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How to Turn Off a Homes Main Water Supply

Step by Step: Turning Off the Main Water Supply


As a homeowner, it’s important to know how to turn off the main water supply in case of an emergency or when completing plumbing work. Follow these steps to safely turn off the main water supply for your home:

Main water supply
  1. Locate the water supply valve This valve is typically located in a utility room, basement, or crawl space. It may also be located outside near the water meter or in a cabinet under the kitchen sink. The valve is usually a round handle or lever that is marked with the words “water,” “main,” or “shut off.”
  2. Turn off the power to the water heater. If the main water supply valve is located near the water heater, make sure to turn off the power to the water heater before proceeding. This can usually be done by switching off the circuit breaker or turning off the gas valve.
  3. Turn off the water supply Once you have located and turned off the power to the water heater (if necessary), you can turn off the water supply line. Depending on the type of valve you have, you may need to turn the handle clockwise or lever the handle down. If the valve is stuck or difficult to turn, you may need to use a pipe wrench or pliers to loosen it.
  4. Test the water supplyTry turning on a faucet or flushing the toilet to see if the water is still flowing. If the water is still running, you may need to check for other shut-off valves or consult a professional plumber.

When should I turn off house water ?

It’s important to note that turning off the main water supply will also turn off the water to your home’s appliances, such as the washing machine and dishwasher. Make sure to turn off the water supply only when necessary and remember to turn it back on when you are finished with your plumbing work.

It’s also a good idea to locate and familiarize yourself with the main water supply valve in case of an emergency, such as a burst pipe. In these situations, it’s important to act quickly to minimize water damage.

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