First minute: protect people, not property

Keep people and pets out while you screen for water near electrical equipment, standing water, sewage or other contamination, a sagging or bulging ceiling, structural movement, gas odor, or rapid uncontrolled flooding. Leave the affected area when any is present. Call 911, the fire department, utility, property emergency line, or appropriate licensed trade as the condition requires.

Do not cross the electrical boundary

Ready.gov says not to touch wet electrical equipment or stand in water because the scene may be energized. Do not unplug appliances, operate breakers while wet or standing in water, use a voltage tester, or assume rubber boots make entry safe. Power isolation is only for a dry, safely reachable disconnect and should otherwise be handled by the utility or qualified responder.

Stop incoming water only when the route is safe

If the floor and access route are dry and stable, the valve is clearly the fixture or owner customer valve, and it operates normally, close it according to its instructions. Do not force a stuck or corroded valve, manipulate a sealed or wired meter, or use an unidentified utility valve. Call the utility or licensed plumber when safe isolation is uncertain.

Limit spread without entering the hazard

Move dry, safely reachable contents away from the edge of the affected area. Place a container or absorbent material only where you can remain on a dry, stable surface and outside any ceiling-collapse or electrical zone. Do not stand under saturated ceiling material, open a wall, repair the pipe, or handle contaminated water.

Create a first-five-minutes record

From a safe position, take wide and close photos, note the time discovered, apparent source location, water color or odor without direct contact, affected rooms, and who was called. Start a simple timeline of shutoff attempts, utility or trade arrival, and visible change. Contact the insurer promptly if a claim may be involved and ask what documentation and emergency mitigation it requires; coverage is policy-specific.

Begin drying only after hazards and source are controlled

EPA advises fixing the water source and drying wet areas within 24–48 hours as mold-prevention guidance. That timing does not make an electrically unsafe, contaminated, structurally unstable, hidden, or extensively saturated scene a DIY project. Use experienced restoration or environmental help when you cannot safely expose and dry all affected material.

Match the call to the problem

Use a plumber for the pipe or customer shutoff, an electrician for electrical involvement, the utility for utility-side water control or public hazards, a qualified building professional for instability, and a restoration firm for substantial drying and material recovery. One contractor may not cover every hazard; source repair, electrical clearance, and drying are separate decisions.

Sources

Use The Water Leak Emergency Triage Guide