reglab/statecodes huggingface dataset:
Louisiana Administrative Code › Title 51 - PUBLIC HEALTH-SANITARY CODE › Part XII - Water Supplies › Chapter 1 - General › Subchapter B - General Design › Section XII-157 - Safety

Current through Register Vol. 50, No. 6, June 20, 2024
A. Consideration
				  shall be given to the safety of water plant personnel and visitors.
B. The design shall comply with all
				  applicable safety codes and regulations that include, but are not limited to,
				  the codes adopted under the authority of Act 12 of the 2005 First Extraordinary
				  Session, State Fire Marshal regulations (see LAC 55:V), National Fire
				  Protection Association (NFPA) standards, and federal Occupational Health and
				  Safety Administration (OSHA) standards.
C. Items to be considered include, but are
				  not limited to, noise arresters, noise protection, confined space entry,
				  protective equipment and clothing, gas masks, safety showers and eye washes,
				  handrails and guards, warning signs, smoke detectors, toxic gas detectors and
				  fire extinguishers.
AUTHORITY NOTE:
					 Promulgated in accordance with the provisions of
					 R.S.
					 40:4.A.(8), 40:4.13.D.(1)(2) and
					 40:5.A.(2)(3)(5)(6)(7)(17).
Louisiana Administrative Code › Title 51 - PUBLIC HEALTH-SANITARY CODE › Part XII - Water Supplies › Chapter 1 - General › Subchapter B - General Design › Section XII-159 - Security

Current through Register Vol. 50, No. 6, June 20, 2024
A. Security
				  measures including but not limited to the requirements of §315. A 13
				  of this Part, shall be installed and instituted.
B. Design measures to help ensure the
				  security of water system facilities shall be incorporated and, as a minimum,
				  shall include a means to lock all exterior doorways, windows, gates and other
				  entrances to source, production, treatment, pumping and water storage
				  facilities.
C. Other measures may
				  include signage, closed circuit monitoring, real-time water quality monitoring,
				  and intrusion alarms, as well as safety measures to prevent tampering with any
				  electronic, computer or other automated system which may operate or assist in
				  the operation of the water supply system.
AUTHORITY NOTE:
					 Promulgated in accordance with the provisions of
					 R.S.
					 40:4.A.(8), 40:4.13.D.(1)(2) and
					 40:5.A.(2)(3)(5)(6)(7)(17).
Louisiana Administrative Code › Title 51 - PUBLIC HEALTH-SANITARY CODE › Part XII - Water Supplies › Chapter 1 - General › Subchapter B - General Design › Section XII-161 - Flood Protection

Current through Register Vol. 50, No. 6, June 20, 2024
A.
				  Other than surface water intakes, all critical water supply facilities shall be
				  protected to at least the 100-year flood elevation.
B. The water supply system shall provide high
				  water vehicles, boats, or other acceptable means and methods to be able to
				  access, safely operate, and maintain its critical water supply facilities
				  during floods or other high water events.
AUTHORITY NOTE:
					 Promulgated in accordance with the provisions of
					 R.S.
					 40:4.A.(8), 40:4.13.D.(1)(2) and
					 40:5.A.(2)(3)(5)(6)(7)(17).
Louisiana Administrative Code › Title 51 - PUBLIC HEALTH-SANITARY CODE › Part XII - Water Supplies › Chapter 1 - General › Subchapter B - General Design › Section XII-163 - Design; Other Considerations

Current through Register Vol. 50, No. 6, June 20, 2024
A.
				  Consideration shall be given to the design requirements of other federal,
				  state, and local regulatory agencies for items including, but not limited to:
1. energy efficiency;
2. water conservation;
3. environmental impact;
4. safety requirements;
5. special designs for the
				  handicapped;
6. plumbing and
				  electrical codes; and
7.
				  construction in the flood plain.
Louisiana Administrative Code › Title 51 - PUBLIC HEALTH-SANITARY CODE › Part XII - Water Supplies › Chapter 1 - General › Subchapter C - Source Development › Section XII-165 - General Requirements

Current through Register Vol. 50, No. 6, June 20, 2024
A.
				  In selecting the source of water supply to be developed, the designing engineer
				  shall prove to the satisfaction of the state health officer and other
				  applicable reviewing authorities that an acceptable source having an adequate
				  quantity of water will be available, and that the water which is to be
				  delivered to the consumers shall be adequately treated, when necessary or
				  required, to meet the current requirements of the state health officer with
				  respect to microbiological, physical, chemical and radiological
				  qualities.
B. Each water supply
				  system should take its raw water from the best available source which is
				  economically reasonable and technically possible.
AUTHORITY NOTE:
					 Promulgated in accordance with the provisions of
					 R.S.
					 40:4.A.(8), 40:4.13.D.(1)(2) and
					 40:5.A.(2)(3)(5)(6)(7)(17).
Louisiana Administrative Code › Title 51 - PUBLIC HEALTH-SANITARY CODE › Part XII - Water Supplies › Chapter 1 - General › Subchapter C - Source Development › Section XII-167 - Surface Water

Current through Register Vol. 50, No. 6, June 20, 2024
A. A
				  source water protection plan enacted for continued protection of the watershed
				  from potential sources of contamination shall be provided as determined by the
				  state health officer. Surface water includes sources of water supply such as,
				  but not limited to:
1. all streams;
2. tributary streams;
3. drainage basins,
4. natural and man-made ponds and lakes;
				  and
5. artificial reservoirs or
				  impoundments.
Louisiana Administrative Code › Title 51 - PUBLIC HEALTH-SANITARY CODE › Part XII - Water Supplies › Chapter 1 - General › Subchapter C - Source Development › Section XII-169 - Groundwater

Current through Register Vol. 50, No. 6, June 20, 2024
A. A groundwater
				  source includes all water obtained from:
1.
				  dug;
2. drilled;
3. bored or driven wells;
4. springs; and
5. infiltration lines.
Louisiana Administrative Code › Title 51 - PUBLIC HEALTH-SANITARY CODE › Part XII - Water Supplies › Chapter 1 - General › Subchapter D - Treatment › Section XII-171 - General Requirements

Current through Register Vol. 50, No. 6, June 20, 2024
A.
				  The design of treatment processes and devices shall depend on evaluation of the
				  nature and quality of the particular water to be treated, seasonal variations,
				  the desired quality of the finished water and the mode of operation planned.
				  Facilities shall be planned with future requirements in mind such as: tightened
				  regulatory requirements, ability to obtain funding, potential growth, expansion
				  and deterioration of existing facilities.
AUTHORITY NOTE:
					 Promulgated in accordance with the provisions of
					 R.S.
					 40:4.A.(8), 40:4.13.D.(1)(2) and
					 40:5.A.(2)(3)(5)(6)(7)(17).
Louisiana Administrative Code › Title 51 - PUBLIC HEALTH-SANITARY CODE › Part XII - Water Supplies › Chapter 1 - General › Subchapter D - Treatment › Section XII-173 - Microscreening

Current through Register Vol. 50, No. 6, June 20, 2024
A. Microscreening
				  is a mechanical treatment process capable of removing suspended matter and
				  organic loading from surface water by straining. It shall not be used in place
				  of filtration or coagulation.
1. Design.
				  Design criteria is as followed.
a.
				  consideration shall be given to the following:
i. nature of the suspended matter to be
				  removed;
ii. corrosiveness of the
				  water;
iii. effect of chemicals
				  used for pre-treatment;
iv.
				  duplication of units for continuous operation during equipment maintenance;
v. provision of automated
				  backwashing
Louisiana Administrative Code › Title 51 - PUBLIC HEALTH-SANITARY CODE › Part XII - Water Supplies › Chapter 1 - General › Subchapter D - Treatment › Section XII-175 - Clarification Design

Current through Register Vol. 50, No. 6, June 20, 2024
A.
				  Clarification is generally considered to consist of any process or combination
				  of processes which reduce the concentration of suspended matter in drinking
				  water prior to filtration.
B.
				  Plants designed to treat surface water, groundwater under the direct influence
				  of a surface water, or for the removal of a primary drinking water contaminant
				  shall have the ability to meet the plants average daily flow of the maximum
				  month with one unit out of service. Design of the clarification process shall:
1. be constructed to permit units to be taken
				  out of service without disrupting operation, and with drains or pumps sized to
				  allow dewatering in a reasonable period of time;
2. provide multiple-stage treatment
				  facilities when required by the state health officer; and
3. minimize hydraulic head losses between
				  units to allow future changes in processes without the need for
				  repumping.
Louisiana Administrative Code › Title 51 - PUBLIC HEALTH-SANITARY CODE › Part XII - Water Supplies › Chapter 1 - General › Subchapter D - Treatment › Section XII-179 - Disinfection

Current through Register Vol. 50, No. 6, June 20, 2024
A. Disinfection may
				  be accomplished with gas and liquid chlorine, calcium or sodium hypochlorites,
				  chlorine dioxide, chloramines, ozone, or ultraviolet light. Other disinfecting
				  agents will be considered, providing reliable application equipment is
				  available and testing procedures for a residual are recognized in "Standard
				  Methods for the Examination of Water and Wastewater,". Disinfection is required
				  for all water systems in accordance with
				  §355 and
				  §357 of this Part, other than those
				  public water systems holding valid disinfection variance in accordance with
				  §361 of this Part.
B. Chlorination. Design criteria for
				  chlorination shall be as follows.
1.
				  Chlorination Equipment Type. Solution-feed gas chlorinators or hypochlorite
				  feeders of the positive displacement type shall be provided. (see §201-209
				  "Chemical Application" of this Part).
2. Capacity. The chlorinator capacity shall
				  be sufficient to comply with minimum chlorine residuals required in
				  §355 and
				  §357 of this Part. The equipment shall be
				  of such design that it will operate accurately over the desired feeding
				  range.
3. Standby Equipment.
				  Standby equipment shall be available to replace/repair a critical unit unless
				  an alternative is approved by the state health officer. Spare parts shall be
				  readily available to replace parts subject to wear and breakage. If there is a
				  large difference in feed rates between routine and emergency dosages, a gas
				  metering tube should be provided for each dose range to ensure accurate control
				  of the chlorine feed.
4. Automatic
				  Switch-Over. Automatic switch-over of chlorine cylinders shall be provided to
				  assure continuous disinfection.
5.
				  Eductor. Each eductor shall be selected for the point of application with
				  particular attention given to the quantity of chlorine to be added, the maximum
				  injector water flow, the total discharge back pressure, the injector operating
				  pressure, and the size of the chlorine solution line. Gauges for measuring
				  water pressure and vacuum at the inlet and outlet of each eductor should be
				  provided.
6. Injector/Diffuser. The
				  chlorine solution injector/diffuser shall be compatible with the point of
				  application to provide a rapid and thorough mix with all the water being
				  treated.
Louisiana Administrative Code › Title 51 - PUBLIC HEALTH-SANITARY CODE › Part XII - Water Supplies › Chapter 1 - General › Subchapter D - Treatment › Section XII-181 - Softening

Current through Register Vol. 50, No. 6, June 20, 2024
A. Lime or
				  Lime-Soda Process. Design standards for rapid mix, flocculation and
				  sedimentation are in §175 of this Part. Additional consideration must be given
				  to the following process elements.
1.
				  Hydraulics. When split treatment is used, the bypass line should be sized to
				  carry total plant flow, and an accurate means of measuring and splitting the
				  flow shall be provided.
2. Rapid
				  Mix. Rapid mix detention times should be instantaneous, but not longer than 30
				  seconds with adequate velocity gradients to keep the lime particles
				  dispersed.
3. Stabilization.
				  Equipment for stabilization of water softened by the lime or lime-soda process
				  is required. (see §189 of this Part).
4. Sludge Collection. A means for sludge
				  removal shall be provided in the sedimentation basin.
5. Sludge Disposal. Provisions shall be
				  included for proper disposal of softening sludges. (see Subchapter F. §257-275
				  of this Part).
Louisiana Administrative Code › Title 51 - PUBLIC HEALTH-SANITARY CODE › Part XII - Water Supplies › Chapter 1 - General › Subchapter D - Treatment › Section XII-183 - Anion Exchange Treatment

Current through Register Vol. 50, No. 6, June 20, 2024
A.
				  Pre-Treatment Requirements. Iron, manganese or a combination of the two, should
				  not exceed 0.3 mg/L in the water as applied to the ion exchange resin.
				  Pre-treatment is required when a combination of iron and manganese exceeds 0.5
				  mg/L.
B. Design criteria for anion
				  exchange treatment is as follows.
1. Anion
				  exchange units are typically of the pressure type, down flow design. Automatic
				  regeneration based on volume of water treated shall be used unless manual
				  regeneration is justified and is approved by the state health officer. A manual
				  override shall be provided on all automatic controls.
2. If a portion of the water is bypassed
				  around the units and blended with treated water, the maximum blend ratio
				  allowable must be determined based on the highest anticipated raw water
				  contaminant level. If bypassing is provided, a totalizing meter and a
				  proportioning or regulating device or flow regulating valves shall be provided
				  on the bypass line.
Louisiana Administrative Code › Title 51 - PUBLIC HEALTH-SANITARY CODE › Part XII - Water Supplies › Chapter 1 - General › Subchapter D - Treatment › Section XII-185 - Aeration

Current through Register Vol. 50, No. 6, June 20, 2024
A. Aeration
				  processes generally are used in two types of treatment applications. One is the
				  transfer of a gas to water (e.g., adding oxygen to assist in iron and/or
				  manganese removal) and is called gas absorption, or aeration. The second is the
				  removal of gas from water (reduce or remove objectionable amounts of carbon
				  dioxide, hydrogen sulfide, etc. or reduce the concentration of taste and
				  odor-causing substances or removal of volatile organic compounds) and is
				  classified as desorption or air stripping. The materials used in the
				  construction of the aerator(s) shall meet NSF/ANSI 61 or be approved by the
				  state health officer.
1. Natural Draft
				  Aeration. Design shall provide:
a.
				  perforations in the distribution pan 3/16 to 1/2 inches in diameter, spaced 1
				  to 3 inches on centers to maintain a six inch water depth;
b. for distribution of water uniformly over
				  the top tray;
c. discharge through
				  a series of three or more trays with separation of trays not less than 12
				  inches;
d. loading at a rate of 1
				  to 5 gallons per minute for each square foot of total tray area (2.5 - 12.5
				  m/hr);
e. trays with slotted, heavy
				  wire (1/2 inch openings) mesh or perforated bottoms;
f. construction of durable material resistant
				  to aggressiveness of the water and dissolved gases; and
g. protection from insects by 24-mesh screen
				  when used in applications where the water will not be subject to open vessels
				  in downstream treatment processes.
Louisiana Administrative Code › Title 51 - PUBLIC HEALTH-SANITARY CODE › Part XII - Water Supplies › Chapter 1 - General › Subchapter D - Treatment › Section XII-187 - Iron and Manganese Control

Current through Register Vol. 50, No. 6, June 20, 2024
A. Iron and manganese control, as used
				  herein, refers solely to treatment processes designed specifically for this
				  purpose. The treatment process used will depend upon the character of the raw
				  water. The selection of one or more treatment processes must meet specific
				  local conditions as determined by engineering investigations, including
				  chemical analyses of representative samples of water to be treated, and receive
				  the approval of the state health officer. It may be necessary to operate a
				  pilot plant in order to gather all information applicable to the design.
				  Consideration should be given to adjusting pH of the raw water to optimize the
				  chemical reaction.
1. Design elements for
				  removal by oxidation, detention and filtration are as follows.
a. Oxidation. Oxidation may be by aeration,
				  as indicated in §185 of this Part, or by chemical oxidation with chlorine,
				  potassium permanganate, sodium permanganate, ozone or chlorine
				  dioxide.
b. Reaction. A detention
				  time shall be provided following aeration to insure that the oxidation
				  reactions are as complete as possible. The reaction tank/detention basin shall
				  be designed to prevent short circuiting. If a reaction tank/detention basin is
				  provided, it shall be provided with an overflow, vent and access hatch in
				  accordance with §225 I, §225 J, and §225. K of this Part.
c. Sedimentation. Sedimentation basins shall
				  be provided when treating water with high iron and/or manganese ([GREATER THAN
				  EQUALS TO] 7*SMCL) content, or where chemical coagulation is used to reduce the
				  load on the filters. Provisions for sludge removal shall be made.
d. Filtration. Filters shall be provided and
				  shall conform to §177 of this Part.
Louisiana Administrative Code › Title 51 - PUBLIC HEALTH-SANITARY CODE › Part XII - Water Supplies › Chapter 1 - General › Subchapter D - Treatment › Section XII-189 - Stabilization

Current through Register Vol. 50, No. 6, June 20, 2024
A. Carbon Dioxide
				  Addition. Where liquid carbon dioxide is used, adequate precautions shall be
				  taken to prevent carbon dioxide from entering the plant from the recarbonation
				  process.
1. Consideration shall be given to
				  the installation of a carbon dioxide alarm system with light and audio warning,
				  especially in low areas.
2.
				  Recarbonation tanks shall be located outside or be sealed and vented to the
				  outside with adequate seals and adequate purge flow of air to ensure workers
				  safety.
a. Provisions shall be made for
				  draining the recarbonation basin and removing sludge.
Louisiana Administrative Code › Title 51 - PUBLIC HEALTH-SANITARY CODE › Part XII - Water Supplies › Chapter 1 - General › Subchapter D - Treatment › Section XII-191 - Taste and Odor Control

Current through Register Vol. 50, No. 6, June 20, 2024
A.
				  Powdered Activated Carbon. Design elements for powdered activated carbon (PAC)
				  include the following.
1. Continuous
				  agitation or resuspension equipment shall be provided to keep the carbon from
				  depositing in the slurry storage tank.
2. Provision shall be made for adequate dust
				  control.
3. The required rate of
				  feed of carbon in a water treatment plant depends upon the tastes and/or odors
				  involved, but provision should be made for adding from 0.1 milligrams per liter
				  to at least 40 milligrams per liter.
4. Powdered activated carbon shall be handled
				  as a potentially combustible material.
Louisiana Administrative Code › Title 51 - PUBLIC HEALTH-SANITARY CODE › Part XII - Water Supplies › Chapter 2 - Public Water System Construction, Operation and Maintenance › Subchapter A - Chemical Application › Section XII-201 - General Requirements

Current through Register Vol. 50, No. 6, June 20, 2024
A.
				  General. Chemicals applied to treat potable drinking water shall meet the
				  requirements of NSF/ANSI Standard 60 as certified by an ANSI-accredited testing
				  agency.
B. Plans and
				  Specifications. Plans and specifications shall be submitted for review and
				  approval, as provided for in Chapter 1, Subchapter A of this Part, and shall
				  include:
1. descriptions of feed equipment,
				  including maximum and minimum feed ranges;
2. location of feeders, piping layout and
				  points of application;
3. storage
				  and handling facilities;
4.
				  operating and control procedures including proposed application
				  rates;
5. description of testing
				  equipment; and
6. description of
				  system including all tanks with capacities, (with drains, overflows, and
				  vents), feeders, transfer pumps, connecting piping, valves, points of
				  application, backflow prevention devices, air gaps, secondary containment, and
				  safety eye washes and showers.
Louisiana Administrative Code › Title 51 - PUBLIC HEALTH-SANITARY CODE › Part XII - Water Supplies › Chapter 2 - Public Water System Construction, Operation and Maintenance › Subchapter A - Chemical Application › Section XII-203 - Feed Equipment

Current through Register Vol. 50, No. 6, June 20, 2024
A.
				  Feeder Redundancy. Where a chemical feed and booster pump is necessary for the
				  protection of the supply, such as chlorination, coagulation or other essential
				  processes, a standby unit or a combination of units of sufficient size to meet
				  capacity shall be provided to replace the largest unit when out of service.
1. A separate feeder shall be used for each
				  chemical applied.
2. Spare parts
				  shall be available on site for each type of feeder and chemical booster pump to
				  replace parts which are subject to wear and damage.
Louisiana Administrative Code › Title 51 - PUBLIC HEALTH-SANITARY CODE › Part XII - Water Supplies › Chapter 2 - Public Water System Construction, Operation and Maintenance › Subchapter A - Chemical Application › Section XII-205 - Chemicals

Current through Register Vol. 50, No. 6, June 20, 2024
A. Chemical
				  shipping containers shall be fully labeled to include:
1. chemical name, purity and concentration;
				  and
2. supplier name and
				  address.
Louisiana Administrative Code › Title 51 - PUBLIC HEALTH-SANITARY CODE › Part XII - Water Supplies › Chapter 2 - Public Water System Construction, Operation and Maintenance › Subchapter A - Chemical Application › Section XII-207 - Operator Safety

Current through Register Vol. 50, No. 6, June 20, 2024
A.
				  Special provisions shall be made for ventilation of chlorine feed and storage
				  rooms.
B. Respiratory protection
				  equipment shall:
1. meet the requirements of
				  the National Institute for Occupational Safety and Health (NIOSH);
2. be available where chlorine gas is
				  handled;
3. shall be stored at a
				  convenient heated location, but not be stored inside any room where chlorine is
				  used or stored; and
4. if
				  compressed air is used shall have at least a 30 minute capacity.
Louisiana Administrative Code › Title 51 - PUBLIC HEALTH-SANITARY CODE › Part XII - Water Supplies › Chapter 2 - Public Water System Construction, Operation and Maintenance › Subchapter B - Pumping Facilities › Section XII-211 - General

Current through Register Vol. 50, No. 6, June 20, 2024
A. Pumping
				  facilities shall be designed to maintain the sanitary quality of pumped
				  water.
B. Subsurface pits or pump
				  rooms and inaccessible installations should be avoided.
C. No pumping station shall be subject to
				  flooding, unless critical components are protected from damage or contamination
				  by inundation.
AUTHORITY NOTE:
					 Promulgated in accordance with the provisions of
					 R.S.
					 40:4.A.(8), 40:4.13.D.(1)(2) and
					 40:5.A.(2)(3)(5)(6)(7)(17).
Louisiana Administrative Code › Title 51 - PUBLIC HEALTH-SANITARY CODE › Part XII - Water Supplies › Chapter 2 - Public Water System Construction, Operation and Maintenance › Subchapter B - Pumping Facilities › Section XII-213 - Site Protection

Current through Register Vol. 50, No. 6, June 20, 2024
A. The
				  stations critical components that could be damaged or contaminated by
				  inundation shall be:
1. elevated to a minimum
				  of two foot above the 100-year flood elevation, or protected to such elevations
				  including the use of a levee system;
2. readily accessible at all times unless
				  permitted to be out of service for the period of inaccessibility;
3. graded around the station so as to lead
				  surface drainage away from the station;
4. protected to prevent vandalism and
				  entrance by animals or unauthorized persons. The pump station should be located
				  within a secure area such as a locked building or fenced area;
5. labeled such that the pumps and valves in
				  the station are tagged to correspond to the maintenance record and for proper
				  identification.
Louisiana Administrative Code › Title 51 - PUBLIC HEALTH-SANITARY CODE › Part XII - Water Supplies › Chapter 2 - Public Water System Construction, Operation and Maintenance › Subchapter B - Pumping Facilities › Section XII-215 - Pumping Stations

Current through Register Vol. 50, No. 6, June 20, 2024
A. Both
				  raw and finished water pumping stations shall:
1. be of durable construction, fire and
				  weather resistant;
2. have any
				  underground structure waterproofed
3. have all floors slope to a suitable drain
				  in such a manner that the quality of the potable water will not be
				  endangered;
4. provide a suitable
				  outlet for drainage without allowing discharge across the floor, including
				  pumping glands, vacuum air relief valves, etc.
Louisiana Administrative Code › Title 51 - PUBLIC HEALTH-SANITARY CODE › Part XII - Water Supplies › Chapter 2 - Public Water System Construction, Operation and Maintenance › Subchapter B - Pumping Facilities › Section XII-217 - Pumps

Current through Register Vol. 50, No. 6, June 20, 2024
A. Where necessary
				  to meet minimum system requirements such as pressure, at least two pumping
				  units shall be provided. With any pump out of service, the remaining pump or
				  pumps shall be capable of providing the maximum design capacity of that
				  station.
B. The pumping units
				  shall:
1. have ample capacity to supply the
				  peak demand against the required distribution system pressure without dangerous
				  overloading;
2. be driven by prime
				  movers able to meet the maximum horsepower condition of the pumps;
3. be provided with readily available spare
				  parts and tools;
4. be served by
				  control equipment that has proper heater and overload protection for air
				  temperature encountered.
Louisiana Administrative Code › Title 51 - PUBLIC HEALTH-SANITARY CODE › Part XII - Water Supplies › Chapter 2 - Public Water System Construction, Operation and Maintenance › Subchapter B - Pumping Facilities › Section XII-219 - Booster Pumps

Current through Register Vol. 50, No. 6, June 20, 2024
A.
				  Booster pumps shall be located or controlled so that:
1. they will not produce negative pressure in
				  their suction lines;
2. pumps
				  taking suction from storage tanks shall be provided adequate net positive
				  suction head;
3. pumps taking
				  suction from ground storage tanks shall be equipped with automatic shutoffs or
				  low pressure controllers as recommended by the pump manufacturer;
4. automatic or remote control devices shall
				  have a range between the start and cutoff pressure which will prevent excessive
				  cycling; and
5. a bypass is
				  available.
Louisiana Administrative Code › Title 51 - PUBLIC HEALTH-SANITARY CODE › Part XII - Water Supplies › Chapter 2 - Public Water System Construction, Operation and Maintenance › Subchapter B - Pumping Facilities › Section XII-221 - Automatic and Remote Controlled Stations

Current through Register Vol. 50, No. 6, June 20, 2024
A. All automatic stations shall:
1. be provided with automatic signaling
				  apparatus which will report when the station is out of service; and
2. be electrically operated and controlled
				  and shall have signaling apparatus of proven performance if remotely
				  controlled.
Louisiana Administrative Code › Title 51 - PUBLIC HEALTH-SANITARY CODE › Part XII - Water Supplies › Chapter 2 - Public Water System Construction, Operation and Maintenance › Subchapter B - Pumping Facilities › Section XII-223 - Appurtenances

Current through Register Vol. 50, No. 6, June 20, 2024
A. Valves. Each
				  pump shall have:
1. an isolation valve on the
				  intake and discharge side of the pump to permit satisfactory operation,
				  maintenance and repair of the equipment;
2. a positive-acting check valve on the
				  discharge side between the pump and the shut-off valve;
a. If foot valves are necessary, they shall
				  have a net valve area of at least 2 1/2 times the area of the suction pipe and
				  they shall be screened.
b. Surge
				  relief valves or slow acting check valves if used shall be designed to minimize
				  hydraulic transients.
Louisiana Administrative Code › Title 51 - PUBLIC HEALTH-SANITARY CODE › Part XII - Water Supplies › Chapter 2 - Public Water System Construction, Operation and Maintenance › Subchapter C - Finished Water Storage › Section XII-225 - General

Current through Register Vol. 50, No. 6, June 20, 2024
A. The materials
				  and designs used for finished water storage structures shall provide stability
				  and durability as well as protect the quality of the stored water.
B. Steel structures shall be constructed in
				  accordance with the American Water Works Association (AWWA) standards,
				  incorporated by reference into these rules (see §277 for referenced standards)
				  concerning steel tanks, standpipes, reservoirs, and elevated tanks wherever
				  they are applicable. Other materials of construction are acceptable when
				  properly designed to meet the requirements of this Subchapter.
C. Sizing. The following criteria applies to
				  the sizing of storage facilities.
1. Storage
				  facilities should have sufficient capacity, as determined from engineering
				  studies, to meet domestic demands, and where fire protection is provided, fire
				  flow demands.
2. The minimum
				  storage capacity (or equivalent capacity) for systems not providing fire
				  protection shall be equal to the average daily consumption.
a. This requirement may be reduced when the
				  source and treatment facilities have sufficient capacity with standby power to
				  supplement peak demands of the system.
3. Excessive storage capacity should be
				  avoided to prevent potential water quality deterioration problems.
Louisiana Administrative Code › Title 51 - PUBLIC HEALTH-SANITARY CODE › Part XII - Water Supplies › Chapter 2 - Public Water System Construction, Operation and Maintenance › Subchapter C - Finished Water Storage › Section XII-227 - Treatment Plant Storage

Current through Register Vol. 50, No. 6, June 20, 2024
A. The
				  applicable design standards of §225 shall be followed for plant
				  storage.
B. Filter Washwater Tanks.
				  Filter washwater tanks shall be sized, in conjunction with available pump units
				  and finished water storage, to provide the backwash water required by §177.
				  A 10 of this Part. Consideration shall be given to the backwashing of several
				  filters in rapid succession.
C.
				  Clearwell. Clearwell storage should be sized, in conjunction with distribution
				  system storage, to relieve the filters from having to follow fluctuations in
				  water use.
1. When finished water storage is
				  used to provide disinfectant contact time (see §179. C) special attention shall
				  be given to tank size and baffling (see §227. C 2)
2. To ensure adequate disinfectant contact
				  time, sizing of the clearwell should include extra volume to accommodate
				  depletion of storage during the nighttime for intermittently operated
				  filtration plants with automatic high service pumping from the clearwell during
				  non-treatment hours.
3. An overflow
				  and vent shall be provided.
a. A minimum of
				  two clearwell compartments shall be provided.
Louisiana Administrative Code › Title 51 - PUBLIC HEALTH-SANITARY CODE › Part XII - Water Supplies › Chapter 2 - Public Water System Construction, Operation and Maintenance › Subchapter C - Finished Water Storage › Section XII-229 - Hydropneumatic Tank Systems

Current through Register Vol. 50, No. 6, June 20, 2024
A.
				  Pressure tanks shall meet ASME code requirements or an alternative approved by
				  the state health officer. Any alternative must be rated to at least 1.5 times
				  the maximum discharge pressure of the pump.
B. Location. The tank shall be located above
				  normal ground surface.
C. System
				  Sizing. The following criteria applies to the sizing of hydropneumatic systems.
1. The capacity of the wells and pumps in a
				  hydropneumatic system shall be at least five times the average daily demand
				  expressed in gallons per minute.
2.
				  The gross volume of the hydropneumatic tank, in gallons, shall be at least ten
				  times the capacity of the largest pump, rated in gallons per minute. For
				  example, a 250 gpm pump shall be a minimum of 2,500 gallon pressure tank,
				  unless other measures (e.g., variable speed drives in conjunction with the pump
				  motors) are provided to meet the maximum demand.
3. Sizing of hydropneumatic storage tanks
				  must consider the need for disinfectant contact time.
Louisiana Administrative Code › Title 51 - PUBLIC HEALTH-SANITARY CODE › Part XII - Water Supplies › Chapter 2 - Public Water System Construction, Operation and Maintenance › Subchapter C - Finished Water Storage › Section XII-231 - Distribution System Storage

Current through Register Vol. 50, No. 6, June 20, 2024
A.
				  The applicable design standards of §225 of this Part shall be followed for
				  distribution system storage.
B.
				  Pressures. The maximum variation between high and low levels in storage
				  structures providing pressure to a distribution system should not exceed 30
				  feet. The minimum working pressure in the distribution system shall be 20 psi
				  gauge and the normal working pressure should be approximately 60 to 80 psi
				  gauge. When static pressures exceed 100 psi gauge, pressure reducing devices
				  shall be provided on mains or as part of the meter setting on individual
				  service lines in the distribution system.
C. Drainage. Finished water storage
				  structures which provide pressure directly to the distribution system shall be
				  designed so they can be isolated from the distribution system and drained for
				  cleaning or maintenance without causing a loss of pressure in the distribution
				  system. The storage structure drain shall discharge to the ground surface with
				  no direct connection to a sewer or storm drain.
D. Level Controls. Adequate controls shall be
				  provided to maintain levels in distribution system storage structures. Level
				  indicating devices should be provided at a central location.
1. Pumps should be controlled from tank
				  levels with the signal transmitted by telemetering equipment when any
				  appreciable head loss occurs in the distribution system between the source and
				  the storage structure.
2. Altitude
				  valves or equivalent controls may be required for second and subsequent
				  structures on the system.
3.
				  Overflow and low-level warnings or alarms should be located where they will be
				  under responsible surveillance 24 hours a day.
Louisiana Administrative Code › Title 51 - PUBLIC HEALTH-SANITARY CODE › Part XII - Water Supplies › Chapter 2 - Public Water System Construction, Operation and Maintenance › Subchapter D - Distribution System Piping and Appurtenances › Section XII-233 - General

Current through Register Vol. 50, No. 6, June 20, 2024
A. All potable
				  water distribution systems shall be designed, constructed, and maintained so as
				  to prevent leakage of water due to defective materials, improper jointing,
				  corrosion, settling, impacts, freezing, or other causes.
B. Valves and blow-offs shall be provided so
				  that necessary repairs can be made with a minimum interruption of
				  service.
AUTHORITY NOTE:
					 Promulgated in accordance with the provisions of
					 R.S.
					 40:4.A.(8), 40:4.13.D.(1)(2) and
					 40:5.A.(2)(3)(5)(6)(7)(17).
Louisiana Administrative Code › Title 51 - PUBLIC HEALTH-SANITARY CODE › Part XII - Water Supplies › Chapter 2 - Public Water System Construction, Operation and Maintenance › Subchapter D - Distribution System Piping and Appurtenances › Section XII-235 - Materials

Current through Register Vol. 50, No. 6, June 20, 2024
A. Standard and
				  Material Selection. Standard and material selection shall comply with the
				  following.
1. Any solder or flux which is
				  used in the installation or repair of any public water system or any plumbing
				  in a residential or nonresidential facility providing water for human
				  consumption shall be lead free (
i.e.
, shall not contain more
				  than 0.2 percent lead).
2. Any
				  pipe, pipe fitting, plumbing fitting, fixture, and any other appurtenance which
				  is used in the installation or repair of any public water system or any
				  plumbing in a residential or nonresidential facility providing water for human
				  consumption shall be lead free (
i.e
., shall not contain more
				  than a weighted average of 0.25 percent lead when used with respect to the
				  wetted surfaces of pipes, pipe fittings, plumbing fittings, fixtures, and any
				  other appurtenances).
3. The lead
				  free requirements referenced in §235. A.1 of this Subchapter shall not
				  apply to:
a. leaded joints necessary for the
				  repair of existing cast iron pipes;
b. pipes, pipe fittings, plumbing fittings,
				  or fixtures, including backflow preventers, that are used exclusively for
				  nonpotable services such as manufacturing, industrial processing, irrigation,
				  outdoor watering, or any other uses where the water is not anticipated to be
				  used for human consumption; or,
c.
				  toilets, bidets, urinals, fill valves, flushometer valves, tub fillers, shower
				  valves, fire hydrants, service saddles, or water distribution main gate valves
				  that are 2 inches in diameter or larger.
Louisiana Administrative Code › Title 51 - PUBLIC HEALTH-SANITARY CODE › Part XII - Water Supplies › Chapter 2 - Public Water System Construction, Operation and Maintenance › Subchapter D - Distribution System Piping and Appurtenances › Section XII-237 - Distribution System Design

Current through Register Vol. 50, No. 6, June 20, 2024
A.
				  The system shall be designed to maintain a minimum pressure of 20 psig (140
				  kPa) at ground level at all points in the distribution system under all
				  conditions of flow.
B. The minimum
				  size of water main which provides for fire protection and serving fire hydrants
				  shall be six-inch diameter. Larger size mains will be required if necessary to
				  allow the withdrawal of the required fire flow while maintaining the minimum
				  residual pressure specified in §237 of this Subchapter.
C. The minimum size of water main in the
				  distribution system where fire protection is not to be provided shall be a
				  minimum of 3 inch diameter. Any departure from minimum requirements shall be
				  justified by hydraulic analysis and future water use, and may be considered
				  only in special circumstances.
D.
				  Dead end mains shall be equipped with a means to provide adequate flushing. No
				  flushing device shall be directly connected to any sewer.
AUTHORITY NOTE:
					 Promulgated in accordance with the provisions of
					 R.S.
					 40:4.A.(8), 40:4.13.D.(1)(2) and
					 40:5.A.(2)(3)(5)(6)(7)(17).
Louisiana Administrative Code › Title 51 - PUBLIC HEALTH-SANITARY CODE › Part XII - Water Supplies › Chapter 2 - Public Water System Construction, Operation and Maintenance › Subchapter D - Distribution System Piping and Appurtenances › Section XII-239 - Valves

Current through Register Vol. 50, No. 6, June 20, 2024
A. Valve spacing
				  shall not exceed one mile except for transmission mains 24 inches or
				  larger.
B. Valve spacing shall not
				  exceed five miles for transmission mains 24 inches or larger.
AUTHORITY NOTE:
					 Promulgated in accordance with the provisions of
					 R.S.
					 40:4.A.(8), 40:4.13.D.(1)(2) and
					 40:5.A.(2)(3)(5)(6)(7)(17).
Louisiana Administrative Code › Title 51 - PUBLIC HEALTH-SANITARY CODE › Part XII - Water Supplies › Chapter 2 - Public Water System Construction, Operation and Maintenance › Subchapter D - Distribution System Piping and Appurtenances › Section XII-241 - Hydrants

Current through Register Vol. 50, No. 6, June 20, 2024
A. Hydrant Leads.
				  The hydrant lead shall be at least as large as the hydrant. For new
				  construction and hydrant replacement, auxiliary valves shall be installed on
				  all hydrant leads.
B. Hydrant
				  Drainage. Where hydrant drains are not plugged, a gravel pocket or dry well
				  shall be provided unless the natural soils will provide adequate drainage.
1. Hydrant drains shall not be connected to
				  sanitary sewers or located within 6 feet of sanitary sewers, storm sewers, or
				  storm drains and where allowed, shall be above the seasonal groundwater
				  table.
Louisiana Administrative Code › Title 51 - PUBLIC HEALTH-SANITARY CODE › Part XII - Water Supplies › Chapter 2 - Public Water System Construction, Operation and Maintenance › Subchapter D - Distribution System Piping and Appurtenances › Section XII-243 - Air Relief Valves

Current through Register Vol. 50, No. 6, June 20, 2024
A.
				  At points in water mains where air can significantly accumulate provisions
				  shall be made to remove the air by means of air relief valves.
B. When used, the open end of an air relief
				  pipe from automatic valves shall be extended to at least one foot above grade
				  and provided with a screened, downward-facing elbow.
C. Discharge piping from air relief valves
				  shall not connect directly to any storm drain, storm sewer, or sanitary
				  sewer.
AUTHORITY NOTE:
					 Promulgated in accordance with the provisions of
					 R.S.
					 40:4.A.(8), 40:4.13.D.(1)(2) and
					 40:5.A.(2)(3)(5)(6)(7)(17).
Louisiana Administrative Code › Title 51 - PUBLIC HEALTH-SANITARY CODE › Part XII - Water Supplies › Chapter 2 - Public Water System Construction, Operation and Maintenance › Subchapter D - Distribution System Piping and Appurtenances › Section XII-245 - Installation of Water Mains

Current through Register Vol. 50, No. 6, June 20, 2024
A.
				  Specifications for installation of water mains shall incorporate the applicable
				  provisions of the AWWA standards and/or manufacturer's recommended installation
				  procedures including those specifications and requirements for bedding, cover
				  and blocking.
B. Installed pipe
				  shall be pressure tested and leakage tested in accordance with the appropriate
				  AWWA Standards.
C. New, cleaned and
				  repaired water mains shall be disinfected in accordance with AWWA Standard C651
				  (Disinfecting Water Mains) and are subject to the following additional
				  provisions.
1. Water from new water mains
				  shall not be furnished for consumer's use until tests performed by a laboratory
				  certified by the state health officer have shown the new water mains to be free
				  from contamination by coliform bacteria (following EPA approved procedures
				  prescribed in Standard Methods for the Examination of Water and Wastewater,
				  Nineteenth Edition).
2. After
				  cutting into or repairing existing mains, the water shall be tested by a
				  laboratory certified by the state health officer for coliform bacteria
				  (following EPA approved procedures prescribed in Standard Methods for the
				  Examination of Water and Wastewater, Nineteenth Edition) to determine the
				  effectiveness of the disinfection procedure unless an alternate method is
				  approve by the state health officer. If the direction of flow is unknown, then
				  samples shall be taken on each side of the main break. If samples are E.
				  coli/fecal coliform positive then the state health officer shall be notified.
				  If samples are total coliform positive, then corrective action must be taken,
				  and daily sampling shall continue until two consecutive samples are
				  negative.
3. Samples shall not be
				  collected from the new facilities until such new facilities have been
				  disinfected as prescribed herein, and the chlorinated water thoroughly flushed
				  from the system until such chlorine measurements are no higher than those
				  generally prevailing in the distribution system.
Louisiana Administrative Code › Title 51 - PUBLIC HEALTH-SANITARY CODE › Part XII - Water Supplies › Chapter 2 - Public Water System Construction, Operation and Maintenance › Subchapter D - Distribution System Piping and Appurtenances › Section XII-247 - Separation Distances from Contamination Sources

Current through Register Vol. 50, No. 6, June 20, 2024
A. Parallel installation. Water mains shall
				  be laid at least 6 feet horizontally from any existing or proposed gravity
				  sanitary or storm sewer, septic tank, or subsoil treatment system. This
				  distance shall be measured edge to edge.
1.
				  In cases where it is not practical to maintain a 6 foot separation, the state
				  health officer may allow deviation on a case-by-case basis, if supported by
				  data from the design engineer.
Louisiana Administrative Code › Title 51 - PUBLIC HEALTH-SANITARY CODE › Part XII - Water Supplies › Chapter 2 - Public Water System Construction, Operation and Maintenance › Subchapter D - Distribution System Piping and Appurtenances › Section XII-249 - Surface Water Crossings

Current through Register Vol. 50, No. 6, June 20, 2024
A.
				  Above-water crossings or above-grade piping, if present shall be:
1. adequately supported and
				  anchored;
2. protected from
				  vandalism;
3. protected from
				  foreseeable sources of damage;
4.
				  protected from freezing by water velocity, heating trace systems and thermal
				  insulation or other effective method; and
5. shall be placed so as to be accessible for
				  repair or replacement.
Louisiana Administrative Code › Title 51 - PUBLIC HEALTH-SANITARY CODE › Part XII - Water Supplies › Chapter 2 - Public Water System Construction, Operation and Maintenance › Subchapter D - Distribution System Piping and Appurtenances › Section XII-251 - Interconnections

Current through Register Vol. 50, No. 6, June 20, 2024
A. The approval of
				  the state health officer shall be obtained for interconnections between potable
				  water supplies.
AUTHORITY NOTE:
					 Promulgated in accordance with the provisions of
					 R.S.
					 40:4.A.(8), 40:4.13.D.(1)(2) and
					 40:5.A.(2)(3)(5)(6)(7)(17).
Louisiana Administrative Code › Title 51 - PUBLIC HEALTH-SANITARY CODE › Part XII - Water Supplies › Chapter 2 - Public Water System Construction, Operation and Maintenance › Subchapter D - Distribution System Piping and Appurtenances › Section XII-253 - Water Services and Plumbing

Current through Register Vol. 50, No. 6, June 20, 2024
A.
				  Water services and plumbing shall conform to the applicable provisions of the
				  State Uniform Construction Code, LAC 17:1.
B. Where permitted by the water supplier,
				  booster pumps that are used to draw water from a water supply distribution
				  system or are placed in a system to increase the line pressure, shall not
				  reduce the pressure at the customer connection to less than 20 psi (pounds per
				  square inch) gauge.
AUTHORITY NOTE:
					 Promulgated in accordance with the provisions of
					 R.S.
					 40:4.A.(8), 40:4.13.D.(1)(2) and
					 40:5.A.(2)(3)(5)(6)(7)(17).