For the purpose of this chapter, the following definitions shall apply unless the context clearly indicates or requires a different meaning.
   ADMINISTRATOR. The administrator of the U.S. Environmental Protection Agency.
   BASIC USER CHARGE. The basic assessment levied on all users of the public sewer system.
   BIOCHEMICAL OXYGEN DEMAND (BOD). The quantity of oxygen used in the biochemical oxidation of organic matter under standard laboratory for five days at 20° C, expressed in milligrams per liter.
   BUILDING DRAIN. That part of the lowest 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 points 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.
   CAPITAL IMPROVEMENT CHARGE. A charge levied on users to improve, extend or reconstruct the sewerage treatment works.
   COMBINED SEWER. A sewer which is designed and intended to receive wastewater, storm, surface and ground water drainage.
   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 the city, representative to sample and/or measure discharges.
   DEBT SERVICE CHARGE. The amount to be paid each billing period of payment of interest, principal and coverage (of loan, bond, and the like) outstanding.
   DIRECTOR. The Director of the Illinois Environmental Protection Agency.
   EASEMENT. An acquired legal right for the specific use of land owned by others.
   EFFLUENT CRITERIA. As defined in any applicable NPDES permit.
   FEDERAL ACT. The federal Clean Water Act (33 U.S.C. 466 et seq.) amended (P. L. 95-217).
   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, and implementing regulations.
   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. 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 and storage and sale of food.
   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.
   LOCAL CAPITAL COST CHARGE. Charges for costs other than the operation, maintenance and replacement costs, i.e., debt service and capital improvement costs.
   MAJOR CONTRIBUTING INDUSTRY. An industrial user of the publicly owned treatment works that:
      (1)   Has a flow of 50,000 gallons or more per average work day, or
      (2)   Has a flow greater than 10% of the flow carried by the municipal system receiving the water, or
      (3)   Has in its waste a toxic pollutant in toxic amounts as defined in standards issued under § 307(a) of the Federal Act, or
      (4)   Is found by the permit issuant authority, in connection with the issuance of the 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 (MG/L). 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.
   NATURAL OUTLET. Any outlet into a water- course, pond, ditch, lake or other body of surface or ground water.
   NPDES PERMIT. Any permit or equivalent document or requirements issued by the Administrator, or, where appropriated by the Director after enactment of the federal Clean Water Act to regulate the discharge of pollutants pursuant to § 402 of the federal Act.
   pH. The logarithm (base 10) of the reciprocal of the hydrogen ion concentration expressed by one of the procedures outlined in the IEPA Division of Laboratories Manual of Laboratory Methods.
   POPULATION EQUIVALENT. An evaluation of 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 0.2 pounds of suspended solids.
   PPM. Parts per million, by weight.
   PRETREATMENT. The treatment of waste- water 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 ½ inch (1.27 centimeters) in any dimension.
   PUBLIC SEWER. A sewer provided by or subject to the jurisdiction of the city. PUBLIC SEWER includes sewers within or outside the city boundaries that serve one or more persons and ultimately discharge into the city sanitary (or combined) sewer system, event through those sewers may not have been constructed with city funds.
   REPLACEMENT. Expenditures for obtaining and installing equipment, accessories or appur- tenances which are necessary during the useful life of the treatment works to maintain the capacity and performance for which the works were designed and constructed. Operation and maintenance includes REPLACEMENT.
   SANITARY SEWER. A sewer that conveys sewage or industrial wastes, or a combination of both, and into which storm, surface and ground waters or polluted industrial wastes are not admitted intentionally.
   SEWER. A pipe or conduit for conveying sewage or any other waste liquids, including storm, surface and ground water drainage.
   SEWERAGE. The system of sewers and appur- tenances for the collection, transportation and pumping of sewage.
   SEWERAGE FUND. The principal accounting designation for all revenue received in the operation of the sewerage system.
   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 of flows during normal operation.
   STATE ACT. The Illinois Anti-Pollution Bond Act of 1970, being ILCS Ch. 30, Act 405, §§ 1 et seq.
   STATE GRANT. The State of Illinois’ participation in the financing of the construction of treatment works as provided for by the Illinois Anti- Pollution Bond Act and for making the grants as filed with the Illinois Secretary of State.
   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 precipitation that is drained into the sewers.
   SURCHARGE. The assessment, in addition the basic user charge and debt service charge which is levied on those persons whose wastes are greater in strength than those established in this chapter.
   SUSPENDED SOLIDS. The 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 the IEPA Division of Laboratories Manual of Laboratory Methods.
   UNPOLLUTED WATER. Water 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 benefitted by discharge to the sanitary sewers and wastewater treatment facilities provided.
   USEFUL LIFE. The estimated period during which the collection system and/or treatment works will be operated.
   USER CHARGE. A charge levied on users of treatment works for the cost of operation, maintenance and replacement.
   USER CLASS. The type of user; residential, institutional/governmental, commercial or industrial.
      (1)   COMMERCIAL USER. The term includes lodging, retail and wholesale establishments or places engaged in selling merchandise or rendering service.
      (2)   INSTITUTIONAL/GOVERNMENTAL USER. The term includes schools, churches, penal institutions and users associated with federal, state and local governments.
      (3)   RESIDENTIAL USER. All dwelling units such as houses, mobile homes, apartments and permanent multi-family dwellings.
   WASTEWATER. The spent water of a community; 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 is used interchangeably with SEWAGE.
   WASTEWATER FACILITIES. The structures, equipment and processes required to collect, carry away and treat domestic and industrial wastes and transport effluent to a watercourse.
   WASTEWATER SERVICE CHARGE. The charge per quarter or month levied on all users of the wastewater facilities. It shall consist of the total or basic user charge, the local capital cost and a surcharge, if applicable.
   WASTEWATER TREATMENT WORKS. An arrangement of devices and structures for treating wastewater, industrial wastes and sludge. WASTE- WATER TREATMENT WORKS sometimes is synonymous with WASTE TREATMENT PLANT, WASTEWATER TREATMENT PLANT or POLLU- TION CONTROL PLANT.
   WATERCOURSE. A channel in which a flow of water occurs, either continuously or intermittently.
   WATER QUALITY STANDARDS. As defined in the Illinois Water Pollution Regulations.
(Ord. 0-89-8, passed 6-5-89)