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What Is a Slab Leak and How Is It Found?

August 20, 2026

A slab leak is a leak in a water line that runs under or inside the concrete foundation of your home. Because you cannot see the pipes, these leaks are easy to miss.

Common causes

  • Aging or corroded copper pipes
  • Shifting soil or small earth movement
  • High water pressure over many years
  • Poor original installation

How we locate it

We isolate the line, then use listening devices and tracing tools to find the exact point where water escapes. That means the repair team opens a small area of floor, not a large one.

What happens next

Depending on the pipe condition, the fix may be a spot repair, a reroute through the attic or walls, or a repipe. We will explain the options in plain language.

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