The answer to 'why is my bathtub slow draining' is that the drain is likely clogged with hair, soap scum, or other debris. A slow-draining bathtub is a common plumbing issue that can be caused by a buildup of materials in the drain pipe, preventing water from draining properly.
Some common signs of a clogged bathtub drain include water pooling in the tub during use, water draining slowly, or a foul odor coming from the drain. This problem can worsen over time if left untreated, potentially leading to a complete blockage and flooding.