under this chapter shall accept waste accumulated within the waste disposal district without discrimination as to whether or not the waste is collected by the consolidated city. The fees made by any such facility for any services rendered or to be rendered, either directly or in connection with them, must be nondiscriminatory, but they may vary based upon the volume, weight, hazardousness, or difficulty of disposal of the waste disposed of or processed by the facility.
IC 36-9-31-23