drainage problem occurs when water fails to move away from a surface—such as a yard, building foundation, or roadway—leading to accumulation, damage, or health risks. Primary Causes, Poor Grading: The land slopes toward a building instead of away, directing water to the foundation., Clogged Infrastructure: Debris like leaves, sediment, or fats (FOGs) block gutters, pipes, and drains., Design Flaws: Undersized pipes, incorrect slope (pitch), or poorly placed downspouts that cannot handle the volume of water., Soil Issues: Heavy clay soil absorbs water slowly, while compacted soil prevents it from soaking into the ground., External Factors: Root intrusions from trees puncturing pipes or runoff from higher neighboring elevations. Key Signs to Watch For, Standing Water: Large puddles that remain 24–48 hours after rain., Structural Damage: Cracks in the foundation, damp basement walls, or musty smells., Landscape Indicators: Soggy lawn patches, dying plants (root rot), or visible soil erosion., Hygiene Issues: Foul odors from stagnant water or increased mosquito activity.