Quick answer
- Higher water bill
- Damp floors / drywall
- Musty smell
- Water noise when fixtures are off
Easy checks
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1. Toilet dye test
Add a few drops of dye to the tank. If color shows in the bowl after 10-15 minutes, there is likely a leak.
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2. Check under sinks & around appliances
Look for moisture, corrosion, or staining near supply lines, traps, and shutoff valves.
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3. Check exterior hose bibs
Inspect hose bibs, irrigation connections, and visible exterior lines for dripping or wet spots.
Pro Tip
Higher bill & wet/damp spots are classic slab leak signs. A slab leak may cause less obvious wet flooring, a warm spot, musty odor... and it is below your house. You need a pro.
