Sometimes utility companies require a deposit before turning on your utilities at a certain address, I'm sure it is because they have had non-paying customers at that address before.
Morgan Spurlock also had to pay a deposit in his show 30 Days, and he commented about how it was the first time in his life he had to pay a deposit, and it must have been the address he was living in. (He was living with a minimum wage for 30 days in the episode, so he moved into a low rent apartment in Ohio.)