(A) Basis for wastewater service charges.
(1) The wastewater service charge for the use of and for service supplied by the wastewater treatment system of the village shall consist of a basic user charge for operation and maintenance plus replacement.
(2) The basic user charge shall be based on water usage as recorded by water meters and/or wastewater meters for wastes having the following normal domestic concentrations:
(a) A five-day, 20°C biochemical oxygen demand (BOD of 200 mg/l); and
(b) A total suspended solids (TSS) content of 250 mg/l.
(3) It shall consist of operation and maintenance costs plus replacement and shall be computed as follows:
(a) Estimate wastewater volume, pounds of TSS, and pounds of BOD to be treated annually;
(b) Estimate the projected annual revenue required to operate and maintain the wastewater facilities including a replacement fund for the year, for all works categories;
(c) Compute total annual billable gallons for all sewer customers;
(d) Proportion the estimated operation, maintenance, and replacement (O, M, and R) costs to each user class by volume, total suspended solids, and BOD;
(e) Proportion the estimated O, M, and R costs to wastewater facility categories by volume, total suspended solids, and BOD;
(f) Compute costs per 1,000 gallons for normal sewage strength based on total annual billable gallons; and
(g) Compute surcharge costs per pound in excess of normal wastewater strength for BOD and TSS.
(4) A surcharge will be levied to all users whose waters exceed the normal domestic concentrations of BOD (200 mg/l) and TSS (250 mg/l). The surcharge will be based on water usage as recorded by water meters and/or wastewater meters for all wastes which exceed the 200 mg/l and 250 mg/l concentration for BOD and TSS respectively.
(5) The adequacy of the wastewater service charge shall be reviewed, not less often than 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 operation and maintenance costs including replacement costs.
(6) The users of the wastewater treatment system will be notified annually, in conjunction with a regular bill, of the rate and that portion of the user charges which are attributable to the wastewater treatment operation, maintenance, and replacement.
(B) Measurement of flow. 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 100 gallons.
(1) If the person discharging wastes into the public sewers procures any part, or all, of his or her water from sources other than the public water system, all or a part of which is discharged into the public sewers, the person shall install and maintain, at his or her expense, water meters of a type approved by the village for the purpose of determining the volume of water obtained from these other sources.
(2) Devices for measuring the volume of waste discharged may be required by the village if these volumes cannot otherwise be determined from the metered water consumption records.
(3) 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 village.
(C) Basic user rate.
(1) The minimum monthly rate for sewer service and all rates for more than minimum service shall be increased by $5 effective the January 1, 2016, 2017, and 2018 as follows:
(a) Effective January 1, 2016, the minimum monthly rate shall be increased by $5 to $30.16;
(b) Effective January 1, 2017, the minimum monthly rate shall be increased by $5 to $35.16; and
(c) Effective January 1, 2018, the minimum monthly rate shall be increased by $5 to $40.16.
(2) All non-metered residential type users of the wastewater facilities shall pay a minimum flat rate charge per month adequate to cover the minimum service charge per 2,000 gallons as provided for above. The flat rate charge will allow a maximum of 2,000 gallons per month.
(3) In the event use of the wastewater treatment system is determined by the village to be in excess of 2,000 gallons per month, the village may require such flat rate user to install metering devices on the water supply and/or building sewer to measure the amount of service supplied.
(D) Surcharge rate. The rates of surcharges for BOD5 and TSS shall be as follows:
Per lb. of | Rate |
BOD | $0.2976 |
TSS | $0.2381 |
(E) Computation of surcharge. The concentration of wastes used for computing surcharges shall be established by wastewater sampling. Wastewater sampling shall be performed as often as may be deemed necessary by the village and shall be binding as a basis for surcharges.
(F) Computation of wastewater service charge. The wastewater service charge shall be computed by the following formula:
CW = CM + (Vu-X) (CU+CD) + CS
Where:
CW = Amount of waste service charge ($) per billing period
CM = Minimum charge for administration operation, maintenance and replacement and debt service (division (C) above)
Vu = Wastewater volume for the billing period
X = Allowable consumption in gallons for the minimum charge (division (C) above)
CU = Basic user rate for operation, maintenance and replacement (division (C) above)
CD = Additional charges for debt service for consumption in excess of 2,000 gallons per month, (division (C) above)
CS = Amount of surcharge (divisions (D) and (E) above)
(Ord. 687, passed 8-15-1991; Ord. 994, passed 11-6-2014)