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How to Prevent Water Damage While You're on Vacation

Last updated October 25, 2026

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The short answer

Shut off the Main Water Supply

The single most effective step is to turn off the main water shutoff valve before you leave. This stops water from entering your home's pipes, so a burst pipe or a dripping appliance cannot cause damage. Locate the valve, usually near the water meter or where the main line enters the house. Practice turning it off and on so you know it works.

If you live in Kirkland, keep the valve location written down and share it with a trusted neighbor. If you have a well or a sprinkler system, you may need to shut off additional valves. Turning off the water also protects against leaks from washing machine hoses, ice makers, and toilet supply lines. It is the simplest and most reliable prevention.

Drain Pipes and Protect Fixtures

After shutting off the main supply, open all faucets and flush toilets to drain water from the pipes. This reduces pressure and prevents freezing in cold weather. Then turn off the water heater to avoid heating an empty tank, which can damage it. For extra safety, consider adding antifreeze to toilets and drains if you have a seasonal property.

If you cannot shut off the water, leave a faucet dripping slightly to keep water moving and reduce pressure. Ask a neighbor to run taps and flush toilets every few days. This keeps rubber seals from drying out and cracking. It also helps you catch a leak early if something goes wrong while you are away.

  • Turn off the main valve and drain all faucets
  • Flush toilets to empty the tanks
  • Turn off the water heater
  • Open cabinet doors under sinks to allow air circulation
  • Insulate exposed pipes if cold weather is expected

Unplug Appliances and Check Hoses

Unplug washing machines, dishwashers, and refrigerators with ice makers to prevent water hammer or electrical issues. Inspect supply hoses for bulges, cracks, or loose connections before you leave. Replace any worn hoses, as they are a common source of leaks. If you have a sump pump, ensure it is working and consider a backup battery.

Check your water heater for signs of rust or corrosion. A failing water heater can leak while you are away. If you have a second floor, pay attention to the ceiling below bathrooms and laundry areas. A small drip can become a major problem in a week. Taking a few minutes now can save you from a flooded home.

Arrange a House Check and Leak Detection

Ask a trusted neighbor, friend, or relative to check your home every few days. Give them a key and clear instructions on where to look, such as under sinks, around the water heater, and near appliances. This person can also bring in mail and packages, making the home look occupied. If a leak occurs, they can shut off the water and call a plumber.

Consider installing a smart leak detection system that sends alerts to your phone. These devices sense water and can automatically shut off the supply. Many models are simple to install and do not require professional help. Even a basic alarm in the basement or crawlspace can alert a neighbor. This adds a layer of protection beyond just turning off the water.

Prepare for the Unexpected

Even with precautions, leaks can happen. Take photos of your home's interior and exterior before you leave, including appliances and plumbing areas. This helps with insurance claims if damage occurs. Keep your insurance policy documents accessible and know your deductible. If you are a vacation rental owner, consider a separate policy for rental properties.

If you return to find water damage, act quickly. Turn off the water and electricity if safe, and remove standing water to prevent mold. Call local water damage pros to assess and dry the affected areas. The longer water sits, the more damage it causes. For severe cases, professional drying and restoration may be necessary. Check your policy to understand what is covered. Policies vary, and your insurer decides what is covered.

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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 I can't turn off the main water valve?

If you cannot turn off the main valve, leave a faucet dripping to reduce pressure. Ask a neighbor to run water and flush toilets daily. Consider installing a leak detection system that alerts you or a neighbor. If the valve is stuck, call a plumber to repair it before you leave.

Should I turn off the water heater when I'm away?

Yes, turn off the water heater after you drain the pipes. An empty tank can overheat and be damaged. If you leave water in the tank, keep the heater on to prevent bacteria, but ensure the water supply is off. Check your manufacturer's instructions for safety.

How often should someone check my home during vacation?

Every two to three days is a good rule. This allows someone to catch a leak early before it causes major damage. They should check under sinks, around the water heater, and near appliances. If you have a basement or crawlspace, include those areas in the check.

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