The Water Department has responded to a number of reports of frozen pipes due to the extreme cold.
Allowing your faucet to run cold water at a very light stream may help prevent your pipes from freezing and/or bursting.
Please also try to keep the area where your water meter is housed warm to prevent it from freezing and breaking. If you are on Town water, your meter is most likely in a basement or utility closet.
The American Red Cross also provides some useful information on its website.