What is one consequence of poor drainage systems related to moisture control?

One key consequence of poor drainage systems is the potential for water pooling, which can result in significant structural damage. When water collects in areas due to ineffective drainage, it can create an environment where moisture accumulates over time. This excess moisture can weaken building foundations, compromise structural integrity, and lead to costly repairs. Additionally, stagnant water can contribute to issues such as mold growth, which poses health risks and further impacts the durability of materials used in construction.

The other listed options do not accurately reflect the implications of inadequate drainage. For instance, maintaining humidity (the first option) is not a benefit of poor drainage; it typically leads to increased moisture levels in and around buildings. Likewise, poor drainage does not eliminate mold; rather, it can exacerbate mold issues by creating damp conditions. Lastly, while proper drainage can enhance soil quality by preventing erosion and promoting healthy plant growth, poor drainage has the opposite effect, often leading to waterlogged conditions that hinder soil health.