Should you shut off the water before a vacation?

A quick plumbing check now can prevent a difficult homecoming.

The answer in 2 lines. Shutting off the domestic water supply can limit damage from an unattended leak, provided your home’s systems allow it. First check fire sprinklers, heating equipment and other appliances that need water. Follow your water heater’s instructions, keep appropriate freeze protection and review your insurance policy. Closing a valve does not drain the pipes or winterize the home. When you return, reopen slowly, inspect for leaks and flush unused fixtures before normal use.

The first steps

Identify the correct valve before departure day. Confirm it serves your domestic plumbing and that closing it will not disable fire protection or equipment requiring water. Renters should check with building management.
Check for an existing leak. Photograph the meter if accessible and inspect supply hoses and visible connections. Use EPA’s home-maintenance guidance to compare meter readings while water use is stopped.
Plan for the water heater and weather. Follow the equipment manual’s absence instructions, check your policy and leave a trusted person with access and emergency contact information.

Stop: danger

Fire sprinklers: do not close a valve that disables them. If the arrangement is unclear, have a qualified professional identify a safe domestic shutoff.
Freezing conditions: turning off the water does not remove water trapped in pipes. Keep suitable heat or arrange professional winterization.
Water heater: never energize an electric storage heater that may be empty. If it has been drained, have it refilled and restarted according to its instructions.

Before you leave

Domestic shutoff: if the system permits, close your accessible household valve gently and confirm at a faucet that the supply stops. Close the faucet afterward. Do not force a stuck valve or operate utility-owned equipment.
Appliances: check washer, dishwasher and refrigerator supply connections. If the main must remain open, consider isolating individual appliances where their instructions permit.
Water heater: use the prescribed absence setting or shutdown procedure. Vacation mode is equipment-specific. The Department of Energy’s water-heater guide explains operating modes; check your own manual for the procedure.
Other systems: confirm the needs of hydronic heating, treatment equipment, irrigation and water-powered backup equipment before interrupting supply.
Access: leave clear instructions showing the valve location, the systems left running and how to reach you.

The U.S. Fire Administration’s sprinkler guide explains that home sprinklers can share the household water supply. Use that information to check your arrangement before choosing a shutoff valve.

What not to do

Assuming a closed main prevents every kind of water damage: stored water, drain backups and water entering from outside remain possible.
Turning off the home’s heat during freezing weather without a complete winterization plan.
Draining a water heater as a routine vacation task without following its shutdown instructions.
Leaving a known leak or an inoperable shutoff valve until the moment you depart.

When you return

Look for dampness before restoring normal service. Reopen the domestic valve slowly, stay nearby and check accessible fixtures, appliance connections and the water heater. If a leak appears, close the appropriate valve again and arrange repair.

Flush fixtures that have not been used for a week or more. CDC’s household guidance, published in 2024, says to run cold water fully for two minutes, then run hot water until it starts to feel hot. Follow the linked steps at each unused faucet or shower, keeping clear of scalding water.

Check for local water advisories before drinking. Follow any specific instructions issued after a supply disruption or plumbing work. If your heater was shut down or drained, follow its refill and restart procedure before expecting hot water.

What your insurance policy may require

Read the sections on freezing, reasonable care, vacancy and unoccupancy. Ask your insurer which precautions apply to your trip, including heat, water shutoff, draining or inspections, and keep the written answer. A vacation does not automatically meet a policy’s definition of vacancy.

The NAIC’s burst-pipe guidance explains that sudden accidental plumbing damage may be covered, while failure to take required freeze precautions can affect coverage. Use it to prepare questions about your policy. Requirements and claim rules vary by policy and state; there is no universal US vacation shutoff deadline.

If you discover damage, stop further loss when safe, photograph it, preserve receipts and report it promptly under your policy’s instructions.

Good to know

Extended utility shutoff may require an appointment. Waterford, Michigan’s official instructions show how local customers request shutoff and restoration; elsewhere, confirm the procedure using the contact on your water bill.
A meter comparison needs context: irrigation or equipment connected before the domestic shutoff may still register water use.

Illustrative example: before leaving, a homeowner confirms which valve isolates household fixtures without cutting sprinkler service. He follows the heater’s absence instructions, keeps freeze protection running and leaves access with a trusted neighbor. On return, he checks for leaks and flushes unused fixtures.

A made-up story, for illustration.

Bobby

Sources, verification, confidence

Verified on November 4, 2026, for the United States. Confidence: high for household flushing guidance and the need to preserve sprinkler service; medium for shutdown arrangements, which depend on equipment and plumbing. Insurance obligations require confirmation against the individual policy and applicable state rules.