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How Do I Turn Off Water to My House From the Outside?

Published in Plumbing Basics 3 mins read

To turn off the water supply to your house from the outside, locate the main shut-off valve and turn it clockwise. Here's a more detailed explanation:

1. Locate the Main Shut-Off Valve:

  • Near the Water Meter: The most common location is near your water meter, which is usually found in a pit in the ground, often near the street or sidewalk. You may need a meter key or a large wrench to open the meter box.

  • On an Outside Wall: Another possible location is where the water line enters your house, typically on an outside wall near the front of the house. Look for a valve on the exterior wall.

2. Identify the Valve Type:

  • Handle Valve: This valve usually has a handle that you can grip and turn.
  • Key Valve (also called a Curb Stop): This valve requires a special tool called a curb key or meter key to operate.

3. Turn Off the Water:

  • Handle Valve: Turn the valve handle clockwise until it stops. This will shut off the water supply to your house.

  • Key Valve: Insert the curb key or meter key onto the valve stem inside the meter box. Turn the key clockwise a quarter or half turn (90 to 180 degrees) until the water is shut off. The exact amount of turn may vary.

Important Considerations:

  • Test the Shut-Off: After turning off the valve, turn on a faucet inside your house to verify that the water is indeed shut off. If water continues to flow, the valve may not be fully closed or may be faulty.
  • Difficult Valves: If the valve is difficult to turn, don't force it. You may need to apply penetrating oil lubricant or call a plumber.
  • Emergency Situations: Knowing the location of your main shut-off valve is crucial for quickly stopping water flow in case of a burst pipe or other plumbing emergency.
  • Notify Occupants: Inform all residents of the house before turning off the water so they can prepare accordingly.
  • Opening the Valve: When turning the water back on, do so slowly to avoid water hammer, which can damage pipes.

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