Should you turn off the water before going on holiday?

Check the stop tap before departure day.

The answer in 2 lines. Turning off your home’s incoming water can limit the damage from a leak while you are away. First check that shutting it off suits your heating, hot-water system and any equipment that needs a supply. Test the internal stop tap in advance and check your insurance conditions. In cold weather, turning off the water does not replace frost protection. On your return, reopen the supply carefully, check for leaks and refresh water that has stood unused before normal use.

The first steps

Find and test your internal stop tap: make sure it serves your home alone and turns without force. Arrange a repair before travelling if it is seized or leaking.
Check heating and connected equipment: follow the operating instructions for your particular system, including frost protection and holiday settings.
Read your insurance documents: check the requirements for an empty home, then save any clarification from the insurer in writing.

Stop: danger

A stuck valve: do not force it or use a shared external valve as a substitute without checking whose supply it controls.
Draining a system: do not improvise. Incorrect draining or restarting can damage equipment; arrange a qualified professional if draining is necessary.

What turning off the water achieves

Closing a working internal stop tap stops fresh mains water entering the downstream plumbing. It can reduce the amount escaping from a failed hose or pipe. Water already in tanks, cylinders and pipework can still escape, so isolation is not a guarantee against damage.

Use the ABI’s frozen and burst pipe guidance to review precautions for an unoccupied home. Check the section about absence alongside your own policy rather than assuming everyone has the same conditions.

Before leaving

Test isolation: close the internal stop tap gently and check an appropriate mains-fed cold tap. Residual water may run before stopping; stored supplies behave differently. Close the test tap afterwards.
Record the starting position: photograph the meter if accessible and note which valves or controls you changed.
Check appliances: identify appliance isolation valves and follow the equipment’s instructions. Do not leave a washing cycle running as you depart.
Keep frost protection working: check whether the system needs electricity, fuel or another supply. Do not switch everything off at the consumer unit without considering this.
Arrange access: give a trusted person agreed access and clear instructions about the stop tap. Tell them how to contact you if they discover damp or a leak.

What not to do

Assuming closing the stop tap prevents the remaining water in pipes from freezing.
Copying another household’s boiler settings without checking your own system.
Using the external stop tap without establishing whether it affects neighbours.
Treating an unchanged meter reading as proof that the entire plumbing system is sound.

When you return

Look for damp or obvious damage before restoring the supply. Reopen the stop tap gradually and check accessible joints, appliance connections and toilets. If you suspect frozen pipework or find a leak, keep the supply isolated and arrange help.

Refresh unused outlets before normal use. The council’s domestic water-hygiene guidance explains precautions after an absence: follow its flushing advice while avoiding spray exposure and scalding. For hot-water equipment, follow the system’s restart instructions; do not energise an empty cylinder.

If the property has been empty for a prolonged period, or you cannot establish how its system was maintained, ask for advice before using it normally.

Insurance and rented homes

Ask your insurer when absence conditions apply, whether heating or draining is required and whether someone must inspect the home. There is no universal holiday allowance or claim-reporting deadline stated here. If damage occurs, report it promptly and follow the policy’s instructions about emergency repairs and evidence.

If you rent, tell your landlord about a defective stop tap before travelling. Read GOV.UK’s repairs guidance to check responsibility for water installations. Agree arrangements for any shared system rather than altering it yourself.

Good to know

For rented homes, the HSE’s landlord guidance explains water-hygiene responsibilities; use its tenant-information section when discussing precautions with your landlord.
This guide covers England. Tenancy rules differ in Wales, Scotland and Northern Ireland, and insurance conditions always depend on the policy.

Illustrative example: before a winter holiday, Aisha in Sheffield tests her stop tap, checks her heating instructions and confirms her insurer’s absence requirements. She leaves agreed access with a trusted neighbour. On returning, she checks for leaks, restores the water and follows the water-hygiene advice before showering.

A made-up story, for illustration.

Bobby

Sources, verification, confidence

Verified on 4 November 2026, for England. Confidence: high for considering water isolation, frost precautions and refreshing unused outlets; medium for the appropriate heating and restart arrangements, which depend on the installation. Insurance requirements must be checked against the individual policy.