South Dakota Administrative Rules › Title 74 - Department of Environment And Natural Resources › Article 74:53 - Water supply and treatment systems › Chapter 74:53:01 - Individual and small on-site wastewater systems › Section 74:53:01:01 - Definitions

Current through Register Vol. 51, page 10, July 15, 2024
Words defined in SDCL
	 34A-2-2 have the same meaning
	 when used in this chapter. In addition, terms used in this chapter mean:
(1) "AWWA," American Water Works
  Association;
(2) "Absorption bed,"
  a subsurface absorption system which consists of excavations wider than 3 feet
  each, containing a minimum depth of 12 inches of clean aggregate, together with
  a system of absorption lines, through which effluent may seep or leach into the
  surrounding soils;
(3) "Absorption
  field," the soil or soils through which wastewater from an absorption system
  percolates;
(4) "Absorption line,"
  a perforated or open-jointed pipe that is installed in a covered trench or bed
  for the purpose of distributing wastewater to the surrounding soils through the
  perforations or the spaces between sections of the pipe;
(5) "Absorption system," a system which
  utilizes absorption lines in trenches or beds to distribute wastewater to
  adjacent soils in an absorption field;
(6) "Absorption trench," a long, narrow
  excavation made in soil for the placement of an absorption line;
(7) "Adequate wastewater treatment," the
  dispersal of wastewater in a manner which does not cause pollution of ground or
  surface waters or create a public health problem or odors;
(8) "Aerobic wastewater treatment system," a
  method of wastewater treatment utilizing the principle of oxidation in the
  biological decomposition of wastewater by either introducing air into the
  wastewater or allowing surface absorption of air into the wastewater;
(9) "Alternative water-carriage system," an
  on-site wastewater treatment system, other than a conventional septic tank and
  absorption system, designed to provide adequate wastewater treatment;
(10) "Biological decomposition toilet," a
  toilet for human excreta which treats waste biologically through a process of
  aerobic decomposition;
(11)
  "Building or facility sewer," that part of a drainage system extending from a
  building or facility which conveys wastes discharged from the building or
  facility to a public or individual wastewater treatment system;
(12) "Cesspool," a covered underground
  receptacle which receives untreated domestic wastewater and permits the
  untreated domestic wastewater to seep into the surrounding soils;
(13) "Chemical toilet," a toilet constructed
  to accept and discharge human excreta into a deodorizing and liquifying
  chemical solution contained in a watertight tank without the use of water as a
  transport medium;
(14) "Cistern," a
  watertight underground receptacle of nontoxic material designed for the storage
  of potable water;
(15)
  "Conventional individual on-site wastewater system," an individual on-site
  wastewater system composed of a septic tank followed by an absorption
  system;
(16) "Department," the
  South Dakota Department of Environment and Natural Resources;
(17) "Dispersal system," a system for the
  distribution of effluent by such methods as transpiration, evapotranspiration,
  or soil absorption;
(18)
  "Distribution box," a watertight chamber below the outlet level of a septic
  tank or pretreatment unit from which effluent is distributed evenly to various
  portions of an absorption system;
(19) "Domestic wastewater," "domestic
  sewage," waste, other than industrial wastes, derived from premises such as
  houses, trailer courts, commercial buildings, and institutions;
(20) "Dosing chamber," a tank that stores
  pretreated wastewater for periodic pressurized discharges to mounds or
  absorption fields;
(21) "Effluent,"
  the partially or completely treated liquid waste discharge from a wastewater
  treatment system;
(22)
  "Evapotranspiration system," an imperviously lined dispersal system that uses a
  process of evaporation and plant transpiration to withdraw water from the
  soil;
(23) "Experimental system," a
  new device or design which needs further testing to provide information before
  approval;
(24) "Graywater," the
  wastewater generated by water-using fixtures and appliances which do not
  discharge garbage or urinary or fecal wastes;
(25) "Graywater system," a wastewater system
  designed to recycle or treat wastes from sinks, lavatories, tubs, showers,
  washers, or other devices which do not discharge garbage or urinary or fecal
  wastes;
(26) "Grease interceptor,"
  an outdoor unit similar to a septic tank, used to remove excessive amounts of
  grease and oils, by flotation, that may interfere with subsequent treatment of
  the waste;
(27) "Groundwater
  table," the upper surface of a groundwater aquifer in the zone of saturation of
  a geologic formation;
(28) "Holding
  tank," a watertight, covered receptacle which is designed to receive and store
  the discharge of domestic wastewater and is accessible for periodic removal of
  its contents;
(29) "Incinerator
  toilet," a waste disposal system which uses natural gas, propane, or
  electricity to incinerate wastes;
(30) "Individual on-site wastewater system,"
  a system or facility for treating, neutralizing, stabilizing, or dispersing
  wastes from one source;
(31)
  "Invert elevation," the lowest portion of the inside of any horizontal
  pipe;
(32) "Mechanical wastewater
  treatment plants," aerobic systems and package treatment plants;
(33) "Mottling," the spots or blotches of a
  different color or shades of color interspersed with the dominant color of the
  soil that usually indicate that the soil is seasonally saturated;
(34) "No dak system," "mound system," a
  shallow wastewater dispersal system constructed partially aboveground which
  uses plant transpiration and soil absorption for final treatment of
  wastes;
(35) "On-site wastewater
  system," a system designed to contain, distribute, or treat wastewater on or
  near the location where the wastewater is generated, including sewers, septic
  tanks, absorption fields, No dak systems, seepage pits, vault privies, holding
  tanks, subsurface sand filters, graywater systems, pumping stations, dosing
  chambers, and related equipment;
(36) "Owner," a person who is the owner of
  record of the land on which an individual or small on-site wastewater system is
  to be or has been designed, constructed, installed, altered, extended, or
  operated;
(37) "Package treatment
  plants," small or scaled-down versions of municipal wastewater treatment works
  which are generally assembled and shipped as complete mechanical units by the
  manufacturer;
(38) "Percolation
  test," a soil test at the depth of a proposed absorption system to determine
  the water absorption capability of the soil, the results of which are normally
  expressed as the rate at which one inch of water is absorbed over an interval
  of time;
(39) "Pit privy," a
  structure which allows for disposal of human excreta into a pit in the soil
  where a portion of the waste is dispersed by seepage into the surrounding
  soil;
(40) "Plastic limit," the
  soil condition at which soil can easily be rolled into a wire or thread 1/8
  inch in diameter;
(41) "Platted," a
  parcel of land that has been plotted and filed with a local governmental
  authority;
(42) "Potable water,"
  waste that does not contain objectionable pollution, contamination, minerals,
  or infective agents and is considered satisfactory for domestic
  consumption;
(43) "Private water
  system," a water supply system that provides water for human consumption to
  fewer than 15 service connections, that regularly serves fewer than 25
  individuals, or that serves 25 or more individuals for no more than 60 days per
  year;
(44) "Public wastewater
  system," a facility for the treatment of wastewater owned by the state or any
  of its political subdivisions;
(45)
  "Public water system," a water supply system that provides water for human
  consumption to 15 or more service connections or that serves an average of 25
  or more individuals for 60 or more days per year;
(46) "Receptacle," a tank, basin, cistern,
  grease interceptor, or reservoir for the containment of water or wastes or
  both;
(47) "Sand," a soil texture
  composed by weight of at least 25 percent of very coarse, coarse, and medium
  sand varying in size from 2.0 to 0.25 millimeters, less than 50 percent of fine
  or very fine sand varying in size from 0.25 to 0.05 millimeters, and no more
  than 10 percent of particles smaller than 0.05 millimeters;
(48) "Seasonal high groundwater table," the
  highest elevation or level to which a soil is saturated for a week or more as
  observed as a free water surface in an unlined hole or to which it has been
  previously saturated as indicated by mottling, whichever is higher;
(49) "Secretary," the secretary of the
  Department of Environment and Natural Resources or the secretary's authorized
  representative;
(50) "Sedimentation
  tank," a watertight basin or tank in which liquid waste containing settleable
  solids and suspended matter are retained for removal by gravity;
(51) "Seepage pit," a subsurface absorption
  device which consists of a covered excavation no deeper than 4 feet with
  open-jointed walls through which effluent, after primary treatment, may seep or
  leach into the surrounding soil;
(52) "Septage," the liquid and solid material
  pumped from a septic tank, cesspool, or similar domestic sewage treatment
  system, or a holding tank when the system is cleaned or maintained;
(53) "Septic tank," a watertight, accessible,
  covered receptacle which receives domestic wastewater from a building or
  facility sewer, allows solids to settle from the liquid, provides digestion for
  organic solids, stores digested solids through a period of retention, and
  allows clarified liquid to discharge to additional treatment works for final
  treatment and dispersal;
(54)
  "Serial distribution," an arrangement of absorption trenches or beds which
  retains effluent in each component so as to utilize the total effective
  absorption area of each component before allowing the effluent to flow into a
  succeeding component;
(55) "Shallow
  wastewater system," a type of absorption system that relies primarily upon
  evapotranspiration rather than percolation for final treatment of
  wastes;
(56) "Small on-site
  wastewater system," a system or device for the collection, storage, treatment,
  neutralization, stabilization, and dispersal of wastewater from dwellings or
  other facilities which serve 30 or fewer individuals or produce 7,500 gallons
  or less of wastewater per day;
(57)
  "Soil horizon," a layer of soil or soil material approximately parallel to the
  land surface and differing from adjacent genetically related layers in
  physical, chemical, and biological properties or characteristics such as color,
  structure, texture, consistency, and pH;
(58) "Stabilization pond," a diked basin
  which retains wastewater for evaporation or final treatment before discharge of
  liquid effluent;
(59) "Suitable
  soil," a soil which acts as an effective filter in the removal of organisms and
  suspended solids before the effluent reaches any highly permeable earth
  formations such as joints in bedrock, gravels, or very coarse soils;
(60) "Unconventional system," a system or
  device, such as a compost unit, vault privy, or chemical toilet, which receives
  and treats human excreta without the use of water as a transport
  medium;
(61) "Underground
  dispersal," a subsurface infiltration system for the absorption of wastewater
  by adjacent soils and vegetation;
(62) "Vault privy," a structure which allows
  for disposal of human excreta into a watertight vault, provides privacy and
  shelter, and prevents access to the excreta by flies, rodents, and other
  animals;
(63) "Water-carriage
  wastewater system," a system which transports wastes from buildings or other
  facilities hydraulically by the use of water in a piping system; and
(64) "Water supply system," a system of pipes
  and other structures through which water is obtained and distributed for
  consumption from springs, wells and well structures, intakes and cribs, pumping
  stations, treatment plants, reservoirs, storage tanks, cisterns, and related
  appurtenances.
General Authority:
SDCL
		34A-2-93.
Law Implemented:
SDCL
		34A-2-93,
		34A-2-123.