For the purpose of this chapter, the following definitions shall apply unless the context clearly indicates or requires a different meaning.
AMMONIA or NH3-N. Ammonia measured as nitrogen.
BIOCHEMICAL OXYGEN DEMAND or BOD. Often referred to as total BOD, the quantity of oxygen, expressed in mg/1, utilized in the biochemical oxidation of organic matter under standard laboratory procedures without nitrification inhibition in five days at 20°C.
BUILDING DRAIN. The 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 a building and conveys it to the building sewer at a point five feet, more or less, outside the building wall.
BUILDING DRAIN, SANITARY. A building drain which conveys sanitary or industrial sewage only.
BUILDING DRAIN, STORM. A building drain which conveys stormwater or other clearwater drainage, but not sanitary or industrial sewage.
BUILDING SEWER. The extension from the building drain to the public sewer or other place of disposal. Also called HOUSE CONNECTION.
BUILDING SEWER, SANITARY. A building sewer which conveys sanitary or industrial sewage only.
BUILDING SEWER, STORM. A building sewer which conveys stormwater or other clearwater drainage, but not sanitary or industrial sewage.
CARBONACEOUS BIOCHEMICAL OXYGEN DEMAND or CBOD. The quantity of oxygen, expressed in mg/1, utilized in the biochemical oxidation of organic matter under standard laboratory procedures with nitrification inhibition in five days at 20°C.
CATEGORICAL PRETREATMENT STANDARDS. The standards for pretreatment of industrial wastewaters established by the U.S. Environmental Protection Agency for specific categories of industrial users and which are codified at 40 C.F.R. parts 405 through 471.
COMBINED SEWER. A sewer intended to receive sanitary sewage and industrial sewage, as well as stormwater, surface drainage water, or other unpolluted water from any source.
COMPATIBLE POLLUTANT. Carbonaceous biochemical oxygen demand, biochemical oxygen demand, suspended solids, pH, E. coli, and fecal coliform bacteria, plus additional pollutants identified in the town’s NPDES permit if the municipal wastewater treatment plant was designed to treat the pollutants, and in fact does remove the pollutants to a substantial degree. The term SUBSTANTIAL DEGREE is not subject to precise definition, but generally contemplates removals in the order of 80% or greater. Minor incidental removals in the order of 10% to 30% are not considered substantial. Examples of additional pollutants which may be considered compatible include:
(1) Ammonia;
(2) Chemical oxygen demand;
(3) Phosphorus and phosphorus compounds;
(4) Total organic carbon; and
(5) Fats, oils, and greases of animal or vegetable origin, except as prohibited under this chapter.
DISCHARGE. The discharge or introduction of wastewater from a nonresidential building or structure into the sewage works.
DWELLING UNIT. Any permanent structure which people inhabit on a regular or seasonal basis.
E. COLI. E. coliform bacteria, which is commonly found in the intestinal tract of man and mammals, and whose presence in sewage is an indicator of pollution from human excrement.
EASEMENT. An acquired legal right for a specific use of land owned by others.
EDU (EQUIVALENT DWELLING UNIT). A measure where one unit is equivalent to the wastewater effluent from one home, which is defined as 310 gdp/unit (gallon per day per unit) per State Department of Environmental Management, 327 I.A.C. 3-6-11.
FECAL COLIFORM. Any of a number of organisms common to the intestinal tract of man and animals, whose presence in sanitary sewage is an indicator of pollution.
FLOATABLE OIL. Oil, fat, or grease that will separate by gravity from wastewater so as to be susceptible to treatment and removal in a pretreatment facility approved by the town.
GARBAGE. Solid wastes from the domestic and commercial preparation, cooking, and dispensing of food, and from the handling, storage, and sale of produce.
GRINDER PUMP. A pump designed to accept sewage from a dwelling or combination of dwellings or other user or structure, that grinds the solids into a properly shredded size and pump the resulting effluent by means of pressure into the public sewer system.
INCOMPATIBLE POLLUTANT. Any pollutant that is not defined as a compatible pollutant, including non-biodegradable dissolved solids.
INDUSTRIAL USER. A user who causes a discharge of industrial sewage to the sewage works.
INDUSTRIAL WASTES. The liquid and liquid-carried wastes from any commercial, industrial, manufacturing process or operation, as distinct from sanitary wastes.
INFILTRATION. The water entering the public sewers and the building drains and sewers connecting to the public sewers from soils surrounding the sewers, through means such as, but not limited to, pipe joints, connections, defective pipes, or manhole floors or walls. 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, including but not limited to stormwater and surface water drainage, entering the public sewers and the building drains and sewers connecting to the public sewers from sources such as, but not limited to, roof leaders, cellars, yard and area drains, foundation drains, unpolluted cooling water discharges, drains from springs and swampy areas, leaky manhole covers, cross connections from storm sewers, and combined sewers, catch basins, and stormwater inlets. INFLOW does not include and is distinguished from infiltration.
INSPECTOR. The person or persons duly authorized by the town, through its Council, to inspect and approve the installation of building sewers and their connection to the public sewer system.
INTERFERENCE. A discharge which, alone or in conjunction with a discharge or discharge from other sources, both:
(1) Inhibits or disrupts the municipal wastewater treatment facility, its treatment processes or operations, or its sludge processes, use, or disposal; and
(2) Causes a violation of the town’s NPDES permit, including an increase in the magnitude or duration of a violation, or of the prevention of sewage sludge use or disposal in compliance with any of the following statutory provisions and regulations or permits issued thereunder, or any more stringent state or local regulations: § 405 of the Clean Water Act, 33 U.S.C. § 1345; the Solid Waste Disposal Act (SWDA), 42 U.S.C. §§ 6901 et seq. (including Title II, more commonly referred to as the Resource Conservation and Recovery Act (RCRA), and including state regulations contained in any state sludge management plan prepared pursuant to Subtitle D of the SWDA); the Clean Air Act, 42 U.S.C. §§ 7401 et seq.; and the Toxic Substances Control Act, §§ 15 U.S.C. 2601 et seq.
MAY. The act referred to is permissive.
MUNICIPAL WASTEWATER TREATMENT PLANT or WWTP. The portion of the sewage works which is designed to provide treatment of sewage.
NATURAL OUTLET. Any outlet or conduit, including storm sewers, into a watercourse, pond, lake, or other body of surface or ground water.
NON-CONTACT COOLING WATER. Water used for cooling which does not come into direct contact with any raw material, intermediate product, waste product, or finished product.
NORMAL DOMESTIC STRENGTH SEWAGE. Wastewater or sewage having an average daily concentration of not more than the following:
(1) Carbonaceous biochemical oxygen demand of 200 mg/1;
(2) Total suspended solids of 200 mg/1;
(3) Ammonia, as nitrogen of 20 mg/1; and/or
(4) Phosphorus of five mg/1.
NPDES PERMIT. A permit issued under the National Pollutant Discharge Elimination System for discharge of wastewaters to the waters of the state pursuant to § 402 of the Clean Water Act, 33 U.S.C. § 1342, or comparable authority of the state.
PASS THROUGH. A discharge which exits the municipal wastewater treatment plant into waters of the state in quantities or concentrations which, alone or in conjunction with a discharge or discharges from other sources, is a cause of a violation of any requirement of the town’s NPDES permit, including an increase in the magnitude or duration of a violation.
PERSON. An individual, a partnership, a firm, a company, a corporation, a limited liability company, an unincorporated association, a trust, an estate, a political subdivision, or any other legal entity.
pH. The reciprocal of the logarithm of the hydrogen ion concentration. The concentration is the weight of hydrogen ions, in grams per liter of solution.
PHOSPHORUS or P. The chemical element phosphorus.
PRETREATMENT. The treatment of industrial wastes prior to introduction into a public sewer.
PRIVATE SEWER. A sewer which is not owned by the town.
PROPERLY SHREDDED GARBAGE. Garbage that has 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 in any dimension.
PUBLIC SEWER. A sewer which is owned and controlled by the town and includes one or more of the following components.
(1) COLLECTOR SEWER. A sewer whose primary purpose is to collect wastewaters from individual point source discharges.
(2) FORCE MAIN. A sewer in which wastewater is transported under pressure.
(3) INTERCEPTOR SEWER. A sewer whose primary purpose is to transport wastewater from collector sewers to the wastewater treatment facility.
(4) PUMPING STATION or LIFT STATION. A facility positioned in the public sewer system at which wastewater is pumped to a higher elevation.
SANITARY SEWER. A sewer which carries sanitary and industrial sewage, and to which storm, surface, and ground water are not intentionally admitted.
SEWAGE. The combination of liquid and water-carried wastes from residences, commercial buildings, industrial plants and institutions, including polluted cooling water. The three most common types of sewage are as follows.
(1) COMBINED SEWAGE. Wastes including sanitary sewage, industrial sewage, stormwater, infiltration, and inflow carried to the wastewater treatment facilities by a combined sewer.
(2) INDUSTRIAL SEWAGE. A combination of liquid and water-carried wastes discharged from any industrial establishment, and resulting from any trade or process carried on in that establishment. This term includes, but is not limited to, the wastes from pretreatment facilities and polluted cooling water.
(3) SANITARY SEWAGE. The combination of liquid and water-carried wastes discharged from toilet and other sanitary plumbing facilities.
SEWAGE WORKS. The structures, equipment, and processes owned and used by the town to collect, transport, and treat domestic and industrial sewage and dispose of the effluent and accumulated residual solids.
SEWER. A pipe or conduit for carrying sewage.
SHALL. The act referred to is mandatory.
SIGNIFICANT INDUSTRIAL USER. An industrial user that:
(1) Is subject to one or more categorical pretreatment standards;
(2) Has an average flow of 25,000 gallons per work day or more of process wastewater, excluding sanitary sewage and non-contact cooling water;
(3) Has a flow greater than 5% of the flow carried by the municipal system receiving the waste;
(4) Has in its waste a toxic pollutant in toxic amounts as defined in standards issued under § 307(a) of the Clean Water Act, 33 U.S.C. § 1317(a); or
(5) Has a significant impact, either singly or in combination with other contributing industries, on a treatment works or on the quality of effluent from that treatment works.
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 ten minutes, more than three times the average 24-hour concentration, or flows occurring during normal operation and which may adversely affect the sewage works.
STANDARD METHODS. The laboratory procedures set forth in the latest edition, at the time of analysis, of Standard Methods for the Examination of Water Wastewater prepared and published jointly by the American Public Health Association, the American Water Works Association and the Water Pollution Control Federation.
STORM SEWER. A sewer for conveying stormwater, surface water drainage, ground water, or unpolluted water from any source and to which sanitary and/or industrial sewage are not intentionally admitted.
SUPERINTENDENT. The Superintendent of the municipal sewage works of the town or his or her authorized deputy, agent, or representative.
SURCHARGE. An extra charge for sewerage service assessed upon users whose sewage is of a nature that imposes upon the sewage works a burden greater than that covered by the basic service charge or fee.
SUSPENDED SOLIDS. The total weight of solids per unit liquid volume that either float on the surface of or are in suspension in water, sewage, or other liquids, and which are removable by laboratory filtering under standard laboratory procedure.
TOTAL SOLIDS. The sum of suspended and dissolved solids.
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 equality standards and would not be benefited by discharge to the sanitary sewers and wastewater treatment facilities provided.
USER. Any person who causes a discharge of sanitary or industrial sewage to the sewage works.
VOLATILE ORGANIC MATTER. The material in the sewage solids transformed to gases or vapors when heated at 55°C for 15 to 20 minutes.
WASTEWATER. Liquid and water-carried industrial wastes and sanitary sewage from residences, commercial buildings, industrial facilities and institutions, whether treated or untreated.
WASTEWATER DISCHARGE PERMIT. A permit issued by the Superintendent under this chapter to a user for discharge or introduction of wastewater into the public sewers of the town.
WATERCOURSE. A natural or artificial channel for the conveyance of water either continuously or intermittently.
(2011 Code, § 51.01) (Ord. 2000-6, passed 7-3-2000; Ord. 2001-3, passed 6-4-2001; Ord. 2001-4, passed 6-18-2001; Ord. 2008-1, passed 2-4-2008)