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How to Safely Turn off Water to Individual Appliances

Last updated October 25, 2026

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The short answer

Find the Shutoff Valves

Most water-using appliances, like washing machines, dishwashers, and refrigerators with ice makers, have a small shutoff valve on the supply line. Look behind the appliance or under a sink for a small lever or knob. It may be a quarter-turn ball valve or a multi-turn gate valve.

If you cannot find a valve, check the owner's manual or look for a shutoff on the branch line that feeds that area of your home. In some older homes, individual valves were never installed, so you will need to use the main shutoff for the whole house.

Turn off the Valve Correctly

For a lever-style valve, turn the handle so it sits perpendicular to the pipe. For a round wheel or knob, turn it clockwise until it stops. Do not force it. If it resists, stop and check that you are turning the right way.

After closing the valve, open a cold water faucet on the same floor to drain the line and release pressure. This also tells you whether the valve actually shut off the flow. If water keeps running, the valve may be faulty, so shut off the main supply instead.

  • Turn lever valves so the handle is crosswise to the pipe
  • Turn knob valves clockwise until they stop
  • Open a faucet to drain pressure after closing
  • Never force a stuck valve, use the main shutoff
  • Label each valve with its appliance for future use

When the Valve Is Missing

In many homes, especially older ones, individual appliance valves were never installed. To work on such an appliance, you must shut off the main water valve for the entire house. This is usually located near the water meter, in a basement, or in a utility closet.

Before you shut off the main valve, tell everyone in the house so they are not caught mid-shower. Once you finish the repair, turn the main valve back on slowly and check for leaks at the appliance before using it again.

Check for Leaks After Turning On

After you have made your repair or maintenance, turn the appliance valve back on slowly. Then inspect the connections for drips or moisture. A small leak can quickly become a bigger problem, especially on a washing machine or dishwasher.

If you notice any leak, tighten the connection gently or replace the washer or hose. Do not leave the appliance running unattended until you are sure the connections are dry. If the leak persists, you may need to call a plumber to inspect the supply line.

Prepare for Emergencies

Knowing where your shutoff valves are before an emergency saves valuable time. Walk through your home and identify every shutoff for each appliance and the main valve. Write down the locations and keep the list near your main breaker panel or on your phone.

If you live in Sammamish, keep your shutoff valve location written down. The wet winters and dry summers in the Pacific Northwest mean freezing damage is less common, but leaks can happen anywhere. Knowing your valves helps you act quickly to limit water damage.

  • Label valves with a tag or marker
  • Keep a list of valve locations in a visible spot
  • Test each valve once a year to prevent sticking
  • Know the main shutoff location too
  • Show family members how to use the valves

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Frequently asked questions

What if the valve is stuck and will not turn?

Do not force it. A stuck valve can break and cause a flood. Instead, shut off the main water supply to your home, then try to loosen the valve with penetrating oil. If it still will not move, call a plumber to replace it before you attempt any appliance work.

How do I know which direction to turn the valve?

Most valves close by turning clockwise, which is the same direction as a standard faucet. Lever valves close when the handle is perpendicular to the pipe. If you are unsure, turn slowly and check if water flow stops at a nearby faucet. If it does not, turn the other way.

Should I turn off the water before every appliance repair?

Yes, always shut off the supply before any repair, even a simple washer replacement. Releasing pressure first by opening a faucet prevents a spray of water when you disconnect the hose. This simple step keeps you dry and prevents water from damaging your floor or cabinets.

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