What should I do before the plumber arrives?
Your first job is to slow the water. A few calm minutes can save a ceiling.
- Find the shutoff. Look under the fixture first. Then look for the unit shutoff, often near the kitchen or bathroom, and the main valve for the apartment or house.
- Tell the building. Call the superintendent or managing agent. They know where the riser valves are and can often close the line that feeds your unit.
- Protect what you can. Move rugs, electronics and paperwork. Put buckets under drips. Do not stand in water near outlets.
- Turn off the water heater if the tank is leaking and you can reach the control safely.
- Take photos and short videos. Insurers, boards and neighbors often ask for them later.
If you cannot find a shutoff, do not force old valves. Many valves in older buildings have not moved in decades and can snap. Leave that to the plumber and the building staff.

