When used in this title, the following words and terms shall have the meanings ascribed to them in this section:
APPROVING AUTHORITY: The town of Leyden or its duly authorized agent or representative.
BOD (Denoting Biochemical Oxygen Demand): The quantity of oxygen utilized in the biochemical oxidation of organic matter in five (5) days at twenty degrees Celsius (20°C), expressed as milligrams per liter (mg/l). Quantitative determination of BOD shall be made in accordance with procedures set forth in "standard methods".
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.
BUILDING SEWER: A sanitary sewer which begins immediately outside of the foundation wall of any building or structure being served and ends at its connection to the public sewer.
CAPITAL IMPROVEMENT CHARGE: A charge levied on users, from time to time, for the purpose of meeting the costs of improving, extending or reconstructing any portion of the combined system.
CATEGORY A: Those sanitary sewer users who discharge normal domestic strength wastewater with concentrations of BOD no greater than two hundred fifty (250) mg/l, suspended solids no greater than two hundred fifty (250) mg/l, and nitrogen no greater than sixteen (16) mg/l.
CATEGORY B: Those sanitary sewer users who discharge wastewater with concentrations in excess of two hundred fifty (250) mg/l of BOD, two hundred fifty (250) mg/l suspended solids and sixteen (16) mg/l nitrogen. Users whose wastewater exceeds the concentration for any one of these parameters shall be in Category B.
CHLORINE REQUIREMENT: The amount of chlorine in mg/l which must be added to sewage to produce a residual chlorine as specified in the national pollutant discharge elimination system (NPDES) permit.
COLLECTOR or SUPERINTENDENT: The Collector of the combined waterworks and sewerage system of the Town of Leyden.
COMBINED SEWER: A sewer intended to receive both wastewater and storm or surface water.
COMBINED SYSTEM: The combined waterworks and sewerage system of the Town of Leyden, Cook County, Illinois.
COMPATIBLE POLLUTANTS: BOD, suspended solids, phosphorus, nitrogen, pH or fecal coliform bacteria, plus additional pollutants identified in the Town's NPDES permit for its wastewater treatment facility; provided, that such facility is designed to treat such additional pollutants and, in fact, does remove such pollutants to a substantial degree.
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 Town of Leyden representative to sample and/or measure discharges.
EASEMENT: An acquired legal right for the specified use of land owned by others.
FLOATABLE OIL: Oil, fat or grease in a physical state such that it will separate by gravity from wastewater by means of treatment in an approved pretreatment facility. Wastewater shall be considered free of floatable oil if it is properly pretreated and the wastewater does not interfere with the collection system.
GROUND GARBAGE: The residue from the preparation, cooking, dispensing, handling, storage and sale of food products and produce that has been shredded to such a degree that all particles will be carried freely in suspension under the flow conditions normally prevailing in public sewers and that no particle shall be greater than one-half inch (1/2") in any dimension.
INCOMPATIBLE POLLUTANTS: Wastewater with pollutants that will adversely affect the wastewater treatment facilities or disrupt the quality of wastewater treatment if discharged to the wastewater treatment facilities.
INDUSTRIAL WASTE: Any solid, liquid or gaseous substance discharged or escaping from any industrial, manufacturing or commercial establishment. "Industrial waste" includes any wastewater which is not sanitary sewage.
LOCAL CAPITAL COST CHARGE: Charges for costs other than operation, maintenance and replacement costs, i.e., debt service and capital improvement costs.
MWRD: The Metropolitan Water Reclamation District of Greater Chicago.
NPDES PERMIT: The national pollutant discharge elimination system permit, a document issued by the State of Illinois which establishes effluent limitations and monitoring requirements for the municipal wastewater treatment facility.
NATURAL OUTLET: Any outlet, including storm sewers and combined sewer overflows, into a watercourse, pond, ditch, lake or other body of surface water or ground water.
NITROGEN: Ammonia nitrogen.
NORMAL DOMESTIC STRENGTH WASTEWATER: Wastewater with concentrations of BOD no greater than two hundred fifty (250) mg/l, suspended solids no greater than two hundred fifty (250) mg/l and nitrogen no greater than sixteen (16) mg/l.
OPERATION AND MAINTENANCE COSTS: Shall include all costs associated with the operation and maintenance of the combined system, including its wastewater treatment facilities and water facilities and further including administrative and replacement costs, all as determined, from time to time, by the Town.
pH: The logarithm of the reciprocal of the hydrogen ion concentration. The concentration is the weight of hydrogen ions in grams per liter of solution. Neutral water, for example, has a pH value of seven (7) and a hydrogen ion concentration of 10-7.
PERSON: Any and all persons, including any individual, firm, company, Municipal or private corporation, association, society, institution, enterprise, governmental agency or other entity.
PHOSPHORUS: Total phosphorus and is expressed in mg/l of P (phosphorus).
PIPE: Either sewer or water pipe, as the case may be, through which service of the combined system is furnished.
PREMISES: Shall include any lot, or part thereof, any building, or part thereof, or any parcel or tract of land whatsoever.
PRETREATMENT: The treatment of wastewaters from sources before introduction into the wastewater treatment facilities.
PUBLIC SEWER: Any publicly owned sewer, storm drain, sanitary sewer or combined sewer.
REPLACEMENT COSTS: Expenditures for obtaining and installing equipment, accessories or appurtenances which are necessary during the useful life of the combined system, including its wastewater treatment facilities and water facilities, to maintain the capacity and performance for which such facilities were designed and constructed. Operation and maintenance costs include replacement costs.
SANITARY SEWAGE: A combination of liquid- and water-carried wastes discharged from toilets and/or sanitary plumbing facilities.
SANITARY SEWER: A sewer that carries sewage or wastewater.
SEWER: A pipe or conduit that carries wastewater or drainage water.
SEWER SERVICE CHARGE: A charge levied on users of the wastewater treatment facilities for payment of operation and maintenance expenses, debt service costs and other expenses or obligations related to said facilities.
SEWERAGE: The system of sewers and appurtenances for the collection, transportation and pumping of sewage.
SHALL/MAY: The use of the word "shall" indicates that which is mandatory; the use of the word "may" indicates that which is permissible.
SLUG: Any discharge of water or wastewater which, in concentration of any given constituent or in quantity of flow, exceeds, for any period of duration longer than fifteen (15) minutes, more than five (5) times the average twenty four (24) hour concentration of flows during normal operation and/or adversely affects the collection system and/or performance of the wastewater treatment facilities.
STANDARD METHODS: The examination and analytical procedures set forth in the most recent edition of "Standard Methods for the Examination of Water and Wastewater" published jointly by the American Public Health Association, the American Water Works Association and the Water Pollution Control Federation.
STORM SEWER or STORM DRAIN: A drain or sewer for conveying water, ground water, subsurface water or unpolluted water from any source.
STORM WATER RUNOFF: That portion of the precipitation that is drained into the sewers.
SUPERINTENDENT: The duly elected or appointed Supervisor of Leyden Township or his/her duly authorized representative.
SURCHARGE: The assessment, in addition to the basic sewer user charge and debt service charge, which is levied on those users whose wastes are greater in strength than the concentration values established in subsection 5-4-2D of this Title.
SUSPENDED SOLIDS: Total suspended matter that either floats on the surface of, or is in suspension in water, wastewater or other liquids, and that is removable by laboratory filtering as prescribed in "Standard Methods for the Examination of Water and Wastewater", and referred to as nonfilterable residue.
TOWN: The Town of Leyden, Cook County, Illinois.
UNPOLLUTED WATER: Water quality equal to or better than the effluent of the wastewater treatment facilities 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.
USEFUL LIFE: The estimated period during which any portion of the combined system will be operated.
USER: Any person receiving both sewer and water service from the combined system.
USER CHARGE: The combined system service charges, as defined in Section 5-4-1 of this Title.
USER CLASS: One or more of the following types of users, as such type is defined herein:
Commercial User: That type of user receiving service provided to all transient dwellings, such as hotels and motels, to retail or wholesale establishments and to any premises used for the purpose of selling merchandise or rendering service.
Industrial User: Shall include establishments engaged in manufacturing activities involving the mechanical or chemical transformation of materials of any substance into another substance or product.
Institutional/Governmental User: Shall include schools, churches, penal institutions and users which are units or agencies of Federal, State and local governments.
Residential User: That type of user receiving service provided to any dwelling units, such as houses, mobile homes, apartments and permanent multi-family dwellings.
WASTEWATER: The spent water of any person. From the standpoint of source, it may be a combination of the liquid- and water-carried wastes from residences, commercial buildings, industrial plants, institutions or any user class, together with any ground water, surface water and storm water that may be present.
Effluent Criteria: Are defined in any applicable NPDES permit.
Major Contributing Industry: An industrial users of the publicly owned treatment works that:
A. Has a flow of fifty thousand (50,000) gallons or more per average work day; or
B. Has a flow greater than ten percent (10%) of the flow carried by the municipal system receiving the waste; or
C. Has in its waste a toxic pollutant in toxic amounts as defined in standards issued under section 307(a) of the Federal Act; or
D. 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: A unit of the concentration of water or wastewater constituent. It is 0.001 g of the constituent in one thousand 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.
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 one hundred (100) gallons of sewage per day, containing twenty five (25) pounds of BOD and thirty five (35) pounds of suspended solids.
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 benefited by discharge to the sanitary sewers and wastewater treatment facilities provided.
Water Quality Standards: Are defined in the Water Pollution Regulations of Illinois.
WASTEWATER TREATMENT FACILITIES: That portion of the combined system consisting of the structures, equipment and processes required to collect, carry away and treat domestic and industrial wastes to transport effluent to a watercourse. "Wastewater facilities" shall include wastewater treatment works.
WASTEWATER TREATMENT WORKS: An arrangement of devices and structures for treating wastewater, industrial waste and sludge. "Wastewater treatment works" may also be referred to as wastewater plant, wastes treatment plant or pollution control plant.
WATER FACILITIES: That portion of the combined system consisting of the structures, equipment and processes required to provide water service to all users and shall include all sources of water, filtration and pumping equipment and all water mains, pipes, service lines and meters.
WATERCOURSE: A channel in which a flow of water occurs, either continuously or intermittently.
WATERWORKS AND SEWERAGE FUND: The principal accounting designation for all income and revenue derived from the operation of the combined system. (Ord. SW-O-89-1, 8-8-1989; amd. Ord. SWO-96-3, 11-4-1996; Ord. SWO-2022-1, 2-8-2022)