Emergency Leak Detection in Torrance, CA
Electronic and acoustic leak tracing finds slab leaks, hidden pipe leaks, and the source of an unexplained high water bill, without guessing where to dig or cut.
Signs you have a hidden leak
Water bill spiked with no change in use
If your usage habits haven't changed but the bill has climbed, a hidden leak is one of the most common causes.
Warm spot on the floor
A warm patch on a slab floor, especially near the water heater, often points to a hot-water line leaking under the concrete.
Sound of running water
Hearing water movement in the walls or under the floor when every fixture is off is a classic leak signal.
Meter still moving with everything off
If your water meter keeps ticking with all fixtures and appliances shut off, water is escaping somewhere in the system.
Water you can hear but cannot see is worth treating as an emergency, because a hidden leak keeps damaging drywall, flooring, and slabs while you search. Call our 24/7 emergency line and a technician can be dispatched any hour to trace the leak with electronic equipment instead of opening walls.
Active leak and can't find the source?
Our emergency line is open 24/7 to trace hidden leaks in Torrance.
Why leak detection matters more in Torrance
Torrance's mix of housing eras means leak causes vary by neighborhood. Older Old Torrance and Walteria homes are more likely to have aging copper or galvanized supply lines nearing the end of their service life, while homes closer to the coast see faster corrosion on exposed fittings from marine-layer humidity and salt-laden air.
Because Los Angeles County water is naturally hard, mineral buildup can also mask a small leak for longer by slowing the drip before it becomes visible, which is part of why an unexplained bill increase is often the first real sign homeowners notice.
Hollywood Riviera, on the northern edge of the Palos Verdes Peninsula south of Pacific Coast Highway, and nearby Walteria are the parts of Torrance closest to salt air. Exposed hose bibs and outdoor fittings there are the first places we check when a customer reports a slow, hard-to-explain rise in the water bill. Hollywood Riviera addresses carry ZIP code 90277, a Redondo Beach postal address, even though the neighborhood is in Torrance.
How we find a leak without guesswork
Meter and pressure check
We start by confirming water is actually being lost through the system rather than a billing or usage issue.
Electronic and acoustic tracing
Ground microphones and electronic tracing equipment listen for the specific sound of pressurized water escaping underground or in a wall.
Thermal and moisture checks
For slab leaks, thermal imaging and moisture readings help narrow the leak's exact location before any concrete is opened.
Confirm before repair
We mark the confirmed leak location and walk through repair options before any cutting or digging starts.
"My water bill went up and I don't know why"
Many Torrance homeowners call us not because they've spotted a leak, but because something feels off: a bill that doesn't match usage, a meter that won't stop turning, or a vague sense that water is going somewhere it shouldn't. That's exactly what leak detection is for. You don't need to already know where the leak is for us to find it.
It means water is escaping somewhere between the meter and your fixtures, even if nothing is visibly wet yet. That's a strong reason to schedule leak detection before the leak grows or starts causing damage.
Yes. Most leak detection calls start exactly this way. Electronic and acoustic tracing don't require you to know the source in advance.
The cost of leaving a hidden leak alone
A slow leak rarely stays small. Water finding its way into a slab or wall cavity over weeks or months can undermine a foundation, feed mold growth, and damage flooring or drywall well beyond the plumbing itself, turning a leak-detection call into a much larger restoration project if it goes unaddressed.
We also get commercial calls for this, from small Torrance businesses and property managers dealing with an unexplained utility bill increase or a suspected slab leak under a commercial floor. The diagnostic approach is the same as a residential call, though access and shutoff points are usually different in a commercial building.
Clear pricing before work starts
Leak detection is priced based on the scope of the search and confirmed before we start. Call for current rates.
How to tell it is a leak when the meter will not stop
Most callers reach us with the same clue: the meter keeps turning even though nobody is using water. Your account is served by either Torrance Municipal Water or Cal Water, depending on the address, and both read the same kind of meter. A simple check at home tells you a lot before any technician arrives.
Turn every fixture off
Close taps, stop the dishwasher and washer, and make sure no one is filling a tub or running an ice maker.
Watch the low-flow dial
Most meters have a small triangle or dial that spins at the slightest flow. If it moves with everything off, water is escaping.
Close your main valve
Shut the house main, then look again. A dial that stops points to a leak inside the property. A dial that keeps moving points to the line before the shutoff.
Check the toilets
A few drops of food coloring in each tank will show color in the bowl within minutes if a flapper is leaking.
Once you know which side of the shutoff the loss is on, the search gets much smaller. Tell the dispatcher what the dial did. If the loss is on the supply line that runs from the meter to the house, our water line repair page explains what the repair usually involves.
Leaks behind ceilings, garage walls, and in the yard
Hidden leaks seldom announce themselves with a puddle. A brown ring on a ceiling under a bathroom, a damp feel along a garage wall, or a soft patch of lawn near the street are all common clues. Low pressure in one bathroom can also point to a leak feeding that room.
Callers with rentals, duplexes, and small multi-unit buildings often ask where to begin. We start with the meter and the main, then narrow the search unit by unit or line by line. Mention how many units share the water service when you call. A leak that runs under a floor slab is covered in more detail on our slab leak page.
Questions about leak detection in Torrance
Usually, yes. We use electronic and acoustic detection to narrow the location before any concrete is opened.
Most residential leak detection calls are completed in a single visit, though slab leaks in larger homes can take longer to fully trace.
If detection doesn't confirm an active leak, we'll walk you through other possible causes for a high bill, such as a running toilet or irrigation system.
Yes, including commercial leak detection for Torrance business properties, with the same electronic and acoustic tracing methods used residentially.
The price depends on how much pipe has to be traced and how easy it is to reach. A single bathroom wall is a smaller job than a full property survey. The dispatcher asks a few questions and gives a clear price before work starts.
We use electronic and acoustic tracing together with meter and pressure checks. Drain lines can be inspected with a camera. If your situation calls for a different method, the technician explains why before starting.
Tracing narrows the leak to a small area, and the technician marks that spot so any repair opens as little as possible. Depth, pipe material, and background noise all affect how tight the circle gets, so no one can promise an exact distance.
Yes. Finding the leak and fixing it are usually one visit plan. Depending on where it is, the repair may be a spot fix, a reroute, or a larger replacement, and you approve the price first.
Yes. We start over with a meter and pressure check so we are not relying on earlier guesses. That often rules whole sections of pipe in or out within the first hour.
It can be, but not always. We trace leaks on the water lines that serve your home. Sprinkler heads and valves belong to an irrigation contractor, and a meter test tells you quickly which side the water is coming from.
Often called together
Serving Torrance and the South Bay
Stop guessing where the leak is
Electronic leak detection across Torrance and the South Bay.
☎ (310) 424-7510