Slab Leak Repair Pomona, CA
Water running with every tap off, a warm spot on the floor, or a bill that jumped for no reason? We find the leak first, show you the readings, and give you the options and the price in writing before anything gets cut.
Call (909) 415-2610 See repair options
Water running right now?
- Turn off every tap and appliance.
- Watch your water meter. If it still moves, water is escaping.
- Shut the main valve at the house and call us.
A break in a pipe under your concrete floor
Many Pomona homes were built on concrete slabs, with the water lines running underneath. Decades of use wear those pipes, and when one leaks you rarely see it until the floor warms up, the bill climbs, or the carpet gets damp.
A warm spot tells you roughly where to look, not where to dig. Hot water travels along the pipe and heats the concrete away from the actual break. That is why we find the leak in stages and confirm the spot with a second method before opening a single access hole.
Signs you have a slab leak in your Pomona home
One sign alone is not proof. Two or more together is a good reason to test. Here is how to test.
Running water you cannot find
The sound of running or hissing water when every fixture is off.
Warm or hot floor spots
A warm patch on tile, wood or concrete, often over a hot water line.
A bill that climbs
Water use goes up with no change in how you live.
Low pressure everywhere
Pressure drops at every faucet, not just one.
Damp floors and smells
A damp spot under carpet, a musty smell, or baseboards that swell and lift.
Cracks and a busy heater
New cracks in floors or walls, or a water heater that seems to run non-stop.
What to do right now
These steps limit the damage and give your insurer what it will ask for.
- Turn off every tap, washing machine, dishwasher and ice maker.
- Find your water meter. If the leak indicator or low-flow dial keeps moving with everything off, water is escaping on your side of the meter.
- Shut the main valve at the house. If the meter stops, the leak is on your property. Leave the main off and call.
- Move rugs and furniture off wet floor. Photograph the damage, the meter and your bill.
- Do not break the slab yourself. Without a locator you will probably cut in the wrong place.
How we find a slab leak before we cut anything
We work in stages, so the spot we mark is on the pipe and not beside it.
- Isolation test. We test the hot side, the cold side and the supply line separately by pressure, so we know which pipe is leaking.
- Acoustic listening. Electronic equipment picks up the sound of escaping water through the floor.
- Thermal imaging. A thermal camera shows hot-water lines and wet areas.
- Line tracing. We map the pipe path before we mark the floor.
Detection has limits. Deep leaks, plastic lines and several small leaks can blur the signal. If the readings do not agree, we say so and re-test before cutting. See the full detection process.
Slab leak repair Pomona: your options, and when each one makes sense
We tell you which one we would pick for your house and why, including when the cheaper choice is likely to be good enough. Compare each option in detail.
| Method | What it is | Fits when | Watch out for |
|---|---|---|---|
| Spot repair | We open the slab over the break and replace that section. | One leak, pipe otherwise sound, floor easy to patch. | Another leak can show up later in old copper. |
| Reroute | We abandon the leaking line and run a new one through walls or the attic. | Leak under a hard-to-open floor, or the line is failing. | Drywall and paint patches; ask about permit and inspection. |
| Epoxy lining | We coat the inside of the existing pipe. | Several pinholes, pipe still round and sound. | Not for every pipe or fitting; it needs inspection first. |
| Repipe | We replace the whole supply system. | Repeated leaks, or pipes at the end of their life. | Largest job; plan on wall patching. |
What slab leak repair costs, and how long it takes
Price depends on where the pipe is, what sits on top of it, and how many leaks there are. National contractor-cost figures give you a reference point for slab leak repair Pomona jobs.
Typical overall cost is around $2,300, with repairs ranging from $630 to over $4,400. What raises the number: tile or stone to match, finished floors over the leak, hard access, a second leak, and drywall and paint after a reroute. You get the scope and price in writing before work starts, and we tell you if the scope changes once we are in the wall.
Read the full cost guide Does insurance cover it?
Figures are national reference data from HomeAdvisor via Angi, April 2024. Southern California labor and flooring costs can push a job higher. This is not a quote. Checked November 2026.
From your call to a finished floor
You call
A plumber asks the right questions and tells you how to protect the house.
We test
Isolation test and locator, then we show you the readings.
You decide
Options, price for each, and our pick, in writing.
We repair
We cover furniture, contain dust, open one access point and fix the pipe.
We close up
Pressure test, patch the slab, and walk through it with you.
Why slab leaks happen in Pomona homes
- Age. Much of Pomona’s housing went up in the mid-20th century on concrete slabs, and the original copper is now decades old.
- Water chemistry. Copper can pit from the inside over years. Pomona draws most of its water from local groundwater and buys the rest from Metropolitan Water District and Three Valleys, per the City of Pomona.
- Pressure. A high-pressure street, a failing regulator or water hammer strains old joints.
- Movement. Southern California soil shifts, and small settling or earthquake movement can rub a line against concrete.
- Rubbing. Pipes that touch rebar, rock or the slab edge wear through slowly.
Pomona, from Phillips Ranch to downtown
We do slab leak repair Pomona-wide, across the whole city, and we book slab leak repair Pomona homeowners need on short notice, including ZIP codes 91766, 91767 and 91768: older streets near downtown and the Arts Colony, the blocks around Lincoln Park and Ganesha Park, the Phillips Ranch neighborhoods, and homes near Cal Poly Pomona and Fairplex.
Getting to a slab leak repair Pomona job from the I-10, SR-60 or SR-71 is usually quick, but traffic around county fair season and rush hours can slow it. We give you a realistic arrival window when you call.
Hot, dry summers and Santa Ana wind days push water use up. Winters are mild, so burst pipes from freezing are rare here. A Pomona leak is usually a wear problem, not a cold problem.
Homeowners
A written scope, a price range, and a straight answer on whether to patch or replace.
Landlords and property managers
Quick response to tenant reports and photo documentation for your records.
Renters, buyers and HOA owners
Clear reports of what we found, so the right party pays and deals move on facts.
Answers to what Pomona homeowners ask first
Plain-language guides on finding, pricing and paying for a slab leak, from the slab leak repair Pomona team at Pomona Slab Leak Pros.
Slab leak detection
How we find the leak before cutting: four stages, two methods to confirm.
How to tell if you have a slab leak
Six warning signs and a 30-minute water meter test.
Slab leak repair cost
Price ranges, what raises them and what a written estimate should show.
Does insurance cover a slab leak?
What policies usually cover, and how to file.
Who pays for a slab leak?
Owner, landlord, tenant or HOA.
Real reviews from Pomona homeowners
Real reviews of slab leak repair Pomona homeowners booked with Pomona Slab Leak Pros.
We noticed a strange warm spot on our living room hardwood floor on a Friday evening, and by Saturday morning, the water meter outside was spinning even with all indoor fixtures turned off. I called expecting a massive headache and torn-up floors — Pomona Slab Leak Pros had a technician at our Via Verde driveway by 10 AM. They used electronic acoustic listening equipment to pinpoint the exact pinhole leak under the concrete slab right beneath our hallway. They handled our insurance claim coordination directly and repaired the line with minimal disruption. Absolute lifesavers.
Our older home near the Phillips Ranch area had a sudden drop in water pressure, and we started hearing a faint running water sound behind the kitchen walls. These guys came highly recommended in a local Inland Empire community group, and they did not disappoint. They performed a complete hydrostatic pressure test, isolated the broken hot water line beneath the kitchen slab, and presented us with clean, trenchless repair options that didn’t destroy our tile. Professional, polite, and exceptionally skilled at what they do.
Running a commercial retail space in downtown Pomona means you can’t afford water damage or unexpected business closures. We found damp commercial carpeting near our back storage utility room and suspected a sub-slab pipe failure. The crew arrived on-site quickly, isolated the compromised drain line using thermal imaging, and handled everything from precise slab excavation to professional concrete patching with incredible precision. They kept us fully informed at every step and saved our inventory. Would recommend them to any property owner in the Pomona Valley.
Real slab leak jobs in Pomona: three jobs that show you exactly what to expect
Every slab leak repair project in Pomona, CA comes with its own unique set of challenges—from shifting Southern California soils and aging copper supply lines to high water pressure stress. Each one is a slab leak repair Pomona homeowners could face. Here are three real scenarios covering the detection, the property, the non-invasive process, and the final outcomes handled by Pomona Slab Leak Pros.
Hidden hot water line leak causing slab heating and high utility bills.
The Situation: A homeowner in Ganesha Hills noticed a warm rectangular patch on their ceramic tile flooring and saw their municipal water bill double over two billing cycles. A slow pinhole leak in the sub-slab copper hot water line had been eroding the soil base for weeks.
What We Did: Deployed electronic acoustic amplification and thermal imaging gear to map the exact breach point beneath the slab without guesswork. Carefully opened a localized 12×12-inch access point in the concrete, bypassed the compromised copper section with continuous PEX piping, and pressure-tested the entire loop to verify zero further loss.
The Outcome: Successfully isolated and repaired the pipe with zero collateral damage to surrounding flooring. Concrete patched flush and clean.
Main supply line pressure drop and foundational soil saturation.
The Situation: Following a sudden pressure drop across all bathroom fixtures in a multi-bathroom home along the Phillips Ranch corridor, a hydrostatic isolation test confirmed a major drop in the main incoming cold water copper line running deep underneath the foundation slab.
What We Did: Executed a comprehensive pressure isolation test to map out the exact quadrant of failure. Rather than tearing up the entire home’s flooring, we performed a targeted trenchless pipe epoxy lining and partial re-route through the attic space to completely bypass the damaged under-slab run.
The Outcome: Permanent water flow restored at full PSI. Property stabilized, and the vulnerable sub-slab section safely decommissioned.
Aged galvanized line corrosion and slow concrete slab seepage.
The Situation: A family living in an established neighborhood in South Pomona noticed bubbling baseboard paint and damp drywall near the hallway closet. They called Pomona Slab Leak Pros for an emergency leak evaluation.
What We Did: Performed a non-invasive electronic line tracing and moisture meter scan. We discovered that decades of mineral-heavy local water had corroded an aging galvanized supply elbow embedded directly in the concrete foundation. We cut a clean access trench, replaced the corroded fitting with modern corrosion-resistant materials, and poured a fresh structural concrete seal.
The Outcome: Moisture intrusion completely halted. Wall framing dried thoroughly, preventing secondary mold development.
Slab leak questions, answered plainly
How do I know if I have a slab leak?
The most common signs are the sound of running water with everything off, a warm spot on the floor, an unexplained bill increase, and low pressure at every tap. Confirm with a meter test: shut off every fixture and watch the meter. If it moves, water is escaping.
How much does slab leak repair cost in Pomona?
Nationally, spot repairs run roughly $200 to $2,000, rerouting about $1,500 to $15,000, and detection $150 to $600. Your price depends on access, flooring and the number of leaks. We put your price in writing before any cutting.
Do you have to break the concrete?
For a spot repair, yes, in one place. A reroute usually avoids the slab by running new pipe through walls or the attic. Epoxy lining works from existing access points when the pipe is suitable.
How long does repair take?
Typically a few hours to three days, depending on the method. A reroute or repipe takes longer than a spot repair. Flooring work afterwards can add time.
Can I find the leak myself?
You can confirm that you have one with the meter test. Pinpointing the break needs acoustic and thermal equipment, and guessing risks cutting the wrong spot.
Will my insurance cover it?
It depends on your policy. Coverage for resulting damage often differs from coverage for the pipe itself, and long-running leaks are treated differently from sudden ones. Keep photos, bills and our report, and ask your insurer before work begins.
Is a slab leak an emergency?
Treat it as one if water is visible or the meter runs fast. Shut off the main and call. A slow leak is less urgent, but it can undermine soil, damage flooring and raise your bill every month.
Who is responsible: me, my landlord or the HOA?
Owners normally handle pipes inside their own home. Renters tell their landlord in writing. In a condo, your HOA documents say which pipes the association owns.
Do you serve my part of Pomona?
We serve Pomona, including ZIP codes 91766, 91767 and 91768. If your address is outside the city, call and we will tell you if we can reach you.
Do I need a permit?
Some repairs and reroutes may need one from the City of Pomona. We tell you which, and handle it when it applies.
Talk to a Pomona plumber
Call, or visit us on 3rd Street in downtown Pomona.
Call (909) 415-2610 Get directionsSlab leak repair Pomona homeowners can count on
If water is running now, shut off the main first, then call. A plumber will tell you what to do next.
Call (909) 415-2610More on slab leaks
- How to Tell If You Have a Slab Leak
- Slab Leak Detection Pomona, CA
- Slab Leak Repair Options: Spot Repair, Reroute, Epoxy Lining or Repipe
- Slab Leak Repair Cost in Pomona, CA
- Does Homeowners Insurance Cover a Slab Leak?
- Who Pays for a Slab Leak? Owner, Landlord, Tenant or HOA
- Browse the full slab leak guide
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