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74:53:01:01. Definitions.\r\nWords defined in SDCL 34A-2-2 have the same meaning when used in this chapter. In addition, terms used in this chapter mean:
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(1) "AWWA,"\r\nAmerican Water Works Association;
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(2) "Absorption\r\nbed," a subsurface absorption system which consists of excavations wider\r\nthan 3 feet each, containing a minimum depth of 12 inches of clean aggregate,\r\ntogether with a system of absorption lines, through which effluent may seep or\r\nleach into the surrounding soils;
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(3) "Absorption\r\nfield," the soil or soils through which wastewater from an absorption\r\nsystem percolates;
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(4) "Absorption\r\nline," a perforated or open-jointed pipe that is installed in a covered\r\ntrench or bed for the purpose of distributing wastewater to the surrounding\r\nsoils through the perforations or the spaces between sections of the pipe;
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(5) "Absorption\r\nsystem," a system which utilizes absorption lines in trenches or beds to\r\ndistribute wastewater to adjacent soils in an absorption field;
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(6) "Absorption\r\ntrench," a long, narrow excavation made in soil for the placement of an\r\nabsorption line;
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(7) "Adequate\r\nwastewater treatment," the dispersal of wastewater in a manner which does\r\nnot cause pollution of ground or surface waters or create a public health\r\nproblem or odors;
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(8) "Aerobic\r\nwastewater treatment system," a method of wastewater treatment utilizing\r\nthe principle of oxidation in the biological decomposition of wastewater by\r\neither introducing air into the wastewater or allowing surface absorption of\r\nair into the wastewater;
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(9) "Alternative\r\nwater-carriage system," an on-site wastewater treatment system, other than\r\na conventional septic tank and absorption system, designed to provide adequate\r\nwastewater treatment;
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(10) "Biological\r\ndecomposition toilet," a toilet for human excreta which treats waste\r\nbiologically through a process of aerobic decomposition;
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(11) "Building\r\nor facility sewer," that part of a drainage system extending from a\r\nbuilding or facility which conveys wastes discharged from the building or\r\nfacility to a public or individual wastewater treatment system;
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(12) "Cesspool,"\r\na covered underground receptacle which receives untreated domestic wastewater\r\nand permits the untreated domestic wastewater to seep into the surrounding\r\nsoils;
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(13) "Chemical\r\ntoilet," a toilet constructed to accept and discharge human excreta into a\r\ndeodorizing and liquifying chemical solution contained in a watertight tank\r\nwithout the use of water as a transport medium;
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(14) "Cistern,"\r\na watertight underground receptacle of nontoxic material designed for the\r\nstorage of potable water;
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(15) "Conventional\r\nindividual on-site wastewater system," an individual on-site wastewater\r\nsystem composed of a septic tank followed by an absorption system;
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(16) "Department,"\r\nthe South Dakota Department of Agriculture and Natural Resources;
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(17) "Dispersal\r\nsystem," a system for the distribution of effluent by such methods as\r\ntranspiration, evapotranspiration, or soil absorption;
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(18) "Distribution\r\nbox," a watertight chamber below the outlet level of a septic tank or\r\npretreatment unit from which effluent is distributed evenly to various portions\r\nof an absorption system;
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(19) "Domestic\r\nwastewater," "domestic sewage," waste, other than industrial\r\nwastes, derived from premises such as houses, trailer courts, commercial\r\nbuildings, and institutions;
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(20) "Dosing\r\nchamber," a tank that stores pretreated wastewater for periodic\r\npressurized discharges to mounds or absorption fields;
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(21) "Effluent,"\r\nthe partially or completely treated liquid waste discharge from a wastewater\r\ntreatment system;
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(22) "Evapotranspiration\r\nsystem," an imperviously lined dispersal system that uses a process of\r\nevaporation and plant transpiration to withdraw water from the soil;
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(23) "Experimental\r\nsystem," a new device or design which needs further testing to provide\r\ninformation before approval;
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(24) "Graywater,"\r\nthe wastewater generated by water-using fixtures and appliances which do not\r\ndischarge garbage or urinary or fecal wastes;
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(25) "Graywater\r\nsystem," a wastewater system designed to recycle or treat wastes from\r\nsinks, lavatories, tubs, showers, washers, or other devices which do not\r\ndischarge garbage or urinary or fecal wastes;
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(26) "Grease\r\ninterceptor," an outdoor unit similar to a septic tank, used to remove\r\nexcessive amounts of grease and oils, by flotation, that may interfere with\r\nsubsequent treatment of the waste;
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(27) "Groundwater\r\ntable," the upper surface of a groundwater aquifer in the zone of\r\nsaturation of a geologic formation;
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(28) "Holding\r\ntank," a watertight, covered receptacle which is designed to receive and\r\nstore the discharge of domestic wastewater and is accessible for periodic\r\nremoval of its contents;
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(29) "Incinerator\r\ntoilet," a waste disposal system which uses natural gas, propane, or\r\nelectricity to incinerate wastes;
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(30) "Individual\r\non-site wastewater system," a system or facility for treating,\r\nneutralizing, stabilizing, or dispersing wastes from one source;
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(31) "Invert\r\nelevation," the lowest portion of the inside of any horizontal pipe;
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(32) "Mechanical\r\nwastewater treatment plants," aerobic systems and package treatment\r\nplants;
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(33) "Mottling,"\r\nthe spots or blotches of a different color or shades of color interspersed with\r\nthe dominant color of the soil that usually indicate that the soil is\r\nseasonally saturated;
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(34) "No dak\r\nsystem," "mound system," a shallow wastewater dispersal system\r\nconstructed partially aboveground which uses plant transpiration and soil\r\nabsorption for final treatment of wastes;
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(35) "On-site\r\nwastewater system," a system designed to contain, distribute, or treat\r\nwastewater on or near the location where the wastewater is generated, including\r\nsewers, septic tanks, absorption fields, No dak systems, seepage pits, vault\r\nprivies, holding tanks, subsurface sand filters, graywater systems, pumping\r\nstations, dosing chambers, and related equipment;
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(36) "Owner,"\r\na person who is the owner of record of the land on which an individual or small\r\non-site wastewater system is to be or has been designed, constructed,\r\ninstalled, altered, extended, or operated;
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(37) "Package\r\ntreatment plants," small or scaled-down versions of municipal wastewater\r\ntreatment works which are generally assembled and shipped as complete\r\nmechanical units by the manufacturer;
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(38) "Percolation\r\ntest," a soil test at the depth of a proposed absorption system to\r\ndetermine the water absorption capability of the soil, the results of which are\r\nnormally expressed as the rate at which one inch of water is absorbed over an interval\r\nof time;
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(39) "Pit\r\nprivy," a structure which allows for disposal of human excreta into a pit\r\nin the soil where a portion of the waste is dispersed by seepage into the\r\nsurrounding soil;
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(40) "Plastic\r\nlimit," the soil condition at which soil can easily be rolled into a wire\r\nor thread 1/8 inch in diameter;
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(41) "Platted,"\r\na parcel of land that has been plotted and filed with a local governmental\r\nauthority;
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(42) "Potable\r\nwater," waste that does not contain objectionable pollution,\r\ncontamination, minerals, or infective agents and is considered satisfactory for\r\ndomestic consumption;
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(43) "Private\r\nwater system," a water supply system that provides water for human\r\nconsumption to fewer than 15 service connections, that regularly serves fewer\r\nthan 25 individuals, or that serves 25 or more individuals for no more than 60\r\ndays per year;
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(44) "Public\r\nwastewater system," a facility for the treatment of wastewater owned by\r\nthe state or any of its political subdivisions;
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(45) "Public\r\nwater system," a water supply system that provides water for human\r\nconsumption to 15 or more service connections or that serves an average of 25\r\nor more individuals for 60 or more days per year;
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(46) "Receptacle,"\r\na tank, basin, cistern, grease interceptor, or reservoir for the containment of\r\nwater or wastes or both;
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(47) "Sand,"\r\na soil texture composed by weight of at least 25 percent of very coarse,\r\ncoarse, and medium sand varying in size from 2.0 to 0.25 millimeters, less than\r\n50 percent of fine or very fine sand varying in size from 0.25 to 0.05\r\nmillimeters, and no more than 10 percent of particles smaller than 0.05\r\nmillimeters;
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(48) "Seasonal\r\nhigh groundwater table," the highest elevation or level to which a soil is\r\nsaturated for a week or more as observed as a free water surface in an unlined\r\nhole or to which it has been previously saturated as indicated by mottling,\r\nwhichever is higher;
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(49) "Secretary,"\r\nthe secretary of the Department of Agriculture and Natural Resources or the secretary's\r\nauthorized representative;
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(50) "Sedimentation\r\ntank," a watertight basin or tank in which liquid waste containing\r\nsettleable solids and suspended matter are retained for removal by gravity;
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(51) "Seepage\r\npit," a subsurface absorption device which consists of a covered\r\nexcavation no deeper than 4 feet with open-jointed walls through which\r\neffluent, after primary treatment, may seep or leach into the surrounding soil;
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(52) "Septage,"\r\nthe liquid and solid material pumped from a septic tank, cesspool, or similar\r\ndomestic sewage treatment system, or a holding tank when the system is cleaned\r\nor maintained;
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(53) "Septic\r\ntank," a watertight, accessible, covered receptacle which receives\r\ndomestic wastewater from a building or facility sewer, allows solids to settle\r\nfrom the liquid, provides digestion for organic solids, stores digested solids\r\nthrough a period of retention, and allows clarified liquid to discharge to\r\nadditional treatment works for final treatment and dispersal;
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(54) "Serial\r\ndistribution," an arrangement of absorption trenches or beds which retains\r\neffluent in each component so as to utilize the total effective absorption area\r\nof each component before allowing the effluent to flow into a succeeding\r\ncomponent;
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(55) "Shallow\r\nwastewater system," a type of absorption system that relies primarily upon\r\nevapotranspiration rather than percolation for final treatment of wastes;
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(56) "Small\r\non-site wastewater system," a system or device for the collection,\r\nstorage, treatment, neutralization, stabilization, and dispersal of wastewater\r\nfrom dwellings or other facilities which serve 30 or fewer individuals or\r\nproduce 7,500 gallons or less of wastewater per day;
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(57) "Soil\r\nhorizon," a layer of soil or soil material approximately parallel to the\r\nland surface and differing from adjacent genetically related layers in\r\nphysical, chemical, and biological properties or characteristics such as color,\r\nstructure, texture, consistency, and pH;
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(58) "Stabilization\r\npond," a diked basin which retains wastewater for evaporation or final\r\ntreatment before discharge of liquid effluent;
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(59) "Suitable\r\nsoil," a soil which acts as an effective filter in the removal of\r\norganisms and suspended solids before the effluent reaches any highly permeable\r\nearth formations such as joints in bedrock, gravels, or very coarse soils;
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(60) "Unconventional\r\nsystem," a system or device, such as a compost unit, vault privy, or\r\nchemical toilet, which receives and treats human excreta without the use of\r\nwater as a transport medium;
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(61) "Underground\r\ndispersal," a subsurface infiltration system for the absorption of\r\nwastewater by adjacent soils and vegetation;
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(62) "Vault\r\nprivy," a structure which allows for disposal of human excreta into a\r\nwatertight vault, provides privacy and shelter, and prevents access to the\r\nexcreta by flies, rodents, and other animals;
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(63) "Water-carriage\r\nwastewater system," a system which transports wastes from buildings or\r\nother facilities hydraulically by the use of water in a piping system; and
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(64) "Water\r\nsupply system," a system of pipes and other structures through which water\r\nis obtained and distributed for consumption from springs, wells and well\r\nstructures, intakes and cribs, pumping stations, treatment plants, reservoirs, storage\r\ntanks, cisterns, and related appurtenances.
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Source: 12 SDR 2,\r\neffective July 18, 1985; 13 SDR 129, 13 SDR 141, effective July 1, 1987;\r\ntransferred from § 74:03:01:38, July 1, 1996; 23 SDR 180, effective April\r\n30, 1997; SL 2021, ch 1, §§ 8, 19, effective April 19, 2021.
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General Authority: SDCL 34A-2-93.
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Law Implemented: SDCL 34A-2-93, 34A-2-123.
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