7 Signs of a Slab Leak (And What to Do About It)

A slab leak — a water line leaking underneath your home's concrete foundation — is one of the most damaging plumbing problems precisely because you can't see it. Here are the warning signs.

The 7 warning signs

• A spike in your water bill with no change in usage.
• The sound of running water when every fixture is off.
• Warm or hot spots on the floor (a leak on the hot-water line).
• Low water pressure that develops gradually.
• Cracks in flooring or walls as the foundation shifts.
• A musty or mildew smell from trapped moisture.
• Your water meter keeps moving with the main shut to the house.

What to do if you suspect a slab leak

Don't wait. The longer a slab leak runs, the more damage it does to your foundation and the higher your water bill climbs. Call us for professional leak detection — we use electronic and acoustic equipment to pinpoint the exact spot so we only open the smallest area necessary to repair it.

Why slab leaks are common in spring around Carrollton

North Texas soil expands and contracts with our wet-then-dry seasons. That ground movement puts stress on the water lines under your slab, which is why we see a wave of slab leak calls every spring. Catching one early can be the difference between a targeted repair and a major one.