§ 53.055  DEFINITIONS.
   For the purpose of this subchapter, the following definitions shall apply unless the context clearly indicates or requires a different meaning.
   BOD denoting 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 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 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.
   COMBINED SEWER.  A sewer receiving both surface runoff and sewage.
   GARBAGE.  Solid wastes from the domestic and commercial preparation, cooking and dispensing of food, and from the handling, storage and sale of produce.
   INDUSTRIAL WASTES.  The liquid wastes from industrial manufacturing processes, trade or business as distinct from sanitary sewage.
   NATURAL OUTLET.  Any outlet 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 logarithm of the reciprocal of the weight of hydrogen ions in grams per liter of solution.
   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 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 permitted.
   SEWAGE TREATMENT PLANT.  Any arrangement 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.
   SLUG.  Any discharge of water, sewage 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 of flows during normal operation.
   STORM DRAIN.  Sometimes termed STORM SEWER, a sewer which carries storm and surface waters and drainage, but excludes sewage and industrial wastes, other than unpolluted cooling water.
   SUPERINTENDENT.  The Superintendent of the Water and Sewer Committee of the city, or his or her authorized deputy, agent or representative.
   SUSPENDED SOLIDS.  Solids that either float on the surface of, or are in suspension in water, sewage or other liquids, and which are removable by laboratory filtering.
   WATERCOURSE.  A channel in which a flow of water occurs, either continuously or intermittently.
(1975 Code, § 38.23)