Slab Leak Detection ProsSlab Leak Detection Lewisville: Pinpointed Before Concrete Is Cut
Slab leak detection Lewisville residents rely on means finding the exact leak before anyone breaks the floor. That is all our Lewisville slab leak detection network does. A slab leak is a broken pipe beneath your home's concrete foundation, and in Lewisville it can run for months unnoticed. Non-invasive detection by a licensed plumber locates it precisely, so you know exactly where it is before anyone touches your floor.
- 1CallDescribe what you’re seeing
- 22–4 hoursLeak confirmed and pinpointed
- 3ReportExact spot marked, in writing
- Acoustic listening
- Thermal imaging
- Tracer gas
- Pressure & hydrostatic tests
- Camera inspection
Your Lewisville slab leak detection visit, start to finish
Lewisville slab leak detection follows the same careful path on every job, but the details depend on your home. A licensed plumber who serves Denton County arrives with pressure gauges, an acoustic ground microphone, a thermal camera and, when needed, tracer gas equipment.
The first hour is spent proving there is a leak and narrowing it to one line. Every fixture is turned off, the meter is watched, and the hot and cold sides are separated at the water heater. Only then does the search move to the floor.
Next, the line is traced and the slab is scanned. Acoustic listening finds the point where escaping water is loudest, thermal imaging confirms hot-water leaks, and tracer gas handles the quietest leaks. Two readings must agree before the spot is marked.
You keep a written report: which line leaks, where, how it was confirmed, and photos. It is the document insurers and water utilities ask for, and it gives any repair plumber a precise starting point.
We arrange slab leak detection for homes all over Lewisville, from neighborhoods near Old Town Lewisville to those around Toyota of Lewisville Railroad Park. Most visits take two to four hours.
Lewisville slab leak detection starts with these signs
- Water bill jumped with no change in use
- Meter keeps moving with everything off
- Warm spot on tile, wood or carpet
- Running-water sound when nothing is on
- Water heater runs constantly
- Damp carpet, cupped wood, musty smell
- Sewer smell or slow drains
- New cracks or sticking doors
My Lewisville water bill doubled this month. Where do I start?
Check the easy things first: a running toilet, a dripping outdoor faucet or the sprinkler system. Then turn everything off and watch the meter for an hour. If it still moves, the leak is hidden, often under the slab, and it's time for detection.
What makes slab leak detection in Lewisville different
Collin and Denton County sit on Blackland Prairie clay, among the most expansive soils in Texas. As it swells and shrinks, pipes under the slab bend, rub against concrete and pull at their fittings.
Lewisville's older neighborhoods near Old Town have cast-iron drains, while newer areas have copper and PEX.
Serving homes across Lewisville, including neighborhoods near Old Town Lewisville, Lewisville Lake, Toyota of Lewisville Railroad Park.
Does a brand-new home in Lewisville need slab leak detection?
Not routinely, but new homes do leak, usually at a fitting or from a pipe nicked during construction. If you see a warm spot or a high bill, test right away and tell your builder while the warranty applies.
Slab leak detection specialist vs. general plumbing contractor in Lewisville
Many general plumbers do excellent work. The difference is focus and equipment when the leak is hidden under concrete.
| What matters | Slab leak detection specialist (our network) | Typical general plumbing contractor |
|---|---|---|
| Main focus | Only finding hidden leaks under slabs | Installs, repairs and remodels across all plumbing |
| Detection tools | Acoustic ground mics, thermal imaging, tracer gas, line tracing | Varies; often a pressure test and visual inspection |
| Locating the leak | Pinpointed before any concrete is opened | May open the floor in more than one place to search |
| Drain leaks under slab | Hydrostatic, isolation test and camera find the broken section | May recommend replacing the whole drain system |
| After the leak is found | Exact spot marked and documented; you choose who fixes it | Often moves straight into its own repair or repipe |
| Paperwork | Written report with photos for insurance and water credits | Usually an invoice only |
| Typical cost to locate | $150–$600 in most Lewisville homes | Varies; exploratory openings add cost |
Tip: whoever you call, ask which detection methods they use and whether they’ll pinpoint the leak before opening the slab.
Every part of slab leak detection in Lewisville
We do one thing: find leaks under concrete slabs. Every visit is done by an independent, licensed Texas plumber who specializes in leak detection, so you pay to find the leak, not to break concrete searching for it.
Water Line Leaks
Find leaks in the pressurized supply lines buried in or under your slab.
Hot-Water Line Leaks
Thermal imaging traces warm spots and leaking hot-water runs.
Drain Line Leaks
Hydrostatic and isolation tests find drain leaks that never show on your meter.
Pressure Testing
Confirm a leak exists and measure how fast the line loses pressure.
Line Isolation & Tracing
Separate hot, cold and branch lines and map where they really run.
Acoustic Pinpointing
Ground microphones hear escaping water through the concrete.
Tracer Gas Detection
For very quiet leaks and plastic pipe, gas rises at the leak point.
Written Leak Report
Exact location, readings and photos for your insurer or water utility.
A 2-hour leak test for Lewisville homes
You can often confirm a hidden leak yourself in about two hours, with nothing more than your water meter.
- Turn everything off. Faucets, dishwasher, washer, ice maker, sprinklers and pool fill.
- Find your meter. It is usually in a box near the street. Read the number or take a photo.
- Wait one to two hours. Use no water at all during that time.
- Read it again. If the number moved, or the small leak indicator is spinning, water is escaping.
- Narrow it down. Close the house shut-off. If the meter keeps moving, the leak is in the yard line; if it stops, it is inside, possibly under the slab.
Nine steps of slab leak detection in Lewisville
The same nine steps on every job, so you know what’s happening and why. Read the full process →
Listen and look first
The plumber hears what you've noticed and walks the home to look for clues.
Rule out the easy causes
Toilets, faucets, irrigation, the water heater and the AC drain are checked so you don't pay to search for the wrong leak.
Confirm the leak with the meter and a pressure test
A meter test and a pressure test prove water is escaping from the plumbing.
Isolate the leaking line
Hot, cold and branch lines are separated so the search focuses on the one that's leaking.
Test the drains, if needed
Drain leaks don't show on the meter, so they get their own hydrostatic test and camera check.
Trace the pipe's route
An electronic locator maps where the leaking line actually runs under the floor.
Pinpoint the exact spot
Acoustic listening, thermal imaging and tracer gas find where the water is escaping, and two methods must agree.
Scan the slab and mark the leak
The slab is checked for steel tendons and rebar, and the leak is marked on the floor.
Get your written report
You receive the leak's location, the line, the readings and photos in writing.
Lewisville slab leak detection cost
Published national and Texas ranges. You get the price before the visit.
Slab Leak Detection
- Meter & pressure testing
- Hot/cold line isolation
- Acoustic & thermal pinpointing
- Leak marked on the floor
- Written report with photos
What raises the price
- Larger homes with more lines
- More than one leak
- Very quiet leaks needing tracer gas
- Drain testing (a hydrostatic test is typically about $250)
- After-hours visits
What it doesn’t include
- Breaking or patching concrete
- Pipe repair or rerouting
- Foundation work
- Mold cleanup
We only do detection. You get the exact location and choose who does any repair.
Sources: This Old House, Angi/HomeAdvisor via Bob Vila.
Will I still pay for detection if no leak is found?
Usually yes, because detection is a diagnostic service. If no slab leak is found, you still learn where the water isn't going, which rules out costly guesses. Ask about the fee before the visit.
Water coming up through the floor in Lewisville?
Shut off the main water valve and call now. We’ll connect you with a licensed slab leak specialist.
Pipes, home ages and slab leak detection in Lewisville
Across Lewisville: Older 1960s–80s homes with cast iron and copper, and brand-new post-tension slabs with PEX. Knowing what pipe is under your floor tells the plumber which slab leak detection method will work best.
Copper supply lines
Common in homes built from the 1960s through the early 2000s. Copper wears where it rubs against concrete or gravel, and pinhole leaks show up as homes pass 25–40 years old. Acoustic listening finds them well.
Cast-iron drains
Standard in homes built before about 1980. Cast iron rusts from the inside and cracks as the slab moves. Drain leaks never show on the water meter, so a hydrostatic test and camera inspection are used.
Polybutylene
Gray plastic pipe installed from about 1978 to 1995. It is known for failing at fittings. Tracer gas and pressure testing are often the best ways to locate leaks in it.
PEX and newer plastic
Used in most homes built since the 2000s, often run from a manifold. PEX leaks are usually at fittings or where the pipe was nicked during construction. Each run can be pressure-tested from the manifold.
Insurance and slab leaks in Texas
Coverage depends on your policy and the cause. The Texas Department of Insurance has long said the standard HO-B policy covers damage to the dwelling, including the foundation, from an accidental discharge of water from a plumbing system. Many policies still exclude wear and tear, the pipe itself, and mold.
What helps your claim: shut off the water, protect your belongings, and get the leak documented by a licensed plumber before the adjuster visits.
Ask for a leak credit
Many Texas cities and MUDs credit part of the water lost to a hidden leak once it’s repaired. Most want a paid plumber’s invoice and a request within a set number of days, and allow one credit a year.
Keep your invoice, and call your utility soon after the repair to ask about its rules and deadline.
Slab leak detection in Lewisville, done the careful way
Most of the cost of a slab leak comes from searching for it and repairing the floor afterward. Slab leak detection is all we do, so you get an exact location before anyone touches your floor.
Licensed Texas plumbers
All work is done by independent plumbers licensed in Texas who will show their license number on request.
Typical prices up front
Know the usual range before anyone arrives, and get a written quote before work starts.
Documentation you can use
Photos, readings and a written summary for your insurer or your water utility’s leak credit.
Same day, this week, or keep watching? A Lewisville guide
Call the same day
- Water coming up through the floor
- Sewer smell inside the home
- Meter spinning fast with everything off
- A large warm or wet area
Shut off the main water valve first.
Book this week
- Meter moves slowly with everything off
- One warm spot on the floor
- Water heater running constantly
- Bill up for a second month
Keep watching
- A single high bill with an explanation
- Hairline cracks with a normal meter test
- Slow drains in one fixture only
Repeat the meter test monthly.
Questions about slab leaks in Lewisville?
Still not sure if you have a slab leak? Call and describe what you’re seeing. A licensed plumber will tell you whether it’s worth a visit.
Call (000) 000-0000How can I tell a sprinkler leak from a slab leak in Lewisville?
Shut off the irrigation valve and do a meter test. If the meter stops, the leak is in the sprinkler system. If it keeps moving with every fixture off, the leak is on the house side, possibly under the slab, and needs isolation testing.
Does Blackland Prairie clay make slab leaks more common in Lewisville?
It's a big factor. Blackland Prairie clay can swell and shrink more than almost any soil in Texas. Over years of wet and dry cycles, that movement stresses the pipes in and under your slab.
My new home in Lewisville already has a leak. Is that normal?
It happens. In new homes, leaks usually come from a failed fitting, a nicked pipe or settling soil, not worn-out pipe. If you're still under the builder warranty, document the leak and contact the builder before any repair.
Is a slab leak in my Lewisville home an emergency?
Water coming up through the floor, a sewer smell or a fast-spinning meter needs help the same day. A slower leak should still be checked within days, because water under the slab can wash out soil and grow mold.
How long does slab leak detection take in Lewisville?
Most leaks are located in two to four hours. Complex homes, multiple leaks or drain problems can take longer. You'll get the results, the exact location and a written report before anything is opened.
How much does slab leak detection cost in Lewisville?
Detection usually runs $150–$600, depending on the size of the home, the number of lines and how hard the leak is to hear. You get the price before the visit and a written report of what was found.
Last updated 2026-10-23