CHAPTER 445A - WATER CONTROLS

NAC 445A.6694 Springs: Prerequisites to development; reports after development; approval for use. (NRS 445A.860) 1. Before commencing the construction of any improvements for the development of a spring as a source of water for a public water system, the supplier of water shall s…

NAC 445A.66945 Springs: Establishment of zone of protection. (NRS 445A.860) 1. If a spring is used as a source of water for a public water system, the supplier of water shall establish a zone of protection for the spring, as determined by technically defensible analyses of the sp…

NAC 445A.6695 Springs: Allowance of source of pollution or contamination within zone of protection. (NRS 445A.860) 1. Except as otherwise provided in subsection 2, no source of pollution or contamination is allowed within a zone of protection established pursuant to NAC 445A.6694…

NAC 445A.66955 Springs: Covering of device for collection of water. (NRS 445A.860) Except as otherwise justified by an engineer and approved by the Division or the appropriate district board of health, a device for the collection of water from a spring which is used as a source o…

NAC 445A.6696 Springs: Development. (NRS 445A.860) Except as otherwise justified by an engineer and approved by the Division or the appropriate district board of health, if a spring is used as a source of water for a public water system: 1. A diversionary channel must be construc…

NAC 445A.66965 Pumping facilities: General requirements. (NRS 445A.860) A supplier of water shall ensure that: 1. Each pumping facility of the public water system is designed and constructed in compliance with the provisions of NAC 445A.66965 to 445A.6706, inclusive. 2. The desig…

NAC 445A.6697 Pumping facilities: Location of pumping stations. (NRS 445A.860) Pumping stations must be located in such a manner that: 1. The hydraulic requirements of the public water system are met. 2. The pumping stations are protected from flood, fire and other hazards. (Adde…

NAC 445A.66975 Pumping facilities: Construction of sites for pumping stations. (NRS 445A.860) The site of the pumping station must be constructed in such a manner that: 1. The pumping station is readily accessible at all times. 2. The pumping station is protected from vandalism a…

NAC 445A.6698 Pumping facilities: Intakes. (NRS 445A.860) 1. A pumping station must, if it pumps surface water, use a type of intake that is appropriate for the type of pumping station. The intake must be protected in such a manner as to prevent any deterioration in the sanitary …

NAC 445A.66985 Pumping facilities: Housing of pumping stations. (NRS 445A.860) A pumping station must, whether it pumps raw water or finished water, comply with the following requirements: 1. The pumping station must be housed in a building that is weather-resistant and of durabl…

NAC 445A.6699 Pumping facilities: Suction wells and clear wells. (NRS 445A.860) 1. Each suction well or clear well must: (a) Be watertight. (b) Have a floor that is sloped in such a manner as to allow the removal of water and settled solids. (c) Be covered and otherwise protected…

NAC 445A.66995 Pumping facilities: Pumps. (NRS 445A.860) A supplier of water shall ensure that, with regard to the pumps used by the public water system: 1. Each pump is suitable for its intended purpose, has an adequate capacity for its intended purpose, is determined to be comp…

NAC 445A.67005 Pumping facilities: Priming. (NRS 445A.860) 1. Priming must be conducted in such a manner that: (a) The water used for priming is of no less a sanitary quality than that of the water being pumped. (b) There is a means to prevent backflow. (c) In installations where…

NAC 445A.6701 Pumping facilities: Booster pumps. (NRS 445A.860) Booster pumps must be located or controlled in such a manner that: 1. Except for pumping stations which draft from storage tanks, the intake pressure is at least 30 psi when the pump is in operation during peak hour …

NAC 445A.67015 Pumping facilities: Alarm system. (NRS 445A.860) If a pumping station has an automatic control, the station must have an alarm system that alerts the supervisor of the station or another person responsible for the operation of the station regarding any malfunction …

NAC 445A.6702 Pumping facilities: General requirements for piping system. (NRS 445A.860) The piping system of a public water system, including any piping used for suction, discharge, priming, seal water and the control of flow and pressure, must: 1. Be designed in such a manner a…

NAC 445A.67025 Pumping facilities: Suction piping. (NRS 445A.860) 1. Except as otherwise justified by an engineer and approved by the Division or the appropriate district board of health, a supplier of water shall ensure that, with regard to the suction piping of the public water…

NAC 445A.6703 Pumping facilities: Discharge piping. (NRS 445A.860) Except as otherwise justified by an engineer and approved by the Division or the appropriate district board of health, a supplier of water shall ensure that, with regard to the discharge piping of the public water…

NAC 445A.67035 Pumping facilities: Gauges and meters. (NRS 445A.860) 1. Except as otherwise provided in subsection 4, each pump must: (a) Have a permanent standard pressure gauge on its discharge line located upstream from any check valve. (b) Except for a vertical turbine pump, …

NAC 445A.6704 Pumping facilities: Seal water. (NRS 445A.860) 1. A supplier of water shall ensure that mechanical seals and packing receive clean seal water, from a volute or an external source, for cooling and flushing. The seal water must not be of a lesser sanitary quality than…

NAC 445A.67045 Pumping facilities: Controls. (NRS 445A.860) 1. The flow and pressure of a public water system must be controlled by the appropriate use of piping, valves and automatic control. 2. Pumps and their prime movers and appurtenances must be controlled in such a manner t…

NAC 445A.6705 Pumping facilities: Power. (NRS 445A.860) 1. The source of power for a pumping system must be electric, except that the Division or the appropriate district board of health may authorize the use of an alternative source of power where warranted. Alternative sources …

NAC 445A.67055 Pumping facilities: Heating, ventilation and lighting. (NRS 445A.860) 1. If any equipment of a pumping system is used during winter, the equipment must be adequately heated in a manner that ensures the safe and efficient operation of the components of the pumping s…

NAC 445A.6706 Pumping facilities: Hydropneumatic systems. (NRS 445A.860) 1. Hydropneumatic systems: (a) Must not be used in a public water system with 150 or more service connections. (b) Shall be deemed inadequate for protection from fire and the storage of water. 2. If a hydrop…

NAC 445A.67065 Storage structures: General requirements. (NRS 445A.860) 1. The materials and design of storage structures must provide stability and durability, and protect the quality of the stored water. 2. Before a product may be used to coat, seal, patch or otherwise become a…

NAC 445A.6707 Storage structures: Clear wells. (NRS 445A.860) 1. Clear wells must be sized in conjunction with any distribution storage in such a manner that the components of the public water system for the acquisition and treatment of water will not be required directly to foll…

NAC 445A.67075 Storage structures: Materials. (NRS 445A.860) 1. Except as otherwise provided in subsection 3, storage tanks must: (a) Consist of welded steel and comply with American Water Works Association Standard D100; (b) Consist of factory-coated, bolted steel and comply wit…

NAC 445A.6708 Storage structures: Design and construction. (NRS 445A.860) 1. Storage tanks must: (a) Be designed by an engineer, structurally competent and constructed of materials that are acceptable to the Division or the appropriate district board of health. (b) Employ a found…

NAC 445A.67085 Storage structures: Coatings; disinfection. (NRS 445A.860) 1. All metal surfaces of a storage structure must be properly protected by the application of paint or another coating. The coating used must not result in the transfer of any substance into the water which…

NAC 445A.6709 Storage structures: Security and safety. (NRS 445A.860) A supplier of water shall ensure that, with regard to storage structures: 1. Locks are installed on manholes and ladders, and such other precautions are taken, as are necessary to prevent trespassing, vandalism…

NAC 445A.67095 Storage structures: Drainage; protection from pollution and contamination. (NRS 445A.860) 1. Storage tanks must have sloped, watertight roofs and sidewalls, with no openings except properly constructed vents, manholes, overflows, drains, control ports and piping. T…

NAC 445A.67105 Distribution system: General requirements. (NRS 445A.860) A supplier of water shall ensure that the distribution system of the public water system: 1. Is adequate to deliver sufficient volumes of water, of the appropriate quality and pressure, to the area of servic…

NAC 445A.6711 Distribution system: Pressure. (NRS 445A.860) 1. A distribution system must be designed to maintain: (a) A minimum pressure of 20 psi at ground level for all service connections during all conditions of fire flow experienced during maximum day demand. (b) A normal w…

NAC 445A.67115 Distribution system: Design; diameter of water mains; connection to fire hydrant. (NRS 445A.860) 1. Before designing a water main for a public water system, an engineer shall perform a network hydraulic analysis on the public water system, based upon the requiremen…

NAC 445A.6712 Distribution system: Dead ends. (NRS 445A.860) 1. A distribution system must be designed, to the extent possible, in such a manner as to eliminate dead ends and form a grid system or system of arterial loops. Except as otherwise justified by an engineer and approved…

NAC 445A.67125 Distribution system: Materials. (NRS 445A.860) 1. Except as otherwise provided in subsections 2 and 3, the pipes, fittings, fixtures and valves of a distribution system, and any fire hydrants connected to a public water system, must: (a) For public water systems in…

NAC 445A.6713 Distribution system: Isolation valves. (NRS 445A.860) 1. Water mains must contain sufficient isolation valves to minimize any inconvenience to customers and sanitary hazards resulting from repairs. 2. Except as otherwise provided in subsection 3, isolation valves in…

NAC 445A.67135 Distribution system: Release and blowoff valves. (NRS 445A.860) 1. Air and vacuum valves, air release valves or hydrants must be installed at high points in water mains where air tends to accumulate. 2. Suitably sized blowoff valves must be provided in appropriate …

NAC 445A.6714 Distribution system: Chambers, vaults, pits and manholes. (NRS 445A.860) A chamber, vault, pit or manhole that contains any valves, including blowoff valves, or any meters or other appurtenances of a distribution system: 1. Must not be connected directly to any sani…

NAC 445A.67145 Distribution system: Construction. (NRS 445A.860) 1. Except as otherwise provided in this section, a water main must be installed: (a) For public water systems in Carson City, Fallon, Reno, Sparks, Yerington, Douglas County, Lander County, Lyon County, Nye County o…

NAC 445A.6715 Separation of lines: Definitions. (NRS 445A.860) As used in NAC 445A.6715 to 445A.6718, inclusive, unless the context otherwise requires: 1. “Sewer main”: (a) Includes any unidentified conduit with a minimum diameter of 6 inches. (b) Does not include: (1) A potable …

NAC 445A.67153 Separation of lines: Circumstances under which catch basin or manhole dimensions not required to be used in determining separation distances. (NRS 445A.860) If a gravity sewer line or gravity sewer main includes a catch basin or manhole which is designed or retrofi…

NAC 445A.67155 Separation of lines: Sewer main parallel to water main or water service lateral. (NRS 445A.860) 1. If a sewer main parallels a water main or water service lateral: (a) Whenever possible, the sewer main must be located lower than the water main or water service late…

NAC 445A.6716 Separation of lines: Sewer service lateral parallel to water main or water service lateral. (NRS 445A.860) 1. If a sewer service lateral parallels a water main or water service lateral, the sewer service lateral must be in a separate trench and: (a) Except as otherw…

NAC 445A.67165 Separation of lines: Sewer main crossing water main. (NRS 445A.860) 1. If a sewer main crosses a water main: (a) Except as otherwise provided in paragraph (b), the sewer main must be located at least 18 inches lower than the water main, as measured vertically from …

NAC 445A.6717 Separation of lines: Sewer main crossing water service lateral. (NRS 445A.860) 1. Except as otherwise provided in subsection 2, if a sewer main crosses a water service lateral, the sewer main must be located at least 18 inches lower than the water service lateral, a…

NAC 445A.67175 Separation of lines: Sewer service lateral crossing water main or water service lateral. (NRS 445A.860) 1. If a sewer service lateral crosses a water main or water service lateral, the sewer service lateral must be located: (a) At least 12 inches lower than the wat…