The water balance is established considering the production of AAA minus the consumption authorized to calculate the losses. Authorized consumption includes the entire volume of water that was used with authorization from the AAA. This volume can be billed or unbilled, just as it can be measured or estimated. Authorized uses include water served to customers and water used for system maintenance, among others. Total water loss is composed of physical losses and business losses. Business losses include unauthorized uses, measurement inaccuracies, and data errors. Physical losses include tank leaks and overflows.