reglab/statecodes huggingface dataset:
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.65505 - Definitions

Current through June 11, 2024
As used in NAC 445A.65505 to
				  445A.6731, inclusive, and
				  sections 2, 3 and 4 of this regulation, unless the context otherwise requires,
				  the words and terms defined in NAC
				  445A.6551 to
				  445A.6661, inclusive, have the
				  meanings ascribed to them in those sections.
Added to NAC by Bd. of
				  Health, eff. 2-20-97; A by Environmental Comm'n by R194-08, 10-27-2009; A by
				  R049-18A,
				  eff. 8/21/2018
NRS
				  445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.6551 - "Absorption field" defined

Current through June 11, 2024
"Absorption field" means a component of a system for the
				  disposal of sewage from an individual source, which consists of an absorption
				  trench that uses the soil for the disposal and treatment of effluent from a
				  septic tank.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.65515 - "Acknowledgment of water service" defined

Current through June 11, 2024
"Acknowledgment of water service" means a document, written
				  under the letterhead of a supplier of water, pursuant to which the supplier
				  indicates to a person who is developing or proposes to develop property for
				  residential, commercial or industrial purposes that the supplier is agreeable
				  to supplying water to the developed property, but which does not indicate that
				  the supplier has assumed any legal obligation to supply that water.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.6552 - "Air and vacuum valve" defined

Current through June 11, 2024
"Air and vacuum valve" means a dual-function valve that
				  allows the entrance of air into a pipe or well which is being emptied, to
				  prevent a vacuum, and allows air to escape from a pipe or well which is being
				  filled or is under pressure.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.65525 - "Air binding" defined

Current through June 11, 2024
"Air binding" means a condition:
1. In which:
(a) A pump in suction head accumulates air
				after the initial priming of the pump, due to the release of gases contained in
				the water being pumped; and
(b) The
				air displaces the water in the pump and causes the pump to lose its prime;
				or
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.6553 - "Air gap" defined

Current through June 11, 2024
"Air gap" means a physical separation between a point of
				  free-flowing discharge from a pipe that supplies liquid to an open or
				  nonpressurized vessel and the overflow rim of that vessel which is:
1. At least twice the effective diameter of
				that pipe or, if the pipe is affected by side walls, at least three times the
				effective diameter of that pipe; and
2. In no case less than 1 inch.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.65535 - "Air release valve" defined

Current through June 11, 2024
"Air release valve" means a valve that is placed at a high
				  point of a pipeline for the automatic release of air to prevent air binding and
				  the buildup of pressure.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.6554 - "Alternative pumping capacity" defined

Current through June 11, 2024
"Alternative pumping capacity" means a source of water,
				  including a well, or a facility for pumping from a source of water,
				  which:
1. Can provide a public water
				system with regular or emergency supplies of water in areas that do not have an
				adequate storage of water that is accessible by gravity; and
2. Is equipped with an independent, reliable
				supply of power that is available during periods when the normal supply of
				power fails, which:
(a) Consists of:
(1) An emergency generator; or
(2) A standby prime mover that operates by
				internal combustion; or
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.65545 - "Altitude control valve" defined

Current through June 11, 2024
"Altitude control valve" means a valve that
				  automatically:
1. Shuts off the flow
				of water when the water level in a storage structure reaches a predetermined
				elevation; and
2. Opens when the
				water level in the storage structure lowers to a predetermined
				elevation.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.6555 - "Annular space" defined

Current through June 11, 2024
"Annular space" means the area between two cylindrical
				  objects, one of which surrounds the other, including the space between the
				  respective walls of the drill hole and casing of a well.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.65555 - "Approved backflow testing laboratory" defined

Current through June 11, 2024
"Approved backflow testing laboratory" means:
1. The Foundation for Cross-Connection
				Control and Hydraulic Research of the University of Southern California;
				or
2. Any other person or entity
				who the Division or the appropriate district board of health determines:
(a) Is competent and possesses the necessary
				facilities to investigate and evaluate assemblies for the prevention of
				backflow;
(b) Adheres to the
				procedures for testing and certification set forth in the
American
				Water Works Association Standards
, as adopted by reference in NAC
				445A.6663; and
(c) Is independent
				of any manufacturers of assemblies for the prevention of backflow.
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.6556 - "Approved check valve" defined

Current through June 11, 2024
"Approved check valve" means a check valve:
1. Which does not drip in the normal
				direction of flow when the inlet pressure is 1 psi or more and there is no
				outlet pressure.
2. Which allows no
				leakage in the direction opposite the normal direction of flow.
3. In which the closure element is internally
				loaded in such a manner as to promote rapid and positive closure.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.65565 - "Appurtenances" defined

Current through June 11, 2024
"Appurtenances" means any machinery, equipment, appliances or
				  auxiliary structures attached to a main structure which enable the main
				  structure to function but are not an integral part of the main
				  structure.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.6557 - "Aquifer" defined

Current through June 11, 2024
"Aquifer" means a geologic formation, group of geologic
				  formations or part of a geologic formation that is capable of yielding
				  groundwater to a well or spring.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.65575 - "Atmospheric vacuum breaker" defined

Current through June 11, 2024
"Atmospheric vacuum breaker" means a vacuum breaker that
				  contains an air inlet valve, a check seat and one or more air inlet ports, in
				  which:
1. The flow of water causes the
				air inlet valve to close the air inlet ports; and
2. When the flow of water stops:
(a) The air inlet valve falls and forms a
				check valve against backsiphonage; and
(b) The air inlet ports open to allow air to
				enter and satisfy the vacuum.
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.6558 - "Automatic control" defined

Current through June 11, 2024
"Automatic control" means a system for the control of
				  equipment entirely by computer or other electrical or mechanical means without
				  human intervention under normal conditions.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.65585 - "Auxiliary supply of water" defined

Current through June 11, 2024
"Auxiliary supply of water" means a supply of water or system
				  for the supply of water which is available to the premises of a customer of a
				  public water system, other than the supply or system of the public water system
				  established to provide water to the premises, including another public water
				  system or any natural source of water.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.6559 - "Average day demand" defined

Current through June 11, 2024
"Average day demand" means the average daily demand for water
				  over a yearly period, as determined by historical data.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.65595 - "Backfill" defined

Current through June 11, 2024
"Backfill" means the material used to refill an excavation
				  into which a pipeline or other structure has been placed.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.65605 - "Backflow" defined

Current through June 11, 2024
"Backflow" means a hydraulic condition in which a relative
				  difference in pressures causes a nonpotable liquid, gas or other substance to
				  flow into a potable water system.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.6561 - "Backpressure" defined

Current through June 11, 2024
"Backpressure" means an elevation in the downstream pressure
				  of a piping system above the supply pressure which:
1. Is caused by pumping, air pressure, steam
				or the elevation of piping; and
2.
				Could cause a reversal in the normal direction of flow at a particular
				point.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.65615 - "Backsiphonage" defined

Current through June 11, 2024
"Backsiphonage" means a backflow that results when a
				  reduction in the pressure of a water system causes a subatmospheric pressure to
				  exist at a particular site in the water system.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.6562 - "Backwashing" defined

Current through June 11, 2024
"Backwashing" means the reversal of flow through a filter to
				  wash clogging material out of the filtering medium and reduce conditions that
				  cause head loss.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.65625 - "Baffles" defined

Current through June 11, 2024
"Baffles" means deflective valves, guides, grids or gratings,
				  or similar devices, which are constructed or placed in flowing water to check
				  or effect a more uniform distribution of velocities, to absorb energy, to
				  divert, guide or agitate liquids and to check eddies.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.6563 - "Bag of cement" defined

Current through June 11, 2024
"Bag of cement" means 1 cubic foot or 94 pounds of
				  cement.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.65635 - "Ball valve" defined

Current through June 11, 2024
"Ball valve" means a valve that consists of a ball resting in
				  a cylindrical seat, regarding which:
1. A hole is bored through the ball to allow
				the flow of water when the valve is open; and
2. The valve closes when the ball is rotated
				90 degrees.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.6564 - "Bell-shaped" defined

Current through June 11, 2024
"Bell-shaped" means having an expanding rounded
				  entrance.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.65645 - "Best available technology" defined

Current through June 11, 2024
"Best available technology" means the best technology,
				  technique or procedure that the EPA finds to be available after an examination
				  of the efficacy of the technology, technique or procedure under conditions both
				  in the laboratory and in the field.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.6565 - "Blowoff valve" defined

Current through June 11, 2024
"Blowoff valve" means a valve installed at a low point,
				  depression or end of a pipeline to allow drainage of the pipeline.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.65655 - "Booster pump" defined

Current through June 11, 2024
"Booster pump" means a pump installed on a distribution main
				  to raise the pressure of the water on the discharge side of the pump.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.6566 - "Butterfly valve" defined

Current through June 11, 2024
"Butterfly valve" means a valve in which a disc rotates in
				  such a manner on a shaft that as it opens and closes, the valve is fully open
				  when the disc is parallel to the axis of the pipe.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.65665 - "Capacity for the development and treatment of water" defined

Current through June 11, 2024
"Capacity for the development and treatment of water" means
				  the facilities and appurtenances of a public water system that provide finished
				  water, treated if necessary, to the distribution system.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.6567 - "Casing" defined

Current through June 11, 2024
"Casing" means:
1.
				The conduit required to prevent waste and contamination of groundwater and to
				hold the formation open during the construction or use of a well; or
2. The enclosure surrounding an impeller,
				into which the suction and discharge ports are machined.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.65675 - "Cement grout" defined

Current through June 11, 2024
"Cement grout" means a mixture of portland cement, sand and
				  water which contains at least seven bags of cement per cubic yard and not more
				  than 7 gallons of clean water for each bag of cement.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.6568 - "Cement slurry" defined

Current through June 11, 2024
"Cement slurry" means a mixture of cement and sand, without
				  aggregate, that:
1. Has a cured
				compressive strength of 300 psi;
2.
				Can be excavated with minimal difficulty; and
3. Can provide a uniform support for pipes
				and backfill in a trench.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.65685 - "Centrifugal pump" defined

Current through June 11, 2024
"Centrifugal pump" means a pump that consists of an impeller
				  which:
1. Is fixed on a rotating shaft
				and enclosed in a casing that includes an inlet and a connection for discharge;
				and
2. When rotating, creates
				pressure in the liquid through velocity derived from centrifugal
				force.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.6569 - "Certified backflow prevention assembly tester" defined

Current through June 11, 2024
"Certified backflow prevention assembly tester" means a
				  person who is certified to test assemblies for the prevention of backflow by
				  the California/Nevada section of the American Water Works Association, the
				  American Backflow Prevention Association or an equivalent organization approved
				  by the Division.
Added to NAC by Bd. of
				  Health, eff. 2-20-97; A by Environmental Comm'n by R061-10,
				  7-22-2010
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.65695 - "Check valve" defined

Current through June 11, 2024
"Check valve" means a valve designed to open in the direction
				  of normal flow and close with the reversal of normal flow.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.65705 - "Chloramines" defined

Current through June 11, 2024
"Chloramines" means compounds of organic and inorganic
				  nitrogen and chlorine.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.6571 - "Chlorination" defined

Current through June 11, 2024
"Chlorination" means the process of adding chlorine to water
				  to:
1. Kill or inactivate organisms
				that cause disease; or
2. Act as an
				oxidizing agent.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.65715 - "Chlorinator" defined

Current through June 11, 2024
"Chlorinator" means a device used to add chlorine, or a
				  compound that contains chlorine, to water.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.6572 - "Chlorine residual" defined

Current through June 11, 2024
"Chlorine residual" means the amount of chlorine remaining in
				  water after the reaction of the chlorine with organic and inorganic substances
				  in the water which, depending upon the pH of the water, is in the form of
				  hypochlorous acid or hypochlorite ions.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.65725 - "Class 1 fire sprinkler system" defined

Current through June 11, 2024
"Class 1 fire sprinkler system" means a fire sprinkler system
				  that:
1. Has a direct connection to a
				water main and no physical connection to any source of pollution or
				contamination;
2. Uses no pumps,
				tanks or reservoirs; and
3. Uses no
				antifreeze or other additives of any kind.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.6573 - "Class 2 fire sprinkler system" defined

Current through June 11, 2024
"Class 2 fire sprinkler system" means a fire sprinkler system
				  that:
1. Has a direct connection to a
				water main and no physical connection to any source of pollution or
				contamination;
2. Has a booster
				pump installed at the connection to the water main;
3. Uses no tanks or reservoirs; and
4. Uses no antifreeze or other additives of
				any kind.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.65735 - "Class 3 fire sprinkler system" defined

Current through June 11, 2024
"Class 3 fire sprinkler system" means a fire sprinkler system
				  that:
1. Has a direct connection to a
				water main;
2. Uses no antifreeze
				or other additives of any kind; and
3. Uses one or more of the following:
(a) An elevated tank for the storage of
				water.
(b) A pump that takes
				suction from a tank or covered reservoir located above ground.
(c) A pressure tank.
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.6574 - "Class 4 fire sprinkler system" defined

Current through June 11, 2024
"Class 4 fire sprinkler system" means a fire sprinkler system
				  that:
1. Has a direct connection to a
				water main;
2. Has available an
				auxiliary supply of water which is located on the premises or within 1,700 feet
				of a pumping connection for the system; and
3. Uses no antifreeze or other additives of
				any kind.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.65745 - "Class 5 fire sprinkler system" defined

Current through June 11, 2024
"Class 5 fire sprinkler system" means a fire sprinkler system
				  that has a direct connection to a water main and:
1. An interconnection with an auxiliary
				supply of water, including, without limitation:
(a) A prohibited water well;
(b) A water system used for industrial
				purposes; or
(c) A pump that takes
				suction from a river, pond or reservoir; or
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.6575 - "Class 6 fire sprinkler system" defined

Current through June 11, 2024
"Class 6 fire sprinkler system" means a fire sprinkler system
				  that:
1. Is combined with a water
				system used for industrial purposes; and
2. Has a direct connection to a water main
				and no physical connection to any other supplies of water, except that the
				system may have gravity storage or a pump that takes suction from a
				tank.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.65755 - "Clear well" defined

Current through June 11, 2024
"Clear well" means a structure, vault or chamber used for the
				  storage of finished water.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.6576 - "Coating" defined

Current through June 11, 2024
"Coating" means a material applied to the inside or outside
				  of a pipe, valve, fixture, tank or other structure, primarily for protection
				  from corrosion.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.65765 - "Coliform bacteria" defined

Current through June 11, 2024
"Coliform bacteria" means a group of bacteria that inhabits
				  the intestines of humans and animals, and is occasionally found in other
				  habitats, including:
1. All aerobic
				and facultative anaerobic, Gram-negative bacilli that do not form spores and
				which cause the production of gas through the fermentation of lactose;
				and
2. All bacteria that produce a
				dark purplish-green colony with a metallic sheen when the membrane-filter
				technique is used for the identification of coliform.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.65767 - "Commission" defined

Current through June 11, 2024
"Commission" has the meaning ascribed to it in NRS
				  NRS
				  445A.8075.
Added to NAC by
				  Environmental Comm'n by R194-08, eff. 10-27-2009
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.6577 - "Commitment for water service" defined

Current through June 11, 2024
"Commitment for water service" means a document pursuant to
				  which a supplier of water acknowledges that it has assumed a legal obligation
				  to supply water to property under development or proposed to be developed for
				  residential, commercial or industrial purposes. The document may indicate that
				  the obligation is subject to certain conditions precedent, including, without
				  limitation, the payment of fees, the dedication of water rights or the
				  construction and dedication of infrastructure.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.65775 - "Concentric reducer" defined

Current through June 11, 2024
"Concentric reducer" means a reducer used to connect a larger
				  pipe to a smaller pipe in such a manner as to align the center lines of both
				  pipes.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.6578 - "Concrete grout" defined

Current through June 11, 2024
"Concrete grout" means a mixture of portland cement, sand,
				  1/4-inch minus aggregate and water which contains at least five bags of cement
				  per cubic yard of concrete and not more than 7 gallons of clean water for each
				  bag of cement.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.65785 - "Conductor casing" defined

Current through June 11, 2024
"Conductor casing" means the temporary or permanent casing
				  used in the upper portion of a drill hole to prevent collapse of the formation
				  during the construction of a well or to conduct the gravel pack to perforated
				  or screened areas in the casing.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.6579 - "Constant discharge aquifer test" defined

Current through June 11, 2024
"Constant discharge aquifer test" means a scientific
				  evaluation of the characteristics of performance of a well and the hydraulic
				  parameters of the aquifer by pumping the well at a specific rate for a
				  significant period while documenting drawdown.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.65795 - "Contamination" defined

Current through June 11, 2024
"Contamination" means an impairment of water quality by
				  chemical substances or biological organisms which the Division or the
				  appropriate district board of health determines to be sufficient to create a
				  risk or threat to the public health.
Added to NAC by Bd. of
				  Health, eff. 2-20-97; A by Environmental Comm'n by R194-08,
				  10-27-2009
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.65805 - "Corporation stop" defined

Current through June 11, 2024
"Corporation stop" means a valve, which cannot be operated
				  from the surface, for joining a service line to a water main.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.6581 - "Cross-connection" defined

Current through June 11, 2024
"Cross-connection" means an unprotected connection or
				  structural arrangement, whether actual or potential, between a public water
				  system and any other source or system, through which it is possible to
				  introduce into any part of the public water system any used water, industrial
				  fluid, gas or substance other than the potable water intended to supply the
				  system. The term includes any bypass arrangements, jumper connections,
				  removable sections, swivel or change-over devices or other temporary or
				  permanent devices through which or because of which backflow can occur.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.65815 - "Curb stop" defined

Current through June 11, 2024
"Curb stop" means a valve that is attached to a service line
				  and can be operated by a valve key to start or stop the flow of water.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.6582 - "Dead end" defined

Current through June 11, 2024
"Dead end" means the end of a water main which is not
				  connected to other parts of the distribution system by means of a connecting
				  loop.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.65825 - "Determined to be compatible with drinking water" defined

Current through June 11, 2024
Determined to be compatible with drinking water" means that a
				  product is determined to be compatible with drinking water through:
1. Certification of the product in accordance
				with Standard 14, 42, 44, 53, 55, 58, 60 , 61 or 372, as appropriate, as
				adopted by reference in NAC 445A.6663; or
2. Certification of the product by an
				independent laboratory approved by the Division or the appropriate district
				board of health.
Added to
				  NAC by Bd. of Health, eff. 2-20-97; A by Environmental Comm'n by R194-08,
				  10-27-2009; A by
				  R118-14,
				  eff. 12/22/2014
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.6583 - "Disinfection" defined

Current through June 11, 2024
"Disinfection" means:
1. The introduction of chlorine or another
				chemical oxidant, or of another agent approved by the Division or the
				appropriate district board of health, in such a concentration and for such a
				period of contact as is sufficient to kill or inactivate pathogenic or
				indicator microbiological organisms; or
2. The performance of another process
				approved by the Division or the appropriate district board of health in such a
				manner as to kill or inactivate pathogenic or indicator microbiological
				organisms.
Added to NAC by Bd. of
				  Health, eff. 2-20-97; A by Environmental Comm'n by R194-08,
				  10-27-2009
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.65835 - "Distribution main" defined

Current through June 11, 2024
"Distribution main" means any pipe in a distribution system
				  other than a service line.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.6584 - "Distribution storage" defined

Current through June 11, 2024
"Distribution storage" means the storage structures connected
				  to a distribution system.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.65845 - "Distribution system" defined

Current through June 11, 2024
"Distribution system" means all the facilities of a public
				  water system used to deliver finished water to service connections from the
				  source of the water or from any related treatment or storage
				  facilities.
Added to NAC by Bd. of
				  Health, eff. 2-20-97; A by
				  R049-18A,
				  eff. 8/21/2018
NRS
				  445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.65847 - "District board of health" defined

Current through June 11, 2024
"District board of health" has the meaning ascribed to it in
				  NRS
				  NRS
				  445A.812.
Added to NAC by
				  Environmental Comm'n by R194-08, eff. 10-27-2009
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.6585 - "Division of Environmental Protection" and "Division" defined

Current through June 11, 2024
"Division of Environmental Protection" and "Division" mean
				  the Division of Environmental Protection of the State Department of
				  Conservation and Natural Resources.
Added to NAC by Bd. of
				  Health, eff. 2-20-97; A by Environmental Comm'n by R194-08,
				  10-27-2009
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.65853 - "Division of Public and Behavioral Health" defined

Current through June 11, 2024
"Division of Public and Behavioral Health" means the Division
				  of Public and Behavioral Health of the Department of Health and Human
				  Services.
Added to NAC by Bd. of
				  Health, eff. 2-20-97-Substituted in revision for NAC
				  445A.6606
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.65855 - "Double check detector check assembly" defined

Current through June 11, 2024
"Double check detector check assembly" means an assembly
				  composed of a line-sized double check valve assembly and a bypass that contains
				  a water meter and another double check valve assembly.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.6586 - "Double check valve assembly" defined

Current through June 11, 2024
"Double check valve assembly" means an assembly that:
1. Is composed of two independently acting,
				approved check valves;
2. Has
				tightly closing, resilient seated shutoff valves attached at each
				end;
3. Is fitted with properly
				located, resilient seated test cocks; and
4. Has been tested and approved, in
				accordance with
American Water Works Association Standard
				C510
, by an approved backflow testing laboratory.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.65865 - "Drive point water well" defined

Current through June 11, 2024
"Drive point water well" means a water well constructed by
				  driving a drive point attached to the end of a section of pipe into the
				  ground.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.6587 - "Dug water well" defined

Current through June 11, 2024
"Dug water well" means a water well for which the excavation
				  is done by using picks, shovels or spades, a backhoe, a clamshell bucket or
				  sand bucket, or similar equipment.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.65875 - "Eccentric reducer" defined

Current through June 11, 2024
"Eccentric reducer" means a reducer used to connect a larger
				  pipe to a smaller pipe in such a manner that one edge of both pipes is
				  aligned.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.6588 - "Emergency" defined

Current through June 11, 2024
"Emergency" means a situation in which an unusual calamity,
				  including a flood, fire, storm, earthquake, drought, civil disturbance,
				  accidental spill of a hazardous material or similar occurrence, disrupts the
				  provision of water by a public water system or endangers the quality of water
				  provided by a public water system.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.65885 - "Emergency reserve" defined

Current through June 11, 2024
"Emergency reserve" means finished water that is held in
				  storage and reserved for use in an emergency, including a break in a supply
				  line or a failure of a pumping station.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.6589 - "Engineer" defined

Current through June 11, 2024
"Engineer" means a professional engineer who is registered as
				  such in this State within an appropriate discipline.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.65895 - "Enteric virus" defined

Current through June 11, 2024
"Enteric virus" means a submicroscopic infective agent that
				  grows and multiplies only in living cells, is associated with feces and can
				  infect humans through transmission by water.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.6591 - "Existing public water system" defined

Current through June 11, 2024
"Existing public water system" means a public water system
				  that has operated for 5 or more years.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.65915 - "Filtration" defined

Current through June 11, 2024
"Filtration" means a process for removing particulate matter
				  from water by passing the water through porous media.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.6592 - "Final map" defined

Current through June 11, 2024
"Final map" has the meaning ascribed to it in NRS
				  NRS
				  278.0145.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.65925 - "Finished water" defined

Current through June 11, 2024
"Finished water" means water that has been treated or
				  otherwise developed in a manner that complies with NAC 445A.450 to 445A.540,
				  inclusive, and 445A.65505 to 445A.6731, inclusive.
Added to NAC by Bd. of
				  Health, eff. 2-20-97; A by Environmental Comm'n by R194-08,
				  10-27-2009
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.6593 - "Fire authority" defined

Current through June 11, 2024
"Fire authority" means:
1. The county, city, town, special district
				or agency responsible for fire protection in the area of service of a public
				water system; or
2. The Office of
				the State Fire Marshal Division of the Department of Public Safety.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.65935 - "Fire demand" defined

Current through June 11, 2024
"Fire demand" means the total quantity of water required for
				  protection from fire, as determined by the fire authority and expressed in
				  gallons per minute for a specified number of hours.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.6594 - "Fire flow" defined

Current through June 11, 2024
"Fire flow" means the rate of the flow of water, as
				  determined by the fire authority and expressed in gallons per minute,
				  which:
1. Is required for protection
				from fire; and
2. Can be delivered
				from a distribution system at a residual pressure of 20 psi at a fire
				hydrant.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.65945 - "Fire sprinkler system" defined

Current through June 11, 2024
"Fire sprinkler system" means a system of piping which is
				  connected to a public water system and has sprinklers that automatically
				  discharge water over the area of a fire.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.6595 - "Flapper valve" defined

Current through June 11, 2024
"Flapper valve" means a formed or machined covering for the
				  opening at the end of a pipeline that:
1. Is suspended from the top of the pipe;
				and
2. Opens and closes by rotating
				about a hinge in a manner that allows the valve to close under the influence of
				gravity.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.65955 - "Flexible coupling" defined

Current through June 11, 2024
"Flexible coupling" means a joint between two pipes that
				  allows one of the pipes to be deflected without disturbing the other
				  pipe.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.6596 - "Flocculation" defined

Current through June 11, 2024
"Flocculation" means a process to enhance agglomeration or
				  the collection of smaller floc particles into larger particles that are more
				  settleable or filterable using gentle stirring by hydraulic or mechanical
				  means.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.65965 - "Flow detector" defined

Current through June 11, 2024
"Flow detector" means a device inserted through a coupling
				  placed on the line into the suction side of a pump to shut down the pump when
				  flow is lost, in which a metal reed extends into the flow and the flow causes
				  the reed to flex and keep the electrical contacts for the pump closed.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.6597 - "Flow proportional control" defined

Current through June 11, 2024
"Flow proportional control" means an automatic method of
				  chlorination or similar disinfection pursuant to which the rate for the feeding
				  of disinfectant is increased or decreased as the rate of the flow of water
				  increases or decreases.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860