What's the number one concern for winter plumbing? Frozen pipes! The fastest way to frozen pipes is to leave water exposed to the elements outside of your house when the temperatures drop. To protect your pipes, it's a good idea to get a frost proof sillcock. Frost proof, or frost free sillcocks allow you to have access to water outside of your house (for a hose, sprinkler, etc) but keeps the water between 8 and 14 inches inside of your house through a long stem, so the water (and the pipes) won't freeze when it gets cold outside.
Sillcocks and frost-free sillcocks can be found at www.supplyhouse.com