The line running from the street meter to the house fails quietly. A wet patch in the yard that never dries, dropping water pressure inside, or a bill that climbs with no change in usage are the usual first signs, well before any water shows up at the surface.
There is not much to check on your own beyond noting where the ground stays wet and whether the water meter dial moves when everything inside the house is off, since that points to a leak somewhere in the line. If the yard is actively pooling or the street shows water, shut off the main and call.
The plumber we connect you with in Bell Gardens, CA can pinpoint the break with leak detection equipment before any digging starts. Call (844) 898-0295 to get connected.