Lewisville sits in the heart of Denton County on some of the most expansive clay soil in Texas. Much of the city lies on Eagle Ford “black gumbo” clay—high in bentonite and volcanic ash—that can swell or shrink by up to seven inches depending on moisture levels. When it rains, the soil expands aggressively; during hot, dry summers, it contracts and cracks. This constant movement puts major stress on pool shells, underground plumbing, and concrete decking.

North Texas soils often contain more than 50% clay, meaning every pool in Lewisville is under continuous pressure from shifting ground—even when everything looks normal on the surface.

Whether you’re in Castle Hills, Lewisville Valley, Creekside, Meadow Lake, Highland Shores, Vista Ridge, Timber Creek, Lake Park, The Colony area, or any established neighborhood, the soil challenges are the same. Pools built during the 1980s–1990s growth period are especially vulnerable as original materials and seals age.