Nevada Administrative Code

NAC 444.750 Definitions. (NRS 439.200, 444.650) As used in NAC 444.750 to 444.8396, inclusive, unless the context otherwise requires, the words and terms defined in NAC 444.7502 to 444.7772, inclusive, have the meanings ascribed to them in those sections. (Supplied in codificatio…

NAC 444.7502 “Absorption trench” defined. (NRS 439.200, 444.650) “Absorption trench” means a trench that is excavated into and uses the native soil for the subsequent absorption and treatment of effluent from a primary treatment unit. (Added to NAC by Bd. of Health by R129-98, ef…

NAC 444.7503 “Accessory structure” defined. (NRS 439.200, 444.650) “Accessory structure” means a building or structure, including, without limitation, a workshop, a home office, guest quarters, a pool house and a garage, that: 1. Is separate from a single-family dwelling; and 2. …

NAC 444.7504 “Administrative authority” defined. (NRS 439.200, 444.650) “Administrative authority” means the official who, or the board, department or agency which, is established and authorized by this State, or by a county, city or other political subdivision of this State, to …

NAC 444.7506 “Aerobic wastewater treatment unit” defined. (NRS 439.200, 444.650) “Aerobic wastewater treatment unit” means a chamber that receives sewage and, through oxidation, decomposes the sewage by the introduction of air into the wastewater to reduce both the level of total…

NAC 444.7508 “Aggregate” defined. (NRS 439.200, 444.650) “Aggregate” means gravel, rock, drain rock or any similar medium used for absorption. (Added to NAC by Bd. of Health by R129-98, eff. 3-25-99)

NAC 444.751 “Alternative absorption system” defined. (NRS 439.200, 444.650) “Alternative absorption system” means a system, other than an absorption trench, that uses the native soil for the subsequent absorption and treatment of effluent from a primary treatment unit. The term i…

NAC 444.7512 “Alternative treatment system” defined. (NRS 439.200, 444.650) “Alternative treatment system” means a system, or a receptacle other than a septic tank, that is designed and constructed to: 1. Receive the discharge of sewage from a building sewer; 2. Partially or comp…

NAC 444.7514 “Approved method of sewage disposal” defined. (NRS 439.200, 444.650) “Approved method of sewage disposal” means a method of sewage treatment and disposal that has been approved by the administrative authority. (Added to NAC by Bd. of Health by R129-98, eff. 3-25-99)

NAC 444.7516 “Approved service provider” defined. (NRS 439.200, 444.650) “Approved service provider” means a person approved by the administrative authority to provide maintenance on an alternative treatment system. (Added to NAC by Bd. of Health by R100-07, eff. 10-31-2007)

NAC 444.7522 “Backflow” defined. (NRS 439.200, 444.650) “Backflow” means the flow of liquid mixtures or substances into the distributing pipe of potable water from any source other than the intended source of the potable water. (Added to NAC by Bd. of Health by R129-98, eff. 3-25…

NAC 444.7524 “Basal area” defined. (NRS 439.200, 444.650) “Basal area” means the area of natural ground that is covered by the fill material of a mound system. (Added to NAC by Bd. of Health by R129-98, eff. 3-25-99)

NAC 444.7525 “Bathroom unit” defined. (NRS 439.200, 444.650) “Bathroom unit” means an area of a single-family dwelling or accessory structure which includes a toilet, a sink, and a bathtub or shower. (Added to NAC by Bd. of Health by R100-07, eff. 10-31-2007)

NAC 444.7528 “Building drain” defined. (NRS 439.200, 444.650) “Building drain” means the piping that conveys sewage within a building or structure. (Added to NAC by Bd. of Health by R129-98, eff. 3-25-99)

NAC 444.753 “Building sewer” defined. (NRS 439.200, 444.650) “Building sewer” means the piping that extends from the end of the building drain and conveys sewage to a public sewer, private sewer, individual sewage disposal system or other point of disposal. (Added to NAC by Bd. o…

NAC 444.7536 “Capping fill trench” defined. (NRS 439.200, 444.650) “Capping fill trench” means a standard drain field trench, where the invert of the disposal drain pipe is at or slightly below the natural grade of the existing soil, which is covered by a soil cap composed of sel…

NAC 444.754 “Cesspool” defined. (NRS 439.200, 444.650) “Cesspool” means a covered excavation in the ground which receives the discharge of domestic sewage or other organic wastes from a drainage system which is designed to retain the organic matter and solids while permitting the…

NAC 444.755 “Commercial system” defined. (NRS 439.200, 444.650) “Commercial system” means an individual sewage disposal system that serves one or more buildings which are not used as single-family dwellings. The term includes, without limitation, an individual sewage disposal sys…

NAC 444.758 “Distribution box” defined. (NRS 439.200, 444.650) “Distribution box” means a watertight structure which receives sewage from a septic tank and distributes such sewage in equal portions to two or more pipelines leading to the disposal area. [Bd. of Health, Indiv. Sewa…

NAC 444.759 “Domestic sewage” defined. (NRS 439.200, 444.650) “Domestic sewage” means liquid and water-borne waste that is derived from the ordinary living process and is of such character as to permit its satisfactory disposal into a public sewer without special treatment or int…

NAC 444.760 “Dosing tank” defined. (NRS 439.200, 444.650) “Dosing tank” means a watertight receptacle located between a septic tank and a disposal area equipped with an automatic siphon device or pumps designed to discharge sewage intermittently in the distribution lines in amoun…

NAC 444.7603 “Drainage channel” defined. (NRS 439.200, 444.650) “Drainage channel” means a natural or artificially created ditch that experiences intermittent water flow from storms or runoff from melting snow. (Added to NAC by Bd. of Health by R100-07, eff. 10-31-2007)

NAC 444.7606 “Effluent” defined. (NRS 439.200, 444.650) “Effluent” means partially or completely treated sewage that flows out of a septic tank or an alternative treatment system. (Added to NAC by Bd. of Health by R129-98, eff. 3-25-99)

NAC 444.7608 “Elevated mound system” defined. (NRS 439.200, 444.650) “Elevated mound system” means a soil absorption system that is elevated above the natural soil surface with a suitable fill material. (Added to NAC by Bd. of Health by R129-98, eff. 3-25-99)

NAC 444.761 “Engineer” defined. (NRS 439.200, 444.650) “Engineer” means a person who is licensed by the State Board of Professional Engineers and Land Surveyors to practice professional engineering. (Added to NAC by Bd. of Health by R129-98, eff. 3-25-99)

NAC 444.7616 “Graywater” defined. (NRS 439.200, 444.650) “Graywater” means untreated household wastewater that has not come into contact with toilet waste. The term includes, without limitation, used water from bathtubs, showers and bathroom washbasins, and water from machines fo…

NAC 444.762 “Health authority” defined. (NRS 439.200, 444.650) “Health authority” means the officers and agents of the Division or of the local boards of health. [Bd. of Health, Indiv. Sewage Disposal Systems Reg. § 1.5, eff. 11-23-72]

NAC 444.7624 “Holding tank” defined. (NRS 439.200, 444.650) “Holding tank” means a watertight, covered receptacle that is designed and constructed to: 1. Receive the discharge of sewage from a building sewer; and 2. Store that sewage until the sewage is removed by a septic tank p…

NAC 444.763 “Impervious soil” defined. (NRS 439.200, 444.650) “Impervious soil” means a layer of earth that demonstrates a percolation rate which is greater than 120 minutes per inch. (Added to NAC by Bd. of Health by R129-98, eff. 3-25-99)

NAC 444.764 “Individual sewage disposal system” defined. (NRS 439.200, 444.650) “Individual sewage disposal system” means a single system of sewage treatment tanks and effluent disposal facilities serving: 1. A single-family dwelling; or 2. In the case of a commercial system, one…

NAC 444.7642 “Irrigation ditch” defined. (NRS 439.200, 444.650) “Irrigation ditch” means a channel that is used to supply water to land used for ranching or farming. The term does not include a channel that contributes to a watercourse. (Added to NAC by Bd. of Health by R129-98, …

NAC 444.7644 “Kitchen unit” defined. (NRS 439.200, 444.650) “Kitchen unit” means an area of a structure which includes a cooking stove, a refrigerator and a sink. (Added to NAC by Bd. of Health by R100-07, eff. 10-31-2007)

NAC 444.7646 “Lot” defined. (NRS 439.200, 444.650) “Lot” means a single or individual parcel of land that is legally recorded and upon which a disposal system or other project subject to the provisions of NAC 444.750 to 444.8396, inclusive, is located. (Added to NAC by Bd. of Hea…

NAC 444.765 “Multiple-dwelling structure” defined. (NRS 439.200, 444.650) “Multiple-dwelling structure” means one or more structures located on one lot which have separate units that are used as living quarters. The term includes, without limitation, a duplex, a triplex, a condom…

NAC 444.7652 “Nitrogen removal wastewater treatment unit” defined. (NRS 439.200, 444.650) “Nitrogen removal wastewater treatment unit” means a system that receives sewage and, through biological denitrification, chemical reduction or ion exchange, reduces the nitrogen level of th…

NAC 444.7654 “Nonsewered toilet” defined. (NRS 439.200, 444.650) “Nonsewered toilet” means a toilet that is not connected to a sewage disposal system. The term includes, without limitation, a freestanding portable toilet and a recreational vehicle and trailer equipped with holdin…

NAC 444.7656 “Percolation rate” defined. (NRS 439.200, 444.650) “Percolation rate” means the relatively constant rate, calculated in minutes per inch, at which clear water maintained at a constant depth will seep out of a standard-size test hole that has been previously saturated…

NAC 444.7658 “Percolation test” defined. (NRS 439.200, 444.650) “Percolation test” means a procedure to measure the percolation rate. (Added to NAC by Bd. of Health by R129-98, eff. 3-25-99)

NAC 444.766 “Person” defined. (NRS 439.200, 444.650) “Person” includes governmental agencies. [Bd. of Health, Indiv. Sewage Disposal Systems Reg. § 1.7, eff. 11-23-72]

NAC 444.7664 “Potable water” defined. (NRS 439.200, 444.650) “Potable water” means water that is satisfactory for drinking, culinary and other domestic purposes and which meets the applicable requirements of the health authority relating to potable water. (Added to NAC by Bd. of …

NAC 444.7666 “Pressure distribution system” defined. (NRS 439.200, 444.650) “Pressure distribution system” means a system of pipes that uses a pump, or a siphon if sufficient elevation head is available, to distribute effluent equally to a disposal field where the volume of efflu…

NAC 444.7668 “Primary treatment unit” defined. (NRS 439.200, 444.650) 1. “Primary treatment unit” means a system or receptacle that is designed and constructed to: (a) Receive the discharge of sewage from a building sewer; (b) Partially or completely treat the sewage; and (c) Dis…

NAC 444.767 “Residential system” defined. (NRS 439.200, 444.650) “Residential system” means an individual sewage disposal system that serves a single-family dwelling. (Added to NAC by Bd. of Health by R129-98, eff. 3-25-99)

NAC 444.768 “Septic tank” defined. (NRS 439.200, 444.650) “Septic tank” means a watertight, covered receptacle designed and constructed to receive the discharge of sewage from a building sewer, to separate solids from the liquid, to digest organic matter and to store digested sol…

NAC 444.770 “Septic tank pumping contractor” defined. (NRS 439.200, 444.650) “Septic tank pumping contractor” means any person engaged in the operation of removing and disposing of the solid and liquid contents of septic tanks, holding tanks, grease traps, grease interceptors, no…

NAC 444.772 “Sewage” defined. (NRS 439.200, 444.650) “Sewage” means a combination of the liquid or water-carried wastes carried by pipes from: 1. Residences, including human excreta and liquid waste from kitchens and water closets; 2. Business buildings; 3. Institutions; and 4. I…

NAC 444.775 “Single-family dwelling” defined. (NRS 439.200, 444.650) 1. “Single-family dwelling” means one or more buildings that: (a) Are designed and used as a home by the occupants of the buildings; (b) Include a bathroom unit and a kitchen unit; and (c) Are served by an indiv…