If you notice your water bill increasing a lot you may have a leak somewhere. There are many places you may have a leak including your water main line. But before going to that you need to check some simple things around the house. One thing to check is your hot water heater. It can be leaking and you would not notice, especially if your water heater is in the basement or some other out of the way location. This video explains what to look for to make sure your temperature pressure safety valve is not leaking.