How to Shut Off Water in Emergency

How to Shut Off Water in an Emergency

When a pipe bursts, a faucet won't stop, or a toilet overflows, knowing how to shut off the water immediately can prevent thousands of dollars in damage. Here's where every shut-off valve is and how to use it.

The 3 Levels of Water Shut-Off

Level 1: Fixture Shut-Off Valves (Fastest)

Every fixture in your home has its own shut-off valve. Use these first — they only affect one fixture and don't cut water to the rest of the house.

Toilet: Oval valve on the wall behind the toilet. Turn clockwise to close.
Sink: Two valves under the sink (hot and cold). Turn clockwise to close.
Washing machine: Two valves on the wall behind the machine. Turn clockwise to close.
Dishwasher: Usually under the kitchen sink on the hot water supply line.
Water heater: Valve on the cold water inlet pipe at the top of the heater.

Level 2: Main House Shut-Off Valve

Shuts off all water to the house. Use when you can't find the fixture valve or when multiple fixtures are affected.

Where to find it:

Basement or utility room — on the pipe where water enters the house
Crawl space — near the foundation wall
Outside — in a box near the foundation or in the garage
In warm climates — sometimes outside near the water meter

How to close it:

Ball valve (lever handle): Turn the lever 90° so it's perpendicular to the pipe — closed
Gate valve (round wheel): Turn clockwise until it stops — may take many turns

Level 3: Water Meter Shut-Off

If the main house valve is inaccessible, stuck, or broken, shut off at the water meter:

👉 Water meter shut-off key — T-handle tool that fits standard water meter valves. The meter is usually in a box in the ground near the street or sidewalk.

Note: In some areas, only the utility company is authorized to operate the meter valve. Know your local rules before an emergency happens.

Do This Now (Before an Emergency)

Find your main shut-off valve today and make sure it works — turn it off and back on
Label it clearly so anyone in the household can find it
Find the fixture shut-off valves under every sink and behind every toilet
Keep a water meter key accessible in case the main valve fails
Make sure every adult in the household knows where the main shut-off is

After Shutting Off the Water

Open faucets to drain remaining water from the pipes and relieve pressure
Mop up water immediately to prevent damage
Turn off electricity to any affected areas
Apply a temporary pipe fix if needed — see our guide on How to Fix a Burst Pipe Temporarily

Bottom Line

Know where your main shut-off valve is before an emergency happens — find it today and make sure it works. In an emergency, shut off the closest fixture valve first, then the main valve if needed. Keep a water meter key accessible as a backup.

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