She said the pennies were eventually taken in the back to be counted, which took more than two hours.
Officials with the city of Deltona have said if customers have concerns about high water bills, they can work with the city to check for leaks, which could be causing the problems.
Officials said customers should contact the city as soon as they identify a red flag in their bills.
McCool said she feels more needs to be done to help customers.
"I just wanted to make a statement. I want other people to come forward that has this bill. This is a far-reaching issue,” she said.