The wastewater service charge for the use of and for service supplied by the wastewater facilities of the Village shall consist of a basic user charge for operation and maintenance plus replacement, a debt service charge and a surcharge, if applicable.
A. Debt Service Charge: The debt service charge shall be computed by dividing the annual debt service of all outstanding revenue bonds by gallons of water usage as recorded by water meters and/or sewage meters for wastes having the following normal concentrations.
B. Basic User Charge: The basic user charge shall be based on water usage as recorded by water meters and/or sewage meters for wastes having the following normal concentrations:
1. A five (5) day, twenty degree Centigrade (20°C) biochemical oxygen demand (BOD) of 204 mg/l.
2. A suspended solids (SS) content of 240 mg/l.
C. Operation, Maintenance, Replacement Cost: It shall consist of operation and maintenance costs plus replacement and shall be computed as follows:
1. Estimate the projected annual revenue required to operate and maintain the wastewater facilities including a replacement fund for the year.
2. Proportion the estimated costs to wastewater facility categories by volume, suspended solids and BOD, if possible.
3. Estimate wastewater volume, pounds of SS and pounds of BOD to be treated.
4. Proportion the estimated costs to nonindustrial users by volume, suspended solids and BOD.
5. Compute costs per one thousand (1,000) gallons for normal sewage strength.
6. Compute surcharge costs per one thousand (1,000) gallons per mg/l in excess of normal sewage strength for BOD and SS.
D. Surcharge: A surcharge will be levied to all users whose waters exceed the concentrations for BOD (204 mg/l) and SS (240 mg/l). The surcharge will be based on water usage as recorded by water meters and/or sewage meters for all wastes which exceed the 204 mg/l and 240 mg/l concentration for BOD and SS respectively.
E. Revision Of Charges: The adequacy of the wastewater service charge shall be reviewed annually by certified public accountants for the Village in their annual audit report. The wastewater service charge shall be revised periodically to reflect a change in debt service or a change in operation and maintenance costs including replacement costs. (Ord. 163, 4-14-1981; amd. 1998 Code)