Leak Detection San Jose — Find Hidden Leaks Fast
Need leak detection San Jose homeowners can trust? We use thermal imaging and acoustic tools to find hidden water leaks without tearing up your walls or floors.
When You Suspect a Leak
A hidden water leak is one of the most stressful plumbing problems. You can hear water running. The bill keeps climbing. There's a damp spot on the ceiling. But you can't see where it's coming from. Our full range of plumbing services means once we pinpoint the source we can fix it right away.
We find leaks fast and without damage. Our techs use thermal cameras, acoustic sensors, and pressure testing to pinpoint the exact location. No guessing. No tearing open walls hoping to find the right spot. Most leaks get located within 30 to 60 minutes of arrival.
Once we find it, you get fixed-price repair options. Most leaks can be fixed the same day we find them.
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Signs You Have a Hidden Water Leak
A leak rarely announces itself with a flood. The signs are usually small and easy to miss. Catching them early saves thousands in damage.
Unexplained High Water Bill
A sudden spike in your water bill with no change in habits is the most common sign. A small slab leak can waste 100 gallons a day without making a sound. If your bill jumps by $30 to $50 with no explanation, you likely have a leak somewhere.
Damp Spots on Walls or Ceilings
A wet patch on the wall or ceiling means water is coming from a pipe behind it. The spot may grow, then shrink as the drywall absorbs and releases moisture. By the time you see staining, the leak has been running for weeks.
Mold or Mildew Smells
A musty smell with no obvious source often points to a hidden leak. Water inside walls or under floors creates the perfect environment for mold within 48 hours. The smell shows up before any visible damage.
Sound of Running Water
If you hear water running when no fixtures are on, you have a leak. The sound is usually a faint hiss or trickle inside a wall, ceiling, or floor. It's most noticeable late at night when the house is quiet.
Pressure Loss From Hidden Leaks
A drop in pressure at one or more fixtures can mean a leak somewhere upstream. The water that should be reaching your faucet is escaping into a wall, slab, or yard instead.
Types of Leaks We Find
Not every leak is in the same place. Each type has its own clues and detection methods.
Slab Leaks
A slab leak is a leak in a pipe under your concrete foundation. Common in San Jose homes built on slab-on-grade foundations, especially in Almaden Valley and South San Jose where clay soil shifts pipes over time. Warm spots on the floor are the classic sign. When the leak is confirmed, we move quickly to slab leak repair so damage doesn't spread.
Wall and Ceiling Leaks
Leaks behind drywall come from supply lines, drain pipes, or fixtures in upstairs bathrooms. We use thermal imaging to find the wet area, then pinpoint the exact spot before opening the wall.
Underground Pipe Leaks
A leak in a buried supply line between the meter and the house can run for months without notice. The clues are wet patches in the yard, a meter that runs when no fixtures are on, and rising bills.
Pinhole Leaks
Pinhole leaks are tiny holes that form in copper pipes from the inside out. Hard water in San Jose makes them more common in homes 20 years and older. A single pinhole leak can ruin a wall before it's discovered. Once one shows up, others usually follow within a year or two. Homes across the foothill area of Evergreen and the ranch homes of Cambrian Park see this pattern often, sometimes making whole-house repiping the smarter long-term choice.
Our Leak Detection Methods
For leak detection San Jose homes, we use four main tools depending on the type of leak. Each one finds something the others can't.
Acoustic Detection
Acoustic sensors pick up the sound of water escaping a pressurized pipe. Even a small leak makes a faint hiss that humans can't hear. The equipment amplifies it and tells us exactly where the noise is coming from. This is the fastest way to find supply line leaks.
Thermal Imaging
A thermal camera shows temperature differences on walls, ceilings, and floors. Hot water leaks show up as warm patches. Cold water leaks show up as cool ones. The image tells us where to look without opening anything.
Pressure Testing
We isolate sections of your plumbing and pressurize them with air. A drop in pressure tells us which section is leaking. This works well for slab leaks where we need to narrow down the location before pinpointing. The test takes about 30 minutes and gives us a clear answer.
In-Wall Camera Scope
For drain and sewer line leaks, we run a camera through the pipe. The camera shows cracks, breaks, and disconnected joints. We mark the location from above using a transmitter, so the repair crew knows exactly where to dig. No exploratory digging means no extra cost.
Leak Detection Cost in San Jose
Pricing depends on the type of leak and how much investigation is needed. Here are typical ranges for leak detection San Jose homeowners can expect:
| Service | Typical Price Range | Notes |
|---|---|---|
| Standard leak detection | $250–$450 | Time to find + written report |
| Slab leak detection | $350–$650 | Acoustic + thermal combo |
| Underground line detection | $400–$750 | Buried supply line outside |
| Camera inspection (drains) | $250–$450 | In-pipe camera scope |
These prices include the time to find the leak and a written report. Repair costs are quoted separately once we know what we're dealing with. You see the full price before any work starts.
What Happens After We Find the Leak
Finding the leak is half the job. Fixing it is the other half. Once we know exactly where the leak is, we walk you through your repair options.
A small pinhole in an accessible copper line is usually a quick spot repair. A slab leak might call for rerouting the line through the attic instead of breaking up the foundation. A leaking sewer line may need spot repair or a trenchless replacement.
We give you fixed pricing for every option. No pressure to pick the most expensive one. Most repairs can be done the same day we find the leak. For bigger jobs like full repipes or major sewer work, we schedule the repair for the next available slot. If the situation is urgent, our 24/7 emergency plumbing team can respond after hours for any active water emergency.
Frequently Asked Questions
How does leak detection San Jose work without tearing up walls?
We use thermal imaging cameras and acoustic listening devices. Thermal imaging shows temperature differences from water behind walls. Acoustic equipment listens for the sound of water moving inside pipes. Both let us pinpoint leaks without exploratory damage.
How accurate is leak detection?
Modern equipment is very accurate. We typically locate leaks within a 6-inch radius. Once we mark the spot, the repair opening is usually about the size of a hand instead of opening a whole wall.
How much does leak detection cost?
Standard leak detection service runs $250 to $500 depending on the area to scan. Slab leaks and underground leaks cost more because they require additional equipment. The fee is often credited toward the repair cost.
How fast can you find a hidden leak?
Most leaks get located in 30 to 60 minutes. Larger areas or harder-to-reach systems take longer. Once we find it, we explain exactly where it is and walk you through the repair options before any wall opening starts.
What are the most common signs of a hidden leak?
A sudden jump in your water bill is the top sign. Damp spots on walls, ceiling stains, musty smells, warm spots on tile floors, and the sound of running water with no fixtures on are all warning signs.