What is a common sign of plumbing leaks in a home?

One of the most common signs of plumbing leaks in a home is stains or discoloration on ceilings or walls. This occurs when water from a leak seeps through surfaces, causing visible damage. The presence of water can lead to staining, which may appear as brown, yellow, or darker spots on structural elements. Over time, these stains can grow larger, indicating ongoing leakage and potentially leading to more significant issues such as mold growth or structural damage.

In contrast, while persistent odors may indicate other plumbing issues or sewer gas problems, they are not a direct sign of a typical plumbing leak. Rust on fixtures, while it can be associated with moisture or corrosion, may not specifically link to an active leak. Excessive water bills can suggest a leak but are not always visible signs; they require monitoring and comparison to previous bills to establish a leak's presence. Stains or discoloration provide a clear, visual indication that should prompt further investigation into potential plumbing violations.