How to Find a Hidden Leak Before It Drains Your Wallet

Check Your Water Meter First

Turn off every faucet and appliance that uses water, then look at your meter. If the low-flow indicator is still spinning or the dial is moving, water is going somewhere. That's your confirmation a leak exists — the only question is where.

This two-minute test catches leaks you'd otherwise never notice until the bill arrives.

Watch Your Water Bill

A sudden, unexplained jump in usage is one of the most common ways hidden leaks reveal themselves. Compare month to month, and if usage climbs without a change in habits, start looking. A toilet running silently can waste hundreds of gallons a week.

Common Hiding Spots

Toilets (a worn flapper leaks silently into the bowl), slab leaks under concrete foundations, pinholes in copper lines behind walls, water heater drain pans, and supply lines under sinks or behind washing machines. Damp drywall, a warm spot on the floor, mold, or a musty smell are all clues.

Slab leaks are especially common in older South Bay homes — they can run hot enough to warm a section of floor.

When to Call a Pro

If the meter says you have a leak but you can't find it, or you see damp drywall or warm flooring, call before it gets worse. We use acoustic and camera-based leak detection to pinpoint the source with minimal drywall or concrete removal — far cheaper than waiting until mold or foundation damage forces a major repair.