§ 51.001 DEFINITIONS.
   For the purpose of this chapter, the following definitions shall apply unless the context clearly indicates or requires a different meaning.
   ACT. The Federal Water Pollution Control Act.
   ADMINISTRATOR. The Administrator of the U.S. Environmental Protection Agency.
   APPROVING AUTHORITY. The City Council, acting by and through the Operator of the Waterworks and Sewerage System being their duly authorized agent or representative.
   BASIC USER CHARGE. The basic assessment levied on all users of the public sewer system.
   BOD (BIOCHEMICAL OXYGEN DEMAND). The quantity of oxygen utilized in the biochemical oxidation of organic matter under standard laboratory procedure in five days at 20°C, expressed in milligrams per liter.
   BUILDING INSPECTOR. The City Building Inspector or his or her authorized deputy, agent, or representative as designated by the City Council.
   BUILDING DRAIN. That part of the lowest horizontal piping of a drainage system which receives the discharge from soil, waste, and other drainage pipes inside the walls of the building and conveys it to the building sewer or other approved point of discharge, beginning five feet (1.5 meters) outside the inner face of the building wall.
   BUILDING SEWER. The extension from the building drain to the public sewer or other place of disposal.
   COMBINED SEWER. A sewer which is designed and intended to receive wastewater, storm, surface, and groundwater drainage.
   COMPATIBLE POLLUTANT. Biochemical oxygen demand, suspended solids, pH and fecal coliform bacteria, plus additional pollutants identified in the NPDES permit.
   CONTROL MANHOLE. A structure located on a site from which industrial wastes are discharged. Where feasible, the manhole shall have an interior drop. The purpose of a CONTROL MANHOLE is to provide access for a city representative to sample and measure discharges.
   DEBT SERVICE CHARGE. The amount to be paid each billing period for payment of interest, principal, and coverage of revenue bonds outstanding and shall be computed by dividing the annual debt service by the number of users connected to the wastewater facilities.
   DIRECTOR. The chief administrative officer of the state environmental protection agency.
   EASEMENT. An acquired legal right for the specific use of land owned by others.
   EFFLUENT CRITERIA. Defined in any applicable NPDES PERMIT.
   FEDERAL GRANT. The U.S. Government participation in the financing of the construction of treatment works as provided for by Title II Grants for Construction of Treatment Works of the Act.
   FLOATABLE OIL. Oil, fat, or grease in a physical state such that it will separate by gravity from wastewater by treatment in an approved pretreatment facility. A wastewater shall be considered free of floatable fat if it is properly pretreated and the wastewater does not interfere with the collection system.
   GARBAGE. Solid wastes from the domestic and commercial preparation, cooking, and dispensing of food, and from the handling, storage, and sale of produce.
   INCOMPATIBLE POLLUTANT. Any pollutant which is not a COMPATIBLE POLLUTANT as defined in this section.
   INDUSTRIAL COST RECOVERY. Recovery from the industrial users of a treatment works of the grant amount allocable to treatment of wastes from such users pursuant to Section 204(b) of PL 92-500 and 40 CFR Part 35.928 (1) and (2).
   INDUSTRIAL USER. For the purpose of industrial cost recovery shall mean any nongovernmental user of publicly owned treatment works identified in the Standard Industrial Classification Manual, 1972, Office of Management and Budget, as amended and supplemented, under the following divisions:
      (1)   (a)   Division A - agriculture, forestry, and fishing.
         (b)   Division B - mining.
         (c)   Division D - manufacturing.
         (d)   Division E - transportation, communications, electric, gas, and sanitary services.
         (e)   Division I - services.
      (2)   A user in the divisions listed may be excluded if it is determined by the O perator that it will introduce primarily segregated domestic wastes or wastes from sanitary conveniences.
      (3)   Industrial user for the purpose of developing the user charge system may be a manufacturing or process facility which is engaged in a productive and profit making enterprise.
   INDUSTRIAL WASTE. Any solid, liquid, or gaseous substance discharged, permitted to flow, or escaping from any industrial, manufacturing, commercial, or business establishment or process or from the development, recovery, or processing of any natural resource as distinct from sanitary sewage.
   INFILTRATION. The water entering a sewer system, including building drains and sewers, from the ground, through such means as, but not limited to, defective pipes, pipe joints, connections, or manhole walls. INFILTRATION does not include and is distinguished from INFLOW.
   INFILTRATION/INFLOW. The total quantity of water from both infiltration and inflow without distinguishing the source.
   INFLOW. The water discharge into a sewer system, including, building drains and sewers, from such sources as, but not limited to, roof leaders; cellar, yard, and area drains; foundation drains; unpolluted cooling water discharges; drains from springs and swampy areas; manhole covers, cross connections from storm sewers, and combined sewers, catch basins, storm waters, surface runoff, street wash waters or drainage. INFLOW does not include and is distinguished from INFILTRATION.
   MAJOR CONTRIBUTING INDUSTRY. An industrial user of the publicly owned treatment works that:
      (1)   Has a flow of 1,200 cubic feet or more per average work day;
      (2)   Has a flow greater than 5% of the flow carried by the municipal system receiving the waste;
      (3)   Has in its waste, a toxic pollutant in toxic amounts as defined in standards issued under section 307 (a) of the act; or
      (4)   Is found by the permit issuance authority, in connection with the issuance of an NPDES permit to the publicly owned treatment works receiving the waste, to have significant impact, either singly or in combination with other contributing industries, on that treatment works or upon the quality of effluent from that treatment works.
   MILLIGRAMS PER LITER. A unit of the concentration of water or wastewater constituent. It is 0.001 g of the constituent in 1,000 ml of water. It has replaced the unit formerly used commonly, parts per million, to which it is approximately equivalent, in reporting the results of water and wastewater analysis.
   MULTIPLE UNIT USER. Residential, commercial or combination commercial and residential buildings that have more than one unit located on the same premises and are being served through a single water meter (such as apartment buildings, trailer courts and commercial and residential units located within the same building). A unit means a place of business or living accommodations for one family. MULTIPLE UNIT USER does not include nursing homes, assisted living facilities or schools. The MULTIPLE UNIT USER status shall only be permitted for existing circumstances and nothing in this chapter shall be construed to permit future multiple unit user situations.
   NATURAL OUTLET. Any outlet into a watercourse, pond, ditch, lake, or other body of surface or groundwater.
   NPDES PERMIT. A permit issued under the National Pollutant Discharge Elimination System for discharge of wastewaters to the navigable waters of the United States pursuant to section 402 of PL 92-500.
   OPERATION AND MAINTENANCE COSTS. All costs, direct and indirect, (other than debt service) necessary to insure adequate wastewater treatment on a continuing basis, conforming with related federal, state, and local requirements, and assuring optimal long term facility management. (These costs include depreciation and replacement).
   OPERATOR. The Operator of the Waterworks and Sewerage System Department or his or her authorized deputy, agent or representative as designated by the Operator with the approval of the Director of Public Works.
   pH. The logarithm (base 10) of the reciprocal of the hydrogen ion concentration expressed in grams per liter of solution. It shall be determined by one of the procedures outlined in STANDARD METHODS.
   PPM. Parts per million by weight.
   POPULATION EQUIVALENT. A term used to evaluate the impact of industrial or other waste on a treatment works or stream. One population equivalent is 100 gallons of sewage per day, containing 0.17 pounds of BOD and 0.20 pounds of suspended solids. The impact on a treatment works is evaluated as the equivalent of the highest of the three parameters. Impact on a stream is the higher of the BOD suspended solids parameters.
   PRETREATMENT. The treatment of wastewater from sources before introduction into the wastewater treatment works.
   PROPERLY SHREDDED GARBAGE. The wastes from the preparation, cooking, and dispensing of food that have been shredded to such a degree that all particles will be carried freely under the flow conditions normally prevailing in public sewers, with no particle greater than 1/2 inch (1.27 centimeters) in any dimension.
   PUBLIC SEWER. A sewer dedicated to or provided by or subject to the jurisdiction of the city consisting of collector sewer, interceptor sewer, force main, and pumping station. It shall also include sewers within or outside the city boundaries that serve one or more persons and ultimately discharge into the city sanitary sewer system, even though those sewers may not have been constructed with city funds.
   REPLACEMENT. Expenditures for obtaining and installing equipment, accessories, or appurtenances which are necessary during the service life of the treatment works to maintain the capacity and performance for which such works were designed and constructed. The term OPERATION AND MAINTENANCE includes REPLACEMENT.
   RESIDENTIAL OR COMMERCIAL USER; NONINDUSTRIAL USER. Any user of the treatment works not classified as an industrial user or excluded as an industrial user as provided for in this section.
   SANITARY SEWER. A sewer that conveys sewage or industrial wastes or a combination of both, and into which storm, surface, and groundwaters or unpolluted industrial wastes are not intentionally admitted.
   SEWAGE. A combination of the water carried wastes from residences, business buildings, institutions, and industrial establishments, together with those ground, surface, and storm waters as may be present.
   SEWAGE TREATMENT PLANT. Any arrangement of devices; structures and equipment for treating sewage.
   SEWER. A pipe or conduit for conveying sewage or any other waste liquids, including storm, surface, and groundwater drainage.
   SEWERAGE. The system of sewers and appurtenances for the collection, transportation, and pumping of sewage.
   SHALL is mandatory; MAY is permissible.
   SIGNIFICANT INDUSTRY. Any industry that will contribute greater than 10% of the design flow and design pollutant loading of the treatment works.
   SLUG. Any discharge of water, sewage, or industrial waste which in concentration of any given constituent or in quantity of flow exceeds for any period of duration longer than 15 minutes more than five times the average 24-hour concentration or flows during normal operation.
   STANDARD METHODS. The examination and analytical procedures set forth in the most recent edition of “Standard Methods for the Examination of Water, Sewage, and Industrial Wastes,” published jointly by the American Public Health Association, the American Water Works Association and the Federation of Sewage and Industrial Wastes Association.
   STATE GOVERNMENT:
      (1)    STATE ACT. The Illinois Anti-Pollution Bond Act of 1970.
      (2)    STATE GRANT. The state participation in the financing of the construction of treatment works as provided for by the Illinois Anti-Pollution Bond Act and for making such grants as filed with the Secretary of State of the State of Illinois.
   STORM SEWER. A sewer that carries storm, surface, and ground-water drainage but excludes sewage and industrial wastes other than unpolluted cooling water.
   STORMWATER RUNOFF. That portion of the rainfall that is drained into the sewers.
   SURCHARGE. The assessment in addition to the basic user charge (§ 51.104) and debt service charge (§ 51.103) which is levied on those persons whose wastes are greater in strength than the concentration values established as representative of normal sewage in § 51.101 of this chapter.
   SUSPENDED SOLIDS. Solids that either float on the surface of, or are in suspension in water, sewage, or industrial waste, and which are removable by a laboratory filtration device. Quantitative determination of suspended solids shall be made in accordance with procedures set forth in STANDARD METHODS.
   UNPOLLUTED WATER. Water of quality equal to or better than the effluent criteria in effect or water that would not cause violation of receiving water quality standards and would not be benefited by discharge to the sanitary sewers and wastewater treatment facilities provided.
   USEFUL LIFE. The estimated period during which the treatment works will be operated and shall be 30 years from the date of startup of any wastewater facilities constructed with a federal grant.
   USER CHARGE. A charge levied on users of treatment works for the cost of operation and maintenance including replacement of such works pursuant to section 204 (b) of PL 92.500 and the cost of any bond debt of such works and shall consist of both basic user charges (§ 51.104) and surcharges (§§ 51.105 and 51.106).
   USER CLASS. The type of user either RESIDENTIAL or COMMERCIAL or INDUSTRIAL as defined by this section.
   WASTEWATER. The spent water of a community. It may be a combination of the liquid and water carried wastes from residences, commercial buildings, industrial plants and institutions, together with any groundwater, surface water, and stormwater that may be present.
   WASTEWATER FACILITIES. The structures, equipment, and processes required to collect, carry away, and treat domestic and industrial wastes and dispose of the effluent.
   WASTEWATER SERVICE CHARGE. The charge per quarterly period levied on all users of the wastewater facilities. The service charge shall be computed as outlined in §§ 51.100 to 51.108, inclusive, of this chapter, and shall consist of the total or the basic user charge, the debt service charge, and a surcharge, if applicable.
   WASTEWATER TREATMENT WORKS. An arrangement of devices and structures for treating wastewater, industrial wastes, and sludge. Sometimes used as synonymous with WASTEWATER TREATMENT PLANT or SEWAGE TREATMENT PLANT, or POLLUTION CONTROL PLANT.
   WATERCOURSE. A channel in which a flow of water occurs, either continuously or intermittently.
   WATER, QUALITY STANDARDS. Defined in the Water Pollution Regulations of Illinois.
   WATERWORKS AND SEWERAGE FUND. The principal accounting designation for all revenues received and expenses incurred in the operation of the waterworks and/or sewerage system. These revenues and expenses shall be segregated so that water system revenues and expenses shall be recorded in the waterworks account of the water-works and sewerage fund and revenues and expenses of the sewerage system shall be recorded in the sewerage account of the waterworks and sewerage fund.
('72 Code, § 51.001) (Ord. 51-A, passed 10-4-76; Am. Ord. 03-01, passed 3-3-03; Am. Ord. 19-03, passed 5-6-19)