Which of the following is a sign of a leaking pipe?

A sign of a leaking pipe is often indicated by water stains on ceilings or walls. When a pipe is leaking, the water can seep through the materials of the ceiling or wall, leaving behind discolored patches or streaks. These stains can vary in color, usually manifesting as darker spots or streaks, and they often suggest that there is ongoing moisture infiltration due to a leak in the plumbing system. Identifying these stains early can lead to prompt repairs, preventing more significant damage.

In contrast, dry walls would not suggest a leak; instead, they indicate that no water is present in that area. No changes in water pressure could mean the plumbing is functioning normally, which would not indicate a leak either. Lastly, a consistent flow with no sounds suggests that the plumbing may be functioning properly without any leaks, as unusual sounds can often accompany water movement through pipes that are experiencing issues. Therefore, the presence of water stains serves as a clear warning sign of potential leaks in your plumbing system.