§ 52.01 DEFINITIONS.
   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 5 days at 20°C, expressed in milligrams per liter.
   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, beginning 5 feet (1.5 meters) outside the inner face of the building wall.
   BUILDING SEWER. The extension from the building drain to the public sewer, also called HOUSE CONNECTIONS.
   COMBINED SEWER. A sewer intended to receive both waste water and storm or surface water. This type of connection is not allowed.
   DIRECTOR. The executive director of the Dover-Eyota, St. Charles Area Sanitary District.
   DISTRICT. The Dover-Eyota, St. Charles Area Sanitary District.
   DOMESTIC OR SANITARY WASTE. The waste primarily produced by residential uses as distinct from industrial waste.
   EASEMENT. An acquired legal right for the specific use of land owned by others.
   FLOATABLE OIL. Oil, fat or grease in a physical state that will separate by gravity from waste water by treatment in an approved pretreatment facility. Waste water shall be considered free of floatable fat if it is properly pretreated and the waste water does not interfere with the collection system.
   GARBAGE. Animal and vegetable waste resulting from the handling, preparation, cooking and serving of foods.
   INCOMPATIBLE WASTE. Waste that either singly or by interaction with other wastes interferes with any waste treatment process, constitutes a hazard to humans or animals, creates a public nuisance or creates any hazard in the receiving waters of the waste water treatment plant.
   INDUSTRIAL USERS.
      (1)   Any non-governmental, nonresidential user of a publicly owned treatment works which discharges more than the equivalent of 25,000 gallons per day of domestic or sanitary wastes and which is identified in the Standard Industrial Classification Manual, 1972, Office of Management and Budget, as amended and supplemented under 1 of the following divisions:
         (a)   Division A. Agriculture, Forestry and Fishing;
         (b)   Division B. Mining;
         (c)   Division C. Manufacturing;
         (d)   Division D. Transportation, Communications, Electric, Gas and Sanitary Sewers; or
         (e)   Division E. Services.
      (2)   For the purposes of this definition, domestic or sanitary waste shall be considered to have the following characteristics:
         (a)   BOD/5: 200 mg/l; and
         (b)   Suspended solids: 250 mg/l.
      (3)   Any non-governmental user of a publicly owned treatment works which discharges waste water to the treatment works which contains toxic pollutants or poisonous solids, liquids or gases in sufficient quantity either singly or by interaction with other wastes to contaminate the sludge of any municipal systems, or to injure or to interfere with any sewage treatment process, or which constitutes a hazard to humans or animals, creates a public nuisance or creates any hazard in or has an adverse effect on the waters receiving any discharge from the treatment works.
   INDUSTRIAL WASTES. Waste water discharged by industries.
   MAY. Used to indicate permissive acts (compare with shall).
   NATURAL OUTLET. Any outlet, including storm sewers and combined sewer overflows, into a watercourse, pond, ditch, lake or other body of surface or groundwater.
   PERSON. Any individual, firm, company, association, society, corporation or group.
   pH. The reciprocal of the logarithm of the hydrogen-ion concentration. The hydrogen-ion concentration is the weight of hydrogen-ions, in grams, per liter of solution. Neutral water, for example, has a pH value of 7 and a hydrogen-ion concentration of 10-7.
   PROPERLY SHREDDED GARBAGE. Wastes from preparing, cooking and dispensing 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 2 inches (1.27 centimeters) in any dimension.
   PUBLIC SEWER. Common sewer controlled by a governmental agency or public utility.
   RESIDENTIAL/COMMERCIAL USERS. Users who discharge primarily domestic or sanitary wastes as distinct from industrial users.
   SANITARY SEWER. Sewer that carries liquid and water-carried wastes from residences, commercial buildings, industrial plants and institutions, together with minor quantities of ground, storm and surface waters, that are not admitted intentionally.
   SEWAGE. Spent water of a community. The preferred term is WASTE WATER.
   SEWER. Pipe or conduit that carries waste water.
   SHALL. Used to indicate mandatory acts (compare with MAY.)
   SLUG. Any discharge of water or waste water which in concentration of any given constituent or in quantity of flow exceeds for any period of duration longer than 15 minutes more than 5 times the average 24-hour concentration, or flows during normal operation and shall adversely affect the collection system and/or performance of the waste water treatment works.
   STORM DRAIN. Drain or sewer for conveying water, groundwater, subsurface water or unpolluted water from any source; sometimes called STORM SEWER.
   SUPERINTENDENT. Superintendent of waste water facilities, waste water treatment works, water pollution control of the city, or an authorized deputy, agent or representative, including agents of the district.
   SUSPENDED SOLIDS. Total suspended matter that either floats on the surface of or is suspended in water, waste water or other liquids, and that is removable by laboratory filtering as prescribed in Standards Methods for the Examination of Water and Waste Water 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 benefit by discharge to the sanitary sewers and waste water treatment facilities provided.
   WASTE WATER. 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 storm water that may be present.
   WASTE WATER FACILITIES. Structures, equipment and processes required to collect, carry away and treat domestic and industrial wastes and dispose of the effluent.
   WASTE WATER TREATMENT WORKS. An arrangement of devices and structures for treating waste water, industrial wastes and sludge. Sometimes called WASTE TREATMENT PLANT or WASTE WATER TREATMENT PLANT or WATER POLLUTION CONTROL PLANT.
   WATERCOURSE. Natural or artificial channel for the passage of water either continuously or intermittently.
(1987 Code, § 303.01)