(A) The basic user charge shall be based on water usage as recorded by water meters (excluding water meters for fire protection, lawn irrigation and swimming pool systems) and/or sewage meters for wastes having the following normal domestic concentrations:
(1) A five-day, 20°C BOD of 220 mg/l; and
(2) A suspended solids content of 240 mg/l.
(B) The basic user charge shall consist of operation and maintenance costs plus replacement, depreciation and debt reduction, and shall be computed as follows:
(1) Estimate the projected annual revenue required to operate and maintain the wastewater facilities, including a replacement and debt retirement fund for the year, for all works categories;
(2) Proportion the estimated costs to wastewater facility categories by volume, suspended solids and BOD, if possible;
(3) Estimate wastewater volume, pounds of suspended solids and pounds of BOD to be treated;
(4) Proportion the estimated costs to add users by volume, suspended solids and BOD;
(5) Compute costs per 1,000 gallons for normal sewage strength; and
(6) Compute surcharge cost per mg/l in excess of normal sewage strength for BOD and suspended solids.
(1993 Code, § 38-3-48) (Ord. 804, passed 9-18-1989; Am. Ord. 1361, passed 12-19-2005; Am. Ord. 1441, passed 7-23-2007)