While you wait
Keep the problem contained until help arrives
If the main water valve is somewhere you already know and can reach without risk, turn it off. Leave any overflowing or leaking fixture alone, and stay well back from water near outlets, appliances or the water heater's controls.
Never step into water to get to the breaker panel. When the electricity cannot be switched off safely, leave that to an electrician, and leave any room that feels unsafe. Belongings and cleanup can wait until everyone is clear.
