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10 signs of a hidden water leak
- A water bill that rises without a change in usage.
- The meter moves with everything off. Run the meter test.
- Stains or bubbling paint on ceilings or walls, especially below bathrooms.
- Musty odour or visible mold in cabinets or closets.
- Warped, cupped, or soft flooring near tubs, toilets, dishwashers, or fridges.
- Sound of running water when nothing is on.
- Warm spots on the floor, which can point to a hot-water slab leak.
- Low water pressure throughout the house.
- Cracks in the foundation or unusually green, soggy patches over the service line.
- Toilet refilling by itself ("phantom flush").
One sign alone may be innocent. Two or more together justify a professional leak check.