For the purpose of this article, the following definitions apply unless the context clearly indicates or requires a different meaning.
APPROVING AUTHORITY. The Business Manager, the Mayor, or his or her duly authorized representative.
BOD (BIOCHEMICAL OXYGEN DEMAND). The quantity of oxygen by weight, expressed in milligrams per liter (mg/l), utilized in the biochemical oxidation of organic matter under standard laboratory conditions for five days at a temperature of 20°C.
BUILDING SEWER. The extension from the building drain to the public sewer or other place of disposal (also called house lateral and house connection).
COD (CHEMICAL OXYGEN DEMAND). Measure of the oxygen consuming capacity of inorganic and organic matter present in the water or wastewater expressed in mg/l as the amount of oxygen consumed from a chemical oxidant in a specific test, but not differentiating between stable and unstable organic matter and thus not necessarily correlating with biochemical oxygen demand.
COMMERCIAL USE. All use not for a dwelling or public building, and includes all roominghouses and hotels having for rent more than four rooms.
CONTROL MANHOLE. A manhole giving access to a building sewer at some point before the building sewer discharge mixes with other discharges in the public sewer.
CONTROL POINT. A point of access to a course of discharge before the discharge mixes with other discharges in the public sewer.
DWELLING. Any housing unit occupied by a single family, and in the case of multiple units, each is a DWELLING.
GARBAGE. Animal and vegetable wastes and residue from preparation, cooking, and dispensing of food; and from the handling, processing, storage, and sale of food products and produce.
INDUSTRIAL WASTE. Waste resulting from any process of industry, manufacturing, trade, or business from the development of any natural resource, or any mixture of the waste with water or normal wastewater, or distinct from normal wastewater.
INDUSTRIAL WASTE CHARGE. The charge made on those persons who discharge industrial wastes into the city’s sewerage system.
MILLIGRAMS PER LITER (MG/L). The same as parts per million and is a weight-to-volume ratio; the milligram-per-liter value multiplied by the factor 8.34 shall be equivalent to pounds per million gallons of water.
NATURAL OUTLET. Any outlet into a watercourse, ditch, lake, or other body of surface water or groundwater.
NORMAL DOMESTIC WASTEWATER. Wastewater excluding industrial wastewater discharged by a person into sanitary sewers and in which the average concentration of total suspended solids is not more than 225 mg/l and BOD is not more than 225 mg/l.
OVERLOAD. The imposition of organic or hydraulic loading on a treatment facility in excess of its engineered design capacity.
pH. The logarithm (base ten) of the reciprocal of the hydrogen ion concentration.
PUBLIC BUILDINGS. The buildings of the state, the county, the city, and school buildings.
PUBLIC SEWER. Pipe or conduit carrying wastewater in which owners of abutting properties shall have the use, subject to control by the city.
SANITARY SEWER. A public sewer that conveys domestic wastewater or industrial wastes, or a combination of both, and into which stormwater, surface water, groundwater, and other unpolluted wastes are not intentionally passed.
SEWAGE. All matter and material placed in the sanitary sewers of the city.
SLUG. Any discharge of water, wastewater, 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 MEASURE. The examination and analytical procedures set forth in the latest edition, at the time of analysis, of Standard Methods for the Examination of Water and Wastewater as prepared, approved, and published jointly by the American Public Health Association, the American Water Works Association, and the Water Pollution Control Federation.
STORM SEWER. A public sewer which carries stormwater and surface water and drainage and into which domestic wastewater or industrial wastes are not intentionally passed.
STORMWATER. Rainfall or any other forms of precipitation.
SUPERINTENDENT. The Water and Wastewater Superintendent of the city, or his or her duly authorized deputy, agent, or representative.
SUSPENDED SOLIDS. Solids measured in mg/l that either float on the surface of, or are in suspension in, water, wastewater, or other liquids, and which are largely removable by a laboratory filtration device.
TO DISCHARGE. Includes to deposit, conduct, drain, emit, throw, run, allow to seep, or otherwise release or dispose of, or to allow, permit, or suffer any of these acts of emission.
TRAP. A device designed to skim, settle, or otherwise remove grease, oil, sand, flammable wastes, or other harmful substances.
UNPOLLUTED WASTEWATER. Water containing:
(1) No free or emulsified grease or oil;
(2) No acids or alkalis;
(3) No phenols or other substances producing taste or odor in receiving water;
(4) No toxic or poisonous substances in suspension, colloidal state, or solution;
(5) No noxious or otherwise obnoxious or odorous gases;
(6) Not more than an insignificant amount in mg/l each of suspended solids and BODs, as determined by the State Water Quality Board; and/or
(7) Color not exceeding 50 units as measured by Platinum Cobalt method of determination as specified in Standard Methods.
WASTE. Rejected, unutilized, or superfluous substance in liquid, gaseous, or solid form resulting from domestic, agricultural, or industrial activities.
WASTEWATER FACILITIES. Includes all facilities for collection, pumping, treating, and disposing of wastewater and industrial wastes.
WASTEWATER SERVICE CHARGE. The charge on all users of the public sewer system whose wastes do not exceed in strength the concentration values established as representative of normal wastewater.
WASTEWATER TREATMENT PLANT. Any city-owned facilities, devices used for receiving, processing, and treating wastewater, industrial waste, and sludges from the sanitary sewers.
WATERCOURSE. A natural or human-made channel in which a flow of water occurs, either continuously or intermittently.
(Prior Code, § 44-117) (Ord. 773, passed 1-6-1987)