The volume of flow used for computing basic user charges and surcharges shall be the metered water consumption read to the lowest even increments of one thousand (1,000) gallons.
(A) If the person discharging wastes into the public sewer procures any part or all of his water from sources other than the Public Waterworks System, all or a part of which is discharged into the public sewers, the person shall install and maintain, at his expense, water meters of a type approved by the Superintendent for the purpose of determining the volume of water obtained from these other sources.
(B) Devices for measuring the volume of waste discharged may be required by the Superintendent if these volumes cannot otherwise be determined from the metered water consumption records.
(C) Metering devices for determining the volume of waste shall be installed, owned, and maintained by the person. Following approval and installation, such meters may not be removed, unless service is canceled, without the consent of the Superintendent.