5 Warning Signs You Have a Hidden Slab Leak

Many homes in Broward County are built on concrete slab foundations. The plumbing lines that bring fresh water into your home are often buried directly beneath or inside this concrete. When one of these pressurized pipes springs a leak, it's called a "slab leak" — and it is one of the most destructive plumbing issues a homeowner can face.

Because the leak is hidden under concrete, it can run for months before being discovered, washing away the soil supporting your foundation. Here are five warning signs that you might have a slab leak.

1. A Sudden Spike in Your Water Bill

If your water habits haven't changed but your bill suddenly doubles or triples, a hidden leak is the most likely cause. Even a pinhole leak running 24/7 can waste thousands of gallons a month.

2. Unexplained Warm Spots on the Floor

If you're walking barefoot in your kitchen or hallway and notice a spot on the tile or hardwood that feels unusually warm, you likely have a leak in your hot water line beneath the slab.

3. The Sound of Running Water

If all the faucets, toilets, and appliances in your home are turned off, the house should be silent. If you can hear a faint hissing or the sound of water running beneath your floors or inside your walls, you have a leak.

4. Cracks in the Walls or Flooring

As the leaking water washes away the soil beneath your foundation, the concrete slab can begin to sink or shift. This shifting causes immense stress on the structure of your home, resulting in cracked floor tiles, warped hardwood, or cracks running up your drywall.

5. Mold or Mildew Smells

Water from a slab leak will eventually wick up through the concrete and into your flooring. If your carpets feel damp or you notice a persistent musty smell that you can't get rid of, water is likely intruding from below.

What to Do If You Suspect a Slab Leak

Do not ignore it. A slab leak will not fix itself, and the longer it runs, the more expensive the structural damage will be.

At Priscilla's Plumbing, we use advanced electronic acoustic listening devices and thermal imaging to pinpoint the exact location of the leak without needlessly destroying your floors. Once found, we can offer solutions like a spot repair or, more commonly, a reroute to bypass the failing underground pipe entirely.