On a National City property with more than one household, the water main runs from the meter to the building and serves everyone inside it. When it fails, the leak runs on the meter, every unit can complain about pressure at once, and the wet ground may work on the property above it. The usual signs are a wet patch that stays, a meter that keeps turning with everything off, a house wide or building wide pressure drop, or a bill that jumped.
Tracing the service along with leak detection helps zero in on the failure, and in an older building that may turn out to be a failed fitting, a stretch hurt by ground movement or roots, or a galvanized run corroded through. The fix follows the evidence. It may be a targeted repair at the marked spot when the line warrants it, or a talk about replacing it when it doesn't, and where a pull suits the route, trenchless options can put in new line on an occupied property without an open trench through the parking or the common areas.
You get the findings explained plainly, the options with real tradeoffs and timelines, and documented findings for the file. A licensed contractor performs the work when you say go.
