Before a trip, a few minutes of checking the plumbing can make an unnoticed leak less likely to turn into a large repair. Focus on visible problems and the equipment you know how to operate safely.
Walk through the home
Look below sinks and around toilets for drips or damp flooring. Check that taps are fully closed and listen for a toilet that keeps refilling. If your washing machine or dishwasher has an accessible supply connection, look for signs of moisture around it as well.
Do not leave a known leak for your return. A small drip can continue for days while the house is empty. Book a plumbing visit before you leave if a fixture or pipe needs attention.
Know your water shutoff
Find the main shutoff and make sure it is accessible. Whether to close it for a trip depends on your home, its heating system, and any equipment that needs water while you are away. If you are unsure, ask a qualified professional before changing anything. If someone will check the home, show them where the shutoff is and how to reach you.
Follow the equipment instructions
Some water heaters have an away or vacation setting. Use only the setting and procedure specified by the manufacturer for your model; do not improvise changes to gas controls or a pilot light. In cold weather, keep enough heat on to protect the home and its plumbing.
Take one final look at the outdoor taps, garden hoses and any irrigation equipment. When you return, check the same leak-prone spots again before settling back in.