How to Know When You Have a Water Leak Under Your Slab

A hidden water leak under your home’s foundation—also known as a slab leak—can cause serious damage before you even realize it’s happening. These types of leaks are especially common in older homes across Tulsa and the surrounding areas, and they can lead to costly repairs if not caught early.

At Karney Plumbing, we specialize in detecting and repairing slab leaks quickly and effectively. Here’s how to recognize the signs so you can take action before major damage occurs.

What Is a Slab Leak?

A slab leak occurs when a water pipe running beneath your home’s concrete foundation becomes cracked, corroded, or damaged. Since these pipes are out of sight, the leak often goes unnoticed—until signs of water damage start to appear inside your home.

Signs You May Have a Slab Leak

1. Unexplained Increase in Water Bill

A sudden spike in your water bill without any obvious increase in usage is a major red flag. Even a small leak under your slab can waste thousands of gallons of water per month.

2. Warm Spots on the Floor

If you notice a particular area of your floor feels unusually warm, especially on tile or concrete surfaces, it could be a sign of a hot water line leaking underneath the slab.

3. Cracks in Walls or Flooring

As water erodes the soil beneath your foundation, it can lead to subtle shifts or sinking. This movement often shows up as cracks in the walls, ceilings, or flooring.

4. Low Water Pressure

A leak under the slab can reduce the overall water pressure in your home, especially if it's affecting one of the main lines feeding your plumbing system.

5. Sound of Running Water

Do you hear water running even when all faucets and appliances are turned off? That might be water escaping from a pipe beneath your home.

6. Mildew or Moisture Smells

Excess moisture trapped under your home can lead to musty odors, mold growth, or damp spots along baseboards—especially if the leak has been going on for some time.

What Causes a Slab Leak?

Several factors can lead to a slab leak, including:

• Corrosion of older copper pipes

• Poor installation or shifting soil

• Tree root intrusion

• High water pressure or temperature

• Foundation settling

What Should You Do If You Suspect a Slab Leak?

If you notice any of the signs above, don’t wait. Slab leaks will not fix themselves—and the longer they go untreated, the more expensive the damage becomes.

At Karney Plumbing, we use state-of-the-art leak detection equipment to pinpoint the exact location of the problem without tearing up your entire floor. Our team will walk you through your repair options and get your home back to normal as quickly and cost-effectively as possible.

Trust the Tulsa Slab Leak Experts

Dealing with a slab leak can feel overwhelming, but you're not alone. Karney Plumbing has been helping Tulsa homeowners protect their foundations and their peace