TL;DR: Before you head out for a trip, shut off your main water supply. Can't do that? At least close the lines to your washer, dishwasher, and toilets. A little leak that springs up while you're gone just keeps running, and it'll wreck your floors, cabinets, and drywall long before...
Protect Your Home on Vacation: Water Shut-Offs
Turning off your home's water supply before vacation is one of the best ways to protect your property. Water leaks can occur at any time. These leaks become particularly dangerous when you're away and unaware of the situation. A faulty appliance could flood your home for days if you leave...