Skip to code content (skip section selection)
Unless the context specifically indicates otherwise, the meaning of terms used in this chapter shall be as follows:
BIOCHEMICAL OXYGEN DEMAND (BOD): The quantity of oxygen utilized in the biochemical oxidation of organic matter under standard laboratory procedure in five (5) days at twenty degrees centigrade (20°C) expressed in milligrams per liter.
BUILDING DRAIN: That part of the lowest horizontal piping of a drainage system which receives the discharge of wastewater and other drainage pipes inside the wall of the building and conveys it to the building sewer, beginning five feet (5') (1.5 meters) outside the inner face of the building wall.
BUILDING SEWER: A sewer intended to receive wastewater.
COMBINED SEWER: A sewer intended to receive both wastewater and storm or surface water is prohibited.
EASEMENT: An acquired legal right for the specific use of land owned by others.
ENGINEER: The person designated with that title by the town or licensed professional civil or sanitary engineer authorized by the town commission to act as the town's engineer.
FLOATABLE OIL: Oil, fat, or grease in a physical state such that it will separate by gravity from wastewater by treatment in an approved pretreatment facility. Wastewater shall not be considered free of floatable fat if it interferes with the collection system.
GARBAGE: Animal and vegetable waste resulting from the handling, preparation, cooking and serving of foods.
HEARING BOARD: That board appointed according to the provisions of section 10-1-7 of this chapter.
INDUSTRIAL USER: A. Any user which discharges more than the equivalent of twenty five thousand (25,000) gallons per day (gpd) of sanitary wastes and which is identified in the "Standard Industrial Classifications Manual", 1972, office of management and budget, as amended and supplemented under one of the following divisions:
Division A: Agriculture, forestry and fishing
Division B: Mining
Division C: Manufacturing
Division D: Transportation, communications, electric, gas and sanitary services
Division E: Services; or
B. Any user which discharges wastewater 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 town system, or to injure or interfere with any sewage treatment process, or which constitutes a hazard to humans, or animals, creates a public nuisance, or creates a hazard in or has an adverse effect on the waters receiving any discharge from the treatment works.
INFILTRATION: Water other than wastewater that enters a sewage system (including sewer service connections) from the ground through such means as defective pipes, pipe joints, connections, or manholes. Infiltration does not include, and is distinguished from, inflow.
INFILTRATION/INFLOW: The total quantity of water from both infiltration and inflow without distinguishing the source.
INFLOW: Water other than wastewater and infiltration that enters a sewage system.
INTERCEPTOR SEWER: A sewer whose primary purpose is to transport wastewater from collector sewers to a treatment facility.
LATERAL SEWER: A sewer that discharges into another sewer and has no other common sewer tributary to it.
MAY: Permissive (see definition of Shall).
NATURAL OUTLET: Any outlet, including storm sewers and grandfathered combined sewer overflows into a watercourse, pond, ditch, lake, or other body of surface or ground water.
OUTFALL SEWER: A sewer that receives wastewater from a collecting system or from a treatment plant and carries it to a final discharge point.
PERSON: Any individual, firm, company, association, society, corporation, or group.
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 7 and a hydrogen ion concentration of 10-7.
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 sewer, with no particle greater than one-half inch (1/2") (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 ground, storm and surface waters that are not admitted intentionally.
SEPTIC TANK: Any properly sized watertight receptacle which receives the discharge of sewage or wastewater and is designed and constructed to retain solids, digest organic matter through a period of detention and allow liquids to discharge into the soil outside of the tank through a system of open joint piping or from a seepage pit meeting the requirements of the uniform plumbing code is prohibited within the town limits.
SEPTIC TANK WASTES: That portion of the tank contents, including solids, liquids and combinations thereof, that is periodically pumped and disposed of.
SEWAGE: The spent water of a community. The preferred term is "wastewater".
SEWAGE COLLECTION SYSTEM: Each and all of the common lateral sewers within a publicly owned treatment system which are primarily installed to receive wastewater directly from facilities which convey wastewater from individual structures or from private property and which include service connection fittings designed for connection with those facilities. The facilities which convey wastewater from individual structures, from private property to the public lateral sewer, or its equivalent, are specifically excluded from the definition, with the exception of pumping units and pressurized lines, for individual structures or groups of structures when such units are owned and maintained by the town.
SEWER: A pipe or conduit that carries wastewater or drainage water.
SHALL: Mandatory (see definition of May).
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 fifteen (15) minutes more than five (5) times the average twenty four (24) hour concentration or flows during normal operations 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.
SUSPENDED SOLIDS: Total suspended matter (TSS) 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.
TOWN: The town of Ennis, Montana.
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 self-contained motor homes/mobile trailers 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", "wastewater treatment facility", "wastewater treatment plant", or "water pollution control plant".
WATERCOURSE: A neutral or artificial channel for the passage of water either continuously or intermittently. (Per motion dated 3-12-2009)