A. The volume service charge for commercial units is based upon the quantity of wastewater discharging into the public sewer system. This discharge measurement is determined by the average monthly water use at a property from the previous months as shown in water meter records, as adjusted for water use determined not to contribute wastewater loading to the public sewer system. The commercial customer shall provide the Department with all information on water use at a property necessary to determine the consumptive water use for the commercial unit. This shall include furnishing records kept by the water purveyor for the commercial unit.

B. Measurement of water use determined not to contribute wastewater loading to the public sewer system shall be by means approved by the Department.

C. All new commercial units will be allowed adjustments for water use determined not to contribute wastewater loading to the public sewer system only when a separate approved water meter is provided, at the owner's expense, to quantify the actual volume not discharging to the public sewer system.

D. The Department shall have access to the premises for meter reading so as to confirm that the water use is as claimed by the customer.

E. If water meter records are not reliable or available for any reason, an estimate of water use at the property shall be used to determine water consumption there. Estimates of water use at a property shall be by means approved by the Department.

F. Commercial units which derive all or part of the wastewater discharge from product concentration, moisture condensation, or other non-metered sources, shall install approved wastewater flow monitoring equipment upon written notice given by the Department.

G. If the measurement of water use results in a fractional part of a CCF, the number used for calculating rates and charges shall be the next highest whole number.

H. In the case of a leak in the water service pipe, the property owner may be entitled to an adjustment of their sewer bill. To apply for a billing adjustment due to a water leak, a customer shall submit a written request to the Department. The request shall include the date the leak was repaired and copies of the repair bills or materials receipt. The burden of proof shall be on the applicant to show that the billing adjustment sought should be granted. Upon receipt of the request, the Department shall review it and determine whether, and to what extent, to grant the request. The Department shall notify the applicant of its decision in writing.