What is a common consequence of poor drainage around a building site?

Poor drainage around a building site typically leads to the accumulation of water in areas where it should not be, resulting in damp crawlspaces. When water is not adequately channeled away from the foundation, it can seep into crawlspaces, causing moisture-related issues. This prolonged exposure to moisture can lead to mold growth, wood decay, and damage to insulation or electrical systems located in these spaces. Therefore, addressing drainage concerns is essential to maintaining a dry and healthy foundation.

The other options do not accurately reflect the consequences of poor drainage. Increased air quality is unlikely to be a result of moisture accumulation; in fact, the opposite may occur due to the growth of mold and mildew. Flatter landscaping can sometimes be a result of poor drainage, but it is not a direct consequence of water accumulation. Greater structural integrity would be compromised by excess moisture rather than enhanced, as water can undermine support structures over time.