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Professional Water Leak Detection & Repair In Dallas, Fort Worth, & the DFW Metroplex
Major leaks, burst pipes, flooding, and slab leaks can’t wait
Are Hidden Leaks Causing Damage Behind Your Walls?
Hidden leaks can go unnoticed for weeks, causing damage behind walls, under floors, and beneath your foundation. Here are the signs it’s time to investigate:
- Unexplained Water Bill Increases? Even small hidden leaks waste hundreds of gallons monthly
- Moisture Stains or Damage? Stains on walls, ceilings, or floors signal active leaks requiring immediate attention
- Mold or Mildew Growth? Musty odors and visible mold indicate ongoing water intrusion behind walls or under floors
- Sound of Running Water? Hearing water when nothing’s on means leaks are actively damaging your home right now
Where Leaks Hide: Common Locations We Investigate
Behind Walls and Ceilings
Supply line leaks inside walls create moisture damage, mold growth, and structural problems long before any visible signs appear. By the time water stains show up on your drywall, the damage behind it has often been building for weeks or months.
Our detection equipment locates these hidden leaks without extensive demolition, so we know exactly where to open the wall before any repair work begins, keeping disruption to your home to a minimum.
Under Slab Foundations
Slab leaks occur when pipes beneath your concrete foundation develop holes, cracks, or connection failures. These serious leaks undermine foundations, waste substantial water, and create costly damage that grows worse every day it goes undetected.
In the Dallas-Fort Worth area region, expansive clay soil places additional stress on underground pipes — making slab leaks more common here and requiring immediate professional attention when they occur.
Under Floors and Crawlspaces
Leaks beneath flooring or in crawlspace pipes create persistent moisture problems, wood rot, and structural damage that can compromise your home's integrity before any surface signs appear.
A water pressure test can identify these problems early before soft spots in flooring or sagging subfloor signal damage that has already become extensive and expensive to repair.
In Yard and Landscape
Underground leaks in main water lines or irrigation systems waste water, increase bills dramatically, and create soggy areas or sinkholes in your yard. These outdoor leaks are easy to miss because the damage happens below ground and out of sight.
We locate and repair these outdoor leaks efficiently using detection equipment to pinpoint the source before any excavation, minimizing disruption to your landscaping.
Toilet and Fixture Leaks
Silent toilet leaks and dripping fixtures waste thousands of gallons annually while seeming minor. A single faulty toilet flapper can waste up to 200 gallons per day, adding significantly to your water bill without any obvious visible sign.
We identify these inefficiencies and provide repairs that stop waste completely, often catching developing problems at fixtures before they become larger plumbing failures.
Water Heater Connections
Leaks at water heater connections, relief valves, or tank bottoms create flooding risks and water damage that can affect floors, walls, and cabinets before you realize anything is wrong.
Early detection prevents emergency failures that flood homes, and our annual plumbing inspections include water heater condition assessment specifically to catch these problems before they become crises.
Experiencing unexplained water bill increases, moisture damage, or signs of a hidden leak?
Enjoy total peace of mind with our Advantage Plan
Our Comprehensive Leak Repair Services
Expert Leak Repair Solutions
Not every leak requires the same approach. Our licensed plumbers evaluate each situation individually — choosing the right repair method for your pipe type, leak location, and home’s specific conditions to deliver lasting results without unnecessary disruption.
Our repair services include:
- Supply line repair and replacement (copper, PEX, CPVC, and galvanized)
- Slab leak repair via direct access or pipe rerouting
- Drain and sewer line repair using traditional replacement methods
- Fixture connection repairs at toilets, sinks, tubs, showers, and appliances
- Outdoor and main line repairs using excavation and traditional methods
- Emergency leak response to stop water flow and minimize damage immediately
Unlike temporary patches, our repairs meet code requirements, include warranties, and are built to last, protecting your home for the long term.
Our Leak Repair Process
Every repair starts with precision. We pinpoint exact leak locations before touching anything, so we only open what’s necessary — reducing costs and protecting your home throughout the process.
Our process includes:
- Accurate leak location using advanced detection equipment before any repair begins
- Clear explanation of what caused the leak and which repair option provides the best long-term value
- Quality repairs using materials and techniques matched to your specific pipe type and leak
- Damage assessment after repairs with trusted restoration referrals when needed
- Prevention recommendations addressing pipe age, water pressure, and water quality factors
We handle everything from detection through repair so you’re not coordinating multiple contractors to solve one problem.
Signs Your Plumbing Needs Professional Attention
Water leak problems often announce themselves through utility bills, visible damage, and structural changes. Recognizing these warning signs early can save you money and prevent much bigger problems.
What Your Water Bill Is Telling You
- A sudden spike in your water bill with no new appliances, guests, or irrigation changes
- Checking your water meter after shutting off every faucet and seeing it still spin
- Noticeably weaker pressure at multiple fixtures, especially if it dropped suddenly
- Bills staying elevated month after month with no explanation from your water provider
Physical Clues Around Your Home
- Discoloration or bubbling paint on walls and ceilings, especially near plumbing runs
- A musty smell in cabinets, closets, or rooms that persists even after cleaning
- Sections of flooring that feel damp or warmer than surrounding areas
- Patches of grass that are greener or softer than the rest of your lawn
- The sound of water moving through pipes when nothing in the house is turned on
Signs of Deeper Damage
- New cracks in exterior brick, interior drywall, or your home's foundation
- Isolated warm areas on tile or concrete floors pointing to a hot water line issue below
- Doors or windows that recently started sticking or won't close properly
- Multiple symptoms appearing together, especially structural plus utility signs, call for immediate inspection
Current Specials & Financing
Financing options available to make leak detection and repair affordable for North Texas families through extended payment plans and special financing for comprehensive repiping and slab leak repairs.

$9.99/mo*
Advantage Plan
*Up to 4 units in the home. Complete HVAC tune-up and plumbing inspection. Includes AC tune-up, heating tune-up, water heater flush, plumbing inspection and video of the main sewer line. Plan pricing is $9.99/month with a minimum 12-month commitment

$49
AC Cooling Tune Up
*For residential service only. Cannot be applied to past jobs or combined with other coupons. 1 unit only, includes 1" filter change

$120
Water Heater Flush
*For residential service only. Cannot be applied to past jobs or combined with other coupons. Based on the condition or age of your water heater, it might be unsafe to flush your water heater. The technician will determine while onsite if it might be detrimental to flush your water heater and give an honest recommendation
Emergency Leak Service Available
Major water leaks, burst pipes, and slab leaks causing foundation damage can’t wait. Our emergency service technicians respond quickly to stop water flow, minimize damage, and provide immediate solutions while planning permanent repairs.
Call (469) 217-9604 for urgent water leaks affecting your family’s comfort or safety.
Slab Leak Detection & Repair Specialists
Slab leaks develop when pipes beneath your concrete foundation fail and in the Dallas-Fort Worth area, expansive clay soil makes them more common and more damaging than in most other regions.
Understanding Slab Leaks
Pipe corrosion from aggressive water chemistry and soil conditions
Abrasion and wear from pipes expanding and contracting against surrounding concrete
Poor installation creating stress points at sharp bends or inadequate supports
Ground shifting from foundation settlement or clay soil movement
Excessive water pressure accelerating wear at connection points and pipe bends
Slab Leak Warning Signs
- Sound of running water under floors when all fixtures are off
Warm or damp spots on floors indicating hot water line leaks beneath the slab
Foundation cracks, settling, or heaving
Persistent moisture or mildew smell with no visible water source
Dramatic water bill increases persisting month after month
Our Slab Leak Repair Approach
- Direct Access Repair — Accessing the pipe through your foundation for isolated leaks with good overall pipe condition
- Pipe Rerouting — Running new pipes through walls, attics, or crawlspaces to avoid foundation disruption
- Partial or Complete Repiping — Comprehensive solution when multiple leaks or aging pipes put your home at ongoing risk
What is the Whole Home Advantage Plan?
Water Leak Detection & Repair Throughout the Dallas-Fort Worth area
For 60 years, Dial One Johnson has helped Dallas-Fort Worth families protect their homes. Water leaks don’t always announce themselves with obvious signs, many develop silently behind walls, under slabs, or in hidden pipe sections, causing extensive damage before homeowners realize problems exist.
Whether you’ve noticed mysterious water stains, unexplained water bill increases, or signs of moisture damage, our licensed plumbers use advanced detection equipment and three generations of experience to locate leaks quickly and provide lasting repair solutions that protect your home and investment.
Learn how you can protect your plumbing with our Whole Home Advantage Plan
Why Choose Dial One Johnson for Leak Detection & Repair?
Advanced Equipment and Expertise
Finding leaks requires both sophisticated technology and the experience to interpret what equipment reveals. Our investment in professional-grade detection tools combined with three generations of plumbing expertise means we locate problems accurately and efficiently.
Honest Assessments and Recommendations
We provide straightforward advice about repair options, discussing pros and cons of different approaches. You'll never feel pressured toward expensive solutions when targeted repairs adequately address your situation.
Minimizing Home Disruption
Our precise leak location methods minimize unnecessary demolition and disruption to your home. We access only what's necessary to complete repairs, and our restoration work leaves your home in proper condition.
Complete Leak Solutions
From detection through repair and prevention, we handle your entire leak problem. You won't need to coordinate with multiple contractors, we provide comprehensive solutions and take responsibility for complete resolution.
Licensed, Insured & Experienced
All our plumbers maintain proper licensing and insurance. This protects you, ensures repairs meet code requirements, and provides the peace of mind that comes from working with legitimate, qualified professionals.
Same-Day Service Available
Water leaks worsen over time, and the damage they cause increases daily. We offer same-day service for most leak situations, helping you address problems quickly before damage escalates.
How We Find Hidden Leaks: Our Detection Technology
Electronic Leak Detection
Sensitive electronic listening devices detect the sound signatures of water escaping pipes even through concrete, drywall, or underground. This technology allows us to hear what the eye can't see, pinpointing leak locations before any repair work begins.
This non-invasive approach means we can locate leaks inside walls, beneath slabs, and underground without opening anything up until we know exactly where the problem is — minimizing disruption to your home throughout the process.
Thermal Imaging Cameras
Infrared cameras detect surface temperature differences on walls, floors, and ceilings caused by water leaks beneath them. When hot water escapes from a pipe, it warms the floor or surface above it, creating subtle temperature variations our trained technicians can identify and pinpoint.
This technology is most effective for locating hot water leaks, particularly under flooring, where the heat transfer from the leak creates a detectable pattern on the surface above. It allows us to identify problem areas without destructive investigation or opening large sections of drywall.
Pressure Testing
We isolate sections of your plumbing system and monitor pressure changes that indicate leaks. This testing identifies problems in specific pipe sections, allowing targeted repairs rather than unnecessary wholesale replacement.
Pressure testing is particularly effective for confirming slab leak locations and identifying which branch of your plumbing system is affected — giving us a precise starting point before any other detection methods are applied.
Video Camera Inspection
Waterproof cameras travel through your pipes, showing exact leak locations, pipe conditions, and blockage causes on video monitors in real time. This gives us a direct visual of problems that no other detection method can provide. Note that video inspection is best suited for identifying visible breaks and damage — hairline fractures too small to appear on camera may require other detection methods.
Video inspection is especially valuable for sewer line leaks, drain problems, and any situation where pipe condition, not just leak location, needs to be evaluated before recommending a repair approach.
Moisture Meters and Probes
These tools measure moisture content in walls, floors, and ceilings, helping us map the full extent of water damage and verify leak locations before beginning repairs. They're essential for understanding how far water has traveled from the original source.
Moisture mapping also helps us identify secondary damage areas that may need attention — ensuring that our repair plan addresses the complete impact of the leak, not just the pipe itself.
Worried a hidden leak is damaging your home right now?
Enjoy total peace of mind with our Advantage Plan
Service Areas Throughout North Texas
From downtown Dallas to suburban communities throughout the Metroplex, our family of certified technicians provides reliable plumbing services where you need them.
We provide professional plumbing services throughout these communities:
What Our Neighbors Say:
Pleasant and professional from start to finish…
Diagnosed and fixed my furnace in minutes…
An absolutely wonderful experience…
Professional, efficient, and my go-to for plumbing…
Prompt, polite, and out within hours…
We were impressed by their expertise and honesty…
Earning the trust of our community, one home at a time
Frequently Asked Questions
How do you detect hidden water leaks?
We use several advanced technologies including electronic listening devices that detect sound signatures from leaking water, thermal imaging cameras that detect surface temperature differences in floors caused by hot water leaks, pressure testing that isolates problem areas, and video camera inspection for drain and sewer lines. These tools allow us to locate leaks accurately without unnecessary demolition.
How much does leak detection cost?
Leak detection costs vary based on your home's size, plumbing system complexity, and the nature of the leak. In many cases, our technicians can locate the source through a visual plumbing inspection alone, no special equipment needed. When detection technology is required, most leak detections range from $89 to $600 depending on the complexity involved. In rare circumstances costs may exceed that range, but your technician will always explain pricing upfront before any work begins.
Can small leaks cause major damage?
Yes, even small leaks cause extensive damage over time. A slow drip can release hundreds of gallons monthly, creating mold growth, wood rot, and structural damage. Small leaks also often indicate developing problems that worsen without attention.
If you have a slab leak, it's important to have it repaired before any foundation work is done. Repairing the foundation while an active slab leak continues to cause damage increases the likelihood of further foundation issues down the road, making it a costly problem to address twice. Addressing leaks promptly, regardless of size, protects your home and prevents expensive repairs.
What are signs of a slab leak?
Common slab leak indicators include sound of running water under floors, warm spots on floors, foundation cracks or heaving, excessive moisture or mildew smell, dramatic water bill increases, and low water pressure. These symptoms warrant immediate professional inspection to prevent serious foundation damage.
How long does leak repair take?
Simple leak repairs like fixture connection fixes may take an hour, while more complex repairs take considerably longer. Major slab leak repairs typically take 1–3 days depending on the scope of work, and larger slab leak replacements may require additional days beyond that. We provide time estimates after diagnosing your specific situation. Emergency repairs focus on stopping water damage immediately, with comprehensive repairs scheduled as needed.
Will you have to tear up my floors or walls?
Our advanced detection equipment minimizes necessary demolition by pinpointing exact leak locations. We only access what's required to complete repairs. For slab leaks, we discuss options including direct access, pipe rerouting through accessible areas, or trenchless methods that avoid foundation disruption.
Do you handle water damage restoration?
We handle all plumbing repairs including leak detection, pipe repair, and system restoration. For drywall repair, flooring replacement, or extensive restoration work, we can recommend trusted contractors who specialize in those services.
How can I prevent future water leaks?
Annual plumbing inspections catch developing problems early. Maintaining proper water pressure, addressing hard water, replacing aging supply lines, protecting pipes from freezing, and fixing small leaks promptly all help prevent major leak problems. Our Advantage Plan includes preventive maintenance that protects your plumbing system.
Does insurance cover water leak damage?
Coverage depends on your specific policy and leak cause. Sudden, accidental leaks typically receive coverage, while gradual damage from long-term undetected leaks may not. We provide documentation of our findings and repairs that helps with insurance claims. Review your policy and contact your insurance company for specific coverage questions.
What should I do if I discover a major leak?
Turn off water at the main shutoff valve immediately to stop water flow. If you can't locate the shutoff or can't turn it off, call us for emergency service. Move valuable items away from water, and document damage with photos for insurance purposes. Don't attempt DIY repairs on major leaks, professional service prevents additional problems and ensures proper repairs.
Our Service Commitments:
- Same-day service available for most leak situations
- Advanced leak detection technology
- Transparent pricing with no hidden fees
- Licensed, insured & certified technicians
- Slab leak specialists
- Emergency service available
- 100% satisfaction guarantee
Ready to Protect Your Home from Water Damage?
Whether you suspect hidden leaks, need emergency leak repairs, or want preventive inspection, our family of licensed plumbers is ready to help with honest service and expert solutions that protect your home.