For the purpose of this chapter, the following definitions shall apply unless the context clearly indicates or requires a different meaning.
BIOCHEMICAL OXYGEN DEMAND (BOD). 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 DRAIN. The 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, beginning five feet (one and one-half 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, also called HOUSE CONNECTION.
COMBINED SEWER. A sewer intended to receive both wastewater and storm or surface water.
EASEMENT. An acquired legal right for the specific 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 treatment in an approved pre-treatment 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. The animal and vegetable waste resulting from the handling, preparation, cooking and serving of foods.
INDUSTRIAL WASTES. The wastewater from industrial processes, trade or business as distinct from domestic or sanitary wastes.
NATURAL OUTLET. Any outlet, including storm sewers and combined sewer overflows, into a watercourse, pond, ditch, lake or other body of surface or groundwater.
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 and a hydrogen-ion concentration of ten to seven.
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 one-half inch (1.27 centimeters) in any dimension.
PUBLIC SEWER. A common sewer controlled by a governmental agency or public utility.
SANITARY SEWER. A sewer that carries liquid and water-carried wastes from residences, commercial buildings, industrial plants and institutions together with minor quantities of groundwater, stormwater and surface waters that are not admitted intentionally.
SEWAGE. The spent water of a community. The preferred term is WASTEWATER.
SEWER. A pipe or conduit that carries wastewater or drainage water.
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 15 minutes more than five times the average 24-hour concentration or flows during normal operation and shall adversely affect the collection system and/or performance of the wastewater treatment works.
STORM DRAIN or STORM SEWER. A drain or sewer for conveying water, groundwater, subsurface water or unpolluted water from any source.
SUPERINTENDENT. The Superintendent of wastewater facilities and/or of wastewater treatment works and/or of water pollution control) of the city.
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.
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.
WASTEWATER. The spent water of a community. From the standpoint of source, 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 TREATMENT WORKS. An arrangement of devices and structures for treating wastewater, industrial wastes and sludge. Sometimes used as synonymous with “waste treatment plant” or “wastewater treatment plant” or “water pollution control plant.”
WATERCOURSE. A natural or artificial channel for the passage of water either continuously or intermittently.
(Prior Code, § 18-61) (Ord. 511, passed 9-20-1982)
Statutory reference:
Sewer systems, see SDCL §§ 9-48-1 et seq.