A false water table is a buildup of water in the soil that occurs above the actual water table due to poor drainage conditions. When the soil is unable to drain properly, the water can accumulate and form a false water table. This can lead to water infiltration into basements or crawl spaces, and can also cause damage to the foundation of a building.

The false water table can cause the soil to become saturated, which can create hydrostatic pressure against the foundation. This pressure can push against the walls and floor of the foundation, leading to cracks and other damage. If left unchecked, this can ultimately compromise the structural integrity of the foundation.

In addition to causing damage to the foundation, a false water table can also create a damp and humid environment in the basement or crawl space, which can promote the growth of mold and mildew. This can not only be harmful to the structural integrity of the building, but also to the health of those living or working in the space.

It's important to address the issue of a false water table as soon as possible to prevent further damage. Solutions can include improving drainage conditions through the installation of French drains or other drainage systems, addressing grading and landscaping issues, and ensuring proper gutter and downspout placement and functionality. A professional should be consulted to determine the best course of action based on the specific circumstances of the building and property.