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Home emergencies4 minUpdated on 20 June 2026

Water leak: what to do before calling a plumber?

The right reflexes to limit the damage before a plumber arrives: turn off the water, secure the area and document the problem.

Two men turning off the water supply under a leaking sink

To remember

  • Turning off the water is the top priority.
  • The photos speed up the plumber's diagnosis.
  • For an active leak, choose “As soon as possible”.

What to do right away

A water leak requires a quick reaction, even if it seems small. A few minutes can be enough to damage a piece of furniture, a wall or the neighbor's home. The priority is to limit the flow and secure the electrical elements around the affected area.

  • Turn off the local shut-off valve or general water supply.
  • Keep electrical appliances away and turn off the power if necessary.
  • Place a basin or towel to limit the spread.

Useful information to pass on

Before contacting a plumber, take two or three sharp photos. Show the escape, the environment, and the access. These elements help the service provider to know whether to provide a seal, a hose, a siphon, a specific tool or a more in-depth search.

“As soon as possible” timing or quote: how to choose

If the water is still flowing or you cannot shut off the supply, choose a service with “As soon as possible” timing. If the problem is stable and you want to replace a part or renovate the installation, a quote request is sufficient.

Frequently asked questions

What is the first thing to do in the event of a water leak?

Turn off the water supply if possible, protect nearby electrical outlets, and avoid dismantling the installation if you are unsure.

Does a water leak justify an emergency?

Yes, if the water is still running, if the ceiling is affected, if a room fills up, or if you can't pinpoint the source of the leak.