CHAPTER 444 - SANITATION

NAC 444.804 Construction of septic tank. (NRS 439.200, 444.650) 1. Plans for a septic tank which have not been previously approved by the health authority must be submitted to the health authority for approval. The plans must show all dimensions, reinforcing, structural calculati…

NAC 444.806 Precast septic tanks. (NRS 439.200, 444.650) For precast septic tanks: 1. All forms used in placing concrete must be smooth, and sufficiently designed and braced to maintain their alignment under the pressure of the concrete during placing. 2. Precast sections must be…

NAC 444.808 Built-in-place septic tanks. (NRS 439.200, 444.650) A built-in-place septic tank must be designed by an engineer and constructed in accordance with NAC 444.804 to 444.810, inclusive. The design plans for a built-in-place septic tank must be submitted to the health aut…

NAC 444.810 Coated steel septic tanks. (NRS 439.200, 444.650) 1. Coated steel septic tanks must be made of commercial grade sheet steel of good welding quality and must have a bituminous coating applied in accordance with subsection 2. Only new materials may be used, and the thic…

NAC 444.815 Plumbing accessory structure into system serving single-family dwelling. (NRS 439.200, 444.650) 1. An accessory structure may be allowed to plumb into an individual sewage disposal system that serves a single-family dwelling if: (a) The accessory structure is used in …

NAC 444.818 Limitations and site requirements. (NRS 439.200, 444.650) 1. Cesspools are prohibited. 2. The discharge of surface, rain and other clear water into an individual sewage disposal system is prohibited. 3. An absorption system that must be specially designed because of t…

NAC 444.820 General requirements for and restrictions on operation. (NRS 439.200, 444.650) 1. A person shall not engage in the operation of removing and disposing of the solid and liquid contents of septic tanks, holding tanks, grease traps, grease interceptors, portable toilets …

NAC 444.821 Permit: Contents; validity and transferability. (NRS 439.200, 444.650) 1. A permit issued by the health authority to a septic tank pumping contractor must contain: (a) The name, business address and mailing address of the person to whom the permit is issued; and (b) T…

NAC 444.822 Permit: Conditions that require amendment. (NRS 439.200, 444.650) A holder of a permit to operate as a septic tank pumping contractor must amend the permit pursuant to NAC 444.820 before he or she may: 1. Use a vehicle or tank which is not listed on the permit to remo…

NAC 444.823 Permit: Renewal. (NRS 439.200, 444.650) A permit to operate as a septic tank pumping contractor is valid for 1 year after the date of issuance. To renew a permit, the holder of the permit must submit a completed application for renewal to the health authority not less…

NAC 444.824 Recordkeeping requirements. (NRS 439.200, 444.650) 1. A septic tank pumping contractor shall keep a record of each removal and disposal of solid or liquid waste by the septic tank pumping contractor. The record must include: (a) The type of solid or liquid waste that …

NAC 444.825 Toilet facilities for special events. (NRS 439.200, 444.650) 1. The operator of a special event shall provide toilet facilities at the special event for: (a) Persons who are working at the special event; and (b) Patrons attending the special event. 2. Toilet facilitie…

NAC 444.826 General requirements. (NRS 439.200, 444.650) 1. Before a person may operate a service to provide nonsewered toilets, the person must obtain a permit pursuant to this section and NAC 444.820 and 444.828. A nonsewered toilet must not be used for the permanent disposal o…

NAC 444.828 Schedule of fees. (NRS 439.150, 439.200, 444.650) The Division shall charge and collect fees for its services in accordance with the following schedule, except in areas where the laws and regulations governing individual sewage disposal systems and septic tank pumping…

NAC 444.8301 General requirements for primary treatment unit; use of alternative treatment system. (NRS 439.200, 444.650) 1. All liquid waste and wastewater must be discharged into a septic tank or other approved primary treatment unit. Graywater may be discharged separately in a…

NAC 444.8302 Plans for commercial systems to be submitted for review. (NRS 439.200, 444.650) The plans for a commercial system must be submitted for review to the Division of Environmental Protection of the State Department of Conservation and Natural Resources. (Added to NAC by …

NAC 444.8304 General requirements for septic tank used as primary treatment unit or with alternative treatment system. (NRS 439.200, 444.650) A septic tank that is used as a primary treatment unit or in conjunction with an alternative treatment system must meet the requirements o…

NAC 444.8306 Capacity of septic tank serving single-family dwelling. (NRS 439.200, 444.650) 1. The minimum capacity for a septic tank that serves a single-family dwelling is based on the number of bedrooms in the dwelling, and is determined as follows: Number of Bedrooms Minimum …

NAC 444.8314 Aerobic wastewater treatment unit: Maintenance; repair or replacement; required use. (NRS 439.200, 444.650) 1. An aerobic wastewater treatment unit requires routine maintenance. The owner of an individual sewage disposal system that will include an aerobic wastewater…

NAC 444.8316 Aerobic wastewater treatment unit: Approval required; design criteria; limitations on use; manual of operation and maintenance. (NRS 439.200, 444.650) 1. An aerobic wastewater treatment unit must be approved by: (a) NSF International pursuant to its Standard 40; (b) …

NAC 444.8318 Aerobic wastewater treatment unit: Inspection. (NRS 439.200, 444.650) 1. The construction of an aerobic wastewater treatment unit must be inspected and verified by an engineer. The inspections must be conducted when: (a) The absorption trenches have been excavated or…

NAC 444.8321 Nitrogen removal wastewater treatment unit: Maintenance; repair or replacement; required use; regulatory oversight program. (NRS 439.200, 444.650) 1. A nitrogen removal wastewater treatment unit requires routine maintenance. The owner of an individual sewage disposal…

NAC 444.8322 Nitrogen removal wastewater treatment unit: Approval required; design criteria; limitations on use; manual of operation and maintenance. (NRS 439.200, 444.650) 1. A nitrogen removal wastewater treatment unit must be approved by: (a) NSF International pursuant to its …

NAC 444.8324 Nitrogen removal wastewater treatment unit: Inspection. (NRS 439.200, 444.650) 1. The construction of a nitrogen removal wastewater treatment unit must be inspected and verified by an engineer. The inspections must be conducted when: (a) The absorption trenches have …

NAC 444.8326 Dosing tank: General requirements. (NRS 439.200, 444.650) 1. A dosing tank must be used if: (a) It is necessary to raise the elevation of the wastewater for further treatment or disposal of sewage; (b) Intermittent dosing of the disposal field is desired; (c) A press…

NAC 444.8328 Dosing tank: Design criteria. (NRS 439.200, 444.650) 1. A dosing tank must have sufficient volume to provide for the volume desired for dosing and a reserve volume. The reserve volume, which is equal to the volume of the tank between the alarm switch for high levels …

NAC 444.833 Distribution box: General requirement; design criteria. (NRS 439.200, 444.650) 1. Except where a pressure distribution system is used, a distribution box must be used in an absorption system if more than one distribution line is used. 2. A distribution box must be wat…

NAC 444.835 Soil absorption system: General requirements. (NRS 439.200, 444.650) 1. The effluent from a septic tank or other primary treatment unit must be disposed of through a soil absorption trench or through an absorption system approved by the administrative authority. 2. Th…

NAC 444.8352 Absorption trench system: General requirements; design calculations. (NRS 439.200, 444.650) 1. An individual sewage disposal system utilizing absorption trenches may be used wherever practical except if limiting conditions such as high groundwater, sloping terrain, i…

NAC 444.8354 Absorption trench system: Design criteria. (NRS 439.200, 444.650) 1. The bottom of an absorption trench that is used in an individual sewage disposal system must be level and not less than 1 foot or more than 3 feet in width. 2. Excavations for absorption trenches mu…

NAC 444.8356 Absorption trench system: Inspections. (NRS 439.200, 444.650) 1. If a residential system that is designed by a homeowner includes absorption trenches: (a) The homeowner shall contact the administrative authority for an inspection before covering the system; and (b) T…

NAC 444.8358 Absorption bed: General requirements. (NRS 439.200, 444.650) 1. If the use of an absorption trench is not practical, an absorption bed may be used as a viable alternative to the standard disposal trench. The bottom of the absorption bed, rather than the area of the s…

NAC 444.8361 Absorption bed: Design criteria. (NRS 439.200, 444.650) 1. The absorptive area of an absorption bed must be at least 50 percent larger than the calculated size that would be required for a standard absorption trench. 2. The percolation rate of the soils at the bottom…

NAC 444.8362 Absorption bed: Inspections. (NRS 439.200, 444.650) 1. The construction of an individual sewage disposal system that includes an absorption bed must be inspected and verified by an engineer or, if the system is designed by a homeowner as part of a residential system …

NAC 444.8364 Chamber system: General requirements. (NRS 439.200, 444.650) 1. A chamber system may be used in lieu of a standard absorption trench if the installation of an absorption trench is not practical. The bottom area of the chamber system, rather than the area of the sidew…

NAC 444.8366 Chamber system: Design criteria. (NRS 439.200, 444.650) 1. The health authority shall provide a sizing chart for each chamber system which it approves. The sizing chart must list the number of chamber units required for a specific size of septic tank and percolation …

NAC 444.8368 Chamber system: Inspections. (NRS 439.200, 444.650) 1. The construction of an individual sewage disposal system that uses a chamber system must be inspected and verified by an engineer or, if the unit is designed by a homeowner as part of a residential system for his…

NAC 444.837 System utilizing graywater for underground irrigation: General requirements. (NRS 439.200, 444.650) 1. Graywater may be used for underground irrigation if approved by the administrative authority. A homeowner must obtain a permit to construct, alter or install a syste…

NAC 444.8372 System utilizing graywater for underground irrigation: Application to construct, alter or install system; design criteria. (NRS 439.200, 444.650) 1. An application to construct, alter or install a system that uses graywater for underground irrigation must include: (a…

NAC 444.8374 Alternative absorption system: General requirements. (NRS 439.200, 444.650) 1. If an individual sewage disposal system that uses absorption trenches pursuant to NAC 444.8352, 444.8354 and 444.8356 cannot be used because of limiting conditions, including, without limi…

NAC 444.8376 Stepped network of trenches utilizing relief lines: General requirements. (NRS 439.200, 444.650) 1. On sloping terrain where a conventional individual sewage disposal system cannot be installed or is impractical, a stepped network of trenches utilizing relief lines b…

NAC 444.8378 Stepped network of trenches utilizing relief lines: Design criteria. (NRS 439.200, 444.650) 1. The size of the required absorption area for a stepped network of trenches utilizing relief lines must be calculated based on percolation testing and must conform to the re…

NAC 444.8381 Stepped network of trenches utilizing relief lines: Inspections. (NRS 439.200, 444.650) 1. An engineer shall: (a) Inspect each trench of a stepped network of trenches utilizing relief lines before the trench is covered; and (b) Verify that the elevation of each dispo…

NAC 444.8382 Capping fill trench: General requirements. (NRS 439.200, 444.650) 1. A capping fill trench may be used where conditions relating to high groundwater preclude the installation of a standard absorption trench. 2. A capping fill trench must be designed by an engineer. (…

NAC 444.8384 Capping fill trench: Design criteria. (NRS 439.200, 444.650) 1. The soil surrounding and beneath the bottom of a capping fill trench must have a percolation rate that is greater than 2 minutes per inch, but less than or equal to 120 minutes per inch. The required are…

NAC 444.8386 Capping fill trench: Inspections. (NRS 439.200, 444.650) 1. An engineer shall inspect the construction of a capping fill: (a) Upon the completion of the installation of the distribution lines in the absorption trenches. (b) When the fill area has been scarified. The …

NAC 444.8388 Elevated mound system: General requirements. (NRS 439.200, 444.650) 1. An elevated mound system consists of: (a) A suitable fill material; (b) An absorption area and distribution network; and (c) A soil cap. 2. With an elevated mound system: (a) The effluent must be …