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Terms & Acronyms

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Term	Acronym	Vocabulary	Vocabulary Type	Definitions
40 CFR Parts 501 - 503 (Sewage Sludge)		Web Taxonomy-Environmental Laws, Regulations & Treaties	Taxonomy
Domestic Sewage Exclusion	DSE		Abbreviation and Acronym List
Domestic Sewage Study	DSS		Abbreviation and Acronym List
Municipal Sewage		Aquatic Biodiversity Glossary	Glossary and Key Word List	Definition: Wastes (mostly liquid) originating from a community; may be composed of domestic wastewaters and/or industrial discharges.
Municipal Sewage		Drinking Water Technical & Legal Terms	Glossary and Key Word List	Definition: Wastes (mostly liquid) originating from a community; may be composed of domestic wastewaters and/or industrial wastewaters.
Municipal Sewage		Terms of Environment	Glossary and Key Word List	Definition: Wastes (mostly liquid) originating from a community; may be composed of domestic wastewaters and/or industrial discharges.
National Sewage Sludge Rule	NSSR		Abbreviation and Acronym List
Raw Sewage		Terms of Environment	Glossary and Key Word List	Definition: Untreated wastewater and its contents.
Raw Sewage		Aquatic Biodiversity Glossary	Glossary and Key Word List	Definition: Untreated domestic or commercial waste water.
Raw Sewage		Sediment Total Maximum Daily Loads (TMDLs) Glossary	Glossary and Key Word List	Definition: Untreated municipal sewage.
Sewage		I-BEAM Glossary of Terms	Glossary and Key Word List	Definition: The waste and waste water produced by residential and commercial establishments and discharged into sewers.
Sewage		Drinking Water Technical & Legal Terms	Glossary and Key Word List	Definition 1: The used water and solids that flow from homes through sewers to a wastewater treatment plant. The preferred term is WASTEWATER. Definition 2: Liquid and solid wastes carried in sewers.
Sewage		Estuaries Glossary	Glossary and Key Word List	Definition: The wastewater generated by people in homes and businesses.
Sewage		Aquatic Biodiversity Glossary	Glossary and Key Word List	Definition: The total of organic waste and waste water generated by residential and commercial establishments.
Sewage		Terms of Environment	Glossary and Key Word List	Definition: The waste and wastewater produced by residential and commercial sources and discharged into sewers.
Sewage Fungus		Sediment Total Maximum Daily Loads (TMDLs) Glossary	Glossary and Key Word List	Definition: Proliferations of bacteria and/or fungi that may form feathery, cotton-wool-like growths in streams and rivers that have high concentrations of dissolved organic compounds.
Sewage Lagoon		Terms of Environment	Glossary and Key Word List
sewage sludge		Report on the Environment (ROE) Glossary	Glossary and Key Word List	Definition: A semi-solid residue from any of a number of air or water treatment processes. When treated and processed, sewage sludge becomes a nutrient-rich organic material called biosolids.
Sewage Sludge		NPDES Permit Writers Manual Glossary	Glossary and Key Word List	Definition: Any solid, semi-solid, or liquid residue removed during the treatment of municipal waste water or domestic sewage. Sewage sludge includes solids removed during primary, secondary, or advanced wastewater treatment, scum, septage, portable toilet pumpings, type III marine sanitation device pumpings (33 CFR Part 159), and sewage sludge products. Sewage sludge does not include ash generated during the firing of sewage sludge in a sewage sludge incinerator or grit and screenings generated during preliminary treatment of domestic sewage in a treatment works.
Sewage sludge		Pretreatment Acronyms and Glossary	Glossary and Key Word List	Definition: Any solid, semisolid, or liquid residue removed during the treatment of municipal wastewater or domestic sewage. Sewage sludge includes solids removed during primary, secondary, or advanced wastewater treatment, scum, septage, portable toilet pumpings, type III marine sanitation device pumpings (33 CFR Part 159), and sewage sludge products. Sewage sludge does not include grit or screenings, or ash generated during the incineration of sewage sludge. Also referred to as biosolids. [40 CFR 122.2]
Sewage Sludge		Terms of Environment	Glossary and Key Word List	Definition: Sludge produced at a Publicly Owned Treatment Works, the disposal of which is regulated under the Clean Water Act.
Sewage Sludge & Effluents		Web Taxonomy-Substances	Taxonomy
Sewage Treatment Effluent Wells		Underground Injection Control Glossary	Glossary and Key Word List	Definition: Class V wells that are used by privately or publicly owned treatment works (POTWs) to inject treated or untreated domestic sewage through a vertical well or a leachfield. Aquifer recharge wells, aquifer storage and recovery wells, subsidence control wells, and saline intrusion barrier wells injecting treated or untreated wastewater are considered sewage treatment effluent wells.
Sewage Treatment Facilities		Web Taxonomy-Industries	Taxonomy	Definition: This industry comprises establishments primarily engaged in operating sewer systems or sewage treatment facilities that collect, treat, and dispose of waste. [NAICS]
Sewage Treatment Plan	STP		Abbreviation and Acronym List
Sewage Treatment Plants		Estuaries Glossary	Glossary and Key Word List	Definition: Places where wastewater is treated with chemicals and bacteria to produce clean water that can be returned to rivers and other waterways.
Sewage treatment (primary)		Greenhouse Gas Emissions	Glossary and Key Word List	Definition: Mechanical treatment of sewage in which large solids are filtered out by screens and suspended solids settle out as sludge in a sedimentation tank.
Treatment Works Treating Domestic Sewage	TWTDS	National Pollutant Discharge Elimination System (NPDES) Glossary	Glossary and Key Word List	Definition: Includes all POTWs and other facilities that treat domestic wastewater, and facilities that do not treat domestic wastewater, but that treat or dispose of sewage sludge.
Treatment Works Treating Domestic Sewage	TWTDS	NPDES Permit Writers Manual Glossary	Glossary and Key Word List	Definition: A POTW or any other sewage sludge or waste water treatment devices or systems, regardless of ownership (including federal facilities), used in the storage, treatment, recycling, and reclamation of municipal or domestic sewage, including land dedicated for the disposal of sewage sludge. This definition does not include septic tanks or similar devices. For purposes of this definition, domestic sewage includes waste and waste water from humans or household operations that are discharged to or otherwise enter a treatment works.
Wastewater Sewage Treatment Plant	WSTP		Abbreviation and Acronym List
Active Sewage Sludge Unit		EPA EV-Built Environments-Waste Systems	Taxonomy	Definition: Sewage sludge unit that has not closed. [40 CFR 503.21 (CFR 2013)]
Bulk Sewage Sludge		EPA EV-Environmental Events-Waste	Taxonomy	Definition: Sewage sludge that is not sold or given away in a bag or other container for application to the land. [40 CFR 503.11 (CFR 2013)]
Domestic Sewage		EPA EV-Environmental Events-Waste	Taxonomy	Definition: Waste and wastewater from humans or household operations that is discharged to or otherwise enters a treatment works. [40 CFR 503.9 (CFR 2013)]
Existing Sewage Sludge Incineration Unit		EPA EV-Built Environments-Waste Systems	Taxonomy	Definition: Sewage sludge incineration unit the construction of which is commenced on or before October 14, 2010. [40 CFR 62.16045 (CFR 2018)]
Land Applied Sewage Sludge		EPA EV-Environmental Events-Waste	Taxonomy	Definition: Land application of sewage sludge.[40 CFR 503.9 (CFR 2013)]
Municipal Sewage		EPA EV-Environmental Events-Waste	Taxonomy	Definition: Wastes (mostly liquid) originating from a community; may be composed of domestic wastewaters and/or industrial discharges. [Aquatic Biodiversity Glossary]
Raw Sewage		EPA EV-Environmental Events-Waste	Taxonomy	Definition: Untreated domestic or commercial waste water. [Aquatic Biodiversity Glossary]
Raw Sewage Release		EPA EV-Environmental Events-Discharges, Emissions and Releases	Taxonomy	Definition: Release of untreated domestic or commercial waste water. [Adapted from Aquatic Biodiversity Glossary]
Sewage		EPA EV-Environmental Events-Waste	Taxonomy	Definition 1: The waste and wastewater produced by residential and commercial sources and discharged into sewers. [Terms of Environment] Definition 2: Human body wastes and the wastes from toilets and other receptacles intended to receive or retain body wastes [40 CFR 140.1 (CFR 2018)]
Sewage Collection System		EPA EV-Built Environments-Waste Systems	Taxonomy	Definition: Structural system used to collect liquid and solid wastes, i.e. wastewater and excrement
Sewage Disposal Unit		EPA EV-Built Environments-Waste Systems	Taxonomy	Definition: Any stand-alone part of a sewage disposal system.
Sewage Fungus		EPA EV-Biological Substances-Molds & Fungi-Molds & Fungi Roles	Taxonomy	Definition: Proliferations of bacteria and/or fungi that may form feathery, cotton-wool-like growths in streams and rivers that have high concentrations of dissolved organic compounds. [Sediment Total Maximum Daily Loads (TMDLs) Glossary]
Sewage Sludge		EPA EV-Environmental Events-Waste	Taxonomy	Definition 1: Any solid, semi-solid, or liquid residue removed during the treatment of municipal waste water or domestic sewage. Sewage sludge includes, but is not limited to, solids removed during primary, secondary or advanced waste water treatment, scum, septage, portable toilet pumpings, Type III Marine Sanitation device pumpings (33 CFR part 159), and sewage sludge products. Sewage sludge does not include grit, screenings, or ash generated during the incineration of sewage sludge.[40 CFR 501.2 (CFR 2013)] [40 CFR 122.2 (CFR 2013)] Definition 2: Solid, semi-solid, or liquid residue generated during the treatment of domestic sewage in a treatment works. Sewage sludge includes, but is not limited to, domestic septage; scum or solids removed in primary, secondary, or advanced wastewater treatment processes; and a material derived from sewage sludge. Sewage sludge does not include ash generated during the firing of sewage sludge in a sewage sludge incinerator or grit and screenings generated during preliminary treatment of domestic sewage in a treatment works.[40 CFR 503.9 (CFR 2013)] [40 CFR 257.2 (CFR 2013)] Definition 3: Sewage sludge as defined in § 503.9(w) of this chapter that contains < 50 ppm (on a dry weight basis) PCBs.[40 CFR 761.3 (CFR 2013)] Definition 4: Any solid, semisolid, or liquid residue removed during the treatment of municipal wastewater or domestic sewage. Sewage sludge includes solids removed during primary, secondary, or advanced wastewater treatment, scum, septage, portable toilet pumpings, type III marine sanitation device pumpings (33 CFR Part 159), and sewage sludge products. Sewage sludge does not include grit or screenings, or ash generated during the incineration of sewage sludge. Also referred to as biosolids. [40 CFR 122.2] [Pretreatment Acronyms and Glossary] Definition 5: Solid, semi-solid, or liquid residue generated during the treatment of domestic sewage in a treatment works. Sewage sludge includes, but is not limited to, domestic septage; scum or solids removed in primary, secondary or advanced wastewater treatment processes; and a material derived from sewage sludge. Sewage sludge does not include ash generated during the firing of sewage sludge in a sewage sludge incineration unit or grit and screenings generated during preliminary treatment of domestic sewage in a treatment works. [40 CFR 62.16045 (CFR 2018)] Definition 6: Any solid, semi-solid, or liquid residue removed during the treatment of municipal waste water or domestic sewage. Sewage sludge includes solids removed during primary, secondary, or advanced wastewater treatment, scum, septage, portable toilet pumpings, type III marine sanitation device pumpings (33 CFR Part 159), and sewage sludge products. Sewage sludge does not include ash generated during the firing of sewage sludge in a sewage sludge incinerator or grit and screenings generated during preliminary treatment of domestic sewage in a treatment works.[NPDES Permit Writers Glossary]
Sewage Sludge Disposal Practice		EPA EV-Biological Substances-Humans-Human Activities & Behaviors	Taxonomy	Definition: Collection, storage, treatment, transportation, processing, monitoring, use, or disposal of sewage sludge. [40 CFR 122.2 (CFR 2013)]
Sewage Sludge Feed Rate		EPA EV-Regulatory Activities-Regulatory Quantities	Taxonomy	Definition 1: Average daily amount of sewage sludge fired in all sewage sludge incinerators within the property line of the site where the sewage sludge incinerators are located for the number of days in a 365 day period that each sewage sludge incinerator operates, or the average daily design capacity for all sewage sludge incinerators within the property line of the site where the sewage sludge incinerators are located.[40 CFR 503.41 (CFR 2013)] Definition 2: Rate at which sewage sludge is fed into the incinerator unit. [40 CFR 62.16045 (CFR 2018)]
Sewage Sludge Generator		EPA EV-Regulatory Activities-Regulatory Roles	Taxonomy	Definition 1: Person who generates sewage sludge during the treatment of domestic sewage in a treatment works [40 CFR 503.9 (CFR 2013)] Definition 2: Person who derives a material from sewage sludge.[40 CFR 503.9 (CFR 2013)]
Sewage Sludge Incineration Unit		EPA EV-Built Environments-Waste Systems	Taxonomy	Definition: Incineration unit combusting sewage sludge for the purpose of reducing the volume of the sewage sludge by removing combustible matter. Sewage sludge incineration unit designs include fluidized bed and multiple hearth. AN SSI unit also includes, but is not limited to, the sewage sludge feed system, auxiliary fuel feed system, grate system, flue gas system, waste heat recovery equipment, if any, and bottom ash system. The SSI unit includes all ash handling systems connected to the bottom ash handling system. The combustion unit bottom ash system ends at the truck loading station or similar equipment that transfers the ash to final disposal. The SSI unit does not include air pollution control equipment or the stack. [40 CFR 62.16045 (CFR 2018)]
Sewage Sludge Incinerator		EPA EV-Built Environments-Waste Systems	Taxonomy	Definition: Enclosed device in which only sewage sludge and auxiliary fuel are fired.[40 CFR 503.41 (CFR 2013)]
Sewage Sludge Metric		EPA EV-Regulatory Activities-Regulatory Quantities	Taxonomy
Sewage Sludge Placement		EPA EV-Built Environments-Waste Systems	Taxonomy	Definition: Disposal of sewage sludge on a surface disposal site.[40 CFR 503.9 (CFR 2013)]
Sewage Sludge Residue		EPA EV-Environmental Events-Waste	Taxonomy	Definition: A semi-solid residue from any of a number of air or water treatment processes. When treated and processed, sewage sludge becomes a nutrient-rich organic material called biosolids. [Adapted from EPA Report on the Environment Glossary at http://www.epa.gov/ncea/roe/glossary.htm]
Sewage Sludge Storage		EPA EV-Built Environments-Waste Systems	Taxonomy	Definition: Placement of sewage sludge on land on which the sewage sludge remains for two years or less. This does not include the placement of sewage sludge on land for treatment.[40 CFR 503.9 (CFR 2013)]
Sewage Sludge Survey		EPA EV-Research-Research Resources-Analytical Methods & Protocols	Taxonomy
Sewage Sludge Treatment		EPA EV-Built Environments-Waste Systems	Taxonomy	Definition: Preparation of sewage sludge for final use or disposal. This includes, but is not limited to, thickening, stabilization, and dewatering of sewage sludge. This does not include storage of sewage sludge.[40 CFR 503.9 (CFR 2013)]
Sewage Sludge Unit		EPA EV-Built Environments-Waste Systems	Taxonomy	Definition: Land on which only sewage sludge is placed for final disposal. This does not include land on which sewage sludge is either stored or treated. Land does not include waters of the United States, as defined in 40 CFR 122.2. [40 CFR 503.21 (CFR 2013)]
Sewage Sludge Unit Boundary		EPA EV-Built Environments-Waste Systems	Taxonomy	Definition: Outermost perimeter of an active sewage sludge unit. [40 CFR 503.21 (CFR 2013)]
Sewage Sludge Use		EPA EV-Biological Substances-Humans-Human Activities & Behaviors	Taxonomy	Definition: Collection, storage, treatment, transportation, processing, monitoring, use, or disposal of sewage sludge. [40 CFR 122.2 (CFR 2013)]
Sewage Sludge Use or Disposal Standard		EPA EV-Regulatory Activities-Enforcement and Compliance	Taxonomy	Definition 1: Regulations promulgated pursuant to section 405(d) of the CWA which govern minimum requirements for sludge quality, management practices, and monitoring and reporting applicable to sewage sludge or the use or disposal of sewage sludge by any person. [40 CFR 122.2 (CFR 2013)] Definition 2: Regulations promulgated at 40 CFR part 503 pursuant to section 405(d) of the CWA which govern minimum requirements for sludge quality, management practices, and monitoring and reporting applicable to the generation or treatment of sewage sludge from a treatment works treating domestic sewage or use or disposal of that sewage sludge by any person.[40 CFR 501.2 (CFR 2013)]
Sewage Treatment Effluent Well		EPA EV-Built Environments-Waste Systems	Taxonomy	Definition: Class V wells that are used by privately or publicly owned treatment works (POTWs) to inject treated or untreated domestic sewage through a vertical well or a leachfield. Aquifer recharge wells, aquifer storage and recovery wells, subsidence control wells, and saline intrusion barrier wells injecting treated or untreated wastewater are considered sewage treatment effluent wells. [Underground Injection Control Glossary]
Sewage Treatment Works		EPA EV-Built Environments-Waste Systems	Taxonomy	Definition: Municipal or domestic waste treatment facilities of any type which are publicly owned or regulated to the extent that feasible compliance schedules are determined by the availability of funding provided by Federal, State, or local governments. [40 CFR 220.2 (CFR 2013)]
State Sewage Sludge Management Agency		EPA EV-Regulatory Activities-Regulatory Roles	Taxonomy	Definition: Agency designated by the Governor as having the lead responsibility for managing or coordinating the approved State program under this part.[40 CFR 501.2 (CFR 2013)]
Total Sewage Sludge Solid		EPA EV-Regulatory Activities-Regulatory Quantities	Taxonomy	Definition: Materials in sewage sludge that remain as residue when the sewage sludge is dried at 103 to 105 degrees Celsius.[40 CFR 503.31 (CFR 2013)]
Treatment Works Treating Domestic Sewage	TWTDS	EPA EV-Built Environments-Waste Systems	Taxonomy	Definition 1: Includes all POTWs and other facilities that treat domestic wastewater, and facilities that do not treat domestic wastewater, but that treat or dispose of sewage sludge. [National Pollutant Discharge Elimination System (NPDES) Glossary] Definition 2: POTW or any other sewage sludge or wastewater treatment devices or systems, regardless of ownership (including Federal facilities), used in the storage, treatment, recycling, and reclamation of municipal or domestic sewage, including land dedicated for the disposal of sewage sludge. This definition does not include septic tanks or similar devices. For purposes of this definition, “domestic sewage” includes waste and waste water from humans or household operations that are discharged to or otherwise enter a treatment works.[40 CFR 501.2 (CFR 2013)] Definition 3: POTW or any other sewage sludge or waste water treatment devices or systems, regardless of ownership (including federal facilities), used in the storage, treatment, recycling, and reclamation of municipal or domestic sewage, including land dedicated for the disposal of sewage sludge. This definition does not include septic tanks or similar devices. For purposes of this definition, “domestic sewage” includes waste and waste water from humans or household operations that are discharged to or otherwise enter a treatment works. In States where there is no approved State sludge management program under section 405(f) of the CWA, the Regional Administrator may designate any person subject to the standards for sewage sludge use and disposal in 40 CFR part 503 as a “treatment works treating domestic sewage,” where he or she finds that there is a potential for adverse effects on public health and the environment from poor sludge quality or poor sludge handling, use or disposal practices, or where he or she finds that such designation is necessary to ensure that such person is in compliance with 40 CFR part 503. [40 CFR 122.2 (CFR 2013)]
Untreated Sewage Release		EPA EV-Environmental Events-Discharges, Emissions and Releases	Taxonomy	Definition: Release of untreated domestic or commercial waste water. [Adapted from Aquatic Biodiversity Glossary]
Vessel Sewage		EPA EV-Environmental Events-Waste	Taxonomy	Definition: Human body wastes and the wastes from toilets and other receptacles intended to receive or retain body wastes that are discharged from vessels and regulated under section 312 of CWA, except that with respect to commercial vessels on the Great Lakes this term includes graywater. For the purposes of this definition, “graywater” means galley, bath, and shower water. [40 CFR 122.2 (CFR 2013)]

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