Signs include warm floors, high water bills, or damp carpet. You might also notice water trickling sounds behind walls, unexplained spikes in your water bill, or soft spots underfoot.
Turn off all water-using appliances, showers, sinks, washing machines, and sprinklers, then check your water meter. The triangular leak indicator discs should not be spinning if everything is truly off. If they’re still moving, you likely have a leak somewhere in your system that needs professional detection.