§ 51.001 DEFINITIONS.
   For the purpose of this chapter the following definitions shall apply unless the context clearly indicates or requires a different meaning.
   BOD or BIOCHEMICAL OXYGEN DEMAND. The quantity of oxygen utilized in the biochemical oxidation of organic matter under standard laboratory procedure in five days at 20°C, expressed in parts per million by weight.
   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 five feet 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.
   COMBINED SEWER. A sewer receiving both surface runoff and sewage.
   DEPARTMENT. The Department of Public Works of the city.
   DIRECTOR. The Director of Public Works.
   GARBAGE. Solid wastes from the preparation, cooking and dispensing of food, and from the handling, storage, and sale of produce.
   GARBAGE, PROPERLY SHREDDED. The wastes from the preparation, cooking, and dispensing of food that have been cut or shredded to such a degree that all particles will be carried freely under flow conditions normally prevailing in public sewers, with no particle greater than one-half inch in any dimension.
   INDUSTRIAL WASTES. The liquid wastes from industrial processes, as distinct from sanitary sewage.
   NATURAL OUTLET. Any outlet into a watercourse, pond, ditch, lake, or other body of water, either surface or ground water.
   pH. The logarithm of the reciprocal of the weight of hydrogen ions in grams per liter of solution.
   PUBLIC SEWER. A sewer in which all owners of abutting properties have equal rights, and is controlled by public authority.
   SANITARY SEWER. A sewer which carries sewage, and to which storm, surface, and ground waters are not intentionally admitted.
   SEWAGE. A combination of the water-carried wastes from residences, business buildings, institutions, and industrial establishments.
   SEWAGE TREATMENT PLANT. Any arrangements of devices and structures used for treating sewage.
   SEWAGE WORKS. All facilities for collecting, pumping, treating, and disposing of sewage.
   SEWER. A pipe or conduit for carrying sewage.
   STORM SEWER or STORM DRAIN. A sewer which carries storm and surface runoff water and drainage, but excludes sewage and polluted industrial wastes.
   SUSPENDED SOLIDS. Solids that either float on the surface of or are in suspension in water, sewage, or other liquids, and which are removed by laboratory filtering.
   WATERCOURSE. Any channel in which a flow of water occurs, either continuously or intermittently.
(Ord. 99-007, passed 8-2-99; Am. Ord. 21-001, passed 1-25-21)