How do I know a pipe burst inside a wall in our Hemet home if I cannot see water?

The signs are sound and surface before they are water: a faint hissing or running sound with every fixture off, a section of wall that feels damp or unusually warm or cool, paint that bubbles in one stud bay, or a water bill that jumped with no change in use. Hemet operator copy names burst pipes inside walls as this city's recurring pattern precisely because the valley's older lines fail inside cavities and run quietly. Shut the main off if the meter spins with everything closed, and have the wall read with a moisture meter before anyone opens it: the meter map decides where the single opening goes.