This chapter shall be known as the city's "Sewer System Use and Regulation Ordinance."
(1993 Code, § 3-2.1.1; Ord. 578, passed 3-4-1991)
(A) 
City's declaration of intent. Pursuant to the general laws of the state and the City Charter, the City Council does hereby declare its intention to own, acquire, construct, equip, operate, and maintain, either within or without the corporate limits in whole or in part, sewers, including maintenance, enlargement, or extension of the present sewer system of the city, sewage treatment plant or plants, intercepting sewers, outfall sewers, force mains, or pumping stations with all appurtenances necessary, useful, or convenient for the treatment and disposal of sewage.
(B) 
Chapter intent. The intent and purpose of this chapter is to provide for the orderly functioning of the publicly owned wastewater collection and transport system and associated treatment works; to set forth uniform requirements for direct and indirect contributors to the wastewater collection and treatment system for the city; and to enable the city to comply with applicable state and federal laws.
(1993 Code, § 3-2.1.2; 1993 Code, § 3-2.1.3; Ord. 578, passed 3-4-1991)
The objectives of this chapter are:
(A) 
To provide control of construction and use of the city sewerage system;
(B) 
To prevent the introduction of pollutants into the wastewater system which will interfere with the operation of the system or contaminate the resulting sludge;
(C) 
To prevent the introduction of pollutants into the wastewater system which will pass through the system, into receiving waters or the atmosphere;
(D) 
To improve the opportunity to recycle and reclaim wastewaters and sludges from the system;
(E) 
To provide for equitable distribution of the cost of the wastewater system; and
(F) 
To assure the financial self-sufficiency of the sewerage system.
(1993 Code, § 3-2.1.4; Ord. 578, passed 3-4-1991)
(A) 
Abbreviations. For the purpose of this chapter, the following abbreviations shall apply unless the context clearly indicates or requires a different meaning.
BOD5. Biochemical oxygen demand (5-day).
DEQ. The State Department of Environmental Quality.
EPA. The U.S. Environmental Protection Agency.
l. Liter.
mg. Milligram.
mg/l. Milligrams per liter.
NPDES. National Pollutant Discharge Elimination System.
OSPSC. The State Plumbing Specialty Code.
POTW. Publicly owned treatment works.
TSS. Total suspended solids.
U.S.C. United States Code.
(B) 
Definitions. For the purpose of this chapter, the following definitions shall apply unless the context clearly indicates or requires a different meaning.
AVAILABLE SEWER.
Any sewer that can be accessed and sufficient grade exists to serve the property.
BIOCHEMICAL OXYGEN DEMAND or BOD5.
The quantity of dissolved oxygen utilized in the biochemical oxidation of organic matter over a period of 5 days at a temperature of 20TC expressed in terms of mg/l.
BUILDING DRAIN.
The part of the lowest horizontal piping of a building drainage system which receives the discharge from waste and other drainage pipes within the building or structure, and conveys the same to the building sanitary sewer which begins at a point 5 feet outside the established line of the building structure.
BUILDING SANITARY SEWER.
The part of the horizontal piping of a wastewater drainage system beginning from any building drain, and conveys wastewater to a public sewer or other point of disposal.
BUILDING STORM SEWER.
The part of the piping of a storm water drainage system which begins at the connection to the building storm drain at a point 5 feet outside the established line of the building or structure, and conveys storm water, surface water, and other unpolluted water to the public storm sewer, street, or other point of disposal.
CATEGORICAL PRETREATMENT STANDARDS.
National pretreatment standards specifying quantities or concentrations of pollutants or pollutant properties which may be discharged or introduced into a public sewerage system by specific industrial categories.
CHEMICAL OXYGEN DEMAND or COD.
The measure of the organic matter content in wastewater and which is the oxygen equivalent of the organic matter that can be oxidized under standard laboratory procedure using a strong chemical oxidizing agent in an acidic medium.
CITY ENGINEER.
The consulting engineer retained by the city, or his or her authorized agent.
COLLECTION SYSTEM.
Facilities maintained by the city for collecting, pumping, conveying, and controlling wastewater.
COMBINED SEWER.
A sewer that is designed as both a sanitary sewer and a storm sewer.
COMMERCIAL USER.
The occupant or lessee of any premises used for commercial or business purposes which is not an industrial user as defined in this chapter.
COMPATIBLE POLLUTANT.
The pollutants of biochemical oxygen demand, suspended solids, pH, and fecal coliform bacteria, plus additional pollutants which the city treatment works may be specifically designed to treat.
COMPOSITE SAMPLE.
A series of samples mixed together so as to approximate the average strength of discharge to the sewer. A COMPOSITE SAMPLE for 1 day shall consist of a pool of 24 samples, each taken hourly, unless special conditions warrant otherwise and the City Engineer designates an alternative acceptable procedure.
CONTROL MANHOLE.
A manhole as required under the provisions of this chapter; to which wastes produced on premises and discharged into a sanitary sewer are accessible for testing.
COOLING WATER.
The water discharged from any use to which the only pollutant added is heat.
DIRECT DISCHARGE.
The discharge of treated or untreated wastewater directly to the waters of the state.
DOMESTIC SEWAGE.
Wastewater of the type commonly introduced into a treatment works by residential users.
DOMESTIC USER.
Any person who discharges only domestic sewage.
DRAINAGE WATER.
Storm water, ground water, surface drainage, subsurface drainage, spring water, well overflow, roof drainage, or other like drainage other than sewage or industrial wastewater.
EQUIVALENT RESIDENTIAL UNIT or E.R.U.
A volume of wastewater which incurs the same costs for operations and maintenance as the average volume of domestic waste discharged from an average residential dwelling unit in the treatment works service area. For purposes of making this determination the city may utilize the metered water use records. Where a user believes his or her wastewater discharge to the treatment works is substantially different than his or her water consumption, an appropriate adjustment may be made provided the user demonstrates to the satisfaction of the city the actual wastewater discharge.
FLOW.
The daily total of wastewater flow from an industrial, commercial, or domestic user.
GARBAGE.
Solid wastes from the preparation, cooking, and dispensing of food, and from the handling, storage, and sale of produce.
GRAB SAMPLE.
A wastewater sample which is taken from a waste stream on a 1-time basis without regard to the flow in the waste stream and without consideration of time.
HOLDING TANK OR SEPTIC TANK WASTE.
Waste from chemical toilets, campers, trailers, septic tanks, or tank trucks.
INDUSTRIAL DISCHARGER OR USER.
Any nonresidential discharger who discharges industrial wastewaters directly or indirectly into the city sewer system.
INDUSTRIAL WASTEWATER.
Any nondomestic liquid, gaseous substance, or semisolid from any producing, manufacturing business or trade, or processing operation of whatever nature (as distinct from sanitary sewage), including holding tank or septic tank waste.
INDUSTRIAL WASTEWATER DISCHARGE PERMIT.
A permit to discharge industrial wastewaters into the city sewer system issued under the authority of this chapter and which prescribes certain discharge requirements and limitations.
MAY.
The act referred to is permissive.
NATURAL OUTLET.
Any outlet into a watercourse, pond, ditch, or other body of surface or ground water.
OPERATION AND MAINTENANCE.
Activities required to ensure the dependable and economical function of treatment works.
(a) 
OPERATION.
Includes financial and personnel management records, laboratory control, process control, safety and emergency operation planning, attorney fees, consultant fees, court costs, and any costs or fees reasonably associated with any of the above.
(b) 
MAINTENANCE.
Preservation of functional integrity and efficiency of equipment and structures. This includes preventive maintenance, corrective maintenance, and replacement of equipment.
PERSON.
Any individual, company, enterprise, partnership, corporation, association, society, or group.
pH.
The logarithm of the reciprocal of the weight of hydrogen ions in grams per liter of solution.
POLLUTANT.
Any spoil, waste, residue, sewage, garbage, sludge, munitions, chemicals, biological materials, radioactive materials, heat, rock, sand, dirt, soil, agricultural, municipal, or industrial material discharged into water.
POLLUTION.
The degradation of the chemical, physical, biological, or radiological quality of ground, surface, subsurface, or storm drainage waters by humans, or the activities thereof.
PRETREATMENT.
The reduction of the amount of pollutants, the elimination of pollutants, or the alteration of the nature of pollutant properties in wastewater to a less harmful state prior to or in lieu of discharging or otherwise introducing the pollutants into the city sewerage system.
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.
Any sewer operated and maintained by the city.
REPLACEMENT.
Obtaining and installing equipment, accessories, or appurtenances that are necessary during the design or useful life, whichever is longer, of the collection and treatment works to maintain the capacity and performance for which the works were designed and constructed.
RESIDENTIAL USER.
The occupant of a single-family dwelling, or a portion of a multifamily dwelling.
SANITARY SEWER.
A conduit intended to carry liquid and water-carried wastes from residences, commercial buildings, industrial plants, and institutions.
SETTLABLE SOLIDS.
Those solids that are capable of being settled in a standard imhoff cone.
SEWAGE.
A combination of water-carried wastes from residences, commercial buildings, institutions, and industrial establishments, together with such ground, surface, and storm waters as may be present.
SEWAGE TREATMENT PLANT.
An arrangement of devices and structures used for treating sewage.
SEWER.
A pipe or conduit for carrying sewage.
SEWER OPENING.
Includes all lavatories, wash basins, toilets, bathtubs, showers, sinks, laundry trays, floor drains, and any and all other fixtures or connections which shall provide an opening for sewage and waste to be drained into the sewer, but shall not include cleanout openings which are used solely for maintaining, repairing, or cleaning the plumbing system.
SEWER USER.
Any person using a city sewer, or who has a residence, multi-family, or commercial building, institutional building, industrial building, or other structure containing plumbing, requiring connection to a sanitary sewer.
SEWERAGE SYSTEM OR WORKS.
The entire sewage collection and treatment system, exclusive of building sanitary sewers. This includes all conduits, pumps, treatment equipment, and any other components involved in the collection, transportation, treatment, and disposal of domestic and industrial wastewater and sludge.
SHALL.
The act referred to is mandatory.
SIGNIFICANT INDUSTRIAL USER.
Any industrial user of the city POTW who:
(a) 
Has a dry weather wastewater discharge which exceeds 25,000 gallons per day;
(b) 
Is subject to promulgated National Categorical Pretreatment Standards;
(c) 
Requires pretreatment in order to comply with the discharge limitations; or
(d) 
Is found to have significant impact, either singly or in combination with other contributing industries, on the collection or treatment system, the quality of sludge, the system's effluent quality, or air emissions generated by the system.
SLUG.
Any discharge of water, sewage, or industrial waste which in concentration of any constituent or in quantity of flow causes interference to the operation of the POTW.
STORM DRAIN or STORM SEWER.
The portion of the storm drainage system that is within the public right-of-way or easement operated and maintained by the city. This may include but is not limited to pipes, culverts, ditches, waterways, or any other appurtenances used for the removal or transportation of rain water or other unpolluted water.
SUPERINTENDENT.
The Public Works Superintendent of the city or his or her authorized representative.
SUSPENDED SOLIDS.
The total suspended matter that either floats on the surface or is in suspension in wastewater, and that is removable by laboratory filtering.
TOXIC POLLUTANT.
Any pollutant or combination of pollutants listed as toxic in regulations promulgated by the EPA.
UNPOLLUTED WATER.
Water to which no sewage or industrial wastewater has been added; or water which has been used in such a manner that no pollutants have been introduced to the flow.
USER.
Every person using any part of the sewage works of the city.
USER CHARGE.
A charge levied on users of a treatment works for the user's proportionate share of the costs of operation and maintenance (including replacement) of the works.
WASTEWATER.
Liquid or water-carried pollutants including any ground water, surface water, and storm water that may be present, whether treated or untreated, which is contributed into or permitted to enter the POTW.
WATERCOURSE.
A channel in which a flow of water occurs, either continuously or intermittently.
(1993 Code, § 3-2.1.5; Ord. 578, passed 3-4-1991)
This chapter shall not substitute for nor eliminate the necessity for conformity with any and all laws or rules of the state or regulation of the city.
(1993 Code, § 3-2.6.9; Ord. 578, passed 3-4-1991)
The document entitled "Sewerage System Facilities Plan Update, October 1989" is hereby adopted.
(Res. 561, passed 11-5-1990)