For purposes of this chapter, the following words and phrases shall have the following meanings ascribed to them respectively.
(a) "B.O.D." or "biochemical oxygen demand" means the quantity of oxygen utilized in the biochemical oxidation of organic matter under standard laboratory procedure in 5 days at 20°C., expressed in parts per million by weight.
(b) "Debt service" means the funds used for the retirement of, and interest on, bonds and/or notes authorized and issued by the City to construct sewage system facilities.
(c) "Director" means the Director of Public Service and Safety of the City, or such person who shall perform the duties of Director of Public Service and Safety of the City.
(d) "Normal domestic sewage" means sewage which when analyzed shows by weight a daily average of not more than 520 parts per million (ppm) of suspended solids and not more than 200 ppm of biochemical oxygen demand (BOD).
(e) "Operation and maintenance costs" means the costs incurred in the act of keeping all facilities for collecting, pumping, treating, and disposing of sewage in the good state of repair and functioning properly including the replacement of said facilities when necessary.
(f) "pH" means the logarithm of the reciprocal of the weight of hydrogen ions in grams per liter of solution.
(g) "Replacement" means expenditures for obtaining and installing equipment, accessories, and appurtenances which are necessary during the useful life of the treatment works to maintain the capacity and performance for which such works were designed and constructed.
(h) "Sanitary sewage" means the waste from water closets, urinals, lavatories, sinks, bathtubs, showers, household laundries, cellar floor drains, garage floor drains, bars, soda fountains, cuspidors, refrigerator drips, drinking fountains, stable floor drains, and other water-borne waste not constituting industrial wastes.
(i) "Sewer service charge" means the total charge levied against users of the sewage system for sewer services. The charge shall include user charges plus the cost of debt service.
(j) "Suspended solids" means solids which either float on the surface of, or are in suspension in water, sewage, or other liquids, and which are removable by laboratory filtering.
(k) "System" means the sewerage system of the City used for the collection, treatment, and disposition of sanitary sewage and industrial wastes, whether or not also used for the collection and disposition of storm, surface, and ground waters.
(l) "User charge" means the charge assessed users of the sewage system to recover the cost of OM&R of the sewage collection and sewage treatment system, and the cost of rendering bills and collecting sewer service charges.
(m) "User classes." The user charge system consists of the following user classes as defined below:
(1) "Residential user" means a principal family residence or habitation classified as a single family, multifamily, or apartment dwelling that discharges domestic sanitary wastewater having characteristics of 250 milligrams per liter biochemical oxygen demand and 200 milligrams per liter suspended solids into the public wastewater treatment system, works, and facility.
(2) "Industrial user" includes users discharging waste resulting from manufacturing activities involving the mechanical for chemical transformation of materials or substance into other products. These activities occur in establishments usually described as plants, factories, or mills and characteristically use power-driven machines and material handling equipment.
(3) "Commercial user" means retail or wholesale business establishments that discharge primarily normal strength waste into the public wastewater treatment system, works, and facility.
(4) "Institutional/governmental user" means hospitals, nursing homes, schools, city, county, state or federal buildings or facilities that discharge wastewater into the public wastewater treatment system, works, and facility. (1979 Code 53.01; Ord. 95-14. Passed 2-21-95.)