BEFORE THE CALL
What safe checks can you make first?
You do not need to break concrete or remove flooring to start gathering useful information. Turn off obvious fixtures and appliances that use water, then listen for continued water movement. If your property has an accessible water meter and you know how to read it, note whether it continues to register use while the home is inactive.
Look for surface clues such as damp spots, warm flooring, staining, peeling materials, or moisture near the slab edge. Do not cut into the floor or foundation to hunt for a leak. If water is actively spreading, prioritize shutting off the appropriate water supply and protecting the area from further damage.
Warning: If electrical equipment or outlets are exposed to water, avoid the affected area and use appropriate emergency precautions rather than attempting a plumbing repair yourself.