What is a common sign of a clogged drain?

A common sign of a clogged drain is slow drainage. This occurs when there is an obstruction in the pipes that hinders the normal flow of water. As waste accumulates and forms a blockage, water cannot pass through as quickly as it should, leading to a noticeable delay in how fast it drains from the sink, bathtub, or shower.

This symptom often serves as an early warning that a more significant clog might develop if not addressed, allowing for timely intervention to clear the blockage before it worsens. In plumbing practice, recognizing slow drainage is essential for preventing future issues such as complete obstructions or potential pipe damage from built-up pressure.

Other options, such as warm water flow or no water usage, do not directly indicate a clog. Freezing pipes may result in various problems, including clogs due to ice formation, but they are not an indication of a clogged drain itself.