and fairly priced.
Why is leak detection urgent in this climate?
Humidity converts small leaks into mold within days. Finding a leak in weeks versus months is the difference between a pipe repair and a remediation project.
How long does detection take?
Most residential investigations complete in a single visit. Larger homes or multiple suspect areas take longer, and we will tell you the plan before starting.
More plumbing help in San Juan
Start at our San Juan plumber hub or the Leak & Slab Detection guide. Related services in San Juan: Emergency Plumbing in San Juan, Water Heater Installation & Repair in San Juan, Drain Cleaning in San Juan, Sewer Line Services in San Juan, Whole-Home Repiping in San Juan, Gas Line Services in San Juan, Water Treatment & Filtration in San Juan. Leak & Slab Detection nearby: Leak & Slab Detection in San Benito, Leak & Slab Detection in Alton, Leak & Slab Detection in Alamo, Leak & Slab Detection in Mercedes, Leak & Slab Detection in Donna.
One call is all it takes in San Juan. (833) 834-1087 reaches a live dispatcher around the clock — no voicemail, no waiting until morning. Upfront pricing, local techs, and help rolling to your door across the Rio Grande Valley.
Other services in San Juan.
Emergency Plumbing
Emergency plumbing is immediate response to water damage in progress — burst pipes, major leaks, sewage backups, and total water loss. You reach a live dispatcher who triages the situation on the call and routes a stocked truck immediately, so the water stops as fast as possible.
Water Heater Installation & Repair
A water heater supplies hot water to every faucet, shower, and appliance in your home — tank models store it, tankless models heat it on demand. We repair failed burners, thermostats, and heating elements, and size replacements to your household’s actual hot-water demand so the showers stay hot.
Drain Cleaning
Drain cleaning removes the blockages that slow or stop wastewater flow — grease, soap, hair, scale, and root intrusion. We match the tool to the clog: drain snakes for branch lines, inspection cameras for diagnosis, and hydro jetting to scour the pipe wall on main-line stoppages.
Sewer Line Services
A sewer line carries all wastewater from your home to the city main, so a failure here backs up every drain at once. We inspect with an HD camera first, then clear root intrusion or repair damaged sections — replacing the line only when the pipe itself is truly done.
Whole-Home Repiping
Repiping replaces every water supply line in the home at once, ending the cycle of one leak after another. We install new PEX or copper pipe through minimal wall openings, pressure-test the system, and leave it up to current code.
Gas Line Services
Gas lines feed stoves, water heaters, dryers, and grills — and any work on them has to be exact. We repair damaged sections, extend lines for new appliances, and set new appliance hookups, pressure-testing every joint before the job is signed off.
Water Treatment & Filtration
Water treatment conditions your supply water so mineral hardness and contaminants stop damaging fixtures, appliances, and the water heater. We test your water first, then install whole-home softeners and filtration matched to what the test shows.
Leak & Slab Detection in these other communities:
A plumbing problem gets worse, not better.
Leaks soak through framing and flooring the longer they run. One call puts a licensed plumber on the way — day, night, weekends, holidays.
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