Slab Leaks: Why Georgetown is Ground Zero
A slab leak is a leak in the water supply pipes that run under your home's foundation (under the concrete slab). Water escapes into the soil beneath your foundation, causing water bills to spike mysteriously, warm spots on the floor, mold or moisture problems, cracks in the foundation, and settling or uneven floors.
Georgetown sits in Central Texas's Blackland Prairie region, characterized by expansive clay soil. This clay exhibits a critical property: it expands when wet and contracts when dry. Think of it like a sponge — when moisture increases, the soil swells; when moisture decreases, it shrinks dramatically.
This cycling creates foundation movement. Over time, the concrete slab shifts, settles, and cracks. The under-slab copper pipes (especially in homes built 1970s–1990s) are flexible but have limits. As the foundation moves, pipes bend, crack, or rupture.
Additional factors in Georgetown include limestone bedrock creating uneven settlement, older homes with copper under-slab piping that corrodes after 30-40 years, and newer homes using PEX which is more flexible but still vulnerable.
The February 2021 freeze was a wake-up call. Georgetown experienced rare hard freezes (temps to 2°F). Groundwater froze, expanding further. Many homeowners reported sudden burst pipes and slab leaks triggered by that extreme event. Even pipes that thawed without immediate leaks were left weakened and prone to failure months later.
