Isolating the section
The system is pressure tested and closed off in sections to narrow down where the loss is happening — supply, irrigation, the line under the slab or a fixture that is passing water quietly.
Leak Detection and Repair
A water bill that jumped, a damp patch with no obvious source, or the meter dial turning with everything switched off. An independent plumber should trace the leak to its actual location before anything is cut open.
- Plumbing Referral Service
- Independent Pros
- Availability Varies
Signs That Need Attention
- A water bill that rose with no change in how you use water
- The meter still moving after every fixture is shut off
- A musty smell in one room that never clears
- Paint bubbling, drywall staining or baseboards swelling
- A patch of lawn that stays green and soft through August
You can run the first test yourself. Turn off every tap, appliance and irrigation zone, then look at the water meter in the box at the curb. Most meters have a small triangular or star-shaped dial that spins on any flow at all. If it is turning, water is leaving the system somewhere between the meter and the fixtures, and that is worth a call.
What the Service Includes
The point of leak detection is to open the smallest hole in the right place. Ask for the locating work and the repair to be quoted separately so you can see both.
Locating without demolition
Acoustic listening equipment, pressure testing and thermal checks are used to fix the position before any tile, drywall or concrete is touched. Cutting first and looking second is how small leaks become large repairs.
Repairing and retesting
Once the failed section is replaced, the system is repressurized and the meter checked again. If the dial still moves, the job is not finished; ask the plumber to confirm this on the day rather than discover it on your next bill.
Your Repair Options
Leaks in San Antonio tend to fall into a few familiar groups. In older houses inside Loop 410, galvanized supply pipe corrodes from the inside and eventually weeps at a threaded joint. In newer slab homes north and west, the leak is usually in a supply line running below the concrete, where clay soil moving with the seasons has stressed a joint. Irrigation systems are a third group and account for a surprising number of jumping bills, especially after a dry summer when a cracked head or valve goes unnoticed.
What the detection finds decides what the repair looks like. A leak under the foundation is handled as slab leak repair, with real choices about rerouting versus opening the slab. A visible split in an accessible line is burst pipe repair. If the loss turns out to be between the meter and the house, it becomes water line repair out in the yard. A fixture that is passing water rather than leaking is usually toilet and faucet repair, and a running toilet flapper is the most common culprit of the lot.
If the damp is near the water heater, the repair versus replacement comparison covers how to tell a fitting leak from a failed tank. Detection calls cover San Antonio and communities including Alamo Heights and the rest of the listed areas.
Leak Detection Questions
What affects the cost of leak detection?
How accessible the system is and how much has to be ruled out. A leak under an exposed sink is found in minutes; a loss somewhere between the meter and the house takes isolation and testing. Ask for a quote on the locating work first and on the repair once the leak has actually been found.
Can you find a leak without breaking anything?
Locating it, yes — acoustic and pressure methods work through tile, slab and drywall. Repairing it eventually needs access, but the point of locating first is that the access is a small, deliberate opening in the right place rather than exploratory holes across a room.
Should I shut the water off while I wait?
If water is visibly running or a ceiling is sagging, yes - shut the main at the meter box and drain the lines from the lowest faucet. For a slow leak that has been there for weeks, leaving the water on so the plumber can pressure test is usually more helpful. Say which situation you are in when you call.
Why did my water bill jump with no leak I can see?
Because most leaks are not visible. Irrigation, a toilet flapper passing water quietly and a supply line under a slab are the three that account for most unexplained bills. Check the meter with everything off first, then note down what the dial does - it is the single most useful thing you can tell the plumber before the visit.
Arrange leak detection in San Antonio
Call and describe what you noticed to reach an independent plumber.