reglab/statecodes huggingface dataset:
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.66835 - Use of gaseous chlorine: Training of personnel; compliance with requirements for safety; ensuring continuous disinfection

Current through June 11, 2024
If gaseous chlorine is used for the disinfection of
				  water:
1. The facilities that use
				gaseous chlorine must employ personnel who are trained in the safe handling of
				gaseous chlorine and in the operation and maintenance of the appropriate
				equipment for chlorination.
2. The
				supplier of water shall contact the fire authority to ensure compliance with
				any applicable requirements for safety. If there is any conflict between the
				requirements of the fire authority and the requirements of NAC 445A.6683 to
				445A.66845, inclusive, the more stringent of those requirements
				applies.
3. An automatic system for
				switching between cylinders of gaseous chlorine must be provided where
				necessary to ensure continuous disinfection.
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.6684 - Use of gaseous chlorine: Location, storage and maintenance of equipment

Current through June 11, 2024
1. Except as
				otherwise justified by an engineer and approved by the Division or the
				appropriate district board of health, gaseous chlorine or equipment for the use
				of gaseous chlorine must not be located in a building where there are any
				living quarters.
2. Cylinders of
				gaseous chlorine:
(a) Must not be stored in
				areas where they are exposed to direct sunlight or are readily accessible to
				unauthorized persons.
(b) Must be
				isolated from the operating areas of a public water system and anchored or
				otherwise restrained, through the use of a chain or other device, to prevent
				their falling over. A valve stem wrench or valve handle must be maintained on
				each cylinder so that the supply of gaseous chlorine can be shut off quickly in
				the case of an emergency. The valve protection hood must be kept in place
				except when a cylinder is in operation.
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.66845 - Use of gaseous chlorine: Chlorine room

Current through June 11, 2024
In a facility of a public water system where gaseous chlorine
				  is used for the disinfection of water:
1. The chlorinator, the cylinders of gaseous
				chlorine and a scale or other device suitable for determining the amount of
				gaseous chlorine contained in each cylinder must be kept above grade in a
				separate, reasonably gastight and corrosion-resistant room where:
(a) No ammonia is stored; and
(b) Any openings to the remainder of the
				facility are sealed.
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.6685 - Use of sodium hypochlorite

Current through June 11, 2024
If sodium hypochlorite is used for the disinfection of water,
				  the supplier of water shall:
1. Take
				appropriate actions to prevent the natural decomposition of the sodium
				hypochlorite, including:
(a) Obtaining fresh
				sodium hypochlorite.
(b) Using the
				sodium hypochlorite as soon as practicable after it is manufactured. Containers
				of sodium hypochlorite must indicate the date when the sodium hypochlorite was
				manufactured.
(c) Shielding tanks
				for the storage of sodium hypochlorite from sunlight.
(d) Storing the sodium hypochlorite at a low
				temperature.
(e) Maintaining a pH
				between 12 and 13 when diluting the sodium hypochlorite for storage.
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.66855 - Water wells: General requirements

Current through June 11, 2024
If a water well is used as a source of water for a public
				  water system, the water well must comply with:
1. The provisions of NAC 445A.66855 to
				445A.6693, inclusive;
2. All of the
				provisions of
American Water Works Association Standard A100
that do not conflict with any of the provisions described in subsection 1;
				and
3. All of the provisions of
				chapter 534 of NAC that do not conflict with any of the provisions described in
				subsections 1 and 2.
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.6686 - Water wells: Establishment of redundant capacity for development and treatment of water

Current through June 11, 2024
The Division or the appropriate district board of health may
				  require a supplier of water to establish a redundant capacity for the
				  development and treatment of water if:
1. A water well is the sole source of water
				for the public water system; and
2.
				Based upon the remoteness of the facilities, availability of spare parts,
				access to equipment and other factors in a particular case, the Division or the
				appropriate district board of health determines that the redundancy is
				desirable to protect the public health and ensure the availability of safe and
				reliable drinking water.
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.66865 - Water wells: Location

Current through June 11, 2024
1. Before designing
				and carrying out a proposal for the location of a water well, a supplier of
				water shall:
(a) Submit to the Division or the
				appropriate district board of health information on any flood zone that
				includes the proposed location; and
(b) In consultation with the Division or the
				appropriate district board of health, identify all potential sources for the
				pollution or contamination of groundwater at the proposed location.
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.6687 - Water wells: Prohibited types

Current through June 11, 2024
A supplier of water shall not use a drive point water well, a
				  dug water well or a jetted water well as a source of water for the 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.66875 - Water wells: Documentation of right to divert water

Current through June 11, 2024
Before a public water system uses a water well as a source of
				  water, the supplier of water shall submit to the Division or the appropriate
				  district board of health documentation indicating that the supplier of water
				  has a legal right to divert water from the well for municipal, quasi-municipal
				  or domestic purposes.
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.6688 - Water wells: Determination and reporting of yield characteristics of well

Current through June 11, 2024
After the construction of a water well and before the
				  attachment of a permanent pump to the well, the supplier of water shall:
1. Cause a step drawdown test and a constant
				discharge aquifer test, or another engineering investigation or analysis
				suitable for determining the characteristics of the well for the production of
				water, to be performed on the well and submit the results of the tests,
				investigation or analysis to the Division or the appropriate district board of
				health. The supplier of water shall coordinate its activities with the Bureau
				of Water Pollution Control of the Division to ensure that any discharge of
				water resulting from the tests, investigation or analysis will not violate any
				standards for water quality.
2.
				Determine the well yield for the well and submit that information to 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
NRS
					 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.66885 - Water wells: Prerequisites to use after construction, modification or reconditioning

Current through June 11, 2024
1. After the
				construction of a water well is completed and before any water from the well is
				allowed to enter a public water system, the supplier of water shall:
(a) Submit to the Division or the appropriate
				district board of health a copy of a chemical analysis conducted by a properly
				certified laboratory which indicates that the water complies with the
				provisions of NAC 445A.450 to 445A.492, inclusive; and
(b) If the supplier of water proposes to
				blend, dilute or otherwise treat the water to attain compliance with any of
				those provisions:
(1) Submit to the Division
				or the appropriate district board of health a complete description of the
				proposal, as prepared by an engineer; and
(2) Obtain the approval of the proposal by
				the Division or the appropriate district board of health.
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.6689 - Water wells: Casing

Current through June 11, 2024
1. Except as
				otherwise provided in subsection 2, a water well must be cased to the bottom of
				the drill hole and constructed in such a manner as to prevent any pollution or
				contamination of the groundwater.
2. If no additional water is developed in the
				bottom portion of a water well, neat cement, cement grout or concrete grout may
				be placed by tremie pipe from the total depth to the bottom of the
				casing.
3. The casing must:
(a) Be composed of:
(1) A quality of steel that complies with
American Water Works Association Standard
A100; or
(2) Where authorized by the Division of Water
				Resources of the State Department of Conservation and Natural Resources, a
				quality of PVC that complies with
American Water Works Association
				Standard
A100.
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.66895 - Water wells: Prevention of pollution and contamination

Current through June 11, 2024
1. Drilling fluids and additives must not
				impart any substances into the water which will cause or promote any pollution
				or contamination.
2. If inferior
				quality water is encountered at any time during the construction of a water
				well, the aquifers containing that water must be adequately cased or sealed off
				in such a manner that the water cannot enter the well or move either up or down
				the annular space outside the casing of the well. If necessary to prevent the
				movement of that water, appropriate packers or seals must be
				installed.
3. If a gravel-packed
				well encounters inferior quality water, the aquifers containing that water must
				be sealed off by pressure grouting, or with appropriate packers or seals, in
				such a manner as to prevent that water from moving vertically in the
				gravel-packed portions of the well.
4. As used in this section, "inferior quality
				water" means any mineralized water or water known to be polluted or
				contaminated.
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.66905 - Water wells: Seals and coatings

Current through June 11, 2024
1. Except as
				otherwise provided in subsection 4 and NAC 445A.6691, a water well must have a
				sanitary seal consisting of neat cement, cement grout or concrete grout from a
				depth of not less than 50 feet below the surface to ground level, constructing
				the sanitary seal from bottom to top. If grout is used, contact must be ensured
				between the grout and the native formation. The sanitary seal must have a
				minimum thickness of 2 inches in the annular space of the well. The casing must
				be centered as nearly as practicable in the drill hole in such a manner as to
				allow the sanitary seal fully to surround the casing. Dry cement must not be
				placed in the annular space for use as a sanitary seal.
2. Before any product may be used to coat,
				seal, patch or otherwise become attached to the surface of any material used to
				construct a water well in such a manner that the product will come into contact
				with drinking water, the product must be determined to be compatible with
				drinking water.
3. If a permanent
				conductor casing is used in a water well, a watertight seal, consisting of
				concrete or a welded plate, must be placed at the surface level between the
				conductor casing and the production casing in such a manner as to prevent any
				pollutants or contaminants from entering the area of gravel pack.
4. If a pitless adapter is used in the
				construction of a water well:
(a) The sanitary
				seal must begin not more than 5 feet below the ground, be continuous and extend
				at least 50 feet; and
(b) The
				exterior portion of the casing above the sanitary seal must be refilled to
				ground level with native material.
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.6691 - Water wells: Construction near certain other sources of water

Current through June 11, 2024
If a water well is drilled within 1/4 mile of a perennial
				  stream, river, lake, unlined reservoir or unlined canal:
1. There must be no perforations in the
				production casing from ground level to a depth of 100 feet.
2. The well must have a sanitary seal to a
				depth of 100 feet.
3. A permanent
				conductor casing may be used to convey the gravel pack to the 100-foot
				level.
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.66915 - Water wells: Slabs and pedestals; construction with lineshaft turbine pump or submersible pump

Current through June 11, 2024
1. A water well
				with an above-ground discharge must be protected by a concrete slab and, if the
				well is equipped with a lineshaft turbine pump, with a concrete pedestal, both
				of which are constructed of continuously poured concrete. The pedestal must be
				of a sufficient diameter to extend at least 3 inches beyond the outer periphery
				of the sanitary seal. The slab must:
(a) Be
				placed above the finished grade;
(b) Have a minimum thickness of 6
				inches;
(c) Slope away from the
				pedestal at a minimum slope of 2 percent;
(d) Extend a minimum of 4 feet from the
				casing of the well in all directions; and
(e) Be free from cracks and other defects
				likely to detract from its capability to remain watertight.
The casing of the well must extend to a height of at least 12
				  inches above the slab and at least 18 inches above the level of the final
				  ground surface or 100-year floodplain, whichever is greater.
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.6692 - Water wells: Access port or sounding tube; vent

Current through June 11, 2024
1.
				Except as otherwise provided in subsection 2, a water well must have an access
				port which can be used for measuring the level of water. If the diameter of the
				casing is:
(a) No greater than 8 5/8 inches,
				the access port must:
(1) Be 1 inch in
				diameter and located at the top or in the cover of the casing; and
(2) Have a removable plug or bolt installed
				in such a manner as to prevent pollutants and contaminants from entering the
				well.
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.66925 - Water wells: Pumping to system for waste

Current through June 11, 2024
A water well must be equipped in such a manner as to be able
				  to pump to a system for waste, in addition to the system for distribution, to
				  allow flushing of the well. Piping that discharges into the system for
				  waste:
1. Must not be connected
				directly to a sanitary sewer or storm sewer; and
2. Must be equipped with:
(a) An air gap; and
(b) An angled flapper valve on the opening
				for discharge.
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.6693 - Water wells: Sampling tap

Current through June 11, 2024
A water well must be equipped with a means for sampling the
				  quality of water, consisting of a smooth-nosed sampling tap located on the
				  discharge piping at a point where pressure is maintained.
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.66935 - Springs: General requirements

Current through June 11, 2024
If a spring is developed as a source of water for a public
				  water system, the supplier of water shall:
1. Select a spring with an adequate capacity
				to provide the required quantity and quality of water throughout the intended
				period of use;
2. Protect the
				sanitary quality of water in the spring in compliance with NAC 445A.495 to
				445A.540, inclusive;
3. Comply with
				the provisions of NAC 445A.66935 to 445A.6696, inclusive; and
4. Take such measures as are appropriate for
				the unique geological conditions and sources of the 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.6694 - Springs: Prerequisites to development; reports after development; approval for use

Current through June 11, 2024
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
				submit to the Division or the appropriate district board of health for its
				review and approval:
(a) Detailed plans and
				specifications for the work.
(b)
				The statement of an engineer indicating the measured or anticipated rate and
				quantity of flow from the spring.
(c) Documentation that the supplier of water
				has a legal right to divert water from the spring for municipal,
				quasi-municipal or domestic purposes.
(d) The results of an analysis of water
				quality, performed by a properly certified laboratory, which demonstrates that
				the water complies with the provisions of NAC 445A.450 to 445A.492,
				inclusive.
(e) A map that shows the
				location of any source of pollution or contamination in the area and indicates
				the owner of the land where the source is located.
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.66945 - Springs: Establishment of zone of protection

Current through June 11, 2024
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 specific conditions of the site, to
				protect the source of water from the establishment of a source of pollution or
				contamination. To ensure the availability of that protection, the supplier of
				water shall:
(a) Execute a written agreement
				not to locate or permit a source of pollution or contamination within any part
				of the zone of protection he or she owns; and
(b) Obtain the written agreement of all other
				owners of land within the zone of protection not to locate or permit a source
				of pollution or contamination within the zone of protection.
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.6695 - Springs: Allowance of source of pollution or contamination within zone of protection

Current through June 11, 2024
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.66945.
2. The Division or the
				appropriate district board of health may:
(a)
				Allow sewer lines within the zone of protection, subject to such precautionary
				conditions as the Division or the appropriate district board of health deems
				appropriate.
(b) Authorize other
				exceptions to the provisions of subsection 1 if the Division or the appropriate
				district board of health determines, after evaluating the particular situation
				in each case, that there are special circumstances which justify each
				exception.
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.66955 - Springs: Covering of device for collection of water

Current through June 11, 2024
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 of water for a
				  public water system, whether the device consists of collection tile, perforated
				  PVC, infiltration boxes or tunnels, must be:
1. Covered with a minimum of 10 feet of
				impervious soil cover that extends a minimum of 15 feet in all horizontal
				directions up gradient from the device for the collection of water;
				or
2. Where it is impossible to
				comply with the requirements of subsection 1, covered with an impermeable
				liner. If an impermeable liner is necessary:
(a) The liner must have a total thickness of
				at least 12 mils and all seams of the liner must be folded or welded in such a
				manner as to prevent leakage.
(b)
				The liner must be determined to be compatible with drinking water.
(c) The liner must be installed in such a
				manner as to ensure its integrity. There must not be any stones that are 2
				inches or more in any dimension, or that have any sharp edges, located within 6
				inches of the liner.
(d) A minimum
				of 2 feet of relatively impervious soil cover must be placed over the
				liner.
(e) The liner and soil cover
				must extend a minimum of 15 feet in all horizontal directions up gradient from
				the device for the collection of water.
If warranted by the physical circumstances of a particular
				  spring, the Division or the appropriate district board of health may require
				  more stringent criteria for the design of an impermeable liner than the
				  criteria set forth in this subsection.
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.6696 - Springs: Development

Current through June 11, 2024
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 constructed
				in such a manner as to be capable of diverting from the area of the spring all
				anticipated runoff of surface water.
2. Each area for the collection of water from
				the spring must have at least one junction box, which can be locked, suitable
				for the inspection of the spring and the testing of water from the
				spring.
3. All collection boxes and
				junction boxes must incorporate access by manholes, air vents and overflow
				piping. The lids for those boxes must be gasketed, and the chambers of those
				boxes adequately screened and vented. Vents must be elbowed downward and placed
				not less than 12 inches nor more than 18 inches off the ground.
4. Any vegetation which is located within 100
				feet of the spring and has a root system greater than 2 feet in length must be
				removed.
5. A permanent device for
				measuring the flow of water must be installed. The device, which may consist of
				a weir, must be properly housed and otherwise protected.
6. The spring must be developed in such a
				manner as to eliminate, as thoroughly as possible, the ponding of water within
				the area for collection. Where the ponding of water is unavoidable, the excess
				must be collected as drainage and routed down gradient beyond the immediate
				area for collection in a controlled manner which avoids the possibility for
				pollution or contamination of the spring.
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.66965 - Pumping facilities: General requirements

Current through June 11, 2024
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 design of the pumping facilities of
				the public water system are appropriate to maintain requirements for the
				quality, quantity and pressure of water.
3. Except as otherwise justified by an
				engineer and approved by the Division or the appropriate district board of
				health, the public water system does not use any pumps installed in subsurface
				vaults.
4. If it is necessary to
				install any pumps in suction lift, appropriate priming systems are
				provided.
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.6697 - Pumping facilities: Location of pumping stations

Current through June 11, 2024
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.
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.66975 - Pumping facilities: Construction of sites for pumping stations

Current through June 11, 2024
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 and entry by animals and
				unauthorized persons.
3. The
				elevation of the pumping station is at least 3 feet above the level of the
				100-year floodplain or the pumping station is protected from a flood of that
				elevation.
4. The finished grade of
				the site directs surface drainage away from the 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.6698 - Pumping facilities: Intakes

Current through June 11, 2024
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 quality of the
				pumped water.
2. Except where
				surface water is obtained by direct suction from an adjacent supply, water must
				be conducted from its source through a watertight conduit by:
(a) Gravity into a suction well located in or
				adjacent to the pump house; or
(b)
				Submersible pumps or booster pumps.
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.66985 - Pumping facilities: Housing of pumping stations

Current through June 11, 2024
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 durable construction. The building
				must have outward-opening doors with tamper-proof hinges.
2. The floors must be:
(a) Elevated at least 6 inches above the
				finished grade; and
(b) Drained in
				such a manner that the quality of finished water is not endangered. All floors
				must slope at least 1/8 inch per foot to a suitable drain, preferably to
				daylight.
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.6699 - Pumping facilities: Suction wells and clear wells

Current through June 11, 2024
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 from
				contamination.
(d) Be arranged in a
				manner that conforms to the criteria specified by the manufacturers of the
				pumps for the well.
(e) If water
				cascades into the well or enters at such a velocity as to entrain air, have
				alternating floor and roof baffles in the basin of the well.
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.66995 - Pumping facilities: Pumps

Current through June 11, 2024
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
				compatible with drinking water and is installed in accordance with the
				directions of the manufacturer.
2.
				When the pressure in a distribution system is dependent exclusively on a
				pumping station, at least two pumping units are used unless the required
				quantity and pressure of water can be supplied by other facilities in the
				public water system during any period that can reasonably be expected necessary
				to complete the repair of one pump.
3. Power to drive a pump at maximum
				horsepower is provided by a suitably sized prime mover.
4. Spare parts and tools are readily
				accessible.
5. Control equipment is
				provided with proper heaters or fuses for protection from overloads.
6. If a lineshaft turbine pump has
				oil-lubricated bearings, the grade and designation of the oil is approved by
				the Division of Environmental Protection.
7. If a pump is used to pressurize a small
				system that may experience periods of zero flow, the pump has a small relief
				bypass to prevent the overheating of water in the pump.
Added to NAC by Bd. of
				  Health, eff. 2-20-97; A by
				  R104-22A,
				  eff. 12/9/2022
NRS 445A.860
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.67005 - Pumping facilities: Priming

Current through June 11, 2024
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 a centrifugal pump is used and air binding or the
				accumulation of air is a problem, there is a means to remove the air from the
				eye of the impeller.
(d) Where vent
				lines discharge to a drain, the vent lines are designed with an air
				gap.
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.6701 - Pumping facilities: Booster pumps

Current through June 11, 2024
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 demand.
2. If necessary, a bypass is available for
				use.
3. A device for automatic
				control prevents excessive cycling.
4. If a booster pump provides water directly
				to an individual building:
(a) The supplier of
				water is able to demonstrate that the pump will not jeopardize the sanitary
				quality of the public water system.
(b) The pump will not reduce the water
				pressure in the distribution main to less than 40 psi.
(c) A double check valve assembly is
				installed at the meter or service line.
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.67015 - Pumping facilities: Alarm system

Current through June 11, 2024
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
				  that could compromise the capability of the public water system to operate as
				  intended.
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.6702 - Pumping facilities: General requirements for piping system

Current through June 11, 2024
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 as to minimize head loss.
2. Not be subject to pollution or
				contamination.
3. Be designed and
				constructed with watertight joints.
4. Be protected against surge pressure,
				vacuum pressure and water hammer.
5. Be equipped with means for the removal of
				entrapped air.
6. Be designed in
				such a manner that each pump has an individual suction line or the suction
				lines are equipped with a header that ensures similar hydraulic and operating
				conditions.
7. Be protected against
				freezing.
8. Be properly bedded in
				such a manner as to prevent damage.
9. Have taps for the sampling of water
				quality.
10. Be restrained and
				supported in such a manner as to prevent movement.
11. Be constructed with the appropriate pipes
				and valves to provide for its satisfactory operation, maintenance and repair at
				all times.
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.6703 - Pumping facilities: Discharge piping

Current through June 11, 2024
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
				  system:
1. The diameter of the
				discharge pipe is sized in accordance with the specifications and
				recommendations of the manufacturer of the pump and Standard
				9.6.6 of the American National
				Standards Institute and Hydraulic Institute. A concentric reducer or eccentric
				reducer may be installed on the discharge pipe.
2. A fitting, which may consist of a spool or
				union, is installed on a discharge pipe to facilitate the removal of the pump.
				Except as otherwise provided in this subsection, a permanent pressure gauge
				with a pet cock or ball valve must also be installed on the discharge pipe. In
				lieu of a permanent pressure gauge, a connection for a temporary pressure gauge
				and a pressure transducer may be installed. A temporary pressure gauge
				installed pursuant to this subsection must be maintained on-site.
3. A check valve or other suitable type of
				valve is installed just beyond the fitting required by subsection 2, to prevent
				the reversal of flow through the pump. On pumping installations of:
(a) Low pressure, a swing check valve may be
				used.
(b) High pressure, a silent
				check valve or automatic check valve, or another suitable valve, must be used.
				The engineer who designs such an installation shall seek to minimize the
				potential for water hammer.
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.67035 - Pumping facilities: Gauges and meters

Current through June 11, 2024
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, have
				a:
(1) Permanent standard pressure gauge on
				its suction line if the pump is in suction head; or
(2) Permanent compound pressure gauge on its
				suction line if the pump is in suction lift.
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.6704 - Pumping facilities: Seal water

Current through June 11, 2024
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 that of the water being
				pumped.
2. Where potable water is
				used as seal water and the water being pumped is of lesser sanitary quality,
				the line for the delivery of the seal water to the stuffing box must have a
				reduced pressure principle assembly or air gap.
3. Where seal water is obtained from an
				external source, the line for the delivery of the seal water must be equipped
				with a pressure gauge at the stuffing box. The pressure of the seal water must
				be not less than 10 psi nor more than 15 psi higher than the pressure of the
				stuffing box and cause the water to flow from the stuffing box into the volute.
				Seal water must be obtained from an external source when the suction lift is
				such that there could be difficulty in priming as a result of leakage through
				the stuffing box.
4. A supplier of
				water shall provide collection piping, which discharges into a drain, to
				accommodate any leakage from a stuffing box.
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.67045 - Pumping facilities: Controls

Current through June 11, 2024
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 that they will operate at
				their rated capacity without sustained overload. There must be a means to
				prevent a motor from energizing if a backspin cycle occurs.
3. Electrical controls must be located above
				grade.
4. There must be a means of
				protection against low voltages and the failure of phase. Surge arrestors must
				be provided for protection from power surges.
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.6705 - Pumping facilities: Power

Current through June 11, 2024
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 of power must be installed
				in accordance with applicable electrical, building and mechanical
				codes.
2. Where a failure of power
				would cause the public water system to cease its minimum essential service:
(a) The supply of power must be provided by
				at least two independent sources; or
(b) A standby or auxiliary source of power
				must be provided.
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.67055 - Pumping facilities: Heating, ventilation and lighting

Current through June 11, 2024
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
				system. If a pump house is not occupied by any personnel, the heat must only be
				sufficient to prevent any freezing of the equipment and processes for
				treatment. If a pumping installation will not be used during winter, the
				equipment must be isolated and drained in such a manner as to prevent damage
				from freezing.
2. A pumping station
				must have adequate ventilation, as provided by windows, doors, roof ventilators
				and other means. Except as otherwise approved by the Division or the
				appropriate district board of health, forced ventilation that results in at
				least six changes of air per hour must be provided for all rooms, compartments,
				pits, vaults and other enclosures below the ground floor, and in any area where
				an unsafe atmosphere may develop or excessive heat may build up.
3. A pumping station must be adequately
				lighted in a manner that provides a safe and functional environment for work.
				The electrical wiring for the lighting system must conform to applicable
				electrical and building codes.
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.6706 - Pumping facilities: Hydropneumatic systems

Current through June 11, 2024
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.
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.67065 - Storage structures: General requirements

Current through June 11, 2024
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 attached to the interior surface of a storage
				structure, the product must be determined to be compatible with drinking
				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.6707 - Storage structures: Clear wells

Current through June 11, 2024
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 follow fluctuations in the use of water
				or directly to meet maximum day demand and peak hour demand.
2. The capacity of a clear well must be
				sufficient to provide for the storage of the amount of finished water required
				for:
(a) Backwashing;
(b) Equalizing the storage of water necessary
				for the high-service pumping station of a treatment facility; and
(c) The operation of a treatment facility, if
				necessary.
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.67075 - Storage structures: Materials

Current through June 11, 2024
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 with American Water Works Association Standard D103;
(c) Consist of reinforced concrete of
				portland cement;
(d) Consist of
				prestressed concrete and comply with American Water Works Association Standard
				D110; or
(e) Consist of
				fiberglass-reinforced plastic and comply with American Water Works Association
				Standard D120.
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.6708 - Storage structures: Design and construction

Current through June 11, 2024
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 foundation
				that is appropriate for the type of tank and complies with the
American
				Water Works Association Standards
, as adopted by reference in NAC
				445A.6663.
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.67085 - Storage structures: Coatings; disinfection

Current through June 11, 2024
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 imparts a taste or odor to
				the water or causes the water to exceed any primary or secondary standards. All
				internal coatings must be determined to be compatible with drinking
				water.
2. A storage tank, whether
				coated in the field or in the factory, must not be placed into service unless:
(a) The tank is cured for the appropriate
				time.
(b) After the tank is cured,
				the tank is filled with water and the water is retained in the tank for 5
				days.
(c) The water retained in the
				tank is tested on the sixth day by a properly certified laboratory for the
				presence of volatile organic chemicals.
(d) The results of the test are submitted to
				and approved by the Division or the appropriate district board of
				health.
Nevada Administrative Code › Chapter 445A - Water Controls › PUBLIC WATER SYSTEMS › Design, Construction, Operation and Maintenance › Section 445A.6709 - Storage structures: Security and safety

Current through June 11, 2024
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 and sabotage. Fencing is required around any
				reservoir or tank that is highly accessible to the public or
				livestock.
2. The structures are
				designed in such a manner as to provide for the safety of employees of the
				public water system. Equipment for the safety of employees, including ladder
				cages, rest platforms, handrails, guardrails and any other appropriate devices,
				must be provided and must conform to any applicable state or federal
				requirements for occupational safety and health.
Added to NAC by Bd. of
				  Health, eff. 2-20-97
NRS
					 445A.860