The intense cold weather can produce more than frozen pipes, it can cause water heaters to fail. The temperature of water coming into the house in the winter time can be as low as 40-50 degrees. For a water heater to heat that water to 120 degrees or more takes more time which means that it is working harder to do its job. The mix of hot and cold water can stress/shock an older heater tank to the point that it will start leaking.
Keeping tabs on your water heater and its condition is always a good idea. Doing so however is especially important in the winter when the chance for a leak is greater.
This tip courtesy of Heffner Plumbing, Indianapolis. License #PC10100117, (317) 248-9668.