Louisiana Administrative Code › Title 48 - PUBLIC HEALTH-GENERAL › Part V - Preventive Health Services › Subpart 5 - Fluoridation › Chapter 13 - Statewide Fluoridation Program › Section V-1307 - System Requirements

Current through Register Vol. 50, No. 6, June 20, 2024
A. Detailed
				  plans and specifications for which a fluoridation permit is requested shall be
				  submitted in duplicate, to the Department of Health and Hospitals Office of
				  Public Health's (DHH-OPH) District engineer and the DHH-OPH's fluoridation
				  engineer by the responsible person of the water supply system. Such plans and
				  specifications shall be submitted prior to construction.
B. The following provides minimum
				  requirements as well as additional information to assist in the application for
				  a fluoridation permit and in the preparation of plans and specifications. The
				  review and approval of plans and specifications submitted for the issuance of a
				  permit, shall be made in accordance with the "Recommended Standards for Water
				  Works, 2003 Edition" (aka the "Ten State Standards") plus any additional
				  requirements as set forth in this Subpart. Additional fluoride-related
				  documents which may be used by a community water system as guidance/information
				  purposes may be found in the CDC's Morbidity and Mortality Weekly Report (MMWR)
				  titled "Engineering and Administrative Recommendations for Water Fluoridation,
				  1995", as amended, and in the American Water Works Association (AWWA) "Water
				  Fluoridation Principles and Practices M4, Fifth Edition", as amended.
1. Three general types of fluoride compounds
				  are approved for fluoridation of water supplies; namely, sodium fluoride,
				  sodium fluorosilicate and fluorosilicic acid. Each has certain advantages and
				  disadvantages, and the type chosen will depend on the characteristics of the
				  water to be treated and the capacity of the supply.
2. The fluoride source material to be used
				  must conform to NSF International/American National Standards Institute
				  (NSF/ANSI) Standard 60-2009 and the applicable AWWA specification, as follows:
a. for sodium fluoride, AWWA Standard
				  B701-99;
b. for sodium
				  fluorosilicate, AWWA Standard B702-99; or
c. for fluorosilicic acid, AWWA Standard
				  B703-00.
3. The
				  fluoridation system shall only operate when a flow of water is detected. If the
				  water supply system serves less than two hundred service connections, a
				  secondary flow-based control device shall be provided as back-up
				  protection.
4. A means of measuring
				  the total amount of water treated daily and the amount of chemical injected
				  within the same time period must be provided. These measurements must be
				  accurate to within 5.0 percent.
5.
				  Fluorosilicic acid shall be stored in the original containers or containers
				  provided for the specific purpose, apart from the other chemicals used in the
				  water treatment process. Bulk storage tanks shall be in secondary containment
				  per LAC 33:IX.Chapter 9.
6. When
				  bulk storage of fluorosilicic acid is provided, a day tank shall be provided.
				  The day tank shall hold no more than a 30 hour supply, as calculated at maximum
				  feed rate. The day tank should be scale mounted, preferably under shelter. If
				  scales are not used, level indication can be used for the calculation of the
				  amount of chemical used provided it is accurate within five percent. Filling of
				  day tanks shall not be automated.
7. A diaphragm-type anti-siphon device shall
				  be installed in the fluoride feed line when a metering pump is used and shall
				  be located at the fluoride injection point. A second diaphragm-type anti-siphon
				  device should be installed immediately downstream of the metering pump's
				  discharge head. These anti-siphon devices shall have a diaphragm that is
				  spring-loaded in the closed position.
8. The following safety equipment shall be
				  required for operators handling the following fluoride compounds:
a. fluorosilicic acid: gauntlet neoprene
				  gloves, a minimum of 12 inches long with cuffs; full face shield and
				  splash-proof safety goggles; and a heavy-duty, acid-proof neoprene
				  apron;
b. sodium fluoride or sodium
				  fluorosilicate: the same safety equipment required under Subparagraph 8.a. of
				  this Subsection for fluorosilicic acid with the exception that the full face
				  shield shall be replaced by a National Institute for Occupational Safety and
				  Health/Mine Safety and Health Administration (NIOSH/MSHA) approved, N-series
				  respirator;
c. for dry chemical
				  systems, an eye wash station should be available and easily accessible;
				  and
d. for acid systems, an eye
				  wash station shall be available along with a safety shower and both shall be
				  easily accessible and connected to an approved potable water supply.