How Do I Know If a Pipe Burst Inside My Wall?

A persistent hissing or dripping sound from inside a wall, even when all faucets and appliances are off, is a strong indicator. This steady noise suggests water is escaping under pressure from a crack or break. While some plumbing noise is normal, anything continuous and localized warrants investigation. Ignoring these sounds can allow a small leak to grow into a major burst.

Your water meter is a reliable tool for detecting unseen leaks. First, ensure no water is being used inside or outside your home. Then, watch the meter's flow indicator; if it moves, you likely have a leak. A sudden, unexplained spike in your monthly water bill is another major red flag pointing to significant water loss from a broken pipe.

• Locate your water meter, often in the basement or near the street.
• Turn off all water-using appliances, fixtures, and irrigation systems.
• Watch the small triangular flow indicator or the last digits on the dial.
• If the indicator moves or the digits change, water is flowing somewhere.
• Note the reading, wait two hours without using water, and check again.
• A change confirms a leak that requires immediate attention.

A persistent musty, earthy smell in a room often means hidden moisture is present. This odor comes from mold or mildew growing on wet building materials like drywall and wood. You might also feel a cool, damp spot on a wall or floor, even if it looks dry. In humid conditions, these problems can develop rapidly after a pipe fails.

• A persistent earthy or moldy smell in a specific room or hallway.
• Walls or floors that feel cool and damp to the touch.
• Soft, spongy drywall that gives slightly when pressed.
• Swelling or warping of baseboards, cabinetry, or door frames.
• Condensation or beads of water on the surface of a wall.
• The sound of dripping water becoming audible in a quiet house.