Nevada Administrative Code

NAC 444.7772 “Water table” defined. (NRS 439.200, 444.650) “Water table” means the level in saturated soil at which the hydraulic pressure is zero. (Added to NAC by Bd. of Health by R129-98, eff. 3-25-99)

NAC 444.778 Purpose. (NRS 439.200, 444.650) 1. The purpose of NAC 444.750 to 444.8396, inclusive, is to protect the health of the individual family and the community and to prevent the occurrence of nuisances by safely disposing of all human and domestic wastes. 2. To accomplish …

NAC 444.780 Interpretation. (NRS 439.200, 444.650) If more than one interpretation exists for a provision of NAC 444.750 to 444.8396, inclusive, the more restrictive interpretation must be followed. [Bd. of Health, Indiv. Sewage Disposal Systems Reg. § 2.2, eff. 11-23-72]—(NAC A …

NAC 444.782 Severability. (NRS 439.200, 444.650) If any of the provisions of NAC 444.750 to 444.8396, inclusive, or any application thereof to any person, thing or circumstance is held invalid, it is intended that such invalidity not affect the remaining provisions, or their appl…

NAC 444.7825 Adoption by reference of certain publications; revision of certain publications after adoption. (NRS 439.200, 444.650) 1. The following provisions and publications are hereby adopted by reference: (a) Standards 40, 41 and 46 of NSF International, in the form most rec…

NAC 444.783 Approval of alternate methods of compliance. (NRS 439.200, 444.650) The health authority may grant an owner of an individual sewage disposal system approval for an alternate method of compliance with any provision of this chapter if the alternate method of compliance:…

NAC 444.784 Permits: Approval for new construction required; request for approval; nature and duration. (NRS 439.200, 444.650) 1. Approval must be obtained from the administrative authority to construct, alter or extend an individual sewage disposal system. This approval for new …

NAC 444.786 Permits: Denials; procedure for review of actions taken by health authority; appeals; validity and extension. (NRS 439.200, 444.650) 1. Except as otherwise provided in this subsection, an application for a permit for an individual sewage disposal system submitted to t…

NAC 444.788 Inspections. (NRS 439.200, 444.650) 1. Inspections may be required of the system materials and the trench before the trench is filled with aggregate or rock. Inspections by the administrative authority may be required before the sewer line, septic tank and soil absorp…

NAC 444.790 Lot size. (NRS 439.200, 444.650) 1. A minimum area of 1 acre (43,560 square feet), including public streets and alleys or other public rights-of-way, lands or any portion thereof abutting on, running through or within a building site, is required for the installation …

NAC 444.792 Location. (NRS 439.200, 444.650) 1. Except as otherwise provided in this section, an individual sewage disposal system must be located on the same lot as the building or structure that the system serves. The administrative authority may approve the use of a part of an…

NAC 444.794 Slope requirements. (NRS 439.200, 444.650) 1. For lots with slopes in excess of 20 percent, soil absorption trenches must, at the level of the distribution pipe, be a minimum of 20 feet horizontally from the face of the slope or ground surface as shown in subsection 4…

NAC 444.796 Performance of percolation test by property owner; verification of certain data by engineer. (NRS 439.200, 444.650) 1. Data from percolation tests from a minimum of two test holes in the area of the proposed soil absorption system is required. The property owner shall…

NAC 444.7962 Determination of appropriate percolation test procedure. (NRS 439.200, 444.650) In conducting a percolation test, the following flow chart must be used to determine which test procedure to follow: 1) Fill the percolation hole with water to a depth of at least 12 inch…

NAC 444.7964 Fast percolation test procedure. (NRS 439.200, 444.650) The following flow chart illustrates the fast percolation test procedure: 1) Fill the percolation hole with water to a level that is no more than 6 inches over the aggregate. 2) From a fixed reference point, det…

NAC 444.7966 Presoaking procedure for slow percolation test. (NRS 439.200, 444.650) The following flow chart illustrates the presoaking procedure for a slow percolation test: 1) Fill the percolation hole with clear water to a minimum depth of 12 inches over the aggregate. 2) Main…

NAC 444.7968 Slow percolation test procedure. (NRS 439.200, 444.650) The following flow chart illustrates the slow percolation test procedure: 1) Fill the percolation hole with water to a maximum depth of 6 inches over the aggregate. 2) From a fixed reference point, measure the d…

NAC 444.797 Sample form for percolation test. (NRS 439.200, 444.650) The following is a sample form for a percolation test: Hole #_____ Percolation Rate: ______ Minutes/Inch Depth From Native Ground Surface That Percolation Test Was Conducted: Presoak Start Time: Presoak End Time…

NAC 444.7972 Sample log for profile of soil. (NRS 439.200, 444.650) The following is a sample log for the profile of the soil: PROJECT TEST SPECIFICATIONS TECHNICIAN DATE DEPTH IN FEET DESCRIPTION OF SOIL TEST PIT INFORMATION REQUIRED: DEPTH TO WATER SEASONAL HIGH GROUNDWATER WAS…

NAC 444.798 Approved cleanout; building sewer. (NRS 439.200, 444.650) 1. An approved cleanout must be installed on the building sewer line. The cleanout must be located within 3 feet of the structure or, if the cleanout cannot be placed within 3 feet of the structure, as close as…

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…