Leak Detection Services in Ballwin, MO

Find Hidden Leaks Before They Destroy Your Ballwin Home

Water leaks are among the most destructive—and deceptive—plumbing problems homeowners face. A small leak behind a wall or under your foundation can go undetected for weeks or months, silently causing mold growth, structural rot, foundation damage, and ruined flooring. By the time you notice water stains or musty smells, the damage is often extensive and expensive to repair.

At Plumber Guys of Ballwin, we use professional leak detection equipment to pinpoint leaks accurately—without unnecessary destruction to your walls, floors, or foundation. Our goal is to find the leak, show you exactly where it is, and provide repair options so you can make an informed decision.

We serve homeowners throughout Ballwin and St. Louis County, including Kehrs Mill, Vlasis Park, Manchester, and Clayton.

Types of Leaks We Detect

Different types of leaks require different detection approaches. Our equipment and expertise allow us to find leaks in locations that would be impossible to locate without professional tools.

• Slab leaks — Leaks in the water lines running under your concrete foundation. Common in homes built on slab foundations, these leaks can go undetected for months. Signs include warm spots on floors, unexplained water bill increases, or the sound of running water when nothing is on. Many Ballwin homes built in the 1970s-1990s have copper pipes under the slab that are now reaching end of life.
• Hidden pipe leaks — Leaks inside walls, under floors, or above ceilings. These often start at joints, fittings, or where pipes pass through framing. Acoustic detection allows us to hear the leak without opening up walls.
• Supply line leaks — Leaks in the pressurized water lines that bring water to your fixtures. These can be anywhere from your meter to your faucets and are often caused by corrosion, high water pressure, or freezing.
• Drain line leaks — Leaks in drain, waste, and vent pipes. While not pressurized, these leaks can cause significant damage and health concerns because they involve wastewater.
• Fixture leaks — Slow leaks from toilets, faucets, water heaters, and supply line connections. The wax ring under your toilet, for example, can fail silently and leak water into the subfloor for years.
• Main line leaks — Leaks between your water meter and your house. These are your responsibility to repair (not the water company's) and can waste significant water before you notice the bill increase.

How We Find Hidden Leaks

Our leak detection process uses multiple technologies to locate leaks precisely:

Acoustic detection: Specialized equipment amplifies the sound of water escaping from pipes. Even tiny leaks create detectable sounds as water sprays or drips inside walls or under concrete. We can often pinpoint the leak location within a few inches.

Thermal imaging: Infrared cameras detect temperature differences in walls and floors. Water from leaks affects surface temperatures, creating visible patterns that reveal leak locations and the extent of water damage.

Pressure testing: We can isolate sections of your plumbing system and test for pressure loss, confirming whether a leak exists and narrowing down its location.

Meter analysis: Sometimes the simplest test is the most effective. We'll shut off all water use in your home and watch your water meter. If it's still moving, there's a leak somewhere.

Warning Signs of Hidden Water Leaks

Early detection is critical. Watch for these signs that you might have a hidden leak:

• Unexplained water bill increase — If your bill jumps without a change in usage habits, a leak is likely. Even small leaks add up over a billing cycle.
• Sound of running water — If you hear water flowing when all fixtures are off, water is going somewhere it shouldn't.
• Warm spots on floors — This often indicates a hot water line leak under a slab foundation. The constant flow of warm water heats the concrete above it.
• Musty or moldy smell — Hidden moisture feeds mold and mildew growth, creating distinctive odors before visible damage appears.
• Water meter spinning — Turn off all water in your home and check your meter. If it's still moving, you have a leak.
• Low water pressure — A significant leak can reduce pressure at your fixtures. If pressure has dropped without explanation, a leak might be the cause.
• Cracks in foundation or walls — Persistent water under or around foundations can cause shifting and cracking. This is especially common with slab leaks.
• Wet spots or water stains — Discoloration on walls, ceilings, or floors—even if they dry out—indicates water has been present.

After We Find the Leak

Once we locate your leak, we'll explain exactly what we found and discuss your repair options. Depending on the location and severity, repairs might include:

• Spot repair — For accessible leaks, we can often repair or replace the damaged section directly
• Pipe rerouting — For slab leaks, rerouting the line through walls or attic may be more practical than breaking through concrete
• Epoxy pipe lining — In some cases, we can seal leaks from inside the pipe without excavation
• Partial or full repiping — For homes with multiple leaks or failing pipe systems, replacement may be the most cost-effective long-term solution

We'll give you honest recommendations based on what makes sense for your situation—not what's most profitable for us. Sometimes a $300 repair is the right answer. Other times, investing in repiping prevents recurring problems and future damage.