They have compromised water lines because water lines beneath the concrete slab may have experienced minor damage during the original installation. Most homeowners ask, "how  could a pipe sealed in concrete leak?."  This problem is more prevalent in older homes, and most plumbing experts say the primary cause is improper installation. If water pipes lines were crimped or dented during the original installation, the affected pipe might leak, particularly if the concrete foundation has shifted. For example, a small nick may happen during the concrete pouring process. While these instances may not result in an immediate leak, they will weaken the pipe in that area and eventually develop into a pin-hole leak over many years. In addition, a small piece of gravel in the concrete foundation pressing on the copper pipe under extreme pressure for many years is known to cause a slab leak.

Other Reasons Why A Slab Might Leak

Shifting Soil

The Shifting and settling of the earth could cause a leak. The earth beneath your slab's foundation can change over time, much like it would in the course of an earthquake. This movement can put tremendous force on the buried water lines under your home, causing them to fracture and leak. 

Corroded Pipes

When copper pipes can react to various minerals in the soil, this process is called electrolysis. Pipes carrying hot water corrode from the outside in; while cold water works just the opposite, it can corrode from the inside out. This reaction can gradually eat away at your pipes, resulting in leaks. When You need slab leak detection and repair services in Temecula, CA. Big B's Plumbing has you covered.