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How Do I Shut off My Home's Water During an Emergency?

Last updated October 25, 2026

The short answer

Find Your Main Shutoff Valve Now

Knowing your main shutoff valve's location is the most critical step. It is usually found where the main water supply pipe enters your home's foundation. Check common areas like the garage, utility room, or near the water heater. The valve itself is a round wheel for a gate valve or a lever for a ball valve. Familiarize yourself with it before a pipe bursts or a major leak occurs.

How to Turn off the Water

To operate a traditional gate valve, turn the round wheel handle clockwise until it fully stops. Do not force it, as older valves can be stiff or corroded. If you have a modern ball valve, simply turn the lever a quarter turn so it is perpendicular to the pipe. This action blocks the water flow to your entire home, stopping any active leaks from internal plumbing fixtures or pipes.

Locating Individual Fixture Shutoffs

For a localized leak, you can shut off water at the specific fixture. Look for small valves on the supply lines beneath sinks, behind toilets, or near washing machines. Turning these valves clockwise stops water to that appliance or faucet only. This lets you keep water on to the rest of the house. If you cannot find a fixture's shutoff, you must use the main house valve.

  • Under-sink cabinets often have two small valves for hot and cold water.
  • Toilets have a single supply valve near the floor behind the bowl.
  • Washing machine valves are typically on the wall behind the appliance.
  • Water heaters have a dedicated cold water inlet valve on top.
  • Outdoor hose bibs may have their own shutoff inside the home.
  • Some newer homes have labeled shutoff panels for easier identification.

What to Do After the Water Is Off

Once the water is off, open a few faucets on the lowest floor to drain remaining water from the pipes. This relieves pressure and helps prevent further dripping. Then, assess the source and extent of the water damage. Move furniture and belongings away from wet areas if it is safe to do so. Quick action helps minimize the spread of water and reduces the potential for mold growth.

When to Call for Professional Help

If a leak is extensive, involves contaminated water like sewage, or has soaked into walls and flooring, you need professional water damage restoration. Local water damage pros have industrial equipment for thorough extraction and drying. They can document the damage for an insurance claim. Policies vary, and your insurer decides what is covered. For a burst pipe or flooding, securing the water source is your first urgent task before cleanup begins.

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Water keeps spreading into floors and walls, so it is worth acting early. Calls are answered 24/7.

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Frequently asked questions

What if my main shutoff valve is stuck or broken?

Do not force a stuck valve, as it could break and cause more damage. In this case, you may need to call a plumber to repair or replace it. As a temporary measure, you can contact your water utility to have the water shut off at the street curb box. Always have a plumber address a faulty main valve promptly.

Does shutting off the water prevent all damage?

Shutting off the water stops new water from flowing, but it does not remove water that has already leaked out. That water can soak into materials, causing swelling, warping, and mold growth within a day or two. Prompt water extraction and drying are essential to prevent this secondary damage.

How do I know if I have a gate valve or a ball valve?

A gate valve uses a round wheel you turn multiple times. A ball valve has a lever you move a quarter turn. Knowing which you have helps you act quickly. Ball valves are generally more reliable, while older homes often have gate valves. Check your valve type before an emergency occurs.

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