Leak Detection in St. Louis, MO
Protect your property in St. Louis, MO from water damage and costly repairs with our professional leak detection.
- Written Report for Insurance
- Licensed & Insured
- Fast, Accurate Detection
- Expert Local Plumbers
Need Professional Leak Detection in St. Louis, MO?
Don't let hidden leaks cause expensive damage. Call (816) 330-2338 now.
Your Go-To for Leak Detection in St. Louis, MO
FGV Plumbing specializes in professional leak detection, using modern equipment to locate leaks that are often out of sight. From dripping pipes behind walls to hard-to-find slab leaks under your foundation, we find the source of the problem before it escalates.
Our expertise includes:
- Pressure isolation tests for main lines, branches and irrigation
- Detecting slab leaks under concrete slabs.
- Accurately locating gas line leaks for safety.

Additional Plumbing Maintenance Services in St. Louis, MO
Our maintenance and specialty plumbing services in St. Louis, MO protect your home year-round and extend the life of every system.

Customers
Why Choose FGV Plumbing for Leak Detection in St. Louis, MO?
Hidden leaks can lead to serious foundation problems and mold growth if not addressed quickly. Our proactive approach saves homeowners real repair costs down the line.
- Advanced Tools, We rely on acoustic listening devices, thermal imaging cameras and tracer gas to locate leaks with precision.
- Clear Reporting, You receive photos and a written report of the leak and recommended repair.
- Accurate Location, Our technicians use specialized tools like acoustic detectors and thermal cameras to pinpoint leaks without unnecessary demolition.
Citywide Coverage
No matter where you are located in St. Louis, our expert technicians are just a call away for reliable leak detection. We cover the entire metro area, ensuring quick response times for all your plumbing emergencies.
Experienced Team
Our leak detection specialists at FGV Plumbing are highly trained and experienced in identifying even the most elusive leaks. They regularly train on current detection technologies and techniques for Missouri plumbing systems.
Safety-First Approach
Safety is a top priority for FGV Plumbing during every leak detection service. We ensure all work is performed according to current local and state plumbing codes, protecting your home and family.
Trusted Certified St. Louis Plumbing Services Professionals
At FGV Plumbing, we take pride in providing licensed, certified plumbing services throughout St. Louis, MO. Backed by recognized industry credentials, our experienced plumbers combine technical skill with genuine customer care. Whether it is repair, installation, or maintenance, we follow strict safety and quality standards to deliver lasting results you can trust.
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PHCC Plumbing Contractor Recognition
Better Business Bureau (BBB) Accreditation
Angi Certified Pro
ISO 9001 Quality Management CertificationPrecise Leak Detection Services in St. Louis, MO
Leak Detection Cost Comparison in St. Louis, MO
Professional leak detection typically costs $150 to $450 for a standard home, depending on the system size and how many areas need testing. Pool leak detection usually runs $250 to $500. Repair costs vary widely, from $150 for a fixture fix to several thousand dollars for a slab reroute. Accurate detection keeps the repair cost as low as it can be.

Pool and Spa Leak Detection in St. Louis
Summer heat and wind can evaporate a lot of pool water, so it can be hard to tell normal loss from a leak. A bucket test compares evaporation to actual water loss. We then pressure test plumbing lines and use dye testing around lights, skimmers and fittings. Finding the leak safeguards the pool shell and the soil around it.
PEX and Copper Pipe Leak Detection in St. Louis, MO
Whether your St. Louis home has modern PEX plumbing or traditional copper pipes, leaks can occur. We are experienced in detecting leaks in all common piping materials found in Missouri homes. Our tools are designed to work effectively with both metallic and non-metallic pipes, so no matter your plumbing system, we can accurately locate any leak. We handle everything from pinhole leaks to joint failures.
Main Water Line Leak Detection in St. Louis
The service line between your meter and house can leak underground for months, especially in older galvanized or copper lines. Wet spots in the yard, oddly green grass or a sinking area near the front of the house are clues. We use line tracers to map the pipe and ground microphones to hear the leak. That keeps excavation to a small, focused hole.
Underground Water Line Leak Detection in St. Louis, MO
Leaks in underground water lines, often leading from the meter to your home, can result in serious water loss and property damage. We use ground microphones and tracer gas detection to locate these buried leaks precisely. Factors like tree roots, ground shifting and corrosion in older galvanized pipes can contribute to these issues, making professional detection essential.
Fixture and Appliance Leak Detection in St. Louis, MO
Running toilets, worn faucet cartridges and leaking water heater connections waste more water than most people realize. A silent toilet leak can lose hundreds of gallons a day. We check flappers, fill valves, supply lines, softeners and water heater fittings. These repairs are typically quick and inexpensive.
Gas Leak Detection in St. Louis
Gas leaks are extremely dangerous and require immediate professional attention. FGV Plumbing provides rapid response gas leak detection services using highly sensitive detectors to identify even the smallest gas leaks in your home or business. We prioritize safety and will work quickly to locate the leak, advise on necessary repairs and make sure your gas lines are secure and up to code in St. Louis.

Preventative Leak Detection Inspections in St. Louis, MO
Beyond emergency services, FGV Plumbing also offers preventative leak detection inspections. Regular inspections can identify small leaks before they become major problems, especially in older homes or properties with known plumbing issues. This proactive approach helps extend the life of your plumbing system and can save thousands in potential repair costs, especially for homes with aging infrastructure.
Expert Leak Detection Near Me in St. Louis, MO
When you need a plumbing company that understands the needs of St. Louis homes and businesses, FGV Plumbing is here. We pride ourselves on being easy to reach and providing top-tier leak detection that residents can trust, no matter where they are located in the area.
For dependable leak detection near me in St. Louis, MO, look no further than FGV Plumbing. We are your local experts, serving the entire area with prompt and professional plumbing services. Our team is always ready to respond to your call, bringing advanced tools directly to your doorstep.
FGV Plumbing at a Glance
- Fully licensed plumbing team covering St. Louis, MO
- Same-day appointments and 24/7 emergency response
- Clear written estimates, no hidden fees
- 4.9-star rated by 307+ Missouri customers
St. Louis Map
St. Louis Information
- Population
- 281,754
- Area codes
- Local
- Service area
- St. Louis and communities within 40 miles
- Nearby
- University City, Florissant, Oakville, Ballwin
With shifting soil and older housing stock in many parts of St. Louis, MO, professional leak detection is vital for preventing foundation damage and costly repairs. Expansive clay soils are common in Missouri, and they swell and shrink with moisture, putting stress on foundations and buried lines.
Expert Services
Trust our professionals for reliable FGV Plumbing solutions in St. Louis, MO.
Our Specialized Plumbing Services in St. Louis, MO
At FGV Plumbing, we provide a complete range of plumbing services across St. Louis, MO. From leak detection to full system installations, our team ensures fast, precise, and affordable service for both residential and commercial properties. Explore our core services below:
Here Is How Our Leak Detection Process Works in St. Louis, MO
We confirm the leak, narrow it down and mark it, then give you clear repair options.
Request a Quote
Call (816) 330-2338 and describe the signs you have noticed, such as a high bill or damp spot. We schedule a visit and explain our detection fee.
Test and Isolate
We check your meter and run pressure tests to confirm a leak and identify which part of the system is losing water. This focuses the search before we start locating.
Pinpoint and Report
We use acoustic and thermal equipment to mark the leak accurately. You get a written report and repair options with prices.
Frequently Asked Questions About Leak Detection in St. Louis
Leak detection in St. Louis usually costs $150 to $450 for a typical home, depending on the size of the system and the number of areas tested. Pool leak detection runs about $250 to $500. We tell you the price before we start.
A slab leak is a leak in the water pipes embedded within or beneath your home's concrete slab foundation. Expansive clay soils are common in Missouri, and they swell and shrink with moisture, putting stress on foundations and buried lines. Soil that shifts and settles strains plumbing lines, and temperature swings cause pipes to expand and contract over the years.
We use acoustic ground microphones, thermal imaging cameras from brands like FLIR, line tracers, moisture meters and pressure test gauges. Each tool helps confirm a different type of leak. Using several together gives reliable results.
While you can check for obvious leaks like dripping faucets, hidden leaks require professional tools and expertise. DIY attempts can often misdiagnose the problem or cause further damage, especially with slab or gas leaks.
Common signs include a sudden spike in your water bill, damp spots on walls or floors, mildew odors, visible mold growth, the sound of running water when no fixtures are in use, or a constantly running water meter even when all water is off.
If you suspect a gas leak, right away evacuate everyone from the property, do not use any electrical devices, and call your gas utility company and FGV Plumbing from a safe location. Gas leaks are very dangerous and require immediate professional attention.
Homes around St. Louis on private wells should test for hardness and bacteria before picking a filter. Hard or aggressive water can cause pinhole corrosion in copper pipes over time. Slab foundations on shifting soils also put stress on pipes underneath the house, and high water pressure in some areas adds more strain.
Many homeowners policies cover the cost of finding and accessing a sudden leak, though coverage varies. We provide a written report with photos to support your claim. Check with your insurer about your specific policy.
What People Are Saying About Our Plumbing Experts?

Emily R.
I called FGV Plumbing for plumbing repair, and the technician was fast, polite, and thorough. They explained the problem clearly and fixed it the same day. I will definitely hire them again. Highly recommended!
Plumbing Repair · Florissant, MO
Patricia H.
We had a slab leak that two other companies could not find. FGV Plumbing located it in under an hour, explained our options, and the price matched the quote to the dollar.
Slab Leak Repair · Florissant, MO
James P.
Our commercial plumbing system had a leak under the sink, and FGV Plumbing handled it professionally. The plumbers arrived quickly and restored everything without disruption to our customers.
Commercial Plumbing · University City, MO
Robert G.
The trenchless sewer replacement saved our front yard. They walked us through the camera inspection footage first so we knew exactly what we were paying for.
Sewer Line Replacement · St. Charles, MO
Mark T.
When our office needed drain cleaning, FGV Plumbing provided quick, reliable service. The plumber arrived on time and made sure every drain flowed perfectly before leaving. Very satisfied.
Drain Cleaning · Ballwin, MO
Laura S.
I scheduled a water heater replacement, and the team made the process smooth and affordable. The new unit works perfectly, and they cleaned up after completing the job.
Water Heater Replacement · Ballwin, MO













