The following definitions are applicable to this article:
The quantity of oxygen utilized in the biochemical oxidation of organic matter in five days at 20° C., expressed as milligrams per liter. Quantitative determination of BOD shall be made in accordance with procedures set forth in Standard Methods.
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.
The extension from the building drain to the public sewer or other place of disposal beginning outside the inner face of the building wall.
The residue from the preparation, cooking, and dispensing of food, and from the handling, storage, and sale of food products and produce.
The wastewater from industrial process, trade, or business, as distinct from sanitary sewage, including cooling water and the discharge from sewage pretreatment facilities.
Any and all persons, including any individual, firm, company, municipal or private corporation, association, society, institution, enterprise, government agency, or other entity.
The logarithm of the reciprocal of the hydrogen-ion concentration. The concentration is the weight of the hydrogen-ions, in grams per liter of solution. Neutral water, for example, has a pH value of 7 and hydrogen-ion concentration of 10-7.
A sewer that carries liquid and water-carried wastes from residences, commercial buildings, industrial plants, and institutions, together with minor quantities of ground, stormwaters and surface waters that are not admitted intentionally.
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 twenty-four-hour concentration of flows during normal operation and shall adversely affect the system and/or performance of the wastewater treatment works.
The examination and analytical procedures set forth in the most recent edition of Standard Methods for the Examination of Water, Sewage and Industrial Wastes, published jointly by the American Public Health Association, the American Water Works Association, and the Federation of Sewage and Industrial Wastes Associations.
A drain or sewer for conveying water, groundwater, subsurface water or unpolluted water from any source.
Solids that either float on the surface of, or are in suspension in, water, wastewater, or other liquids, and that is removable by laboratory filtering as prescribed in Standard Methods for Examination of Water and Wastewater and is referred to as "nonfilterable residue."
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, but not intentionally admitted.
An arrangement of devices and structures for treating wastewater, industrial wastes, and sludge. Sometimes used as synonymous with "waste treatment."
A natural or artificial channel for the passage of water, either continuously or intermittently.
A document issued by the Wisconsin Department of Natural Resources which established effluent limitations and monitoring requirements for the municipal wastewater treatment facility.