1. “Commercial user” means a customer discharging wastes into the sanitary sewer system who cannot be classified as a residential user or an industrial user.
2. “Dwelling” means a house, an apartment, or a portion of a house or building divided from the remainder of the house or building so as to be a private living section and containing a kitchen or cooking facilities.
3. “Industrial Class A User” means an industrial user discharging wastes into the sanitary sewer system with a B.O.D. concentration of less than 100 mg/l and a Total Suspended Solids concentration of less than 100 mg/l.
4. “Industrial Class B User” means an industrial user discharging wastes into the sanitary sewer system with a B.O.D. concentration of 100 mg/l or more or a Total Suspended Solids concentration of 100 mg/l or more.
5. “Industrial user” means a customer discharging waste into the sanitary sewer system who is required by the State of Iowa or the United States Environmental Protection Agency to execute an Operation Permit Treatment Agreement with the City.
6. “Residential user” means a customer discharging wastes into the sanitary sewer system from two (2) or fewer dwelling units of the same building.